Voltage adjustable

Buy DD40AJSA 5-40V to 24V 12V 5V Wide Voltage Adjustable Step Down DC Voltage Conve for R99.00

Buy 5V-36V to 5-12V Buck Converter Power Wide Voltage Adjustable Step Down Module DD40AJSA for R161.54

Adjustable Regulator Pulse Width PWM DC Motor Speed Controller Switch Feature: High efficiency, high torque, low heat generating. With reverse polarity protection, high current protection. Convenience and easily use. Specification: Material: PCB and electronic components Input voltage: DC6V - 28V Sustained current: 3A PWM euty cycle: 5% - 100% PWM frequency: 21KHz Module dimension: 50 x 29 x 16 mm / 1.97 x 1.14 x 0.63 inch (LHW) (approx) Cable length: Approx 200 mm / 7.88 inch Package included: 1 x PWM motor speed controller switch

   LM2596 DC-DC Voltage Regulator Adjustable Power Supply Module With Display   Specification:   1. With the voltmeter shows voltage meter error ± 0.1V, the range 0-40V. (Note: To ensure the accuracy of the voltmeter, please ensure that the input voltage of 4V and above) 2. Touch the key to switch measuring input or output voltage, and has a light show which is being measured voltages 3. Power off memory function, show that road after power voltage values measured for the last time 4. Press the touch button for 3 seconds to turn off LED display, touch the button again to turn on the LED display 5. The band terminals, no iron can also be easy to use, and retention wire connection point 6. Input voltage 4.0-40V (input voltage to the output voltage must be higher than 1.5v.) 7. The adjustable output voltage range of 1.25V-37V continuously adjustable (input voltage must be higher than the output voltage to a high of about 1.5V) 8. The maximum output current up to 3A, normal and stable operating current of 2A 9. the internal oscillation frequency 150KHz, belonging to the second generation of switching voltage regulator, low power consumption, high efficiency 10. The current switching LEDs are red   Package Included:   1 x DC-DC step up/down voltage converter       ** LOCALLY STOCKED **          

Buy Adjustable DC5V12V Voltage Regulator Module Constant Voltage Current For Solar Charging for R256.29

Buy Adjustable Step Down Buck Voltage Charger Module 10A **LOCAL STOCK** for R105.00

Buy (Voltage 24V)5V / 12V / 24V LED Display Adjustable Timer Relay Automation Control Switch Module... for R279.00

SELECTED OPTION: WATT: 5MW CLICK HERE for more options in this item. Specification: Product name: 5 Patterns 405nm Purple Light Laser Pointer Material: hard aluninium Output Power: 1mw,5mw Electric Current: Working Voltage: DC3.7V Wavelenth: 405nm Beam Distance: 5000-10000m Battery: 1 x 18650/2 x CR123A Switch: Clicly Spot diameter: 6M≤Φ10mm Work Temperature: 15℃--35℃ Imbursement Temperature: -10-40°C Features 1.Sturdy and economical technology 2.Use this laser pointer pen to point at any desired targets, project screens, lectures, or video monitors, presentations, museum and tour guides, point at the stars, and inspection 3.This 5mW laser pointer is guaranteed to adopt latest microelectronics 4.Purple dot scope spot, continuous output 5.Ultra safe, low power design, perfect for everyday use 6.Easily to use, only need to push the middle button then you can see striking purple beam of light shoot forth 7.Output type adjust focus, continuous output and working time is long than ordinary laser pen Package included: 1 x 405nm Purple Light Laser Pointer 5 x Patterns 1 x charger 1 x 18650 battery 1 x CR123A 1 x Holder

Description:   NT1501A+ 15V 1A Adjustable Regulated DC Linear Power Supply 220V F eatures:  High precision and good technique to protect the product safety and reliability. Fast protection and sound and light alarm, to be excluded after short circuit output can be recovered automatically within 1 second. Output constant voltage adjustable. Analog voltage and current display. Constant voltage and current operation in individual. Over current protection. S pecification:  Input voltage: 180-240 V (Don't support 110V) Output current: 0-1A / 0-100 mA Output voltage: 0-15 V DC Load stability: 0.01%+-2MV Recovery time of the:100us Ripple noise:  Temperature coefficient of:  Protection startup current: > 10% standard values   Package includes:  1 x NT1501A+ 15V 1A Adjustable DC Power Supply Comes with a mini plug adapter according to your country:)   Details pictures: 

Specifications: · 300W 8A 7-32V to 0.8-28V DC CC CV Buck Step-Down Converter Power Supply Step Down Module Adjustable Voltage Regulator LED Driver · High-power, constant current LED driver · Battery charger · Vehicle-mounted power supply · Low voltage system power supply · Non-isolated step-down CC CV Buck module with on-board LED load indicator · Input voltage: DC 7-32 V · Output Voltage: DC 0.8-28 V (Adjustable) · Output Current: 8A (MAX), more than 60Deg please strengthen heatsink · Continuous Current Range: 0.2-8A Adjustable · Output Power: 300W (MAX) · Conversion efficiency: 95% (more input voltage, more efficiency) · Output ripple: 50mV · Working Temperature: industrial (- 40 ° c to +85 °c) (environmental temperature, more than 40 degrees, please reduce power to use, or - enhance cooling) · No-load current: 20mA (input 24V,Output 12V for reference) · Voltage regulation: ± 1% · Load regulation: ± 1% · Dynamic response speed: 200uS 5% · Short circuit protection: YES · Input Reverse protection: No (please comply with a reverse protection or connect a diode at input parts.) · Size: 65 x 47 x 22 mm · On-board LED load indications: red = load present (eg. 'battery charging'), green = no load (eg. 'battery charged' or output disconnected) Features: 1. Fixed turn lamp current is 0.1 times the current value(Used to identify whether the battery is fully charged When charging). 2. Made from a dedicated benchmark IC and high-precision current sensing resistor, proving a more stable constant current, (when 20°C to 100°C constant current 1A, temperature drift less than 1%). Particularly suitable for LED driver. 3. High output current, the max output current can reach 8A. 4. Four high frequency capacitance, can lower output ripple, enhance the work stabilization. 5. Double heat sink design. MOS schottky diode independent heat sink,which heat dissipation is good, and won't affect each other. 6. Using large size Sendust Core and double pure copper wiring, improve working efficiency, reduce fever. 7. 3296 multiturn potentiometer,high accuracy voltage and current regulation, good stability. 8. Double color lamp, working condition be clear at a glance 9. Voltage and current are adjustable,wich effect is good. Applications: 1. High-power LED driver. 2. Lithium battery(or lead accumulator) charge. 3. Vehicle-mounted power supply. 4. Low voltage system power supply. 5. 6V, 12V, 14V, 24V battery charge. 6. On-board laptop power supply. 7. regulated power supply. 8.Low voltage power supply system. Module adjustment: ￢ﾀﾋ 1. When the module output voltage can not be adjusted (the output voltage is always equal to the input voltage) Please adjust the potentiometer counterclockwise 20 laps (20 turns) or more till it works.￢ﾀﾋ 2. Turn trimmers CLOCKWISE to INCREASE, ANTICLOCKWISE to DECREASE. 3. When adjust the blue potentiometer,please use a multimeter to monitor the voltage 4. The trimmer nearest the voltage output adjusts the output CURRENT (CC) 5. The trimmer nearest the voltage input adjusts the output VOLTAGE (CV) Charger application - intructions: 1. First determine the float voltage and charging current required by the battery to be charged (the ‘target battery'). The target battery disconnected from the module output, apply a voltage of 7V - 32V to the module input, being sure to observe correct polarity. 2. Using the CV trimmer, adjust the output voltage to about 5V. 3. Switch your multimeter into its 10A current scale and measure the module's short-circuit output current. Turn the CC trimmer to adjust the current to the charging current required by target battery. 4. Using the CV trimmer, adjust the module's output voltage to the float voltage required by the target battery. 5. Connect the target battery to the module output, observing correct polarity. Charging of the battery should commence ￢ﾀﾋ Constant current LED Driver Application - Instructions: 1. First determine the operating current and maximum operating voltage of the LED you need to drive. 2. With the CV trimmer, adjust the output voltage to about 5V. 3. Switch your multimeter into its 10A current scale and measure the module's short-circuit output current. Turn the CC trimmer to adjust the current to the operating current of your LED. 4. Adjust the CV trimmer to make the output voltage reach the maximum LED operating voltage. 5. Connect LED, test. Package included: 3 x 8A 300W buck adjustable power supply module

Calibration method: The module with a calibration function, do not worry about the measurement display is not accurate, If you find that the display is not accurate you can use the following method of calibration. Just use the calibration once for the first time! Voltage calibration: In the case of power off, press and hold the "Setup" button, power on, enter the voltage calibration mode, the LCD screen starts flashing, release the set button, press the "Settings" button to increase, "OK" to decrease, the input voltage of the calibration for the correct. Such as: the input voltage is 12.65V, then the voltage will be adjusted to 12.65V, after 2 seconds will automatic preservation, power off and exit the calibration is complete! Special Note: If the first use of the output voltage can not be adjusted, because the module factory, the default output voltage is 20V or so. When you encounter this problem, please counterclockwise rotation ADJ-V potentiometer more than 10 laps, until the voltage value changes, and then you can use the normal regulation of the voltage. Feature: Input voltage: 7V-36V Output voltage: 1.5-35V continuously adjustable (can only be used to do buck module, the input must be greater than the output 1.5V or more) Output current: Adjustable, the maximum 10A (recommended used within 8A, the 5A or 70W below in normal temperature can be natural cooling, when exceed please strengthen the cooling! Recommend add a small fan! Constant current needs to output voltage above 2V can be adjusted, current regulation, only in the constant current state will work.) Output power: 150W maximum (recommended used within 100W, large pressure difference use please reduce power) Operating temperature: -20 to +75 degrees (Note the use of power tube temperature, when exceed please strengthen the cooling) Operating frequency: 300KHz Conversion efficiency: up to 95% Short-circuit protection: Yes, the constant current the current setting of constant current value. Input reverse protection: No, if necessary, please add a diode on your own! Output anti-reflux: No, for charging, if necessary, please add a diode on your own! Wiring: Terminals or soldering terminals, IN for the input, OUT for the output Module size: 80 x 53 x 35mm (L*W*H) Weight: 132g Setting description: Setting display mode, divided into three types: F-0 mode: Display the output voltage; F-1 mode: Display the input voltage; F-2 mode: Alternating display input and output voltage; Press the "SET" button to cycle show the three display modes. The corresponding LED will be on or off. Press "OK" button to save and exit. Press "OK" key to switch the LCD backlight. F-0 mode: Display the output voltage: F-1 mode: Display the input voltage: F-2 mode: Alternating display input and output voltage: Applications: 1. Used as an ordinary step-down module with overcurrent protection Instructions: 1) Under no load condition, adjust "ADJ-V" of constant voltage potentiometer to make the output voltage reach the voltage value you want; 2) Direct short-circuit module output (find a thick wire or tweezers shorted to the output, Note: short-time do not adjust the voltage), then adjust the "constant current potentiometer ADJ-I" to make current value reaches the preset over-current protection value; or connected to the load can also adjust the current. (Such as on-board ammeter shows the current value is 4A, then the module maximum current is limited to 4A, when the current to 4A, the constant current red indicator light) 3) Connected to the load, work. 2. Used as a battery charger Instructions: 1) Determine the battery float voltage and charge current; (If the lithium battery parameters is 3.7V / 2200mAh, then the float voltage is 4.2V, the maximum charge current 1A, or 2200mA) 2) Under no load conditions, adjust the "constant voltage potentiometer ADJ-V" so that the output voltage reach to float voltage; 3) Direct short-circuit module output (find a thick wire or tweezers shorted to the output, Note: when short-circuit do not adjust the voltage), then adjust the "constant current potentiometer ADJ-I" to make the current value to the preset value of the charging current; or connected to the load can also adjust the current. 4) Charging turn lights current factory default is 0.1 times charging current; (battery during charging the current is gradually reduced, and gradually from constant current charging to constant voltage charging, if the charge current is set to 1A, then when the charge current is less than 0.1A, the charging yellow indicator light is off, full of charge blue light is lit, then the battery charge is complete), when charging is completed, please disconnect the battery terminal, then disconnect the input to prevent the battery backflow damaged the module! 5) Connected to the battery, charging. 3. Uesd as a constant current LED driver module Instructions: 1) Determine that you need to drive the LED operating current and maximum operating voltage; 2) Under no-load conditions, the regulation "constant voltage potentiometer ADJ-V" so that the output voltage reach to LED operating voltage; 3) Direct short-circuit module output (find a thick wire or tweezers shorted to the output, Note: short-time do not adjust the voltage), then adjust the "constant current potentiometer ADJ-I" so that the current value reach to the preset LED operating current; or connected to the load can also adjust the current. 4) Connected to the LED, and test. Note: The constant current adjustable current, the actual load current must be greater than the set current to enter the constant current mode, otherwise is the constant voltage state of work, rather than the current transferred to 2A, that means connected to any device has changed to 2A. Package includes: 1 x 10A DC-DC LCD Adjustable Step Down Module

Specifications: · 300W 8A 7-32V to 0.8-28V DC CC CV Buck Step-Down Converter Power Supply Step Down Module Adjustable Voltage Regulator LED Driver · High-power, constant current LED driver · Battery charger · Vehicle-mounted power supply · Low voltage system power supply · Non-isolated step-down CC CV Buck module with on-board LED load indicator · Input voltage: DC 7-32 V · Output Voltage: DC 0.8-28 V (Adjustable) · Output Current: 8A (MAX), more than 60Deg please strengthen heatsink · Continuous Current Range: 0.2-8A Adjustable · Output Power: 300W (MAX) · Conversion efficiency: 95% (more input voltage, more efficiency) · Output ripple: 50mV · Working Temperature: industrial (- 40 ° c to +85 °c) (environmental temperature, more than 40 degrees, please reduce power to use, or - enhance cooling) · No-load current: 20mA (input 24V,Output 12V for reference) · Voltage regulation: ± 1% · Load regulation: ± 1% · Dynamic response speed: 200uS 5% · Short circuit protection: YES · Input Reverse protection: No (please comply with a reverse protection or connect a diode at input parts.) · Size: 65 x 47 x 22 mm · On-board LED load indications: red = load present (eg. 'battery charging'), green = no load (eg. 'battery charged' or output disconnected) Features: 1. Fixed turn lamp current is 0.1 times the current value(Used to identify whether the battery is fully charged When charging). 2. Made from a dedicated benchmark IC and high-precision current sensing resistor, proving a more stable constant current, (when 20°C to 100°C constant current 1A, temperature drift less than 1%). Particularly suitable for LED driver. 3. High output current, the max output current can reach 8A. 4. Four high frequency capacitance, can lower output ripple, enhance the work stabilization. 5. Double heat sink design. MOS schottky diode independent heat sink,which heat dissipation is good, and won't affect each other. 6. Using large size Sendust Core and double pure copper wiring, improve working efficiency, reduce fever. 7. 3296 multiturn potentiometer,high accuracy voltage and current regulation, good stability. 8. Double color lamp, working condition be clear at a glance 9. Voltage and current are adjustable,wich effect is good. Applications: 1. High-power LED driver. 2. Lithium battery(or lead accumulator) charge. 3. Vehicle-mounted power supply. 4. Low voltage system power supply. 5. 6V, 12V, 14V, 24V battery charge. 6. On-board laptop power supply. 7. regulated power supply. 8.Low voltage power supply system. Module adjustment: ￢ﾀﾋ 1. When the module output voltage can not be adjusted (the output voltage is always equal to the input voltage) Please adjust the potentiometer counterclockwise 20 laps (20 turns) or more till it works.￢ﾀﾋ 2. Turn trimmers CLOCKWISE to INCREASE, ANTICLOCKWISE to DECREASE. 3. When adjust the blue potentiometer,please use a multimeter to monitor the voltage 4. The trimmer nearest the voltage output adjusts the output CURRENT (CC) 5. The trimmer nearest the voltage input adjusts the output VOLTAGE (CV) Charger application - intructions: 1. First determine the float voltage and charging current required by the battery to be charged (the ‘target battery'). The target battery disconnected from the module output, apply a voltage of 7V - 32V to the module input, being sure to observe correct polarity. 2. Using the CV trimmer, adjust the output voltage to about 5V. 3. Switch your multimeter into its 10A current scale and measure the module's short-circuit output current. Turn the CC trimmer to adjust the current to the charging current required by target battery. 4. Using the CV trimmer, adjust the module's output voltage to the float voltage required by the target battery. 5. Connect the target battery to the module output, observing correct polarity. Charging of the battery should commence ￢ﾀﾋ Constant current LED Driver Application - Instructions: 1. First determine the operating current and maximum operating voltage of the LED you need to drive. 2. With the CV trimmer, adjust the output voltage to about 5V. 3. Switch your multimeter into its 10A current scale and measure the module's short-circuit output current. Turn the CC trimmer to adjust the current to the operating current of your LED. 4. Adjust the CV trimmer to make the output voltage reach the maximum LED operating voltage. 5. Connect LED, test. Package included: 5 x 8A 300W buck adjustable power supply module

Specifications: · 300W 8A 7-32V to 0.8-28V DC CC CV Buck Step-Down Converter Power Supply Step Down Module Adjustable Voltage Regulator LED Driver · High-power, constant current LED driver · Battery charger · Vehicle-mounted power supply · Low voltage system power supply · Non-isolated step-down CC CV Buck module with on-board LED load indicator · Input voltage: DC 7-32 V · Output Voltage: DC 0.8-28 V (Adjustable) · Output Current: 8A (MAX), more than 60Deg please strengthen heatsink · Continuous Current Range: 0.2-8A Adjustable · Output Power: 300W (MAX) · Conversion efficiency: 95% (more input voltage, more efficiency) · Output ripple: 50mV · Working Temperature: industrial (- 40 ° c to +85 °c) (environmental temperature, more than 40 degrees, please reduce power to use, or - enhance cooling) · No-load current: 20mA (input 24V,Output 12V for reference) · Voltage regulation: ± 1% · Load regulation: ± 1% · Dynamic response speed: 200uS 5% · Short circuit protection: YES · Input Reverse protection: No (please comply with a reverse protection or connect a diode at input parts.) · Size: 65 x 47 x 22 mm · On-board LED load indications: red = load present (eg. 'battery charging'), green = no load (eg. 'battery charged' or output disconnected) Features: 1. Fixed turn lamp current is 0.1 times the current value(Used to identify whether the battery is fully charged When charging). 2. Made from a dedicated benchmark IC and high-precision current sensing resistor, proving a more stable constant current, (when 20°C to 100°C constant current 1A, temperature drift less than 1%). Particularly suitable for LED driver. 3. High output current, the max output current can reach 8A. 4. Four high frequency capacitance, can lower output ripple, enhance the work stabilization. 5. Double heat sink design. MOS schottky diode independent heat sink,which heat dissipation is good, and won't affect each other. 6. Using large size Sendust Core and double pure copper wiring, improve working efficiency, reduce fever. 7. 3296 multiturn potentiometer,high accuracy voltage and current regulation, good stability. 8. Double color lamp, working condition be clear at a glance 9. Voltage and current are adjustable,wich effect is good. Applications: 1. High-power LED driver. 2. Lithium battery(or lead accumulator) charge. 3. Vehicle-mounted power supply. 4. Low voltage system power supply. 5. 6V, 12V, 14V, 24V battery charge. 6. On-board laptop power supply. 7. regulated power supply. 8.Low voltage power supply system. Module adjustment: ??br /> 1. When the module output voltage can not be adjusted (the output voltage is always equal to the input voltage) Please adjust the potentiometer counterclockwise 20 laps (20 turns) or more till it works.??br />2. Turn trimmers CLOCKWISE to INCREASE, ANTICLOCKWISE to DECREASE. 3. When adjust the blue potentiometer,please use a multimeter to monitor the voltage 4. The trimmer nearest the voltage output adjusts the output CURRENT (CC) 5. The trimmer nearest the voltage input adjusts the output VOLTAGE (CV) Charger application - intructions: 1. First determine the float voltage and charging current required by the battery to be charged (the ‘target battery'). The target battery disconnected from the module output, apply a voltage of 7V - 32V to the module input, being sure to observe correct polarity. 2. Using the CV trimmer, adjust the output voltage to about 5V. 3. Switch your multimeter into its 10A current scale and measure the module's short-circuit output current. Turn the CC trimmer to adjust the current to the charging current required by target battery. 4. Using the CV trimmer, adjust the module's output voltage to the float voltage required by the target battery. 5. Connect the target battery to the module output, observing correct polarity. Charging of the battery should commence ??br /> Constant current LED Driver Application - Instructions: 1. First determine the operating current and maximum operating voltage of the LED you need to drive. 2. With the CV trimmer, adjust the output voltage to about 5V. 3. Switch your multimeter into its 10A current scale and measure the module's short-circuit output current. Turn the CC trimmer to adjust the current to the operating current of your LED. 4. Adjust the CV trimmer to make the output voltage reach the maximum LED operating voltage. 5. Connect LED, test. Package included: 3 x 8A 300W buck adjustable power supply module

Module parameters: Input voltage: 6V-32V Output voltage: 1.5-32V continuously adjustable (can only be used step-down module, the input must be greater than the output 1.5V or more) Output current: adjustable, the maximum 5A (recommended in the use of 4.5A, when exceed 3A or 35W the best to strengthen the cooling! Suggest using a small fan at the input terminal! Constant current requires an output voltage of 2V or more to be adjusted, the current regulation, only in the constant current state will work, constant current is mainly directly used to the low resistance battery charge or LED working current limit and other use, please make sure about this before you order it. Output power: up to 75W (recommended in the use of 50W, if uses large pressure difference, please reduce the power) Operating temperature: -20 to +70 degrees (pay attention to the power tube temperature, when exceed please strengthen the cooling) Operating frequency: 180KHz Conversion efficiency: up to 96% Short circuit protection: Yes, constant current Current set constant current value Over-temperature protection: Yes (over-temperature automatically turn off the output) Input reverse protection: Yes Output reverse flow: None, for charging please add a diode! Installation: 8pcs pillars, 8pcs 3mm screws Wiring method: wiring terminal or soldering terminal, VIN for the input, VOUT for the output Module size: 65.6mm x 40mm x 25mm (L*W*H) Weight: 77g Calibration method: The module has a calibration function, don't worry about measuring inaccurate problems, if you find the measurment is not inaccurate you can use the following methods calibration. Just need to calibration once for the first time! Voltage calibration: In the case of power down, press and hold the "SET" button, power on, enter the voltage calibration mode, the LCD screen starts to flash, release the set button, press the "Set" key to add, "OK" to reduce, calibrate correct input voltage, such as: the input voltage is 12.65V, then adjust the current voltage to 12.65V, after 2 seconds it automatic save, power off and exit to complete the calibration! Current calibration: For no-load current display, or current is too large! In the case of power off, press and hold the "OK" button, power on, enter the current calibration mode, the LCD screen starts to flash, release the "OK" button, press the "Set" button to add, "OK" button to reduce, calibrate correct current, such as: no load display 0.02A, then adjust to 0.00A, after 2 seconds it automatic save, power off and exit to complete the calibration! Special Note: Some customers feedback that the output voltage can not be adjusted, this is due to the factory default voltage is 20V. When you encounter this problem, please counterclockwise rotation ADJ-V potentiometer 10 laps above, until the voltage value changes, and then the module can be normal adjustment of the voltage. Note: USB output voltage and the module output voltage needs to be consistent, when the USB indicator does not light, means USB has no output, when the USB light is set, it is not fixed 5V output, when charging USB device please make sure the voltage is 5V, if higher than 5.5V screen will flash, it will be reminded to adjust the voltage, otherwise it may damage your device, USB output power is turned off by default, to ensure that mistakenly plug USB will not damage the device. Setting Description: Setting key can be set to four kinds of display mode: 1. F-0 mode: display output voltage; 2. F-1 mode: display input voltage; 3. F-2 mode: alternately display input and output voltage; 4. USB mode: display USB output voltage and turn on or off the USB output; Instructions: press the "set" button, the cycle shows four kinds of display mode, the corresponding indicator light will on/off, press the "OK" key to save and exit, press the "OK" button to switch the LCD backlight. Package includes: 1 x 5A DC-DC Adjustable Step Down Power Supply Module (Board color will send in random)

Optional: Type 1: CNC power supply version Type 2: CNC power supply Modbus version Feature: Input voltage: 6V-32V Output voltage: 0-32V continuously adjustable (can only be used as step-down module, the input must be greater than the output 1V or more) Output current: Adjustable, the maximum 5A (if temperature over 60 degrees, please strengthen the cooling, there are reserved fan installation location and terminal blocks!) Output power: Up to 160W (recommended in the use of 120W, large pressure difference, please reduce the power) Operating temperature: -10 to +75 degrees (Note the use of power tube temperature, exceed the temperature please strengthen the cooling, there are reserved fan installation location and terminal) Resolution accuracy: Voltage 0.01V, Current 0.01A Conversion efficiency: up to 95% Short circuit protection: Yes, constant current the current setting of constant current value Input Anti-Reversed: Yes Output reverse flow: None, for charging please add a diode! Wiring method: Terminal VI + for the input positive, VO + for the output positive Module size: 79mm x 43mm x 46mm (L*W*H) Hole size: 76mm x 39mm (L*W) Weight: 75g Package includes: 1 x Adjustable CNC Step-down Power Supply Setting description: Output voltage setting: short press "CV" key, enter the voltage setting mode, turn the potentiometer to adjust the current voltage, press the potentiometer can switch to adjust voltage value, after adjust short press CV "key to save and exit. Output current setting: short press "CV" key, enter the current setting mode, turn the potentiometer to adjust the current value, press the potentiometer can switch to adjust voltage value, after adjust short press CV "key to save and exit. (note that when constant current, indicator will be turned to red, constant current adjustable current, the actual load output current must be greater than the set current to the constant current mode, otherwise is working as constant voltage state.) Display mode setting: short press "MODE" to switch the display mode, IN is the input voltage, OUT is the output voltage Switch output setting: directly short press the potentiometer key, can open or close the output voltage, turn off the current position display OFF words Modbus address setting (Type 2): short press "SET" key, enter the address setting mode -Id, the default is 1, turn the potentiometer to adjust the current address, range is 1-255, after adjustment and then press the "SET" key to save and exit, you can also set the address through the host computer software.

DC-DC Adjustable Step Up Power Module Description: Show some use more advanced microprocessor voltmeter, boost part by the United States imported boost controller, by utilizing the power MOSFET's on-resistance and eliminates the need for a current sense resistor, maximizing efficiency, efficiency up 96.4%. Imports of high-power low-impedance MOS, big package, high current, high efficiency Schottky, wide thick PCB traces, power efficiency and low temperature rise is guaranteed. Wide voltage, output voltage when the input can be achieved in more than 20V 128W output power. Long-life high-frequency switching power supply for high-capacity low resistance (low ESR) electrolytic capacitor, so that the lower output ripple. Parameters:   Input voltage: 3 ~ 35V DC (Note: The input voltage is less than 4V, onboard voltmeter failure) Input Current: 9A (max) Output voltage: 3.5 ~ 35V DC (This board is a step-up board, the output voltage to be> = input voltage) Output Current: 6A (max) Output Power: 75W, (when the input voltage is greater than 20V output can reach 128W) Conversion efficiency: 96.7% (maximum) Output ripple: 24mV (TYP) Onboard voltage meter range: 4 ~ 40V, error + -0.1V Short circuit protection: (limit current 14A). Tips: When access to high-power load, due to the impact of current are just machines Assembly limiting self-locking protection, it is recommended to boot, then access to the load. Input Reverse Polarity Protection: None (if necessary, please enter the string into the high current diode) A key switch digital tube light off, a key switch input and output voltage measurements. (On-board voltage indicator "IN" highlight the input voltage, "OUT" highlight the output voltage). Applications:   DIY a power supply, 5V input can be output can be 5-35V adjustable. Power supply for your electronic device, according to your system can set the output voltage value. For example 3.7V Lithium Mobile Power l do 5V, 7.4V or 12V 19 liters to the laptop power supply. As car power supply for your laptop, PDA or a variety of digital products supply. Package included: 1 x DC-DC Adjustable Step Up Power Module  

Original Hiland 0-30V 2mA - 3A Adjustable DC Regulated Power Supply DIY Kit Short Circuit Current Limiting Protection English manual: Description:   This circuit voltage can be from 0 v, output current can be ma from 2 to 3 a continuously adjustable, set the output current, if the experiment circuit exceeds the current (including short circuit), the circuit protection immediately, not cause danger such as burning device, it is electronic manufacture's right-hand man. It is never afraid of the fireworks! Like making all kinds of audio circuit friend, often due to the different working voltage and circuit have a headache, this circuit can also two series into a dual power supply, can meet the needs of all sorts of use. Feature: Input voltage: 24V AC Input current: 3A maximum Output voltage: 0 to 30V continuous adjustable Output current: 2mA - 3A continuously adjustable output voltage ripple: minimum 0.01% All straight inserted element, make easy, only an adjustable components (used to adjust the voltage of 0 v) LED indicator for output over current, when the current exceeds the set data circuit protection, LED lighting, over load and short circuit protection Minimum current (2mA) under the measurable leds and zener diode Notice: Power production belongs to the high voltage large current circuit, please be sure to carefully, otherwise may cause harm to the personal safety Package included: 5 x Adjustable DC Regulated Power Supply DIY Kit

FAST AFFORDABLE COURIER SHIPPING TO SOUTH AFRICA Description: Name: LM2596 Multi-channel Switching Power Supply Size: 100mmx68mm Supply voltage range: 5V-40V The layout is regular, and the layout is strictly in accordance with the filter circuit design, with 3.3V/5V/12V, ADJ adjustable output of the 4-channel power, output ripple is small, easy to use, suitable for student competition module and personal project development. Note: Module ADJ output voltage is generally lower than the supply voltage of about 1V, the module single-circuit current is maximum 3A, the total current does not exceed 5A. Package included: 1 x LM2596 Multi Switch Power Supply 3.3V/5V/12V/ADJ Adjustable Voltage DC-DC Step Down Power Module LM2596 Multi Switch Power Supply 3.3V/5V/12V/ADJ Adjustable Voltage DC-DC Step Down Power Module LM2596 Multi Switch Power Supply 3.3V/5V/12V/ADJ Adjustable Voltage DC-DC Step Down Power Module LM2596 Multi Switch Power Supply 3.3V/5V/12V/ADJ Adjustable Voltage DC-DC Step Down Power Module

Description: Supply: 220V EU Plug /AU 220V Plug / 110V US Plug DPS-305BF 30V 5A DC Digital Control Laboratory Adjustable Power Supply for Laptop Repair DPS series digital input adjustable DC power supply is designed for laboratory, school, production lines and electronic repair designed for use. Voltage stability is high, small ripple factor, has improved the short circuit protection and overcurrent protection. Due to the voltage value is a digital keyboard input, shorten the voltage setting time, completely overcome the traditional potentiometer adjustment poor contact caused by voltage instability phenomenon. The internal power supply containing electronic switch, can conveniently open the output load. DPS305BM/BF have the same function, but different current precision. DPS305CM/CF have the same function, but different current precision. DPS305CM/CF have BM/BF all functions,  in addition they have the storage and combination lock function. DPS - 305 BM/CM: Four digit current display measuring accuracy: 0000-0.450A, ±0.001 A                                                                                                                              0.450-5 A, ±0.01 A DPS - 305 BF/CF: Five digit current display measuring accuracy: 00000-0.0450A, ±0.0001A                                                                                                                          0.0450-0.450A, ± 0.001A                                                                                                                          0.450-5 A, ±0.01 A DPS-305BM in SKU144061     DPS-305BF in SKU144068 DPS-305CM in SKU144065    DPS-305CF in SKU144070 Specification: 1, rated working conditions and dimensions Power supply voltage 220V + 10%50 / 60Hz Working conditions: 0-40 temperature relative humidity 80% Storage temperature: - 10-70 C 70% relative humidity Dimensions: 265 x 128 x 150mm (D * W * H) 2, regulated state parameters The voltage output from 0 to 30V can be continuously adjusted (to distinguish the value of 0.1V) The precision of output voltage: + 0.1V Voltage stability: Load stability: Recovery time: 100uS Ripple noise voltage: Temperature coefficient: 3, a constant current state parameters Constant current value: 305 CM 5A Ma constant current maximum 500 mA 303CM 3A Ma constant current maximum 500 mA Constant current output current from 0 to the nominal value of continuous adjustable (to distinguish the value of 0.01A) Constant current output accuracy: + 0.01A (MA constant current precision: + 1mA) The current stability of the Load stability Ripple noise current 4, current and voltage display accuracy Voltage display accuracy: + 0.1V (constant current state) Current display accuracy: + 0.01A (constant pressure) Ma current display accuracy: + 1mA (constant pressure) 5, storage capacity Storage and call ten current,

1.25-32V DC Adjustable Power Step Down Module With DIY Case More information:  http://forum.Racer Gadgets.com/forum-topic-88337.html Description: Onboard voltmeter, ammeter, power meter Onboard USB interface (note: USB output voltage and the module output voltage is consistent, not fixed 5V output, To make sure the front USB device charging transferred to 5V, or else it may damage your equipment) High power, high efficiency, 5A, low ripple Use as a normal blood pressure modules with overcurrent protection capability As various voltage lithium batteries, batteries, nickel-cadmium nickel-metal hydride batteries (battery) charger for solar panels, wind turbines and other occasions Use a high-power LED constant current drive module With a constant voltage and constant current modes, the module has a light indicates which mode is currently in When used as a lithium battery charger, you can set the float voltage and charge current, there is light indicates that it is charging or is already full Having a limiting protection Feature:   Input voltage: 5-36V Output voltage: 1.25-32V continuously adjustable (can only be done step-down module, input must be greater than the output 2V above) Output current: adjustable, 5A (recommended for use within 4.5A, constant need to adjust the output voltage of 2V or older to current regulation, only in the constant state will work, and if used the red phone, not how much current regulation, the red phone number, and constant low resistance mainly to charge the battery directly or limiting the use of current limiting LED work, but also hope that buyers know.) Output Power: Max 75W (recommended for use within 50W, big differential pressure to reduce power use, please) Working temperature: -40 to + 85 degrees Operating frequency: 180KHz Conversion efficiency: up to 96% Overtemperature protection: (automatically shut off the output after overtemperature) Input reverse polarity protection: None, (if necessary, please enter the string into the high-current diode) Connection: terminals or solder terminals, V-IN is the input, V-OUT output Module size: 68.2mm x 38.8mm x 15mm Package included: 1 x 1.25-32V DC Adjustable Power Step Down Module 1 x DIY Case  (The Case is For DIY, Delivery of spare parts)

Specification:   1. With the voltmeter shows voltage meter error ± 0.1V, the range 0-40V. (Note: To ensure the accuracy of the voltmeter, please ensure that the input voltage of 4V and above) 2. Touch the key to switch measuring input or output voltage, and has a light show which is being measured voltages 3. Power off memory function, show that road after power voltage values measured for the last time 4. Press the touch button for 3 seconds to turn off LED display, touch the button again to turn on the LED display 5. The band terminals, no iron can also be easy to use, and retention wire connection point 6. Input voltage 4.0-40V (input voltage to the output voltage must be higher than 1.5v.) 7. The adjustable output voltage range of 1.25V-37V continuously adjustable (input voltage must be higher than the output voltage to a high of about 1.5V) 8. The maximum output current up to 3A, normal and stable operating current of 2A 9. the internal oscillation frequency 150KHz, belonging to the second generation of switching voltage regulator, low power consumption, high efficiency 10. The current switching LEDs are red   Package Included:   10 x DC-DC step down voltage converter  

Feature: Input voltage: 8-60V, please keep the balance, it is recommended to use within 55V. Output voltage: 3V-32V continuously adjustable, automatically save the last set voltage (input voltage must be higher than the output voltage 1V above). Output current: maximum 7A, it is recommended to use within 5A, when the heat is big, please solve the heat dissipation problem by yourself. Note: The current size is adaptive to load, not adjustable. Anti-anti-input: YES Short circuit protection: YES Accuracy: 1%, three voltage display, two current display, the unit is A. Conversion efficiency: up to 95% (efficiency is related to input, output voltage, current and pressure). Load regulation: S (I) ≤0.8%, voltage regulation: S (u) ≤0.8% Size: 62mm * 44mm * 18mm Weight: 45g If used for charging, when charging is completed, please disconnect the battery terminal first, and then disconnect the input to prevent battery backflow damage to the module! Or add a anti-reflux diode at output. Calibration instructions: The module with a calibration function, do not worry about the problem of measurement shows inaccurate, if you find that the display is inaccurate or the value of stuck, or left and right buttons can not be mobilized voltage, you can use the following method of calibration. Voltage calibration method: Under no-load condition, press and hold the left button to connect to the power supply, release the left button, the voltage value of the display begins to flash, measure the output voltage with a multimeter, and press the left and right keys to set the same value with the meter, Such as: multimeter measurement is 12.6V, the module set to 12.6V, it can be automatically saved three seconds, re-power voltage calibration is completed. The error can be calibrated within 0.05V, if the error is bigger, you can try again. Current calibration method: After calibrating the voltage, load, first use a multimeter to measure the actual current value, then power off the board, press and hold the right button to connect to the power, release the right button, the screen current value starts flashing, press the left and right button to adjust value the same with the multimeter, for example: the multimeter measurement value is 1.8A, the module can be adjusted to display 1.8A, three seconds automatically saved, re-power on the current calibration is completed. Package includes: 1 x Power Supply Module with housing

Specification: 1. With the voltmeter shows voltage meter error ± 0.1V, the range 0-40V. (Note: To ensure the accuracy of the voltmeter, please ensure that the input voltage of 4V and above) 2. Touch the key to switch measuring input or output voltage, and has a light show which is being measured voltages 3. Power off memory function, show that road after power voltage values measured for the last time 4. Press the touch button for 3 seconds to turn off LED display, touch the button again to turn on the LED display 5. The band terminals, no iron can also be easy to use, and retention wire connection point 6. Input voltage 4.0-40V (input voltage to the output voltage must be higher than 1.5v.) 7. The adjustable output voltage range of 1.25V-37V continuously adjustable (input voltage must be higher than the output voltage to a high of about 1.5V) 8. The maximum output current up to 3A, normal and stable operating current of 2A 9. the internal oscillation frequency 150KHz, belonging to the second generation of switching voltage regulator, low power consumption, high efficiency 10. The current switching LEDs are red Package Included: 10 x DC-DC step down voltage converter

Features: The voltmeter resolution: ±0.1V The voltmeter digital display range: 0V - 45V The voltmeter input voltage range: DC 4V - 40V Output voltage: continuous adjustable (1.3V -37V) Output current: 2A (Max 3A) Size:65 x 35mm Description: With terminal block Over-heat protection and short circuit protection function LED digital voltmeter tube, it can adjustable accurate aimed at your multimeter. Press the key "S1" to let the display show the input or output voltage. when the green led light, it shows output, the red show input. Touch the button to switch the measurement input or output voltage, and indicator light shows which voltage is being measured, it can save the settings, even if the power off and restart. Using 150KHz internal oscillation frequency, belonging to the second generation switching voltage regulator, low power consumption and high efficiency. Note: To guarantee the accuracy of the voltmeter, make sure the input voltage above 4V. The input voltage must be 1.5V higher than the output voltage or 1.5V above. Package included: 5 x LM2596 DC-DC 1.3V -37V 3A adjustable buck power module

Specification: Module name: 250W boost static current module Module properties: non-isolation boost module (BOOST) Input voltage: DC 8.5-48V Input current: 10A (MAX), if exceeds 8A, please strengthen the heat dissipation Static working current: 10mA (12V up 20V, the higher the output voltage is, the higher the static current will increase) Output voltage: 10-50V continuous adjustable if necessary (default output 19V delivery) Output current: 10A MAX, if over 6A please strengthen heat dissipation. (Related to the input and output voltage difference, the larger the voltage difference is, the smaller the output current is) Constant current range: 0.2-8A Output power = input voltage * 10A, for example: input 12V * 5A= 60W, input 24V * 5A = 120W, input 36V * 5A = 180W, input 48V * 5A= 240W If you need more power, you can use two modules in parallel, such as the output of 10A, which can be connected in parallel with two modules, transfer the current of each module to 5A. Working temperature: -40 - +85??(please strengthen the heat dissipation when the ambient temperature is too high) Work frequency: 150KHz Conversion efficiency: maximum 96% (efficiency is related to input/output voltage, current, voltage difference) Over-current protection: yes (if more than 13A, it will automatic reduce the output voltage, a certain range of errors) Input reverse connection protection: yes, (less than 5A if you need more reverse connection current in the input string) Install mode: 4 3mm screw holes Connection mode: wiring output Module size: 69 x 35mm The adjustment method of output voltage/current: 1. Adjust the RV1 potentiometer according to your battery or LED, set the output voltage you need. For example, 10 series of LED voltage adjust 37V. 2. Turn the RV2 potentiometer around 30 times clockwise, and set the the minimum output current, connect the LED, and adjust the RV2 potentiometer to set the current you need. Note: please do not adjust the current in the short circuit, the circuit structure of the boost module cannot be adjusted in the short circuit. Application scope: 1. Make a stable power supply, input 12V, and output can be adjustable 12-50v. 2. Power supply for your electronic equipment, can set output value according to your system voltage. 3. Power supply for your laptop, PDA or various digital products as the on-board power supply. 4. DIY a large power laptop mobile power supply with a large lithium battery pack of 12V capacity, let your laptop go wherever it goes. 5. Stabilized solar panels. 6. Charge battery, lithium battery, etc. 7. Drive high-power LED lights. Package included: 1 x Boost power module

Module parameters: Scope: High-power LED constant current driver, rechargeable lithium batteries (including ferroelectric), 4V, 6V, 12V, 14V, 24V battery charging, nickel-cadmium nickel-metal hydride batteries (battery) charging, solar panels, wind generators Input voltage: 7-40V Output voltage: continuously adjustable (1.25-35V) (applied to the input voltage is higher than the output voltage applications can boost) Output Current: 8A, 10A maximum time within the (power tube temperature exceeds 65 degrees, please add cooling fan, 24V 12V 5A turn within generally be used at room temperature without a fan) Constant Range: 0.3-10A (adjustable) module over 65 degrees, please add fan. Turn lights Current: current value * (0.1), turn the lamp current and constant value linkage, such as constant value of 3A, turn the lamp current is set to a constant current of 0.1 times (0.1 x 3A = 0.3A), when the constant 2A, when adjusted to the current value, then turn the lamp current constant current of 0.1 times (0.1 x 2A = 0.2A). This version is a fixed 0.1 times (actually turn the lamp current value is probably not very accurate) is full of instructions for charging. Minimum pressure: 1V Conversion efficiency: up to about 95% (output voltage, the higher the efficiency) Operating frequency: 300KHZ Output Ripple: about the ripple 50mV (without noise) 20M bandwidth (for reference) Input 24V Output 12V 5A measured Operating temperature: Industrial grade (-40 ??to + 85 ?? (please note the actual use of the power tube temperature, the temperature is too high, please enhance heat dissipation) No-load current: Typical 20mA (24V switch 12V) Load regulation: ± 1% (constant) Voltage Regulation: ± 1% Constant accuracy and temperature: the actual test, the module temperature changes from 25 degrees to 60 degrees, the change is less than 5% of the current value (current value 5A) Dynamic response speed: 5% 200uS Potentiometer adjustment direction: clockwise (increase), counterclockwise (decrease) Indicator: color indicator, charging indicator light red, fully charged light green (no load is green) Output short circuit protection: Yes, constant current (constant current setting values) Input reverse polarity protection: None, Output anti-anti-perfusion: no, for charging the battery needs additional two diodes! Connection: Terminals Package included: 3 x DC-DC Step Down Adjustable Power Supply Module

LED Driver Charging Constant Current Voltage Step Down Buck Module Feature: This module uses the LM2596 chip, high efficiency (up to 92%), low heat, can be very easily used to above 3A current, in conjunction with the original TI op amp control output current, so the overall output is very stable. This module uses the original Sanyo low ESR filter capacitor, you can make low ripple voltage to 50mV! This module uses machine placement, reflow soldering. This module is an adjustable buck module, the module can be adjusted from the blue adjustable resistor to change the output voltage. Input and output differential pressure is 2V, the minimum can be output 1.23V. Module indicated IN - (negative input), IN + (positive input), OUT - (negative output), OUT + (positive output), please note must be correct connected, otherwise may cause damage to the module. Description: Nature of the module: Non-isolated step-down module Rectification: Non-synchronous rectification Input voltage: 7V - 35V Output voltage: 1.25V - 30V Output current: Adjustable, 3A (maximum) Transfer efficiency: 92% (maximum) Switching frequency: 150KHz output ripple: 50mV (maximum) 20M Kbps Load regulation: ±0.5% Voltage regulation: ±2.5% Operating temperature: -40°C to +85°C Dimension: 48 x 23 x 14mm (L x W x H) Battery charging method: 1. Make sure the battery float voltage and charging current, the module input voltage; 2. Adjustment constant potentiometer, the output voltage is adjusted to about 5V. 3. Use the multimeter (10A current) measuring the output short-circuit current, meanwhile adjust the constant current potentiometer make the output current reaches a predetermined charge current value; 4. Turn lamp current default is 0.1 times charging current (constant current value), if you need to adjust please adjust the turn lamp current potentiometer; (generally doesn't need adjustment) 5. Adjustment constant potentiometer allows the output voltage reaches the float voltage; 6. Connected to the battery and try to charge. (1,2,3,4,5 steps are for the module input connected to the power supply, output-load battery is not connected.) LED constant current driver using method: 1. Make sure that the drive LED operating current and maximum working voltage; 2. Adjustment constant potentiometer, output voltage adjusted to about 5V. 3. Use the multimeter (10A current) measuring the output short-circuit current, meanwhile adjusting the constant current potentiometer allows the output current reaches a predetermined LED working current; 4. Adjustment constant potentiometer allows the output voltage reaches the maximum operating voltage LED; 5. Connect LED, test machine. (1,2,3,4 steps are module input connect to the power supply, output-load is not connected LED lights.) Package included: 1 x Buck module

Description: Input Voltage: DC 3V-35V Output Voltage: DC 4V-40V (continuously adjustable) Efficiency: 94%(MAX) Size: L37mm*W32mm*H15mm Working Temperature: -40-+85 degrees Load capacity: Max 80W The way of Connection: the connection terminal does not need to be soldered, the "IN" is the input, and the "OUT" is the output. Note: When the output voltage is closer to the output voltage,the carrying capacity is higher,and the efficiency is also higher. Measurement reference table: Input voltage Output voltage Maximum output current Power 3V 5V 1A 5W 5V 12V 1A 12W 5V 9V 1.5A 13.5W 9V 12V 2A 24W 12V 19V 1.5A 28.5W 12V 24V 1.2A 28.8W 19V 24V 2A 48W 24V 30V 2A 60W 30V 35V 2A 70W Package included: 3 x DC-DC 3V-35V To 4V-40V Step Up Power Module

1PCS XL6009 DC-DC Adjustable Step-up Power Converter Module is available now from our US and UK warehouse Free shipping to US and UK in 3-6 business days ship to  Other European countries in 7-10 days 3A XL6009 DC-DC 50KHz Adjustable Step-up Power Converter Module Specification: Wide Input voltage: 3V-30V Output Voltage: 4-35V (Adjustable) Output current: rated current 3A MAX (Heat-sink Needed) If you need its output power greater than 15W, please add with heat-sink Conversion efficiency: Up to 92% (output voltage higher, the higher the efficiency) Switching Frequency: 50KHz Rectifier: Non-Synchronous Rectification Short circuit protection: current limiting, since the recovery Operating temperature: Industrial grade (-40 ℃ to +85 ℃) (output power 10W or less) Full load temperature rise: 40 ℃ Load regulation: ± 0.5% Voltage regulation: ± 0.5% Size:47 x 26 x 15 mm Package included: 1x XL6009 DC-DC 50KHz Adjustable Step-up Power Converter Module

3Pcs Adjustable XL6009 Step Up Boost Voltage Power Supply Module Converter Regulator Feature: Solidly-structured Built-4A efficient MOSFET switch, so that the efficiency up to 94% Ultra-high switching frequency, you can use a small-capacity filter capacitors that can achieve very good results Specification: Input voltage: 3.5V ~ 32V Output voltage: 5V ~ 35V Output current: rated current is 2.5A, maximum 3A (Additional heatsink is required) Load regulation: ±0.5% Voltage regulation: ±0.5% Work Temperature: -40°C ~ +125°C Maximum power: 10W Size: 4.1 x 2.1 x 1.3cm Note: This can't be used to step down voltage Package included: 3 x XL6009 step up voltage module