Adjustable voltage

Buy 3pcs LM2596 DC-DC Adjustable Voltage Regulator Module with Voltage Meter Display for R328.00

Buy LM2596 DC-DC Adjustable Voltage Regulator Module with Voltage Meter Display for R227.00

Geekcreit US Plug 110V DIY LM317 Adjustable Voltage Power Supply Module Kit

Buy LM317 Adjustable Voltage EU 220V Power Supply Module Kit Electronics DIY Spare Parts for R360.00

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Buy 5Pcs DC/AC To DC LM317 Power Continuous Adjustable Voltage Regulator 1.25V-37V for R415.57

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Buy SINOTIMER SVP-977 230V 63A8 0A Home Usage Adjustable Voltage and C... (CURRENT: 80AWITHOUTBACKLIGHT) for R605.00

Features: One way adjustable signal generator output. Convenient to provide the pulse signal With a logical pen function. For convenient the logic level of test circuit With one way buzzer. You can test the wires on and off (connect the wires to the power positive and signal input, the wire on - the buzzer sound). You can also test the low-frequency signal (input the signal from the signal input, if there is a signal, the buzzer sound) Specifications: Power: 2W Voltage: 220V Plug: EU plug Output voltage: 1.25V - 12V regulated output continuously adjustable. PCB board size: 7.3 x 6.8cm (W / L) Shell Size: 11 X 6.9 X 41.5cm (L / W / H) Weight: about 295g Package included: 1 x DIY LM317 Kit

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

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

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

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

Specification: Power Range: 4-6.5 KW Frequency: 50/60 Hz Maximum Output: DC 90V 3.5A Excitation Voltage: 90-100V AC Voltage Output: 120V/240V Feedback Voltage: 14-24V with an Average of 18V Auto Voltage Adjusting Accuracy: ≤ ±1% Continuous Working Time: ≥ 20 Hours Installation-Center Distance: 110 ± 1mm Features: Voltage Output Increase with Loading. Built-in Full-Wave Output Bridge Rectification. Stable Voltage Output with Negative Voltage Feedback. Over Voltage, Over Current and Short Circuit Protection. Large Manual Adjustable Voltage Output Range of 160V ~ 260V for 240V output. Package included: 1 x Voltage regulator

FAST AFFORDABLE COURIER SHIPPING TO SOUTH AFRICA Description: Material: plastic, metal Suitable for electric furnace, water heater, lamps, small motor, electric iron. etc Input Voltage: 220V Maximum Power: 2000W Adjustable Voltage: 90-220V AC Size: 5.3 x 4.7 x 2.8 cm Life span and easy installation Chip is 25A. If you use this for voltage adjustment, 1000W, under 5A is nice. If you use this for electrical machine, under 3A is nice. How to use: Connect this device with lamp or home appliance in a series connection, that is, Using the module's two wires connected to lamp or home appliances' disconnect FireWire or zero line. You can play a brightness adjustment, speed, pressure, temperature control effect, very convenient to use. Package included: 20 x Voltage regulator 20pcs 2000W Speed Controller SCR Voltage Regulator Dimming Dimmer Thermostat 20pcs 2000W Speed Controller SCR Voltage Regulator Dimming Dimmer Thermostat 20pcs 2000W Speed Controller SCR Voltage Regulator Dimming Dimmer Thermostat

3Pcs 2000W Speed Controller SCR Voltage Regulator Dimmer Thermostat Description: Material: plastic, metal Suitable for electric furnace, water heater, lamps, small motor, electric iron. etc Input Voltage: 220V Maximum Power: 2000W Adjustable Voltage: 50-220V AC Size: 5.3 x 4.7 x 2.8 cm Life span and easy installation Chip is 25A. If you use this for voltage adjustment, 1000W, under 5A is nice. If you use this for electrical machine, under 3A is nice. How to use: Connect this device with lamp or home appliance in a series connection, that is, Using the module's two wires connected to lamp or home appliances' disconnect FireWire or zero line. You can play a brightness adjustment, speed, pressure, temperature control effect, very convenient to use. Package included: 3 x Voltage regulator

L7805CV 5V Voltage Regulator 1A TO-220 The L7805 three-terminal positive regulator is packaged in a TO-220 package making it useful in a wide range of applications. These regulators can provide local on-card regulation, eliminating the distribution problems associated with single point regulation. The L7805 employs internal current limiting, thermal shut-down and safe area protection, making it essentially indestructible. If adequate heat sinking is provided, they can deliver 1.5A output current. Although designed primarily as fixed voltage regulators, these devices can be used with external components to obtain adjustable voltage and currents.   Output Current to 1.0A Regulated at 5 Volts Thermal Overload Protection Short Circuit Protection   This item is available in stock and is not drop shipped. This avoids delays, customs charges and extra VAT.

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

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

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,