Pcb voltage monitor

PCB FOR NEGATIVE VOLTAGE MONITOR USING LM3914; 10 LEDs OR BAR

Monitor Audio Silver W-12 Subwoofer Features Ultra long-throw 12-inch driver featuring dished C-CAM cone Triple suspension for ultimate linearity ensuring control at high power and excursions Oversized black anodised 3-inch voice coil which provides high power-handling and low distortion Powerful 500 W RMS Class-D amplifier with switching power supply provides instantaneous delivery of high current when required DSP processing with all control features and crossover performed digitally Automatic Position Correction plus automatic room setup feature using microphone for simple system optimisation USB for firmware updates Three preset EQ mode settings (Music, Movie, Impact) 12 V trigger provides switching control from AV amp or processor Solid 25 mm-thick (1-inch) MDF cabinet construction Heavy radial cabinet bracing Top-mounted control panel and mic. input for easy access to main features Selected premium-quality wood veneers in high-gloss lacquer and Satin White finishes The Monitor Audio Silver Series subwoofer delivers seismic bass right down to 22 Hz using a powerful, long throw 12-inch driver. The Silver W-12s over-specified driver assembly employs a hugely powerful magnet system and massive voice coil to deliver immense power from the compact sealed cabinet. A heavy-duty diecast basket not only holds the massive system rigidly together, but also assists thermal sinking to keep the driver cool. For the Silver W-12 subwoofer Monitor Audio specified a 500-watt Class-D amplifier and power-supply module from highly-regarded amplifier specialist Hypex; this provides incredible headroom and utilises advanced switch-mode power conversion techniques. A powerful DSP has been employed to deliver the best performance and filter characteristics, while running the unique APC (Automatic Position Correction) system. The APC is a completely in-house development, designed to automatically correct for room modes. It uses a microphone and test tones to calculate detrimental room modes and correct frequency response, optimising it for the room and position. This is a simple and quick automated process that is a complete revelation to the installer and ensures the user can enjoy the subwoofer quality without positioning restrictions. At the heart of the Silver W-12 lies a sophisticated 32-bit micro-controller, monitoring performance thousands of times per second, ensuring the system can deliver the best possible bass. It will never become over-driven or distorted, even at maximum power. Specifications Low Frequency Response 20 Hz (Typical IEC room) Upper Frequency Limit 40 120 Hz variable Low Pass Filter Alignment Active 4th order 24 db/octave Amplifier Power Output 500 W continuous Amplifier Classification Class-D amplifier with switched-mode power supply (SMPSU) Bass EQ Profiles 1: Movie 2: Music 3: Impact Phase Control 0 & 180 degrees Auto Sensing Line Level >2 mV Input Level Requirements Standby after 20 minutes if no signal sensed Driver Complement 1 x 12 C-CAM subwoofer driver featuring triple suspension and 3 long throw voice coil 12 V Trigger Input 5 12 V via 3.5 mm mono mini-jack socket Dimensions (excluding grille, amp and feet) 340 x 340 x 380 mm(13 3/8" x 13 3/8" x 14 15/16) Dimensions (including grille, amp and feet) 370 x 340 x 410 mm(14 9/16" x 13 3/8" x 16 1/8) Mains Input Voltage 110 120 Vac / 220 240 Vac 50/60 Hz (Electronically Auto selected) Power Consumption 400 W / 0.5 W in Standby (ErP approved) Weight (unpacked) 20.1 kg

Monitor Audio Gold W15 Subwoofer Technology Ultra long throw 15 C-CAM® (Ceramic-Coated Aluminium/Magnesium) driver featuring triple suspension Large black anodized 3 voice coil and double stack motor system provides high power handling and low distortion Carefully optimized motor system design to reduce heat and improve efficiency Powerful 650Watt DSP Controlled amplifier (D2 Audio) Advanced full bridge switch mode power supply (SMPSU) Capable of delivering over 1200 watt peak power 12V trigger - provides switching control from A.V amp or processor Rigid, 25mm (1) thick M.D.F construct Heavy radial cabinet bracing with separate amplifier partition Front mounted control panel for easy access and viewing The LEO system provides Automatic Room Mode Correction (ARMC) for easy set up and perfect sound quality Remote control with 4 user EQ settings Selected real wood veneer or high gloss lacquer finishes. Specifications System Format Sealed Cabinet. 25mm M.D.F construction with internal bracing. Sealed amplifier compartment Low Frequency Limit 18 Hz Upper Frequency Limit 40 - 120 Hz Variable Low Pass Filter Alignment Active 4th order 24dB/octave (6/12/18/24 dB user adjustable) Amplifier Power Output 650 watts Continuous. 1200 watts Peak Amplifier Classification D2AudioTM DSP controlled, Class-D amplifier system. High current switch mode power supply (SMPSU) Equalisation 4 Settings (Off/Music/Movie/Impact) Phase Control 0-90-180-270 degrees Auto Sensing Input Level Requirements Line Level > 2mV. Standby after 10 minutes if no signal sensed Digital Volume Level -60 to +10dB in 1dB increments Drive Unit Complement 1 x 15 C-CAM® sub-woofer driver featuring triple suspension 3 long throw voice coil 12V Trigger Input 3.5mm mono jack socket Connections Stereo RCA in/out LFE in/out 12V Trigger in (3.5mm mono jack) LEO* - 3.5mm Microphone input jack (microphone supplied) Input Impedance 20 K Ohms Dimensions (HxWxD) 430 x 400 x 400 mm (1615/16 x 153/4x 153/4 Inches) Grille Depth 28 mm (11/8 Inches) Weight (unpacked) 35.3kg (77lb 10oz) Mains Input Voltage 100 - 120 Vac / 220 - 240 Vac 50/60 Hz (Factory preset) Electrical Certifications CE/CB/ETL/Fcc/ErP (Energy saving compliant) Power Consumption Maximum 1000W. Standby Fuse Type 20mm UL/VDE (Value is region specific) IR Remote Control Code NEC SH6122  

Monitor Audio CLG140 Garden Speaker Features 4 MMPII bass-midrange driver Coaxially aligned 25mm C-CAM gold dome tweeter Optimised for high sensitivity and wide dispersion Internal matching transformer for 70/100V line level operation Designed to operate under extreme climatic conditions from -20 to 70 C Rigid, high impact cast polymer cabinet for long life and durability Bracket mounting made from die-cast aluminium alloy Garden spike provided although tree or pole mounting is possible with additional fixings Certified to IP55 rating Encapsulated cable runs inside bracket and spike for discreet appearance Dark Brown finish blends with garden colours, but enclosure is paintable to blend with alternative settings Applications include garden and deck areas: system expands with garden size PTC protection against power overload The CLG140 satellite is a robust high sensitivity design built to deliver richly detailed hi-fi quality mid/high frequencies. Engineered to withstand the most extreme temperatures and weather conditions, its rigid conical cast-polymer enclosure houses the companys signature 1 (25mm) C-CAM gold-dome tweeter co-axially aligned with a 4 MMP bass-mid driver. The horn-shaped housing provides excellent audio directivity in free air conditions when positioned close to the garden surface on a bracket/spike assembly, which neatly encapsulates and channels the connecting cable into the ground for a discreetly installed result. Alternatively its possible to mount the CLG140 on a tree, pole, wall or fence. Supplied in a durable dark brown finish for excellent coordination with garden colours, the CLG140s casing can be painted to blend with any environment. Specifications Frequency Response (-6dB) 100Hz 30KHz Sensitivity (1W@1m) 88dB Line Level Voltage 70/100 Maximum S.P.L 104 dBA Power Handling 40 watts (crossover set to minimum 100Hz@12dB/Octave) Amplifier Requirements (RMS) 10-40 watts per speaker Driver Complement 1 x 4 MMPII cone bass-mid driver 1 x 25mm C-CAM Gold Dome tweeter Coaxially oriented Crossover Recommendation (high pass) 100Hz at a minimum of 12dB/Octave (24dB/Octave optimum) External Dimensions, excluding spike/ mount (Diameter x D) 130 x 175mm (5 1/8 x 6 7/8 inches) Bracket Pivot Angle 32 in all directions Connection Encapsulated cable connection Environmental Protection Rating IP55 Finishes Available Brown Weight 2.08kgs (4lb 10oz) Dispersion 60

PCB MOUNT DC TO DC CONVERTER INPUT VOLTAGE FROM 18-36V; OUTPUT==15V & -15V POWER = 15WATTS

CJMCU-219 INA219 I2C Bi-directional Current / Power Monitor Sensor Module Description: CJMCU-219 module is a with I2C interface Bidirectional current / power monitor integrated circuit (IC), and further expand the energy-saving electronic products TI camp. INA219 with the industry's highest accuracy and smallest size, not only to monitor the voltage drop across a shunt resistor on the sensing shunt supply voltage, while also computing power. The device is available in a SOT23 package, providing a small digital current sensing servers, laptops, power supplies, battery management and automotive and telecommunications equipment, low-cost solutions. INA219 in the temperature range -40 ￢ﾄﾃ to + 85 ￢ﾄﾃ can achieve maximum precision error of 1%, the maximum offset is 100 uV. The high-precision products combine the advantages of 12-bit resolution, as much as possible to help customers reduce the pressure drop on the shunt resistor, thereby minimizing power loss and power consumption and save board space. The device can be sensed bus voltage range of 0 V to +26 V. Feature: Programmable calibration register can be read in units of ampere direct current, and read the power in watts. Up to 128 samples can be averaged to achieve filtering in noisy environments. I2C interface has a timeout setting, not only to prevent bus lock, but also provides high-speed mode, to meet the communication requirements of up to 3.4 MHz. All properties INA219 are software programmable to support. A single power supply, the operating voltage of between +3.0 to + 5.5V Package included: 1 x CJMCU-219 INA219 I2C Bi-directional Current / Power Monitor Sensor Module

  1 Amp Charger PCB Specifications  Input voltage 16VAC Output voltage 13,8VDC Current - 1A continuous - 1,8A peak Adjustable output voltage Physical size - 68mm x 44mm Application Charging 7AH backup battery 1A DC supply AC to DC converter 1A Technical Data Technical Bulletin PDF  

If you need only the CT, please check this: >>> Here Many buyers are response: Why test data is wrong? Voltage * Current = Power, But power is less than the actual test voltage * Current, Why is that? Answer: There are three types of power: Active Power (P represents / unit W) Reactive power (Q represents / unit Var) Apparent power (S represents / unit VA) Here that We only talk about Active Power, others please google it: P = U * I * cosφ, cosφ it represents the power factor, purely resistive load (Such as incandescent, heater, etc.) the power factor is generally close to 1,Between the inductive and capacitive load load power factor 0-1. So purely resistive load test time, P is substantially equal to or close to U * I. When Inductive or capacitive load test (Such as refrigerators, washing machines, televisions, computers, etc.) P U*I, As for how much to keep the power factor related to the specific, Different for each appliance power factor. Note: 1. This module is suitable for indoor, not outdoor use. 2. applied load can not exceed the rated power. 3. The wiring order can not be wrong. Specification: Apply to power grid voltage range: 110V-220V Working voltage: 80 ~ 260VAC Test voltage: 80 ~ 260VAC Rated power: 100A / 22000W Working Frequency: 45-65Hz Measurement accuracy: 1.0 (Error 1%) Dimensions of LED display screen: 51 x 30mm Feature: Network voltage direct power supply, no external power supply, measurement precision, large-screen LCD liquid crystal screen display clearly. A. Function 1. electrical parameter measurement function (voltage, current, active power, power). 2. overload alarm function (over power alarm threshold, the backlight and power flicker tips). 3. The power alarm threshold preset function (can set up their own power alarm threshold). The power button clear function. 5. Power-down data storage function. 6. Large-screen LCD screen full display function (display voltage, current, active power, power). 7. Backlight. B. Display and key Display Interface Display voltage, current, power, energy parameters from the large-screen LCD screen simultaneously. Display Format 1. Power: measurement range 0 ~ 22kW 1kW display format within 0.0 ~ 999.9W; From 1kW display format 1000 ~ 9999W; 10kW above the display format 10.0 ~ 22.0kW. 2. Power: measurement range 0 ~ 9999kWh 10kWh within the display format 0 ~ 9999Wh; Above 10kWh display format 10 ~ 9999kWh; 3. Voltage: Test Range 80 ~ 260V Display Format 80 ~ 220V 4. Current: Test Range 0 ~ 100A Display Format 0.00 ~ 99.99A. Package included: 1 x 100A Power Monitor Module AC Meter Panel 1 x CT,,,,

Description: DM55-1 LCD AC Digital Voltage Meter Voltmeter Monitor Backlight AC100-300V Switch Features: For measuring the ac voltage by connecting to the switch plug directly or the other kind of switch plug. Suitable for measuring the AC voltage in many place, such as office, factory, laboratory, household and so on. Application: The product can show the voltage of power by connecting to the plug of AC 110V/220V. It is important for you to let the children away from the product. Don’t use the product in a damp environment. Specification: Measuring accuracy: ±1.5%, ±2 word Measuring range: AC 100-300V Consume power: ≤1W (about every 1200 hours consume 1 kilowatt-hour) Package includeds: 1 x LCD AC Digital Voltage meter Details pictures:

Features: Suitable range: For nominal voltage 3.6V 3.7V lithium battery(Including 18650,26650, lithium polymer batteries) Product Size: 64mmx20mmx3.4mm Material:Metal Charging voltage: 12.6V Maximum output current: 20A Maximum output power / charging power: 252W Note: 1. Strictly according to the diagram wiring: 0V/4.2V/8.4V/12.6V,Otherwise it will cause damage to the chip. 2. After connection,it need to first charge activation, then will have the output. 3. Do not mix the good battery and poor battery to use.The internal resistance of 3 battery capacity are closer will be better.Please buyers know the     professional knowledge of this module before buying Package Included: 10 x PCB Protection Board  

Features: Suitable range: For nominal voltage 3.6V 3.7V lithium battery(Including 18650,26650, lithium polymer batteries) Product Size: 64mmx20mmx3.4mm Material:Metal Charging voltage: 12.6V Maximum output current: 20A Maximum output power / charging power: 252W Note: 1. Strictly according to the diagram wiring: 0V/4.2V/8.4V/12.6V,Otherwise it will cause damage to the chip. 2. After connection,it need to first charge activation, then will have the output. 3. Do not mix the good battery and poor battery to use.The internal resistance of 3 battery capacity are closer will be better.Please buyers know the professional knowledge of this module before buying Package Included: 3 x PCB Protection Board

Features: Suitable range: For nominal voltage 3.6V 3.7V lithium battery(Including 18650,26650, lithium polymer batteries) Product Size: 64mmx20mmx3.4mm Material:Metal Charging voltage: 12.6V Maximum output current: 20A Maximum output power / charging power: 252W Note: 1. Strictly according to the diagram wiring: 0V/4.2V/8.4V/12.6V,Otherwise it will cause damage to the chip. 2. After connection,it need to first charge activation, then will have the output. 3. Do not mix the good battery and poor battery to use.The internal resistance of 3 battery capacity are closer will be better.Please buyers know the professional knowledge of this module before buying Package Included: 1 x PCB Protection Board

Features: 1. Electrical parameter measurement function (voltage, current, active power, energy, frequency, power factor) 2. Overload alarm function (over power alarm threshold, backlight and power flashing to alarm). 3. Power alarm threshold preset function (can set power alarm threshold). 4. The energy can be reset use the key. 5. Store data when power off. 6. Large-screen LCD 7. Backlight function. 8. Key Function Backlight control Short press the key to turn on or off the backlight, the backlight has memory function, it can store the on or off state when power off. Reset energy Step1: Long press the key for 5 seconds until the energy value flash, then release the key. Step2: Short press the key again, then the energy value is cleared and exit the reset flashing state. Step3: If there is no operation on the key within 5 seconds, it means the energy value is not cleared and will exit the reset state. Set power alarm threshold Step1: Long press the key until the LCD screen display “SET CLr”, then release the key to enter the setting state Step2: Power window display the current power alarm value and the last digit begin to flash, then you can short press to plus 1, when there is no operating over 3 seconds, it will switch the digit position automatically, the setting method is as same as the above. Step3: After finish the setting, long press the key over 5 seconds will store automatically and exit, the range of active power threshold is 0.0~2.5kW. it can display six parameters at the same time. Specifications: 1. Working voltage: 80 ~ 260VAC 2. Test voltage: 80 ~ 260VAC 3. Rated power: 100A/22000W 4. Operating frequency: 45-65Hz 5. Measurement accuracy: 1.0 grade Display format: 1.Power: test range: 0~22000W, Starting measure power: 0.2W ≥10000W display format: 10.0~22.0kW 2.Energy: test range: 0~999kWh ≥10kWh display format: 10~999kWh 3.Voltage: test range: 80~260V Display format: 80~260V 4.Current: test range: 0~100A,Starting measure current: 0.001A 10A display format:0.000~9.000A ≥10A display format:10.00~99.99A 5.Frequency: test range: 45~65Hz Display format: 45~65Hz 6.Power factor: test range: 0~1PF Display format: 0.00~1.00PF Precautions: 1. This module is suitable for indoor, please do not use outdoor. 2. Applied load should not exceed the rated power. 3. Wiring order can’t be wrong. Package Included: 1 x Closed Transformer Power Monitor Detail Pictures:

FAST AFFORDABLE COURIER SHIPPING TO SOUTH AFRICA Electric Parameters: Module size: 12 x 19mm Module weight: 0.5g Operate frequency: 2.4GHz ~ 2.525GHz Supply voltage: 1.8 ~ 3.6V DC Measured distance: 120m Air rate: 250k ~ 2Mbps Communication Interface:SPI Receiving current:12.6mA Sending current: 16mA@20dBm Receiving length: Each data packet 1-32 byte Receiving sensitivity: -94dBm@250kbps Feature: AS01-ML01S is a 1mW, industrial-grade wireless transceiver integrated data transmission module with high-speed (maximum air speed is up to 2Mbps) and high stability working in 2.4GHz frequency. The module comes with high-performance PCB antenna, accurate impedance matching, using NORDIC original nRF24L01P RF chip, working in the 2.4GHz ~ 2.5GHz ISM band. The module has enough transmitting power, good spectrum characteristics, small harmonics, small crosstalk, small size. Package Included: 1 x Wireless Module 2.4GHz nRF24L01P RF Wireless Module For Networking With PCB Antenna SMD Transmitter And Receiver 2.4GHz nRF24L01P RF Wireless Module For Networking With PCB Antenna SMD Transmitter And Receiver 2.4GHz nRF24L01P RF Wireless Module For Networking With PCB Antenna SMD Transmitter And Receiver

Standard 3D Printer 3MM MK3 Aluminum Board PCB Heat Bed For Reprap Specifications: 1 layer 35μm copper Voltage: 12/24V Resistance: 1.4-1.6 Ohm at 12V 5.0-5.4 Ohm at 24V Max. Temp: 180° C Heating Time: 24V reaches 100° C in 2 minutes Dimensions: 215 x 215 x 3mm Weight: 363g Colour: Black with White Mask/Text MK3 can choose 12 v and 24 v two voltage, 12 V: one line thread cross 1, another cross 2, 3 24 V: one line thread cross 2, another cross 3 (1 don't need to pick up). The new circuit, whether meet the 12 v or 24 v, the power is stable. Package included: 1 x Printer Heatbed