Power Driver

This  is a power-saving pulse-width modulator (PWM) controller for solenoids with an internal supply regulator. The board is based on the DRV110 IC which is a PWM current controller which is specifically designed for solenoid and relay applications. The project regulates the current with a well-controlled waveform to reduce power dissipation on the load. The solenoid current is ramped up fast to ensure the opening of the valve or relay. After initial ramping, the solenoid current is kept at a peak value to ensure correct operation, after which the current is reduced to a lower hold level to avoid thermal problems and reduce power dissipation.

This  is an  I2C  electronic load, intended for testing power supplies, solar panels, batteries, and supercapacitors. The board consists of an I2C interface DAC  MCP4725, OPAMP U2 acts as V to I (Voltage to Current), OPAMP U3 measures the load current across the shunt resistor and provides  0 to 4.9V  Voltage with a current range of  0 to 1A. Users may control the battery discharge current using the MCP4725 DAC in the range  0 to 1A. The circuit also provides load current feedback and voltage feedback. This way it can help users to measure the battery’s performance. Suppose the user desires to measure the battery’s performance as it is being discharged at constant power. In that case, a current measuring circuit can be used in the feedback loop to enforce the constant power constraint. This enables you to discharge a battery at a controlled way. The project can handle  1A @ 24V, thus a total of  24W  with the use of a large-size heatsink and fan. The circuit works with 5V DC voltage input. The project can be used with Arduino, ESP32, or other microcontroller.

This project is a Half Bridge with Inbuilt Oscillator utilizing the NCP1392B MOSFET driver and IRF540 MOSFETs for half-bridge topology applications. It allows for adjustable operating frequency from 25 kHz to 100 kHz with a trimmer potentiometer.

This project is a synchronous boost converter based on the LM5122 IC. It converts a 12V input to a 24V output capable of delivering up to 2A. It features high-current connectors and a power indicator LED.

This is a compact Switch-Mode Power Supply (SMPS) using the TNY266 chip for cost-effective solutions like power adapters and LED drivers. It includes a rectifier, TNY266 switch, and PC817 optocoupler feedback. It requires no auxiliary power.