Under/Over Voltage and Current Protection Switch – High Current
https://www.electronics-lab.com/project/under-over-voltage-and-current-protection-switch-high-current/
LTC6102 Protection: UV/OV/UC/OC switch for loads up to 30A/48V. Arduino-ready for V/I sensing via ADC.
Simple SMPS, 85-265VAC Input with Output 12VDC @ 750mA
https://www.electronics-lab.com/project/simple-smps-85-265vac-input-with-output-12vdc-750ma/
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.
Under/Over Voltage and Current Protection Switch
https://www.electronics-lab.com/project/under-over-voltage-and-current-protection-switch/
This simple project allows users to design an under-voltage, over-voltage, under-current, and over-current protection switch. It is a highly useful system for safeguarding electrical loads against abnormal power or current conditions. The project features a relay with optocoupler input, a current-sensing circuit based on the INA195 amplifier, a 10mΩ shunt resistor, and a voltage divider […]
Isolated Analog Control with Potentiometer
https://www.electronics-lab.com/project/isolated-analog-control-with-potentiometer/
This module is an Isolated Potentiometer featuring an LOC110 linear optocoupler (with 3750V isolation) and an isolated DC-DC converter, operating from a single 5V supply. It provides a 0−3.3V isolated analog output from the onboard 10K pot for industrial control and automation.
4 Channel Optically isolated board with DC-DC converter
https://www.electronics-lab.com/project/4-channel-optically-isolated-board-with-dc-dc-converter/
This 4-channel optocoupler module uses PC817 chips and a DC-DC converter for electrical isolation. Both high and low-voltage sides have configurable input/output settings.
DC Motor Controller using Relay and MOSFET – Arduino Interface
https://www.electronics-lab.com/project/dc-motor-controller-using-relay-and-mosfet-arduino-interface/
The project presented here is a low-cost solution to control high power brushed DC motor speed and direction. Traditional DC motor controllers are based on solid-state circuitry known as H-Bridge. Here we have made an H-bridge configuration using high current 2 x relays which can handle high voltage as well as high current. Additional MOSFETs […]
4 Channel Opto-Isolated Module Using High Speed 6N137 Optocoupler
https://www.electronics-lab.com/project/4-channel-opto-isolated-module-using-high-speed-6n137-optocoupler/
4 Channel Opto isolated board has been designed around 6N137 Opto-coupler, the 6N137 optocoupler is designed for use in high-speed digital interfacing applications that require high-voltage isolation between the input and output. Applications include line receivers, microprocessors or computer interface, digital programming of floating power supplies, motors, and other control systems. The 6N137 high-speed optocoupler […]