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.
Isolated Potentiometer and Switch Module using LOC110
https://www.electronics-lab.com/project/isolated-potentiometer-and-switch-module-using-loc110/
This Isolated Potentiometer Module provides isolated analog (0−3.3V from a 10K pot) and isolated switch inputs (via PC817 optocouplers) for industrial use. It uses a LOC110 linear optocoupler (3750V isolation) and an isolated DC-DC converter for a single 5V supply.
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.
RC Radio Controlled Switch with Relay
https://www.electronics-lab.com/project/rc-radio-controlled-switch-with-relay/
This RC Relay project enables control of large current devices using a Radio Control (RC) System. This RC switch converts hobby radio control (RC) pulses to control the on/off state of the Relay. On board LED indicates the output. The board is Arduino compatible and the example code can be modified as per user requirements. […]
High Power DC Motor Speed and Direction Control using RC Transmitter – Arduino Compatible
https://www.electronics-lab.com/project/high-power-dc-motor-speed-and-direction-control-using-rc-transmitter-arduino-compatible/
The project presented here is a low-cost solution to control the speed and direction of a high-power brushed DC motor using RC (Radio Remote Control) transmitter. This is an Arduino-compatible board, consisting of an Atmega328 chip, 2 x Relay for motor direction control, MOSFET for speed control using PWM input, Tactile switch, Slide switch, and […]