This module allows microcontrollers to safely control high-voltage devices using a relay with optocoupler isolation. It supports both HIGH and LOW level triggering, selectable via jumper,
In this pinout diagram of PC817, pin1 and pin2 are parts of the input side and pin3 – pin4 are output pins. Pin 1 is an anode pin of IR input within the Optocoupler. It will give the logical input signal to the
In this tutorial, we have made two types of circuits. The first circuit will drive the relay through an optocoupler in the same circuit with the same power supply. Whereas the second circuit is
High-quality Songle relay featuring a single pole double throw (SPDT) configuration, with one common terminal, one normally open terminal, and one normally closed terminal. Activated by a low-level
This schematic was created from tracing out the circuitry of the 12 V version of the module, but it is probably applicable to the other voltage versions of the same module (e.g. the 5V
Complete PC817 optocoupler isolation module guide. Covers 3.6V–30V wiring, jumper settings, resistor selection, Arduino/ESP32/PLC hookup & troubleshooting.
Learn how to use the 5V 30A 1- Channel Relay Module With Optocoupler High/Low Level Trigger with detailed documentation, including pinouts, usage guides, and example projects.
for Use of Industrial 4-Channel Relay Module Introduction This industrial 4-channel relay module allows you to control your e. ectrical equipment only through one computer serial port. It supports DC7-30V
The circuit below is identical to the dual channel except that the power for the relay JD-VCC and power to the opto-isolator VCC are separated by a link. When the link is removed a separate power supply
We will learn three methods, first method is by connecting relay directly with the optocoupler output pins, second method is by using external PNP transistors, and third method is by
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