List of device:
Optical coupling relay (for example, 4N25 model)
Control circuit (for example, microcontroller or signal generator)
High -power load (for example, motor, bulb, etc.)
power supply
Resistance and connection lines.
step:
Connect the optocoupler's optical transmitter side:
Connect the pins of the optical coupling relay (usually pins 1) to the output pin of the control circuit.In this example, we assume that the control circuit is a microcontroller, and its output pin is responsible for controlling the switch status of relay.
Connect the optocoupler's optical receiver end:
The optical receiver pins (usually pins 2) of the optocoupler relay are connected to a high -power load control circuit.This circuit can be the control circuit of the motor, the power of the bulb.
Connect high -power load:
Connect high -power loads (such as motors or bulbs) to the control circuit of the optical receiver side of the optocoupler relay.In this way, when the optocoupler relay receives the optical signal from the optical transmitter, it will turn on or off the control circuit to control the state of high power load.
Power connection:
Provide the required power supply for optocoupler relay and control circuit.Make sure the power supply voltage and power meet the specifications of optocoupler relay.
Set the control signal:
Use a microcontroller or a signal generator to generate an appropriate control signal to control the switch status of the optocoupler relay.For example, the output pins of the microcontroller are set to high levels or low levels to control the switch status of the optocoupler relay.
Test and verification:
Make sure that the connection is correct, test and verify.When the control signal changes, the state of the high -power load changes.When the light signal of the optical transmitter changes, the high -power load at the light receiver side should be turned on or closed accordingly.
