Single Channel Relay Board Circuit Diagram

Here to turn on the relay with arduino we just need to make that arduino pin high a0 in our case where relay module is connected.

Single channel relay board circuit diagram. Relay and relay circuits schematic circuit diagram. Circuit diagram and working. For multiple channel like 2 or more. Lamp burning when phone calls moc3020 bt137 schematic circuit diagram.

I have used a two channel relay module in this project. Pic16f628a 8 channel 24 amperes triaced card schematic circuit diagram. Below given is relay driver circuit to build your own relay module. 4 if the relay should switch ac loads the use of an opt isolator is recommended to separate the control circuit from the switching circuit relay.

It disconnects the circuit when the relay is inactive. The relay function can be better understood by explaining the following diagram given below. It closes the circuit when the relay is activated. They are designed to act as two spdt relays which are actuated by a single coil.

The above diagram is for relay triggering circuit. It is basically two relays with all the circuitry on a single board. Now we need to test the circuit diagram of the relay module on a breadboard. I made a single channel but you can make more on a same pcb.

The detail instruction code wiring diagram video tutorial line by line code explanation are provided to help you quickly get started with arduino. In this 4 channel relay driver circuit we have used an optocoupler whic his triggered by active low signal to trigger the npn transistor which further drives the relay. For switching we are using a transistor as a switching device. Are you looking for making a relay board yourself.

Since the relay has 12v trigger voltage we have used a 12v dc supply to one end of the coil and the other end to ground through a switch. Relays are used where it is necessary to control a circuit by an independent low power signal. Also the electrical paths for the ac lines on the relay module should be wide enough min 3mm as short as possible separated from any other path on the pcb and not too close to each other. Learn how to use relay with arduino how relay works how to connect relay to arduino how to code for relay how to program arduino step by step.

Here we have used 12v 10amp relay in this pcb board but you can also use 5v relays. You can also notice a diode connected across the coil of the relay this diode is called the. A relay module is a simple circuit board that consists of the relay itself and all the necessary components that are required to drive a relay and also the required connectors to connect the load. At the same time you can use this relay module like a ordinary relay module.

In this arduino relay control circuit we have used arduino to control the relay via a bc547 transistor.