2 Channel Relay Board Circuit Diagram
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Arduino 2 channel relay.
2 channel relay board circuit diagram. 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. 8 channel 5v optical isolated relay module this is a low level 5v 8 channel relay interface board and each channel needs a 15 20ma driver current. I have used a two channel relay module in this project. This instructable is for connecting your arduino to a 2 channel relay module and using your sketch to control the switches i bought the 2 relay module on ebay for 9 50 to drive a couple of 240v parts a vacuum cleaner and a rotary engraving tool.
It is basically two relays with all the circuitry on a single board. 2 channel 5v 10a relay module pin connectors breadboard usb cable 1. Vcc and com pin is connected to the 5v power supply gnd pin is connected to the gnd in1 and in2 pins are connected to the digital i o pin. Relay will turn on when this input goes below about 2 0v.
Vcc connect 5v to this pin. It is equiped with high current relays that work under ac250v 10a or dc30v 10a. It can be used to control various appliances and equipment with large current. In2 controls relay 2 active low.
2 channel relay driver project can be controlled by feeding 2 12v trigger voltage very useful project for application like micro controller based projects remote controller lamp on off and any circuits which required isolated high current and high voltage switching by applying any ttl or cmos level voltage. This project is a 2 channel relay board. This is a low level 5v 2 channel relay interface board and each channel needs a 15 20ma driver current. Connect the components based on the figure shown in the wiring diagram using pin connectors.
In this configuration the relay is always closed and remains closed until you send a signal from the arduino to the relay module to open the circuit. A normally closed configuration is used when you want to turn off the relay by default. 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. This project is a 2 channel relay board.
Is used to power the opto couplers. It is equipped with high current relays that work under ac250v 10a or dc30v 10a. This is the pin you should connect to the signal mains electricity in our case you are planning to switch. Here we have used 12v 10amp relay in this pcb board but you can also use 5v relays.
There is a second 1 3 2 54mm pitch pin header for supplying the relay side of the board with 5v.
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