5v Relay Trigger circuit 8 channel Relay driver circuit with ULN2803 in Hindi

In this video I will show you how to make a optically isolated 8 channel 5 volt relay module by using minimum electronic components, I would make a low cost relay module which will be efficient as ready made relay modules available in market.

Watch this video till the end, in next part of this video I will make this relay module to be controlled by Arduino.

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Required components:

1. 5 Volt Relay x 8
2. PC817 IC (Optocoupler IC) x 8
3. LED (any colour) x 8
4. Resistors 220 Ohm x 8
5. PCB

Видео 5v Relay Trigger circuit 8 channel Relay driver circuit with ULN2803 in Hindi канала Debajyoti's Lab