How To Make 4 Relay Circuit

How To Make 4 Relay Circuit | ElectroMech Lab

Relays are used to control high voltage loads, a signal of 5vdc can control a 230V load, with the help of relay circuit.

In this video I am showing 4 relays circuit assembled on general purpose PCB.

Compoenent:

General Purpose PCB: 1 No.

12vdc relay : 4Nos.

UF4007: 4 Nos.

NPN Transistor : 4 Nos.

LED 3mm Red: 5.

Resistors 15 KOhm: 4 Nos.

Resistors 10 KOhm: 4 Nos.

Connectors.

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