modified 3 years ago

Turn on a relay through transistor

01:21:50

Turn on a relay through a transistor 

published 5 years ago

sesquialtera

5 years ago

Best protect your transistor from back emf from the relay coil otherwise the transistor will have a short life. Put a diode in parallel with the coil.

Richardc

5 years ago

@firdaus34 as sesquialtera suggests you should add a flywheel diode to protect against back emf. A version of your circuit demonstrating the importance of this can be found here: http://everycircuit.com/circuit/5464332206604288

firdaus34

4 years ago

Thanks guys

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