Transistor to drive relay

156

02:09:56

NPN transistor (darlington) to drive relay to handle large current. Use push button to activate.  Typical usage might be a gpio or small input signal which will drive a relay, in this example a 12v relay to close such that a much larger voltage and current can freely flow
The resistor and diode on the relay are optional to protect the transistors.. They may be eliminated depending on your application

published 11 years ago

UncleRick

11 years ago

Nice. Clean layout.

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