Tuesday 23 October 2012

Relay circuit

This is relay circuit, which is operate as switching circuit. This relay will operate when signal point of transistor which connected to PIC16877A and get a supply and also a signal to switch ON the relay, the relay will give a signal to operate a motor as we program it.



Above is a Relay circuit layout. This layout must be print at PCB paper, then iron it to PCB board before we etching by using acid liquid

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