- Joined Mar 2, 2013
Can anyone tell me if this will work please? Basically I need the relay to de-energise in the event of a short circuit or and overcurrent event which will then switch an LED and / or a buzzer (not shown). As I understand it the LM317 will attempt to maintain a voltage of 1.25V between the output and the ADJ terminals and in the event of a short between the GND and output or anything else that causes excess current this voltage will drop but I'm not 100% sure on that. I've also added a zener in series with the relay coil of the same voltage with the intention de-energising said relay when the voltage from the output drops. Does this look right?
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