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'] Detecting a blown lamp'
2005\12\14@112316 by Wouter van Ooijen

face picon face
> I'm making a little PIC-controlled floodlight interface for my house,
> and I'd like the PIC to be able to detect if the lamp filament is
> working.

anything wrong with an LDR or a fototransistor?

Wouter van Ooijen

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2005\12\14@114108 by Michael Rigby-Jones

picon face


{Quote hidden}

A simple current transformer would be one of the safer methods, with total isolation from 240v.  The output of the transformer would need to be rectified and the voltage level suitably clamped for the PICs inputs.

Regards

Mike

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