|View single post by Si.|
|Posted: Sat Sep 8th, 2018 10:42 pm||
| Well ...
... for anyone not wishing to waste a SINGLE ELECTRON of power !
I found this pretty C L and 'fairly simple' circuit.
When a 'Reverse Polarity' power-source is connected ...
... the relay-coil operates switch-contacts 'S1' ...
... cuts power to the Vout load ...
... & lights up the 'D3' red L.E.D to indicate 'Reverse Polarity' has been applied.
Power is only consumed when a 'Reverse Polarity' source is applied !
Normal 'Correct Polarity' operation consumes ZERO power...
... & there is NO VOLTAGE DROP whatsoever from using the circuit !!
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