View single post by Si.
 Posted: Sat Sep 8th, 2018 10:42 pm
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Si.



Joined: Thu Feb 23rd, 2012
Location: London
Posts: 5213
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        Well ...  L:

... for anyone not wishing to waste a   SINGLE ELECTRON   of power !  :shocked:



I found this pretty  C :cool: :cool: L  and 'fairly simple' circuit.  :)





When a 'Reverse Polarity' power-source is connected ...  :shocked:

... 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...  :bg:

... & there is NO VOLTAGE DROP whatsoever from using the circuit !!  :thumb:



Simples !  :dope:



:java::brill: 



Si.




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