flippityflop Posted January 1, 2015 Report Share Posted January 1, 2015 i need a circuit design that closes a secondary circuit, when power is cut from a primary circuit (@ typically 6V). i don't need extremely fast switching. this isn't also going to be a backup power supply (so the secondary circuit WILL NOT be providing a continuous power to the primary). so needless to say, what i need is very simple. Quote Link to comment Share on other sites More sharing options...
Hero999 Posted January 1, 2015 Report Share Posted January 1, 2015 A normally closed relay.https://www.google.co.uk/search?q=normally+closed+relay&ie=utf-8&oe=utf-8&gws_rd=cr&ei=uHWlVKf_E4jjaoSwgaAN Quote Link to comment Share on other sites More sharing options...
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