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Article #3868Re: How to save your car's electrical stuff?
From: Mike Bernstein
Date: Tue, 28 Nov 1989 15:03
Date: Tue, 28 Nov 1989 15:03
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Please excuse my lack of a diagram but if you want to buld a circuit to blow a high current fuse at a specific overvoltage it will work a lot better to use an SCR triggered by the zener. A very small SCR can blow a 30 amp fuse. You wil need a very big Zener, as overvoltage problems will tend to creep up on you and melt the zener. Also a 15V zener is too low. Keeping tolerances and temperature variations in mind a threshold of at least 17 volts is required. I can't draw the circuit but I will email a futurenet DASH4 file of it to anyone interested.
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arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!ucsd!swrinde!cs.utexas.edu!uunet!snorkelwacker!apple!bridge2!3comvax!cygnet!mbernsReferences:
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!ucsd!swrinde!cs.utexas.edu!uunet!snorkelwacker!apple!bridge2!3comvax!cygnet!mberns From: mberns@cygnet.UUCP (Mike Bernstein) Newsgroups: sci.electronics Subject: Re: How to save your car's electrical stuff? Message-ID: <1724@cygnet.UUCP> Date: 28 Nov 89 15:03:13 GMT References: <6709@merlin.usc.edu> Reply-To: mberns@cygnet.UUCP (Mike Bernstein) Distribution: usa Organization: Cygnet Systems -- Sunnyvale, California Lines: 9