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Article #15006Re: Toggle FF (Switch)
From: Thomas Schaerer
Date: Tue, 15 Dec 1992 07:47
Date: Tue, 15 Dec 1992 07:47
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Hubey (hubey@pilot.njin.net) wrote: : I need a toggle-flip-flop that works at 9V so that I can : use it in conjunction with a momentary-contact switch to : turn my alarm system on and off. Where is the problem? You must create a bounce-free-impulskey and control with it a follow D-flip-flop designed as toggle-ff by feedback of /Q-output to D-Input. Because the circuit has to work with 9 vdc, you must take cmos-components of the family CD4xxxx (NATIONAL SEMIC.) or MC14xxxx (MOTOROLA). For D-ff take the dual type-d -flip-flop MC1413B or CD14013B. To build a bouncefree impulse- circuit there are many ways with rs-flip-flop and a on-on-key or a monoflop with a on-off-key. More questions, send these to my e-mailbox. Bye Thomas
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<1992Dec15.074742.14105@bernina.ethz.ch>Path:
arc1-ca.pugleaf.net!sparky!uunet!haven.umd.edu!darwin.sura.net!spool.mu.edu!yale.edu!ira.uka.de!chx400!bernina!schaererReferences:
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Newsgroups: sci.electronics Path: arc1-ca.pugleaf.net!sparky!uunet!haven.umd.edu!darwin.sura.net!spool.mu.edu!yale.edu!ira.uka.de!chx400!bernina!schaerer From: schaerer@isi.ethz.ch (Thomas Schaerer) Subject: Re: Toggle FF (Switch) Message-ID: <1992Dec15.074742.14105@bernina.ethz.ch> Sender: news@bernina.ethz.ch (USENET News System) Organization: Swiss Federal Institute of Technology (ETH), Zurich, CH X-Newsreader: TIN [version 1.1 PL8] References: <Dec.14.18.42.17.1992.18096@pilot.njin.net> Date: Tue, 15 Dec 1992 07:47:42 GMT Lines: 18