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Article #9143Re: 12V car --> 3V cd player
From: Michael A. Covington
Date: Thu, 27 Dec 1990 21:43
Date: Thu, 27 Dec 1990 21:43
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Well done. One can add that... (1) There is no such thing as a 7803. The circuit with the LM317 looks good. Another alternative would be to use a 7805 followed by a series of diodes, each introducing about 0.6V additional drop. (2) The 317 does not absolutely require a capacitor across the output, but putting one there will help to reduce noise. (3) If you're worried about meltdown, put a fuse upstream from the 317.
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Path: arc1-ca.pugleaf.net!utzoo!censor!geac!torsqnt!news-server.csri.toronto.edu!cs.utexas.edu!wuarchive!emory!athena.cs.uga.edu!mcovingt From: mcovingt@athena.cs.uga.edu (Michael A. Covington) Newsgroups: sci.electronics Subject: Re: 12V car --> 3V cd player Message-ID: <1990Dec27.214353.10618@athena.cs.uga.edu> Date: 27 Dec 90 21:43:53 GMT References: <41842@ut-emx.uucp> <1990Dec27.141809.2856@phri.nyu.edu> <1739@sun13.scri.fsu.edu> Organization: University of Georgia, Athens Lines: 12