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Article #2271Re: Source of ripple in simple PS circuit?
From: Michael A. Terrell
Date: Wed, 21 May 2003 12:09
Date: Wed, 21 May 2003 12:09
27 lines
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2762 bytes
DaveC wrote: > > On Tue, 20 May 2003 20:37:06 -0700, Dave M. wrote > (in message <CvCya.8581$3e4.3669@news01.roc.ny.frontiernet.net>): > > > We must have forgotten to tell him to measure the junction drop in the > > bridge rectifiers. > > Measured after the fact (after replacing the bridge and seeing the > improvement), I found that one of the diodes hade a 1.7v drop across it. Then > it failed completely while I was testing it. > > It's a good feeling to succeed in such a diagnosis and repair (without too > much "shotgun parts replacment"). > -- > Dave C > dave+usenet3016@mailblocks.net I agree. Shotgunning is a trait of poor technical skills. On the other hand if you routinely service something with a known high failure rate of certain parts and replace that small group of parts in every unit, it should be part of preventative maintenance. -- Michael A. Terrell Central Florida
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X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 112d1e,80288951613ef33a X-Google-Attributes: gid112d1e,public X-Google-Thread: 1131b0,80288951613ef33a X-Google-Attributes: gid1131b0,public X-Google-Thread: 10d137,80288951613ef33a X-Google-Attributes: gid10d137,public X-Google-Thread: 103407,80288951613ef33a X-Google-Attributes: gid103407,public X-Google-ArrivalTime: 2003-05-21 05:28:06 PST Path: arc1-ca.pugleaf.net!archiver1.google.com!news1.google.com!sn-xit-02!sn-xit-06!sn-xit-09!supernews.com!newsfeed.news2me.com!newsfeed2.earthlink.net!newsfeed.earthlink.net!stamper.news.pas.earthlink.net!newsread2.prod.itd.earthlink.net.POSTED!not-for-mail Message-ID: <3ECB6C38.66E20A13@earthlink.net> From: "Michael A. Terrell" <mike.terrell@earthlink.net> Organization: Resistors to the left, Capacitors to the right, and no talking! X-Mailer: Mozilla 4.78 [en]C-CCK-MCD (Win98; U) X-Accept-Language: en MIME-Version: 1.0 Newsgroups: sci.electronics.design,alt.engineering.electrical,aus.electronics,sci.electronics.repair Subject: Re: Source of ripple in simple PS circuit? References: <0001HW.BAEDC6B30001868DF0386600@news.cis.dfn.de> <3R3ya.2176$OB5.464467@news4.srv.hcvlny.cv.net> <0001HW.BAEE339B0002EF2BF0386600@news.cis.dfn.de> <Ybhya.288$e_3.7@news02.roc.ny.frontiernet.net> <0001HW.BAEF0876000FF444F0386600@news.cis.dfn.de> <3EC9FD41.7CF5E71B@earthlink.net> <CvCya.8581$3e4.3669@news01.roc.ny.frontiernet.net> <0001HW.BAF061E30009AEA9F0386600@news.cis.dfn.de> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Lines: 27 Date: Wed, 21 May 2003 12:09:39 GMT NNTP-Posting-Host: 165.247.64.130 X-Complaints-To: abuse@earthlink.net X-Trace: newsread2.prod.itd.earthlink.net 1053518979 165.247.64.130 (Wed, 21 May 2003 05:09:39 PDT) NNTP-Posting-Date: Wed, 21 May 2003 05:09:39 PDT