Article View: sci.electronics.design
Article #1630Re: Understanding a split-mode power supply.
From: Sylvia Else
Date: Tue, 06 Jan 2009 21:46
Date: Tue, 06 Jan 2009 21:46
50 lines
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3204 bytes
Phil Allison wrote: > "Stupider than Anyone Else" > >> Phil was only on about the voltage rating issue. > > ** Massively wrong presumption. Phil, it's a matter of record. Just go back and look. > > >> It's credible, given that there was no sign of distress, but it's odd that >> Q1 was taken out as well. I still can't see a mechanism for that, which is >> why I was somewhat surprised that the repair worked. > > > ** Ignorance is neither a virtue nor ever a basis to argue from. You could try construing the point as being an invitation to explain how a failure of the resistor could take out Q1, or vice versa. >> Well, you wouldn't if they've been correctly specified. Phil was >> essentially arguing that I could substitute a component with a lower >> voltage rating. > > > ** Massively wrong presumption. Another matter of record, Phil. I note you've snipped out the stuff about the data sheet that directly contradicts your claim that the potential across the fused resistor could be several thousand volts. > > BTW: > > You came here for the advice of folk with experience of electronics, cos > you have absolutely none. I come here for comment, to help drive my thinking about a problem. Like any other reader of NGs, I'd be foolish to accept anything said here as gospel, because I have no way of judging the motives of other posters. > > The advice I gave is based on many decades of ACTUAL experience. So you say, but how am I to know? Sylvia.
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X-Google-Thread: 1131b0,3f5de0c6e381c3d6 X-Google-Thread: 103407,3f5de0c6e381c3d6 X-Google-Attributes: gid1131b0,gid103407,domainid0,public,usenet X-Google-Language: ENGLISH,ASCII-7-bit Path: arc1-ca.pugleaf.net!g2news1.google.com!news1.google.com!border1.nntp.dca.giganews.com!border2.nntp.dca.giganews.com!nntp.giganews.com!news1.optus.net.au!optus!newsfeeder.syd.optusnet.com.au!news.optusnet.com.au!not-for-mail Date: Wed, 07 Jan 2009 08:46:03 +1100 From: Sylvia Else <sylvia@not.at.this.address> User-Agent: Thunderbird 2.0.0.19 (Windows/20081209) MIME-Version: 1.0 Newsgroups: sci.electronics.design,sci.electronics.repair,aus.electronics Subject: Re: Understanding a split-mode power supply. References: <49601fcc$0$26314$afc38c87@news.optusnet.com.au> <4961f0fa$0$25649$afc38c87@news.optusnet.com.au> <QEy8l.15$zt5.5@newsfe22.ams2> <4962bdbe$0$26849$afc38c87@news.optusnet.com.au> <6sftbtF5pbpbU1@mid.individual.net> <4962c30a$0$26314$afc38c87@news.optusnet.com.au> <6sful1F5prdhU1@mid.individual.net> <4962cdab$0$2602$afc38c87@news.optusnet.com.au> <6sg2l6F5rsbqU1@mid.individual.net> <4962ed5b$0$25649$afc38c87@news.optusnet.com.au> <6sgal5F5rhbdU1@mid.individual.net> <49630537$0$4046$afc38c87@news.optusnet.com.au> <PkG8l.8721$t64.5274@newsfe17.ams2> <496343d1$0$26491$afc38c87@news.optusnet.com.au> <6sh458F60mcsU1@mid.individual.net> In-Reply-To: <6sh458F60mcsU1@mid.individual.net> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Lines: 50 Message-ID: <4963d11b$0$25646$afc38c87@news.optusnet.com.au> NNTP-Posting-Host: 122.106.220.150 X-Trace: 1231278363 25646 122.106.220.150 X-Original-Bytes: 2922