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Article #1524Re: Tingles from power supply
From: Eeyore
Date: Sun, 08 Mar 2009 19:41
Date: Sun, 08 Mar 2009 19:41
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"J.A. Legris" wrote: > On Mar 8, 10:35 am, Sylvia Else <syl...@not.at.this.address> wrote: > > Sylvia Else wrote: > > > I've recently bought a D-Link DIR-300 wireless router. While > > > disconnecting its power supply from it, I got a tingling sensation when > > > I touched the plug (to be clear, I'm talking about the 5V DC plug, not > > > the mains plug). > > > > > An AVO meter shows about 90V AC to earth from either side of the 5V > > > plug. Short circuit current to earth is about 0.1mA. > > > > > Still, I thought these things were meant to be completely isolated. Has > > > there been a change of approach? > > > > Apparently it's normal, and is related to RFI suppression. > > Just think, the only thing between you and the great beyond is a thin > layer of ceramic material, possibly contaminated with who-knows-what, > bearing a certification logo of dubious authenticity. It's time to > invest in some rubber-soled slippers. It HAS to be TWO caps or a single cap of special construction incorporating a safety barrier (Y2). Graham
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X-Google-Thread: 112d1e,5985c699c60fb1f8 X-Google-Thread: 103407,5985c699c60fb1f8 X-Google-Attributes: gid112d1e,gid103407,domainid0,public,usenet X-Google-Language: ENGLISH,ASCII-7-bit Path: arc1-ca.pugleaf.net!g2news1.google.com!news1.google.com!news4.google.com!feeder.news-service.com!feeder.news-service.com!news.astraweb.com!border3.a.newsrouter.astraweb.com!not-for-mail Message-ID: <49B41F74.1383DEB2@hotmail.com> Date: Sun, 08 Mar 2009 19:41:40 +0000 From: Eeyore <rabbitsfriendsandrelations@hotmail.com> Organization: Eeyore's gloomy place X-Mailer: Mozilla 4.8 [en] (Windows NT 5.0; U) X-Accept-Language: en MIME-Version: 1.0 Newsgroups: sci.electronics.design,aus.electronics Subject: Re: Tingles from power supply References: <00b89736$0$7237$c3e8da3@news.astraweb.com> <00b89aa6$0$7280$c3e8da3@news.astraweb.com> <5f16f772-e530-4666-8176-721c091c0ac0@p11g2000yqe.googlegroups.com> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Lines: 29 NNTP-Posting-Host: 70f7ed32.news.astraweb.com X-Trace: DXC=B<=PSc`<8Ll92gaK\0;3cnL?0kYOcDh@j]A]oW>I^V^afj^HSLUZPUmYS`@2JBI2kkjad1;GlU1cl6DbJ56Sn94k