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Article #1001Re: An unusual Oscilloscope phenomenon
From: Dennis
Date: Thu, 25 Jun 2009 13:13
Date: Thu, 25 Jun 2009 13:13
47 lines
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2967 bytes
"Spehro Pefhany" <speffSNIP@interlogDOTyou.knowwhat> wrote in message news:d4p6459ct55gnvl3i1dnsij3mab9tt046u@4ax.com... > On Thu, 25 Jun 2009 19:38:11 +0800, "Dennis" <dennis@nowhere.com> > wrote: > >> >>"Spehro Pefhany" <speffSNIP@interlogDOTyou.knowwhat> wrote in message >>news:psm645hcft91v992v67lovmj2fmp4ocr9d@4ax.com... >>> On Thu, 25 Jun 2009 03:49:50 +0100, Dirk Bruere at NeoPax >>> <dirk.bruere@gmail.com> wrote: >>> >>>>David L. Jones wrote: >>>>> Check out a rather unusual phenomenon you can see on your oscilloscope >>>>> in my >>>>> latest blog (#14): >>>>> http://www.alternatezone.com/eevblog/ >>>>> See if you can get it to happen on your scope! >>>>> I'll offer a free subscription to my blog for the best screen shot >>>>> posted >>>>> :-> >>>>> >>>>> Oh, and the probe doesn't have to be shorted either. >>>>> >>>>> Have fun. >>>>> Dave. >>>> >>>>Got it immediately, because I once worked in lab that had cheap plastic >>>>chairs that generated 1cm sparks when you stood up! >>> >>> Back in the old days, they used to generate 1/2" sparks. >>> >> >>Nasty stuff that Bakelite. > > Goes nicely with wood cases: > > http://ip.co.za/shop/images/wheatstone.jpg > http://www.surplussales.com/Images/Equipment/TestEquipment/Leeds-Northrup/eqp-wbm-119828/eqp-wbm-119828_lg.jpg > > When I started out with a government run telco and some of the gear was still in nice wooden cases. Over the years I saw pallet loads of test gear consigned to scrap. Loads of bridges, wood cased multimeters and bakelite AVO meters. These things sell for quite a few dollars nowadays - aint hindsight nice!
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X-Google-Thread: a5a6238865,2fb4482ba391e6 X-Google-Attributes: gida5a6238865,public,usenet X-Google-NewGroupId: yes X-Google-Language: ENGLISH,ASCII-7-bit Path: arc1-ca.pugleaf.net!g2news2.google.com!news2.google.com!border1.nntp.dca.giganews.com!nntp.giganews.com!newsfeed.iinet.net.au!newsfeed.iinet.net.au!per-qv1-newsstorage1.iinet.net.au!per-qv1-newsstorage1.iinet.net.au!per-qv1-newsreader-01.iinet.net.au!not-for-mail From: "Dennis" <dennis@nowhere.com> Newsgroups: sci.electronics.design,aus.electronics References: <h8B0m.53620$FI5.3564@newsfe12.iad> <7ag6tuF1v6dv2U1@mid.individual.net> <psm645hcft91v992v67lovmj2fmp4ocr9d@4ax.com> <4a4361a5$0$2591$5a62ac22@per-qv1-newsreader-01.iinet.net.au> <d4p6459ct55gnvl3i1dnsij3mab9tt046u@4ax.com> Subject: Re: An unusual Oscilloscope phenomenon Date: Thu, 25 Jun 2009 21:13:55 +0800 X-Priority: 3 X-MSMail-Priority: Normal X-Newsreader: Microsoft Outlook Express 6.00.2900.5512 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.5579 X-RFC2646: Format=Flowed; Original X-Antivirus: avast! (VPS 090624-0, 24/06/2009), Outbound message X-Antivirus-Status: Clean Lines: 50 Message-ID: <4a437816$0$2603$5a62ac22@per-qv1-newsreader-01.iinet.net.au> NNTP-Posting-Host: 124.169.160.78 X-Trace: 1245935638 per-qv1-newsreader-01.iinet.net.au 2603 124.169.160.78