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Article #2223Re: HV protection for receiver input?
From: Ken Smith
Date: Wed, 06 Aug 2003 15:17
Date: Wed, 06 Aug 2003 15:17
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1993 bytes
In article <bgr1dh$2m7$1@news.eusc.inter.net>, Jerry G. <jerryg50@hotmail.com> wrote: [.... neon lamp ...] >In your case you want to use it as a hard voltage clamp. Put a resistor >of about 27 to 33 ohms in series with the lamp, to allow isolation from >its capacitive characteristics. The stray capacitance of the lamp is >about 3 to 5 pF. I disagree with adding the resistor. Just find a way to live with the extra 5pF. The resistor in series with it will cause losses. The 5pF will cause a mistuning that may either be unimportant or easy to correct for. -- -- kensmith@rahul.net forging knowledge
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X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 112d1e,5731ee67b7a682a6 X-Google-Attributes: gid112d1e,public X-Google-Thread: 1131b0,5731ee67b7a682a6 X-Google-Attributes: gid1131b0,public X-Google-Thread: 103407,5731ee67b7a682a6 X-Google-Attributes: gid103407,public X-Google-Thread: 10d137,5731ee67b7a682a6 X-Google-Attributes: gid10d137,public X-Google-ArrivalTime: 2003-08-06 08:17:22 PST Path: arc1-ca.pugleaf.net!archiver1.google.com!news1.google.com!newsfeed.stanford.edu!bloom-beacon.mit.edu!nycmny1-snh1.gtei.net!crtntx1-snh1.gtei.net!lsanca1-snf1!news.gtei.net!news.mainstreet.net!wasp.rahul.net!blue.rahul.net!not-for-mail From: kensmith@violet.rahul.net (Ken Smith) Newsgroups: sci.electronics.design,alt.engineering.electrical,sci.electronics.repair,aus.electronics Subject: Re: HV protection for receiver input? Date: Wed, 6 Aug 2003 15:17:16 +0000 (UTC) Organization: a2i network Lines: 17 Message-ID: <bgr65s$siv$3@blue.rahul.net> References: <0001HW.BB56508400106C52F0386600@news.individual.net> <bgr1dh$2m7$1@news.eusc.inter.net> NNTP-Posting-Host: violet.rahul.net X-Trace: blue.rahul.net 1060183036 29279 66.237.72.28 (6 Aug 2003 15:17:16 GMT) X-Complaints-To: support@rahul.net NNTP-Posting-Date: Wed, 6 Aug 2003 15:17:16 +0000 (UTC) X-Newsreader: trn 4.0-test76 (Apr 2, 2001) Originator: kensmith@violet.rahul.net (Ken Smith)