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- Newsgroups: sci.electronics
- Path: sparky!uunet!decwrl!pa.dec.com!engage.pko.dec.com!cimcad.enet.dec.com!pierson
- From: pierson@cimcad.enet.dec.com (Dave Pierson)
- Subject: Re: Filtering noise from a Van de Graaf
- Message-ID: <1992Oct9.122605.13112@engage.pko.dec.com>
- Sender: newsdaemon@engage.pko.dec.com (USENET News Daemon)
- Organization: Digital Equipment Corporation
- References: <1992Oct5.121847.20071@cc.uow.edu.au> <1992Oct8.145743.718@cmkrnl.com>
- Date: Fri, 9 Oct 1992 13:20:55 GMT
- Lines: 20
-
- >In article <1992Oct5.121847.20071@cc.uow.edu.au>, gkm@cc.uow.edu.au (Glen K
- Moore) writes:
-
- >> I have built a large Van de Graaf. Belt 6" wide and 6' high. Unfortunately
- >> it rresets computers and destroys chips in some equipment on the same mains.
- >> I have tried a few comercial flters with no success.
-
- That's a potent machine. It may or may not be "filterable". If the
- destruction is caused by mains carried spikes, fine. However there will
- be an electric field of nontrivial amount set up, then collapsed, with
- each discharge. This will couple direct to nearby devices, and may be
- large enough (for this machine) to do direct damage. (say, roughly,
- 200KV/Meter initial field strength. non trivial.)
-
- thanks
- dave pierson |the facts, as accurately as i can manage,
- Digital Equipment Corporation |the opinions, my own.
- 146 Main St |I am the NRA.
- Maynard, Mass 01754 pierson@msd27.enet.dec.com
- "He has read everything, and, to his credit, written nothing." A J Raffles
-