🚀 go-pugleaf

RetroBBS NetNews Server

Inspired by RockSolid Light RIP Retro Guy

Article View: sci.electronics
Article #2864

Re: Jacob's Ladder

#2864
From: Andrew Pettifer
Date: Tue, 14 Apr 1992 22:06
24 lines
1769 bytes
From article <1992Apr10.213234.8893@e2big.mko.dec.com>, by pierson@cimill.enet.dec.com (Dave Pierson):
> In article <kyZyiB1w164w@inqmind.bison.mb.ca>, magus@inqmind.bison.mb.ca
> (James Copland) writes, in part:
> 
>>danube@dirac.physics.sunsyb.edu (Dan Koller*) writes:
>> 
>>>    The following works rather nicely, and can be made small.  I found an
>>> old DEC monitor a year ago, stripped the CRT and threw the rest in the
>>> junk box.  Recently it occurred to me the HV section probably could be
>>> made to work.
>>> It's sufficiently powerful to make a 3-4" high Jacob's Ladder, and if you
>>> like PC board art, the extra components look kind of neat on this 
>>> particular board.  If it runs in this fashion without burning up for more
>>> than 20 min., 
> 	A wise precaution.  Some HV supplies are not designed for high load
> 	operation. And, as has been pointed out, such things are not quiet,
> 	RF wise.  The RF may well peak at a point set by the length of the
> 	electrodes.  Some of those frequencies are used by folk who do not take
> 	kindly to emi...
> 
Would using DC reduce in any way the amount of RF generated?
Most EHT transformers in monitors nowadays, have an integral HV diode, if
you used a Leyden jar to reduce the ripple, and mounted the Jacobs ladder
within a steel mesh tube, how quiet would that be do you think?
Technical Details
Message-ID: <1992Apr14.170600.29511@minyos.xx.rmit.oz.au>
Path: arc1-ca.pugleaf.net!sparky!uunet!munnari.oz.au!goanna!minyos.xx.rmit.oz.au!rxtajp
References: <1992Apr10.213234.8893@e2big.mko.dec.com>

Show Full Headers
Complete Article Headers
Path: arc1-ca.pugleaf.net!sparky!uunet!munnari.oz.au!goanna!minyos.xx.rmit.oz.au!rxtajp
From: rxtajp@minyos.xx.rmit.oz.au (Andrew Pettifer)
Newsgroups: sci.electronics
Subject: Re: Jacob's Ladder
Message-ID: <1992Apr14.170600.29511@minyos.xx.rmit.oz.au>
Date: 14 Apr 92 22:06:00 GMT
References: <1992Apr10.213234.8893@e2big.mko.dec.com>
Organization: RMIT Computer Centre, Melbourne Australia.
Lines: 24