RE: STUPID SIMULATIONS

• To: "'Tesla List'" <tesla-at-poodle.pupman-dot-com>
• Subject: RE: STUPID SIMULATIONS
• From: Tesla List <tesla-at-stic-dot-net>
• Date: Sat, 20 Sep 1997 00:29:15 -0500
• Approved: tesla-at-stic-dot-net

From: 	Edward V. Phillips[SMTP:ed-at-alumni.caltech.edu]
Sent: 	Friday, September 19, 1997 3:17 PM
To: 	tesla-at-pupman-dot-com
Subject: 	Re: STUPID SIMULATIONS

"> I use a simulator for electronic circuits called the Electronics
> Workbench. I can build simulations of circuits that I absolutely know
> work in the real world, and the simulator will give me results that
> are ridiculous. Like oscillators that don't oscillate. The
> Electronics Workbench is nice in that the students can't destroy
> expensive components, but give me a genuine protoboard circuit and
> REAL components ANY ....."
	I use EWB here with excellent results, from DC to VHF.
Have done quite a bit of TC modeling which appears to agree almost
perfectly with theoretical calculations.  Likewise modeling of the
charging of capacitors from neon transformers in the presence
of periodic spark gap breakdown.  You do have to be VERY careful
about how you set up the analysis options, however.  Using too 
few "points per cycle" can indeed make passive components appear
to oscillate, plus a number of other unreal things.
Ed

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