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Re: ElectroMagnetic Compatibility and Tesla coils (fwd)
---------- Forwarded message ----------
Date: Sun, 26 Apr 1998 13:23:45 EDT
From: Rscopper <Rscopper-at-aol-dot-com>
To: tesla-at-pupman-dot-com
Subject: Re: ElectroMagnetic Compatibility and Tesla coils (fwd)
Most automotive electronic component suppliers use SAE guidelines to test for
EMC. These specs require testing at a field strength of 200Volts/Meter, since
this is about the strongest field you will ever drive by - such as the Voice-
of-America transmitter. Consumer electronics tend not to be required to pass
large field strength tests, but are required to take 15-20KV short pulses that
would simulate static from rubbing your shoes on a carpet. FCC requires
devices not to disturb other devices, UL requires them to be safe.
I could easily max out a 300V/M field strength meter at 4-feet away from my
old 6-inch secondary powered by a 15KV 60ma NST. This could disable vehicles
driving by! Keep this in mind running your coils outside in your front yard.
If your neighbor drives by and his engine revs-up, ABS brakes stop working,
and the Air-Bag goes off....you'll know why (especially if his car has a
plastic/fiberglass body).
Scott