[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
RE: SAFETY GAP CONNECTIONS
Original poster: "Qndre Qndre" <qndre_encrypt@xxxxxxxxxxx>
Hello Ed,
normally the center tap IS tied to RF-ground to be at the same
potential as secondary base. Connecting it to mains ground is a bad
idea. Safety gaps protecting your transformer from radio frequency
from the primary circuit MUST also be wired to RF-ground since
connecting them to mains ground would put radio frequency current
into the mains destroying sensitive equipment. Also it's good when
they are at the same potential as the center tap. Just remember that
stuff grounded to RF-ground (so is for example the transformer's
core) is not safe to touch during operation since it might have some
voltage potential due to the ground line acting like an inductor for
high frequencies.
Regards, Q.
----Original Message Follows----
From: "Tesla list" <tesla@xxxxxxxxxx>
To: tesla@xxxxxxxxxx
Subject: SAFETY GAP CONNECTIONS
Date: Sat, 17 Dec 2005 13:53:58 -0700
Original poster: Ed Phillips <evp@xxxxxxxxxxx>
From some of these discussions I get the impression that there is
a recommendation that with a "two-gap" system protecting an NST the
center terminal of the gap should go to "an RF ground" SEPARATE from
the center tap (usually case) of the NST. That sounds wrong to me as
I can't see how such a connection would necessarily protect the
transformer from inadvertent over voltage conditions. Connection to
the center tap AND a good RF grounds makes more sense.
Ed