RE: [TCML] Terry Filter, Saftey Gap Distance?

["Lau, Gary" <Gary.Lau@xxxxxx>]

With my 15/60 NST operating from a 140V Variac, each of the two gaps measure 11/64".  But please understand that your setting is likely to be different.  The shape and diameter of the electrodes, and local altitude, maybe even air pressure, will all affect the setting.  Safety gaps should me built so they are easy to set the gap distances.

To Nicholas asking about safety gap electrodes, many including myself use brass drawer knobs.  You can use 3 of them, although I happened to have a brass cylinder that looked nice for the middle electrode - see bottom of http://www.laushaus.com/tesla/protection.htm

Regards, Gary Lau
MA,. USA

-----Original Message-----
From: tesla-bounces@xxxxxxxxxx [mailto:tesla-bounces@xxxxxxxxxx] On Behalf Of ConorPerry@xxxxxxxxxxx
Sent: Friday, June 13, 2008 6:12 PM
To: tesla@xxxxxxxxxx
Subject: [TCML] Terry Filter, Saftey Gap Distance?

As I've increased power my safety gaps on the Terry filter have started firing, sometimes very often.  I've seen the original schematic and several peoples builds, but never seen any distance shown for what the gaps should be.  I'd guess that they'd change depending on the transformer voltage, but what gaps for the standard NST voltages?

CP8071
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