Re: [TCML] Proper NST Protection

["Paul Brodie" <pbbrodie@xxxxxxxxxxxxx>]

I can let you have 18 brand new MOV's, that are the ones specified for the 
Terry Filter, for cheap. I bought them to build one and them never did build 
it. I sold the neon transformer and used MOT's instead.
Contact me off list.
Paul
Think Positive

----- Original Message ----- 
From: Quarkster
To: Tesla Coil Mailing List
Sent: Monday, October 19, 2009 22:07
Subject: Re: [TCML] Proper NST Protection


Brandon -

A Terry filter should be used in conjunction with a safety gap.

You can get most of the protection offered by a Terry filter by deleting the
MOVs and using only the basic R-C network.

Shopping on eBay, you should be able to get the required parts without
spending much more than $20.

The 1K, 100W resistors can be single 1K Ohm parts, a pair of
series-connected 500 Ohm resistors, or any combination of power resistors
that will give a total resistance of "around" 1K Ohms.

Likewise, the bypass capacitors can be old 500pF, 20kV ceramic "doorknobs",
or a string of film caps (a "MMC").

Regards,
Herr Zapp
----- Original Message ----- 
From: "Brandon Hendershot" <mrbrandman@xxxxxxx>
To: "Tesla Coil Mailing List" <tesla@xxxxxxxxxx>
Sent: Sunday, October 18, 2009 10:37 PM
Subject: [TCML] Proper NST Protection


> I've been running a half-dead NST on my coil it's entirenlife without 
> knowing it, and now's the time to deal with it... The pain of buying a new 
> one without the experience of blowing it up! Pitiful... Anyways,  to keep 
> this new one on it's way in mint condition, I need some form  of 
> protection. This calls for a safety gap and/or a Terry filter. I'm nowhere 
> close to being able to afford the parts for one of those. So, will a 
> safety gap across the HV terminals be adequate enough  protection for the 
> new NST? Or do I need to fork out another $60 (i  dont have) on this 
> thing?
> _______________________________________________
> Tesla mailing list
> Tesla@xxxxxxxxxx
> http://www.pupman.com/mailman/listinfo/tesla

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