RE: NST protection

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Ted Rosenberg" <Ted.Rosenberg-at-radioshack-dot-com> 

Simon:

First, glad to hear you took the sensible approach. I will too the next
time.
In the meantime, build the "Fritz Filter."
Terry came up with a transformer protection circuit that works.
He can explain the techy stuff if you need to know. But $50 USD saved my
15/60 I am sure.

The website where you'll find the schematic is:

http://users.better-dot-org/tfritz/NSTFilt.jpg

All parts were ordered from Digi-Key on line at about $50.
I used a RadioShack 5x7 perf board although with the safety gap on the same
board, space was tight. Your choice.

Safety First
and Drill Presses, Saws, etc are MORE dangerous than NSTs. Ask any builder
:))

Ted




-----Original Message-----
From: Tesla list [mailto:tesla-at-pupman-dot-com]
Sent: Thursday, December 07, 2000 1:04 AM
To: tesla-at-pupman-dot-com
Subject: NST protection


Original poster: "Simon Yorkston" <quantumx-at-mail.ozemail-dot-com.au> 


Hey all-
thanks for the overwhelming response- I saved myself greif, and cut the
tops off my HDPE supports, and the coil went in with a satisfying click :)

I also pickup up a NST today- a shopping centre replaced its entire
neon-light displays- I went into a room, and had a choice of about 20
NST's! It was great.. I settled for a 15kV 24mA NST; I didn't want to go
any higher (I don't want to die on my first coil :))

Now that I've got this thing, I would like to know how to protect it- I
have seen the odd diagram floating around the net, but was wondering if
anyone had found a simple cost-effective way...

Thanks again,
Simon