Re: [TCML] Terry Filter Question

[otmaskin5@xxxxxxx]

I was afraid that was the case.  Thanks for the reply.





-----Original Message-----
From: Lau, Gary <Gary.Lau@xxxxxx>
To: Tesla Coil Mailing List <tesla@xxxxxxxxxx>
Sent: Sat, Feb 20, 2010 7:06 pm
Subject: RE: [TCML] Terry Filter Question


You cannot change the order of the components.  An R-C low-pass filter only 
orks if it's built to the correct topology - it only works in one direction.
Sorry,
ary Lau
A, USA
> -----Original Message-----
 From: tesla-bounces@xxxxxxxxxx [mailto:tesla-bounces@xxxxxxxxxx] On
 Behalf Of otmaskin5@xxxxxxx
 Sent: Saturday, February 20, 2010 5:50 PM
 To: tesla@xxxxxxxxxx
 Subject: [TCML] Terry Filter Question
 
 
 The circuit diagrams for NST protection that I have seen have the components 
n
 this order:
 
 NST hot...to MOVs & bypass capacitors...to the 1K Ohm resistor (in 
eries)...to the
 main spark gap
 
 My question is whether the placement of the resistor is critical within the 
rder of
 the components.  In other words, would the components work in this order:
 
 NST hot...to 1K Ohm resistor (in series)...to MOVs & bypass caps...to the main
 spark gap.
 
 
 The current project I'm working on has space limitations & a less that optimal 
ayout
 of the lower deck components (poor planning on my part - doh!).  The second
 option would allow for more direct layout of the primary circuit wiring and 
ave me
 some work in the process.  I'd appreciate any advice as to whether this would 
ork
 properly.
 
 Thanks, Dennis Hopkinton MA
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