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RE: Surge Suppression



Title: Message
Ed,
 
I have read the article and my natural skepticism is aroused. I would not be able to do a review in a short time.  I would prefer to challenge this technically, and that would take some testing and analysis.
 
As a first step, I would be interested to know why you would want to build the device?  What primary power device are you using, and what voltage level do you see at the track?  I was surprised to find at a recent fun run that the layout power was significantly less than 20 volts RMS at the track.  I have never measured surges or inductive spikes, but I imagine that clamping device mentioned would add no significant benefit to the club modules.  This is an off-the-cuff opinion offered in the absence of any hard data.
 
We recently lost an electronic whistle control on an MTH engine.  Two observations:
1. The design was very economical and there was no attempt at on-board protection.
2. MTH replaced it for free.
 
Did a transient cause the failure? Possibly. 
Would a transient suppressor have protected the circuit? Perhaps. 
Would I spend money on one? Probably not.
 
But I don't buy surge suppressors for my computers either.
 
I am off on vacation in a week. If you are still interested in this when I get back, I could look into the problem.
 
Regards,
 
Mike
-----Original Message-----  
From: ttat-members-owner@aoot.com [mailto:ttat-members-owner@aoot.com] On Behalf Of Edward Weltens
Sent: Monday, June 28, 2004 10:23 AM
To: ttat
Subject: Surge Suppression

Here is a website (.pdf) on transient voltage suppressors for O-gauge trains.
 
I was thinking of building something like this for home.  Any interest in looking at this for the club?
 
http://www.hirailers.com/surgepro1.pdf
 
Ed