Hello All,
I was under the impression that the transformer in the elec-trak is a Ferroresonant Transformer.
To hold the voltage constant.
Does anyone have a link to a site the explains how this thing works? (in simple terms.)
I am at loss in understanding why the transformer will not work when the capacitor dies.

Thanks
Jeff

Sincerely,
Jeffrey A. Krug
Test Engineer I
The Ensign-Bickford Aerospace & Defense Co.
640 Hopmeadow Street 				
P.O. Box 429
Simsbury, CT 06070
Phone: 860-843-2072
Fax: 860-843-2069
E-Mail: jakrug@EBA-D.com
Pager 860-802-4153 numeric

-----Original Message-----
From: roden [mailto:roden@ald.net]
Sent: Friday, January 30, 2004 1:26 PM
To: elec-trak
Cc: roden
Subject: Re: (ET) charging circuit

On 29 Jan 2004 at 19:49, gmbauman@alltel.net wrote:

> filtered by a
> capacitor.

That's not a filter capacitor.  It connects to a separate winding on the 
transformer, and helps it hold a constant voltage.  I don't really understand 
how it works, but apparently it's not really a resonant circuit - something 
about keeping the transformer core saturated?  Sorry, best I can do.  But it's 
definitely not a filter.

David Roden - Akron, Ohio, USA
1991 Solectria Force 144vac
1991 Ford Escort Green/EV 128vdc
1970 GE Elec-trak E15 36vdc
1974 Avco New Idea 36vdc
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