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[AMPS] HV Power Supply for 3-500Z

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Subject: [AMPS] HV Power Supply for 3-500Z
From: (Joe Subich, W8IK/4)
Date: Wed, 24 Feb 1999 22:28:18 -0500

> >
> >What taps can I use??
> >Have a like new!!! but old United Transformer Company Type S47 hv
> >transformer  115 vas primary secondary taps at 2000, 2500, and 3000 vac
> >center tap. 32 mf 4500 vdc cap and GE commercial full wave bridge. The
> >transformer weighs in at 25 lbs. No current rating but according to the
> >Twenty-Third Edition of the Radio Handbook should have an IVS of about
> >1.5 KW. Actual AC checked at the line here in house is 128 vac.
> ?  I own a S-47 transformer.  It is not recommended for  Fullwave Bridge
> service because the CT is designed to be operated at ground potential.
> The only game in town is Fullwave CT.

Since Rich didn't answer your question ...

With a full-wave CT rectifier and capacitor input filter, the 2500 volt
taps will provide 3250 volts no-load.  The Eimac catalog lists normal
operation of the 3-500Z at 3000 volts.

   ... Joe Subich, W8IK/4  ex-AD8I

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