[R-390] Bucking transformer

[Dan Merz]

Hi ,  another source for the circuit, http://www.r-390a.net/  click on
Compensation for High Line Voltage.  I used a 2amp 12.5 v center-tapped
transformer that I got from RS and put a switch in so I could choose from
two levels of reduction by using either the full winding or half the winding
in the bucking circuit on the output side.  Dan 

-----Original Message-----
From: r-390-bounces at mailman.qth.net [mailto:r-390-bounces at mailman.qth.net]
On Behalf Of Kenneth G. Gordon
Sent: Sunday, May 01, 2005 1:51 PM
To: R-390 at mailman.qth.net
Subject: Re: [R-390] Bucking transformer

Gene Dathe wrote:

> I want to drop my household voltage down to 115 to run the R390A 
> continuously.  Where can I get a good bucking transformer?  Any 
> circuit suggestions?

Go here:

http://www.mines.uidaho.edu/~glowbugs/receivers.htm

then go to 8) Line voltage adjustment. down on the page.

Ken W7EKB


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