[AMRadio] Valiant LV Xfmr Temp

sbjohnston at aol.com sbjohnston at aol.com
Sat Mar 21 14:44:44 EDT 2009

 That sounds too hot.? You may have something putting too much of a load on it, such as leaky electrolytic caps in the LV supply, or a problem in one of the stages that use the LV supply.

You can disconnect these various loads one at a time at various points to find the trouble, "divide-and-conquer" style.? For starters I'd break the secondary connection and see how hot the transformer gets just by itself.


Steve WD8DAS 
sbjohnston at aol.com 
Radio is your best entertainment value. 



-----Original Message-----
From: Bob Myers <w1xt at cox.net>
To: amradio at mailman.qth.net
Sent: Sat, 21 Mar 2009 12:53 pm
Subject: [AMRadio] Valiant LV Xfmr Temp

Folks, I just obtained a Johnson Valiant I. It is working but I find  
the low voltage power transformer gets fairly warm. I can put the palm  
of my hand on it for a few seconds but then that's enough. How warm  
should this transformer run? This is "measured by hand" without  
actually transmitting -- just in standby after an hour or so. Is this  
normal?  Thanks.

Bob W1XT/7

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