[Central-Electronics] 20A stumped

[Jim Candela]

Paul,

   Maybe this thread is a clue to your problem:
http://mailman.qth.net/pipermail/central-electronics/2004-June/000333.html


Jim
Wd5JKO


________________________________
 From: Paul Kraemer <elespe at lisco.com>
To: central-electronics at mailman.qth.net 
Sent: Thursday, January 30, 2014 9:06 PM
Subject: [Central-Electronics] 20A stumped
 

While trying to align a 20A I find it impossible to get the first step correct balancing the red and green coil signals at the wipers of the two null pots.
Best I can get adjusting the spacing and tuning the slugs is 5v rms on pot A and 2.5v rms on pot B

Other than that the signals really look good on a scope running into a dummy load.  Aside from the other issue that full output  is only about 10w which I will address after the first issue is resolved

What am I missing?

Thanks
Paul K0UYA



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