102 12v section @450ma
I have built two of these before one with this transformer which I can't remember were it hook up and one with out. I assume I had a tap from my power transformer for this. I just don't see the separate transformer in the layout for the 102. I must be getting old and forgetful. I little help would be appreciated. Bill
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The AA Dumble board has a Delon-type voltage doubler that feeds the 7812 voltage regulator from the 6.3 VAC secondary winding. Allows you to make 12 VDC from the filament supply so you don't have to install a separate 12 VAC transformer.