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In the Forum: Melquiades Amplifier
In the Thread: Single-stage Melquiades vs. DHT amps
Post Subject: The filament transformerPosted by Romy the Cat on: 5/10/2009
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I do not think that it needs to be with center-tapped secondary but rather with symmetric secondary. I have good transformer with Faraday Shield that might take 6.3V or 12.6V and give all my DH voltages and with secondary that would be completely decupled from the IDH filament.

http://www.goodsoundclub.com/PDF/6,3_to_multi_voltage_trans.pdf

This is a cool idea to use BUT the problem that I see is that the hum-killing centering pot will be shifting too much when I move from 2.5V to 4V. So, what I need I think would be essentially something like this:

Filament_transformer_for_DH.JPG

The Cat

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