[sdiy] inductor based distortion

Magnus Danielson cfmd at swipnet.se
Tue Jun 3 19:24:46 CEST 2003


From: Glen <mclilith at charter.net>
Subject: Re: [sdiy] inductor based distortion
Date: Tue, 03 Jun 2003 13:10:04 -0400

> At 01:03 PM 6/3/03 , Jim Patchell wrote:
> >	It a push pull tube amp, the DC bias current "cancels" out because of 
> >the way the center tapped transformer is used.  If you were to have a 
> >class A single ended amplifier, you would then have a problem with the 
> >bias current bringing the core closer to saturation.
> 
> You have a good point about the push pull configuration, but even with a
> single ended amplifier, is there really a danger of "killing" the
> transformer with the DC current? I don't mean with a huge current that
> burns up the windings. I know there is that potential danger.

Hmm... I haven't thought about it, but our tube-head friends should know.
I figure that the core may not be too underdimensioned or it will be saturated,
and then naturally must the primary side wires tollerate the worst case
heating.

Cheers,
Magnus



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