EVGRAY Archive

ZOTL audio amplifier

Database ID: 112514
2019-03-06T15:13:09-08:00
Mick <[email protected]>

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<[email protected]>
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Ole,

Not sure if you are aware of these but the concept is really great.  I
just ran across this yesterday so still don't grock the full bandwidth
of the concept but it seems to have many things going for it as far as
being able to run a vacuum tube to it's full potential as an amplifier
and retaining all the transfer characteristics.

It looks as if the output of the tube is converted to DC though so I
don't get how the design does not incorporate the transfer function of
the rectifier.

It appears a tube is rectified and the DC control voltage is used to
modulate a carrier of 250kHz across a switching supply in order to
impedance match the output of the tube to a speaker allowing the
inductor to be designed for  single frequency rather than the whole
audio range.

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Message-ID <[email protected]>
Date Wed, 06 Mar 2019 15:13:09 -0800
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Subject ZOTL audio amplifier
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From Mick <[email protected]>