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Old 14th January 2006, 09:57 AM   #1
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Default Anatoly Kochetov simple AB

Here it is:

Pay attention, that there is low PSRR, so it needs stabilised supplies. Very good at sim!
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Old 14th January 2006, 10:53 AM   #2
edl is offline edl  Hungary
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Link not really works, so I attached the schema. hope it helps.

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File Type: gif a_kochetov_clab_r1.gif (7.8 KB, 397 views)
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Old 14th January 2006, 10:57 AM   #3
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I think C2 is not necessary and even bad for the operation of the output stage.

This is a class A SE amp , not a class A/B.
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Old 14th January 2006, 11:39 AM   #4
MikeB is offline MikeB  Germany
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I guess C2 is intended to turn it into a push pull. But simple is not always good...
This might be dangerous, during power up of the amp, C2 is empty and will open both output devices at the same time. Ouch !
Also PSRR is horrible this way. (Oh, Kuzmenko already mentioned)

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Old 14th January 2006, 09:42 PM   #5
djk is offline djk
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Low voltage zeners have very poor knee characteristics, and the Vgs ot the IRF type FETs is temperatute sensitive.

Result is unstable bias.
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