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Old 23rd July 2003, 03:33 PM   #1
Higo is offline Higo  Argentina
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Default Silly question: GC is class A or AB amp?

I dont understand the internal LM3886 topology at all. I mean Im confused. It works like a class AB... or A amplifier ?
Thanks,
Marcelo.
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Old 23rd July 2003, 04:32 PM   #2
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I do not know anything about electronics but from the experience that I've seen regarding power amp's physical size in real life, almost all class a amps are coupled to rather large heatsinks.

Chris
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Old 23rd July 2003, 04:35 PM   #3
ronc is offline ronc  United States
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Old 23rd July 2003, 04:37 PM   #4
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Not silly at all.
Since it is a cheap and basically "non audiophile" amplifier chip, it is biased AB, at relativley low quiescent current. It would not be possible to put a complete class A amplifier desgin at that power rating on a single chip, since it would be impossibe to get the power dissipation managed.
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