Class A op amp circuits with balanced i/o - diyAudio
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Old 24th January 2011, 12:04 AM   #1
diyAudio Member
Join Date: Nov 2009
Default Class A op amp circuits with balanced i/o

Hi -

Talking about

direct coupled
balanced i/o
class A
op-amp circuits

Thinking National and That Corp.

Any schematics available?

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Old 25th January 2011, 11:36 AM   #2
AndrewT is offline AndrewT  Scotland
diyAudio Member
Join Date: Jul 2004
Location: Scottish Borders
I don't think there are any ClassA balanced opamps.
Maybe a thorough search will pull something out, but I doubt it.

Most balanced receivers and transmitters are ClassAB with a tiny to small amount of ClassA current capability.

You could read Pass for balanced topologies and Jung, Self, ESP, Rane & Jensen for implementing balanced configurations.
If ClassA is important then a discrete opamp may give what you need.
regards Andrew T.
Sent from my desktop computer using a keyboard
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