I have seen somebody talking about this schematic where the input is handled by OPA627 and output is some pushpull stage... is it really possible to use opa627.. some say this chip is better than many discrete designs which I dont believe tough. But Is it really possible to use this as input stage?
diff pair, even VAS usually don't drive single push-pull transistor pair output stages at high power, or current either so why would you expect "op amp as front end" to have to
dual, triple followers, or CFA are pretty standard in BJT power amp output stages, most competent designers recognize even MOSFET output require drivers to handle output Q gate dynamic currents
dual, triple followers, or CFA are pretty standard in BJT power amp output stages, most competent designers recognize even MOSFET output require drivers to handle output Q gate dynamic currents
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You might be interested http://www.diyaudio.com/forums/solid-state/207746-hal-opb-amplifier-2.html
op amps can be used in floating supply power amps to 100s of W
Crown, QSC, Behringer all make cheap PA with this topology
http://www.diyaudio.com/forums/soli...o-floating-supply-amplifiers.html#post2202342
http://www.diyaudio.com/forums/solid-state/200572-inverted-not-inverting-output-stage.html
http://www.diyaudio.com/forums/solid-state/101602-qsc-clones-backwards-amps.html#post1204834
Crown, QSC, Behringer all make cheap PA with this topology
http://www.diyaudio.com/forums/soli...o-floating-supply-amplifiers.html#post2202342
http://www.diyaudio.com/forums/solid-state/200572-inverted-not-inverting-output-stage.html
http://www.diyaudio.com/forums/solid-state/101602-qsc-clones-backwards-amps.html#post1204834
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- OPA627 as input stage? Output can be BJTs..