i remember i found few years ago some amplifiers that have inputs based on opamp's .....also some of the opamps were bootstrapped to increase the voltage swing....
does anyone have high quality schematics of power amplifiers that have opamp in the input - preferably bootstrapped and they could have mosfets or bjt at the output doesn't matter....power needed 50-100W /8ohm....
regards
daniel
does anyone have high quality schematics of power amplifiers that have opamp in the input - preferably bootstrapped and they could have mosfets or bjt at the output doesn't matter....power needed 50-100W /8ohm....
regards
daniel
Or this one (18w into 8ohms or 30w into 4ohms)
http://www.redcircuits.com/Page1.htm
Or this one(10w):
http://www.redcircuits.com/Page61.htm
http://www.redcircuits.com/Page1.htm
Or this one(10w):
http://www.redcircuits.com/Page61.htm
Here's one with PCB and alternative BJT and MOS versions - http://skory.gylcomp.hu/25wamp/25wamp.html
With the right heatsink you can get over 40w from one of these
Tony
With the right heatsink you can get over 40w from one of these
Tony
Of course, there is the Alexander amp
http://www.analog.com/UploadedFiles...211.pdf&fterm=alexander&fterm=alexander&la=en
http://www.analog.com/UploadedFiles...211.pdf&fterm=alexander&fterm=alexander&la=en
jerlwoo, you don't need to bring the center line back to the drivers. as a matter of fact, with the center line going back to the drivers, should you ever blow the amp up, guarantees the damage will include the drivers and VAS....
also.... is there any bias on this amp?
op amps make great input stages, as long as most of your voltage amplification comes later.... i like jerlwoo's op amp to VAS transition using common base.....
also.... is there any bias on this amp?
op amps make great input stages, as long as most of your voltage amplification comes later.... i like jerlwoo's op amp to VAS transition using common base.....
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