oh man, that looks old, are thoose really silicon transistors? hmm well I guess it's possible.
I have two lm12's deep in the cellar, I'd like to do something like that with them some day just for the hell of it.. 80watt driving something hmm, that gives some weird thoughts in my head :-D
I have two lm12's deep in the cellar, I'd like to do something like that with them some day just for the hell of it.. 80watt driving something hmm, that gives some weird thoughts in my head :-D
discrete op-amp --> the solution
Working voltage: +/-25v DC
http://www.bursonaudio.com/Burson_HDAM_Module.htm
http://www.audio-gd.com/enweb/pro/diy/OPA.htm
that is good to have an accurate VAS
with a domestic power
need just design a current stage in class A
easy with LED's polarization
you have to select numbers and color!
...the problem is thermal drift control
maybe a very big dissipator it's a way
or see this current stage with IGBT
http://www.diyaudio.com/forums/showthread.php?s=&threadid=128784
Working voltage: +/-25v DC
http://www.bursonaudio.com/Burson_HDAM_Module.htm
http://www.audio-gd.com/enweb/pro/diy/OPA.htm
that is good to have an accurate VAS
with a domestic power
need just design a current stage in class A
easy with LED's polarization
you have to select numbers and color!
...the problem is thermal drift control
maybe a very big dissipator it's a way
or see this current stage with IGBT
http://www.diyaudio.com/forums/showthread.php?s=&threadid=128784
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Re: IGBT version
Not quite sure why it is class A. The output stage is classA, what about the OPAMP, its crossover distortion will simply be amplified, what is the point?
Not quite sure why it is class A. The output stage is classA, what about the OPAMP, its crossover distortion will simply be amplified, what is the point?
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