Conceptualised in the thread "Power Amp Under Development" here is the transistor output stage variant.
http://www.diyaudio.com/forums/showthread.php?postid=946429#post946429
A version has already been built by fellow diy'er Kraft and this thread is dedicated to the development of this version.
Cheers
Quasi
http://www.diyaudio.com/forums/showthread.php?postid=946429#post946429
A version has already been built by fellow diy'er Kraft and this thread is dedicated to the development of this version.
Cheers
Quasi
I hate people that try to be quasi quasi...
Why???Because you like to be symmetrical???
edl said:Hi,
Hmmm... Such high power amp without short-circut protection?!
Then it's not intended for PA usage... Then for what?
It is intended as a powerful high quality domestic power amp. The reason for this thread is because there have been requests (forum and email) for a varient of the mos design that used conventional power transistors, particularly TO3 types.
So here it is. Anyone who wants to build it and take advantage of TO3 devices they have laying around may do so. Or they can choose not to.
Cheers
Q
poobah said:I hate people that try to be quasi quasi...
Don't let Quasi moto hear you say that!
poobah said:I hate people that try to be quasi quasi...
NO CIGAR!
How how so so ?
mikeks said:
mikeks said:
Is your main concern about the trimpot wiper going o/c?
quasi said:Is your main concern about the trimpot wiper going o/c?
Yes.
Try shunt regulator below.
Its output impedance is lower than that of most monolithic voltage references.
Consequently, variation in output voltage due to anomalous variation in standing current is virtually nil.
Additionally, your output stage won't fry in the event of the wiper failing open.
Attachments
Compared : this bipolar to mosfet amplifier : what is better to built : Sond qualitiy I mean subject sound qualitiy : Can you describe sifference using word (your ear)
So this bipolar is +/- 70V : This is more than 300W 8ohm : but when yousing mosfets you get less power arond 200W ?
So why usnig dual power supply ? 60V and 70V can I use only 70 V ?
thanks
So this bipolar is +/- 70V : This is more than 300W 8ohm : but when yousing mosfets you get less power arond 200W ?
So why usnig dual power supply ? 60V and 70V can I use only 70 V ?
thanks
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