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Old 7th May 2006, 10:42 PM   #1
Ryssen is offline Ryssen  Sweden
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Default Hybrid amp schema?

Just thinking about future projects,I found this http://digilander.libero.it/essentia...fier_+sche.htm
and it looks nice,but does anyone have a schema with usual transistors,not mos trasnsistors??
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Old 8th May 2006, 05:52 PM   #2
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Hey,

Hybrid

Jim
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Old 8th May 2006, 06:10 PM   #3
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Nice! How much heat does it make,what heatsinks to use?
And a trafo 2x35v how big for 1 chanel?
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Old 9th May 2006, 06:54 AM   #4
Ryssen is offline Ryssen  Sweden
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2x50v DC isn´t it a little to high for class A at 30w?Just thinking.

If I where to try this one with regular transistors,e.x MJE 21193/94 or
MJ15003/04 are there any changes needed to be made?
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Old 9th May 2006, 08:05 AM   #5
jim is offline jim  Belgium
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Quote:
Originally posted by Ryssen
Nice! How much heat does it make,what heatsinks to use?
And a trafo 2x35v how big for 1 chanel?
Don't know, it's not my schematic, just one I found while surfing.
sorry,

Jim
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Old 24th May 2006, 05:50 PM   #6
Ryssen is offline Ryssen  Sweden
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Been thinking about this http://www.geocities.com/Tokyo/5913/6922.html
will it work with such a high voltage on rails in class A?
Or if i lower them a bit maybee +- 35v?
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Old 28th May 2006, 10:47 PM   #7
Ryssen is offline Ryssen  Sweden
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The tubes used in this amp http://www.wdehaan.demon.nl/hybrid/6463hyb/index.html
5687,7044 or 6463 do they have any equalents like 12AT7 or..?
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Old 28th May 2006, 10:51 PM   #8
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i recently built a hybrid amplifier useing 6922 front end.. there is a thread in this section and over in the solid state section about it..
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Old 29th May 2006, 12:16 AM   #9
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Here is what I did, idle current is 500 mA, be sure to use multiturn potentiometers.

Oh didn't see you wanted bjt's instead of fets, why would you want that?
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Old 29th May 2006, 12:37 AM   #10
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this is what i did.... it still needs a bit of refineing and could probably do with haveing another SS stage added makeing it into a tripple darlington but it is all explained HERE I suggest you have a good read of that.. this is the circuit as it stands now and it is working on the bench, i have yet to refine it and build a final version as i got distracted by a chipamp... but it is a good start...
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