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Old 24th October 2006, 07:55 AM   #1
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Default More simple class A

Starting a new thread for a new circuit. Moderators if you feel this should be merged with "my simple class a approach" please do so.
Here we have the same output stage as before with a basic discrete opamp frontend, split rails, and no coupling capacitor.
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Old 24th October 2006, 08:04 AM   #2
ilimzn is offline ilimzn  Croatia
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You can omit R2 (replace it with a short)
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Old 24th October 2006, 08:10 AM   #3
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Yes it can be shorted and still work the same. A current mirror would be better hear but this is just a preliminary circuit for concept. Values and all are not final as I am in need of some help with diffrential circuit and frequency compensation.
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Old 24th October 2006, 10:20 AM   #4
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Your C3 looks too high for me.
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Old 24th October 2006, 12:26 PM   #5
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Without C3
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Old 24th October 2006, 12:28 PM   #6
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With C3
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Old 24th October 2006, 02:46 PM   #7
Ryssen is offline Ryssen  Sweden
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I am not so keen in construktion,but Wouldn´t a more "modern" transistors make the amp work better?
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Old 24th October 2006, 04:19 PM   #8
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Better transistors always will work better. I model with I have on hand to build with for the first "test" circuit. Speaking of which I spent the last couple hours building it. It is only very basic build without "real" ccs's but the sound quality is good. Offset at the output is more than I would like but improvments can be made to lower it easily.
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