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Old 28th January 2013, 04:49 PM   #81
gl is offline gl  United States
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Yes, indeed.

NP has more or less explained here how SE bias is added, although this too was many years ago. The math for calculating the circuit values is fully explained in the 'Leaving Class A' article.

Sometimes I think that DIYAudio should rent storage space to the CIA for it's deepest secrets. They would be perfectly safe.

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Old 21st February 2013, 07:16 PM   #82
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Read the brochure (No Skin, just Audio porn). I'm a little perplexed about the Push-Pull/Single ended Bias Bis??? I've heard(read) talk about it. I've seen a patent with such an idea I beleive but, never seen it in practice, I don't think? Of coarse because it might be in a current product I might not get any response? But then, is the patent expeired for that too?
flg. Please provide any info on this patent. Thank you.
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Old 21st February 2013, 07:44 PM   #83
flg is online now flg  United States
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Well, everyone always provides everything I want as soon as I ask
Start here US Patent Full-Text Database Boolean Search It really helps if you know the number??? or Nelson A. Pass (Not sure about the A).
search this forum also. There is a duetchlander who documents gobs of stuff like Pass stuff...
Maybe when I get home I have more numbers and such...
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Old 21st February 2013, 08:19 PM   #84
Zen Mod is offline Zen Mod  Serbia
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A Concise Guide to the Published Amplifier Circuits of Nelson Pass
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Old 21st February 2013, 08:23 PM   #85
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Quote:
Originally Posted by flg View Post
Well, everyone always provides everything I want as soon as I ask
Start here US Patent Full-Text Database Boolean Search It really helps if you know the number??? or Nelson A. Pass (Not sure about the A).
search this forum also. There is a duetchlander who documents gobs of stuff like Pass stuff...
Maybe when I get home I have more numbers and such...
Thanks flg. A patent number, or assignee or inventor will be adequate. The DIYer whose user name begins with tief..maybe the person.
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Old 21st February 2013, 08:25 PM   #86
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Thanks Zen Mod. flg; it is US 3,995,228; an interesting read.
Best regards

Last edited by Antoinel; 21st February 2013 at 08:33 PM.
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Old 21st February 2013, 08:47 PM   #87
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It's all Duetch to me.
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Old 21st February 2013, 08:48 PM   #88
Zen Mod is offline Zen Mod  Serbia
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it's even Duetcher for moi .

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Old 21st February 2013, 09:00 PM   #89
flg is online now flg  United States
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5,343,166 is good too
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Old 21st February 2013, 09:08 PM   #90
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Thanks Zen Mod. flg; it is US 3,995,228; an interesting read.
Best regards
Too complicated for me. I need simple.
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