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Old 14th January 2011, 09:47 PM   #2261
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Quote:
Originally Posted by Nelson Pass View Post
I don't know. Is there some particular reason you prefer a
circlotron?

Simple, minimul, Zen-Like, even if it's only a follower! The prototype I built drifted around to much? I suppose the real trick is to find gain devices with 0 temperature coefficient, that can operate at a convenient Iq, and having semetrical curves while swinging + and - current.
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Old 14th January 2011, 09:53 PM   #2262
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Well, it's not like I don't have one...

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File Type: jpg CIRC.jpg (41.8 KB, 815 views)
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Old 14th January 2011, 09:55 PM   #2263
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Originally Posted by Tazzz View Post
Seems to me to be a logical step to fold half of an F5 into a circlotron and replace the output fets with Jfets.

I had some thoughts like that when I saw The Amazing FET Circlotron
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Old 14th January 2011, 10:14 PM   #2264
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Cool
What exactly connects to "Ref1", "Ref2" and "Bias"?
What devices would this be for?
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Old 14th January 2011, 11:20 PM   #2265
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Thanks Nelson
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Old 14th January 2011, 11:29 PM   #2266
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that's most likely just one plane of pcb

Papa is teasing us , as usual
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Old 15th January 2011, 12:32 AM   #2267
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Originally Posted by Zen Mod View Post
Papa is teasing us , as usual
I wouldn't want you to think there's nothing behind the
curtain...

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Old 15th January 2011, 01:24 AM   #2268
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No, the copper we see makes Circlotron sense. There is some skinny traces going off to the left that would only be an LED thingy. And, no big holes for pwr supply connections or speaker outputs... But, the "Ref1", "Ref2" and "Bias" is an important area I have not suceeded in developing enough stability in output offset. I think that is the biggest area to conquer. But, Biasing the 2 halfs into a semetrical complamentary/balanced behaviour is also important.
I wonder though? Is it posible to apply susy to these things???
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Old 15th January 2011, 01:51 AM   #2269
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Quote:
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I wouldn't want you to think there's nothing behind the
curtain...

I wouldn't want you to think that I ever think that .....

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Old 15th January 2011, 01:52 AM   #2270
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Is it possible to apply susy to these things?
Yes, it's not very difficult.

Perhaps we should call it a Susytron.

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