DIY progress report - Page 227

flg · 14th January 2011, 09:47 PM

Quote:

Originally Posted by Nelson Pass

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.

Nelson Pass · 14th January 2011, 09:53 PM

Well, it's not like I don't have one...

flg · 14th January 2011, 09:55 PM

Quote:

Originally Posted by Tazzz

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

flg · 14th January 2011, 10:14 PM

Cool

What exactly connects to "Ref1", "Ref2" and "Bias"?
What devices would this be for?

Melon Head · 14th January 2011, 11:20 PM

Thanks Nelson

Zen Mod · 14th January 2011, 11:29 PM

that's most likely just one plane of pcb

Papa is teasing us , as usual

Nelson Pass · 15th January 2011, 12:32 AM

Quote:

Originally Posted by Zen Mod

Papa is teasing us , as usual

I wouldn't want you to think there's nothing behind the
curtain...

flg · 15th January 2011, 01:24 AM

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???

Zen Mod · 15th January 2011, 01:51 AM

Quote:

Originally Posted by Nelson Pass

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 .....

Nelson Pass · 15th January 2011, 01:52 AM

Quote:

Originally Posted by flg

Is it possible to apply susy to these things?

Yes, it's not very difficult.

Perhaps we should call it a Susytron.

14th January 2011, 10:14 PM	#2264
flg diyAudio Member Join Date: Jul 2005 Location: North East	Cool What exactly connects to "Ref1", "Ref2" and "Bias"? What devices would this be for? __________________ “Be who you are and say what you feel because those who mind don't matter and those who matter don't mind.” Dr. Seuss

14th January 2011, 11:29 PM	#2266
Zen Mod diyAudio Member Join Date: Jan 2003 Location: ancient Batsch , behind Iron Curtain	that's most likely just one plane of pcb Papa is teasing us , as usual __________________ my Papa is smarter than your Nelson ! tnx to clean thread ; Cook Book ; PSM LS Cook Book ; Baby Diyaudio FORUM ; Mighty ZM's Bloggg;I'm dumb

15th January 2011, 01:24 AM	#2268
flg diyAudio Member Join Date: Jul 2005 Location: North East	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??? __________________ “Be who you are and say what you feel because those who mind don't matter and those who matter don't mind.” Dr. Seuss

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14th January 2011, 11:20 PM	#2265
Melon Head Banned Join Date: Nov 2006	Thanks Nelson