The Amazing Fet Circlotron by Mike Rothacher

Nelson Pass · 3rd October 2008, 09:50 PM

Mike Rothacher wrote a great project article and allowed us to
put it up on

www.passdiy.com

I'm sure you will all enjoy it.

Zero Cool · 3rd October 2008, 09:52 PM

This should be Interesting. Ralph Karsten from Atma-Sphere is a friend of mine and we talked about something like this long ago.

off to read the article now!!

Fuling · 3rd October 2008, 10:17 PM

Very interesting!
I recognize the circuit, Circlomanen made something VERY similar a couple of years ago

Magura · 3rd October 2008, 11:02 PM

That is one very interesting (and well written) piece.

Old wine on new bottles, sure, but with enough attention to detail., to allow anybody to keep up.....even me

Magura

EUVL · 4th October 2008, 01:36 AM

http://www.diyaudio.com/forums/showt...64#post1256464

Patrick

EUVL · 4th October 2008, 02:17 AM

BTW, a pair of the the cascoded LU1014 a al ZV9 will make a simple yet excellent Circlotron Follower.

Patrick

Charles Hansen · 4th October 2008, 03:26 AM

Anyone wanting to build one of these should do so soon. The 2SJ74 was discontinued at the start of the year. Some of the distributors will have them in stock for another year or so, but after that they will become very difficult to find.

lumanauw · 4th October 2008, 04:46 AM

Can a circlotron work in low bias classAB, or classA is a must?

Gyuri · 4th October 2008, 10:04 AM

Obliged producing an amplifier like this for myself will be me.

bappe · 4th October 2008, 11:24 AM

Very nice and well written article!

http://www.diyaudio.com/forums/showt...33#post1116433

Anders

3rd October 2008, 09:50 PM	#1
Nelson Pass The one and only Join Date: Mar 2001	The Amazing Fet Circlotron by Mike Rothacher Mike Rothacher wrote a great project article and allowed us to put it up on www.passdiy.com I'm sure you will all enjoy it.

3rd October 2008, 11:02 PM	#4
Magura diyAudio Member Join Date: Oct 2003 Location: Denmark, Viborg	That is one very interesting (and well written) piece. Old wine on new bottles, sure, but with enough attention to detail., to allow anybody to keep up.....even me Magura __________________ Everything is possible....to do the impossible just takes a little while longer. www.class-a-labs.com

4th October 2008, 10:04 AM	#9
Gyuri diyAudio Member Join Date: Nov 2003 Location: Budapest	Obliged producing an amplifier like this for myself will be me. __________________ Those who would have deserved the life they are all dead already. "Oh, my dead dears!" - Captain Cat

4th October 2008, 11:24 AM	#10
bappe diyAudio Member Join Date: Sep 2002 Location: Furulund, SWEDEN	Another take on the subject. Very nice and well written article! http://www.diyaudio.com/forums/showt...33#post1116433 Anders

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3rd October 2008, 09:52 PM	#2
Zero Cool Audio Junkie diyAudio Member Join Date: Sep 2004 Location: MN	This should be Interesting. Ralph Karsten from Atma-Sphere is a friend of mine and we talked about something like this long ago. off to read the article now!!

3rd October 2008, 10:17 PM	#3
Fuling diyAudio Member Join Date: Aug 2001 Location: Sweden (Mora)	Very interesting! I recognize the circuit, Circlomanen made something VERY similar a couple of years ago

4th October 2008, 01:36 AM	#5
EUVL diyAudio Member Join Date: Oct 2003	http://www.diyaudio.com/forums/showt...64#post1256464 Patrick

4th October 2008, 02:17 AM	#6
EUVL diyAudio Member Join Date: Oct 2003	BTW, a pair of the the cascoded LU1014 a al ZV9 will make a simple yet excellent Circlotron Follower. Patrick

4th October 2008, 03:26 AM	#7
Charles Hansen diyAudio Member Join Date: May 2003 Location: Colorado	Anyone wanting to build one of these should do so soon. The 2SJ74 was discontinued at the start of the year. Some of the distributors will have them in stock for another year or so, but after that they will become very difficult to find.

4th October 2008, 04:46 AM	#8
lumanauw diyAudio Moderator Emeritus Join Date: Oct 2002 Location: Bandung	Can a circlotron work in low bias classAB, or classA is a must?

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