Power amp with current output, F1 competitor (kidding) - Page 3

djk · 26th September 2007, 01:49 AM

http://www.audiodesignguide.com/my/Cool_Follower1.GIF

Wireless World

It was in October 1976 Wireless World page 74

anatech · 26th September 2007, 02:56 AM

Hi djk,
Cool!

I think I've seen these "original and never seen design" before. Unfortunately for Andrea Ciuffoli, most have been designed in principle in other equipment. I have never received Wireless World before either. Too bad, it looks like it was a great publication.

At any rate, I doubt strongly that it's possible to design anything these days that hasn't existed in some form earlier on in time.

-Chris

PMA · 26th September 2007, 05:46 AM

Hi Hugh and Chris,

thank you, I should add that the circuit is just a hint and should be precised into reliable circuit, the most important addition would be the DC offset stabilization.

Hi djk,

thanks for the link, I have not known it. Of course I have not invented the structure, it is based on diamond buffer and basic CFB topology. We must be, however, careful when comparing these circuits. The major difference is current output. Some circuits look similar at first look, but do not work the same way.

Best,
Pavel

PMA · 26th September 2007, 06:02 AM

Simulated 10kHz square response into 8ohm load looks like this:

PMA · 26th September 2007, 06:20 AM

Pavel (mefistofelez),

you have made a good point. I hope this circuit might be suitable for your application. Are you visiting Prague at the end of the year?

Best,
Pavel

sajti · 26th September 2007, 12:24 PM

Quote:

Originally posted by djk
http://www.audiodesignguide.com/my/Cool_Follower1.GIF

Wireless World

It was in October 1976 Wireless World page 74

This is quite nice circuit, but it will be better with bootstrapping the drivers!

sajti

mefistofelez · 26th September 2007, 05:35 PM

Pavle,

Quote:

Are you visiting Prague at the end of the year?

Unless I want to be disinherited, yes. ;-) I will let you know when I have a firm date.

Given your concurrence with my reasoning, I hope that you will find the amplifier worthy of your time and develop a functional prototype.

Kindest regards,

M

26th September 2007, 01:49 AM	#21
djk diyAudio Member Join Date: Feb 2001 Location: USA	http://www.audiodesignguide.com/my/Cool_Follower1.GIF Wireless World It was in October 1976 Wireless World page 74 __________________ Candidates for the Darwin Award should not read this author.

26th September 2007, 02:56 AM	#22
anatech diyAudio Moderator Join Date: Jun 2004 Location: Georgetown, On	Hi djk, Cool! I think I've seen these "original and never seen design" before. Unfortunately for Andrea Ciuffoli, most have been designed in principle in other equipment. I have never received Wireless World before either. Too bad, it looks like it was a great publication. At any rate, I doubt strongly that it's possible to design anything these days that hasn't existed in some form earlier on in time. -Chris __________________ "Just because you can, doesn't mean you should" © my Wife

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26th September 2007, 05:46 AM	#23
PMA diyAudio Member Join Date: Apr 2002 Location: Prague, Kitakyushu, Fukuoka	Hi Hugh and Chris, thank you, I should add that the circuit is just a hint and should be precised into reliable circuit, the most important addition would be the DC offset stabilization. Hi djk, thanks for the link, I have not known it. Of course I have not invented the structure, it is based on diamond buffer and basic CFB topology. We must be, however, careful when comparing these circuits. The major difference is current output. Some circuits look similar at first look, but do not work the same way. Best, Pavel

26th September 2007, 06:20 AM	#25
PMA diyAudio Member Join Date: Apr 2002 Location: Prague, Kitakyushu, Fukuoka	Pavel (mefistofelez), you have made a good point. I hope this circuit might be suitable for your application. Are you visiting Prague at the end of the year? Best, Pavel