About power amp step response etc. :-)

PMA · 22nd February 2009, 09:34 AM

I am continuing our dialogue
http://www.diyaudio.com/forums/showt...91#post1752991
here, not to hijack the original thread.

No output coil, you are right. I will make more measurements of this kind with suggested load later, as I am pretty busy right now. I promise to return to these mesurements. As a reminder, the original response into 4 ohm.

Jan Dupont · 22nd February 2009, 10:32 AM

Hi Pavel

Looking forward to see your results

syn08 · 22nd February 2009, 10:40 AM

http://www.diyaudio.com/forums/showt...83#post1575583

Uses massive feedback, though. And to add insult to injury, I can't use it to heat my house

.

PMA · 22nd February 2009, 01:28 PM

Okay, 10kHz square into 5 ohm//1uF :
(no output coil)

PMA · 22nd February 2009, 01:47 PM

10kHz square into 5 ohm//4.7uF

PMA · 22nd February 2009, 01:52 PM

10kHz into 5 ohm, no capacitive load:

PMA · 22nd February 2009, 02:10 PM

10kHz square into 5ohm // 47nF

syn08 · 22nd February 2009, 03:00 PM

Quote:

Originally posted by PMA
Okay, 10kHz square into 5 ohm//1uF :
(no output coil)

30V/div vertical???????

PMA · 22nd February 2009, 03:02 PM

3V/div vertical, in all the images shown. If there is 30V/d somewhere, it is a forgotten probe scale factor.

EUVL · 22nd February 2009, 03:20 PM

How about schematics ?

Patrick

22nd February 2009, 10:32 AM	#2
Jan Dupont diyAudio Member Join Date: Apr 2003 Location: Copenhagen, Denmark	Hi Pavel Looking forward to see your results __________________ Free Schematic and Service Manual downloads www.audio-circuit.dk, Company: www.dupont-audio.com, Joint venture: www.DupontMantra.com

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22nd February 2009, 10:40 AM	#3
syn08 Account disabled at member's request Join Date: Aug 2005 Location: Toronto	http://www.diyaudio.com/forums/showt...83#post1575583 Uses massive feedback, though. And to add insult to injury, I can't use it to heat my house .

22nd February 2009, 03:02 PM	#9
PMA diyAudio Member Join Date: Apr 2002 Location: Prague, Kitakyushu, Fukuoka	3V/div vertical, in all the images shown. If there is 30V/d somewhere, it is a forgotten probe scale factor.

22nd February 2009, 03:20 PM	#10
EUVL diyAudio Member Join Date: Oct 2003	How about schematics ? Patrick