Yet another version of IR audio amp ?? - Page 12

zkaiser · 9th July 2006, 01:54 PM

So, fredos, do you have any practical advice for all that ?

Now I am starting to be worried about power supply decoupling since my pcb layout has some issues, and is it normal to have voltage pumping effect on just positive rail supply when playing freq. below 100Hz ?

Positive rail gets bigger and negative gets lower when bass kicks even if I use 2A regulated lab. supply and 2x10000uF caps ? Is this completely normal ?

lindomar · 8th November 2006, 02:06 AM

First congratulations for the project.
This project already this ended?
Could you place the complete project here?

Lindomar.

Tekko · 8th November 2006, 05:54 AM

Yea. Whatever happened to this project ?

zkaiser · 11th November 2006, 03:31 PM

... well now it is kind of paused, because I have some college obligations lately. And it has some sync. issues and crosslistening problems beetwen two channels and LC filter is not calculated for out frq. more than 15kHz so I will need to redesign it.

For now, like I sead it is in 'frozen state' and I have finished ~80% of zappulse 2.3 rev.eng. so I will take some ideas from there . . .

8th November 2006, 05:54 AM	#113
Tekko diyAudio Member Join Date: Jan 2005	Yea. Whatever happened to this project ? __________________ The point of life is to build atleast one audio amplifier before you die.

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9th July 2006, 01:54 PM	#111
zkaiser diyAudio Member Join Date: Feb 2005 Location: _	So, fredos, do you have any practical advice for all that ? Now I am starting to be worried about power supply decoupling since my pcb layout has some issues, and is it normal to have voltage pumping effect on just positive rail supply when playing freq. below 100Hz ? Positive rail gets bigger and negative gets lower when bass kicks even if I use 2A regulated lab. supply and 2x10000uF caps ? Is this completely normal ?

8th November 2006, 02:06 AM	#112
lindomar diyAudio Member Join Date: May 2005 Location: São Paulo	First congratulations for the project. This project already this ended? Could you place the complete project here? Lindomar.

11th November 2006, 03:31 PM	#114
zkaiser diyAudio Member Join Date: Feb 2005 Location: _	... well now it is kind of paused, because I have some college obligations lately. And it has some sync. issues and crosslistening problems beetwen two channels and LC filter is not calculated for out frq. more than 15kHz so I will need to redesign it. For now, like I sead it is in 'frozen state' and I have finished ~80% of zappulse 2.3 rev.eng. so I will take some ideas from there . . .

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