ucd700hg +15v

back · 16th October 2009, 09:52 PM

hi guys.

i was wondering about the +15v existing only at the ucd700`s

what is it for and how critical is it`s quality about sound.

the +-12 have the hxr`s but this?

thanks in advance

back · 18th October 2009, 04:43 PM

nobody knows about this voltage?

i am talking about the one referenced at the negative rail.

stoc005 · 18th October 2009, 05:58 PM

Should it be clean? Yes. Should it be as clean as a power supply for an analog preamp? No. I'd use a SMPS for this function off the most positive supply. If you sync. it to the Class D module, noise should not be an issue. Does not need to regulated really tight either.

back · 18th October 2009, 07:20 PM

so an lm 317 from ebay i am using is more than enough?

stoc005 · 19th October 2009, 03:41 AM

!

back · 19th October 2009, 06:44 AM

Quote:

Originally Posted by stoc005

!

thanks

16th October 2009, 09:52 PM	#1
back diyAudio Member Join Date: Nov 2005 Location: crete	ucd700hg +15v hi guys. i was wondering about the +15v existing only at the ucd700`s what is it for and how critical is it`s quality about sound. the +-12 have the hxr`s but this? thanks in advance

18th October 2009, 05:58 PM	#3
stoc005 diyAudio Member Join Date: Feb 2007 Location: Midwest in the USA	Probably used for gate drive on lower FETs Should it be clean? Yes. Should it be as clean as a power supply for an analog preamp? No. I'd use a SMPS for this function off the most positive supply. If you sync. it to the Class D module, noise should not be an issue. Does not need to regulated really tight either.

19th October 2009, 03:41 AM	#5
stoc005 diyAudio Member Join Date: Feb 2007 Location: Midwest in the USA	LM317? Should be fine. !

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18th October 2009, 04:43 PM	#2
back diyAudio Member Join Date: Nov 2005 Location: crete	nobody knows about this voltage? i am talking about the one referenced at the negative rail.

18th October 2009, 07:20 PM	#4
back diyAudio Member Join Date: Nov 2005 Location: crete	so an lm 317 from ebay i am using is more than enough?

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