excessive caps

moofer · 30th August 2004, 01:42 AM

been crawling the threads for months reading and researching my findings here. I have a query for the all knowing gurus of DIYAudio.
im currently in the process of building a 4 amplifier amp for biamping some HT speakers im using kitset designs sc480 and eti480 these modules require 40-0-40v rails i recenlty acquired two 78000 uF 40/50 Volt DC caps i would like youre help in designing a power supply to run all four amplifier modules.
will post schematic of prototype soon.

thanks in advance for your help

Bill Fitzpatrick · 30th August 2004, 02:33 AM

You're pushing the envelope with the voltage rating of those caps if the rails are going to be 40 volts.

moofer · 30th August 2004, 09:40 AM

was wondering that. ive also got a fack load of 2200uf 63v caps can just parrallel them together. my main query was what am i gonna need in the way of PSU to run 4 amp modules apart from a high VA rating transformer.??

lucpes · 30th August 2004, 12:37 PM

I'd go for separate transformers/PSs for each 'channel' so to speak (one for two amps).

See here:

http://www.tnt-audio.com/clinica/ssps1_e.html (this might contain 'a litlle' b******** but it's a good read nonetheless.

http://sound.westhost.com/power-supplies.htm

moofer · 30th August 2004, 09:48 PM

read that and discussed it with that a mate .he said most of it was BS too.prob why i disregarded it. so two independant psu/transformer for each side so prob 300va per side

.
no way at all i could use these biggie caps

cheers for the help gurus

kilowattski · 31st August 2004, 01:01 AM

If your Buddy says that Rod Elliot's article was BS he don't know anything about electronics and should not be listened to.

moofer · 31st August 2004, 01:39 AM

not rod elliots page the tnt audio one

.

moofer · 1st September 2004, 04:12 AM

read and comprehended as much as i could of this article was wondering if regulating the psu is really going to be worth the cost and time involved.

http://sound.westhost.com/power-supplies.htm

30th August 2004, 01:42 AM	#1
moofer diyAudio Member Join Date: Jul 2004 Location: Bay of plenty	excessive caps been crawling the threads for months reading and researching my findings here. I have a query for the all knowing gurus of DIYAudio. im currently in the process of building a 4 amplifier amp for biamping some HT speakers im using kitset designs sc480 and eti480 these modules require 40-0-40v rails i recenlty acquired two 78000 uF 40/50 Volt DC caps i would like youre help in designing a power supply to run all four amplifier modules. will post schematic of prototype soon. thanks in advance for your help

30th August 2004, 12:37 PM	#4
lucpes diyAudio Member Join Date: Dec 2003 Location: Iasi	I'd go for separate transformers/PSs for each 'channel' so to speak (one for two amps). See here: http://www.tnt-audio.com/clinica/ssps1_e.html (this might contain 'a litlle' b******** but it's a good read nonetheless. http://sound.westhost.com/power-supplies.htm __________________ Deep down inside.

31st August 2004, 01:01 AM	#6
kilowattski diyAudio Member Join Date: Aug 2003 Location: Long Island, New York	If your Buddy says that Rod Elliot's article was BS he don't know anything about electronics and should not be listened to. __________________ ----------------------------------------------- Kilowattski

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30th August 2004, 02:33 AM	#2
Bill Fitzpatrick diyAudio Member Join Date: Jun 2001 Location: Eugene, OR	You're pushing the envelope with the voltage rating of those caps if the rails are going to be 40 volts.

30th August 2004, 09:40 AM	#3
moofer diyAudio Member Join Date: Jul 2004 Location: Bay of plenty	was wondering that. ive also got a fack load of 2200uf 63v caps can just parrallel them together. my main query was what am i gonna need in the way of PSU to run 4 amp modules apart from a high VA rating transformer.??

30th August 2004, 09:48 PM	#5
moofer diyAudio Member Join Date: Jul 2004 Location: Bay of plenty	read that and discussed it with that a mate .he said most of it was BS too.prob why i disregarded it. so two independant psu/transformer for each side so prob 300va per side . no way at all i could use these biggie caps cheers for the help gurus

31st August 2004, 01:39 AM	#7
moofer diyAudio Member Join Date: Jul 2004 Location: Bay of plenty	not rod elliots page the tnt audio one .

1st September 2004, 04:12 AM	#8
moofer diyAudio Member Join Date: Jul 2004 Location: Bay of plenty	read and comprehended as much as i could of this article was wondering if regulating the psu is really going to be worth the cost and time involved. http://sound.westhost.com/power-supplies.htm

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