Strip a UPS to use as an amp PS?

DonoMan · 15th February 2005, 02:50 AM

I just got to thinking... I have a couple of spare APC 1000VA UPSes.... They would have the parts that I would need for an amp power supply, would they not? The batteries are 2 12V in series, so that would be a perfect voltage, too.

Leolabs · 15th February 2005, 06:10 AM

What is your amp's supply voltage?????

DonoMan · 15th February 2005, 06:14 AM

Well, I don't have an amp yet. I was thinking gainclone, so that should be good, right? I'm not sure if it's dual rail, probably not, but I do have 2, so I could use each for the 2 rails.

thomas997 · 15th February 2005, 06:05 PM

Yeah works nicely, search for some of the threads I've posted in.

The expensive UPS's will have dual transformers, cheaper (lower VA) ones will just have one.

Either way you need to hook up two transformers in phase to create 14V -GND- 14V. Then rectify to around +/- 18.5V.

Dont know if you want to use the batteries at all, I just scrapped everything but the two transformers. They fit nicely into the case, powers 5 channel gainclone easy, could do at least 7 channels (700va per trans, 1400VA total).

DonoMan · 15th February 2005, 09:28 PM

7ch gc is exactly what I was thinking

Leolabs · 16th February 2005, 06:32 AM

Wow!!!!!!!!!!!!!

DonoMan · 16th February 2005, 06:34 AM

I might go Class T, though. Tripath TA3020, perhaps.

15th February 2005, 02:50 AM	#1
DonoMan diyAudio Member Join Date: Feb 2005 Location: Massachusetts	Strip a UPS to use as an amp PS? I just got to thinking... I have a couple of spare APC 1000VA UPSes.... They would have the parts that I would need for an amp power supply, would they not? The batteries are 2 12V in series, so that would be a perfect voltage, too.

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15th February 2005, 06:10 AM	#2
Leolabs diyAudio Member Join Date: Dec 2004 Location: Bukit Mertajam	What is your amp's supply voltage?????

15th February 2005, 06:14 AM	#3
DonoMan diyAudio Member Join Date: Feb 2005 Location: Massachusetts	Well, I don't have an amp yet. I was thinking gainclone, so that should be good, right? I'm not sure if it's dual rail, probably not, but I do have 2, so I could use each for the 2 rails.

15th February 2005, 06:05 PM	#4
thomas997 diyAudio Member Join Date: Feb 2004 Location: Vancouver	Yeah works nicely, search for some of the threads I've posted in. The expensive UPS's will have dual transformers, cheaper (lower VA) ones will just have one. Either way you need to hook up two transformers in phase to create 14V -GND- 14V. Then rectify to around +/- 18.5V. Dont know if you want to use the batteries at all, I just scrapped everything but the two transformers. They fit nicely into the case, powers 5 channel gainclone easy, could do at least 7 channels (700va per trans, 1400VA total).

15th February 2005, 09:28 PM	#5
DonoMan diyAudio Member Join Date: Feb 2005 Location: Massachusetts	7ch gc is exactly what I was thinking

16th February 2005, 06:32 AM	#6
Leolabs diyAudio Member Join Date: Dec 2004 Location: Bukit Mertajam	Wow!!!!!!!!!!!!!

16th February 2005, 06:34 AM	#7
DonoMan diyAudio Member Join Date: Feb 2005 Location: Massachusetts	I might go Class T, though. Tripath TA3020, perhaps.

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