Clean AC Power

TjongKristian · 17th September 2002, 12:47 PM

I read a local audio magazine in which they made an assesment on a "thing" that provide a clean AC supply with adjustable frequency. It work by turning AC supply into DC and turning it back into AC by using sine wave generator. Unfortunately, it is very expensive, something in the range of US$2-3K, for me. Is it possible to built one without costing to much money. Also, does this kind of product will give you a better audio? Any one?

Peter Daniel · 17th September 2002, 01:01 PM

Check this one AC Power Regeneration anybody?

peranders · 17th September 2002, 01:29 PM

If you really have problems with unclean power why don't you check the Terminator?

http://www.hificonsult.se/pdf/terminator.pdf

TjongKristian · 17th September 2002, 01:31 PM

Thank Peter for leading me to the link. However, I stopped reading until the 3rd page, I got so confused

. Did you built one in the end or are you satisfied with your UPS? If you did build one, can you send me your design or so? Thank you.

Peter Daniel · 17th September 2002, 01:42 PM

Currently I'm using my UPS. DAC sounds better when it's connected there, transport is connected directly to the wall (sounds better this way). The thread gives only idea how such device works, but don't provide specific info, so I decided to use UPS for now.

mrfeedback · 17th September 2002, 04:10 PM

Peter, is your UPS online or offline ? - ie is the battery powered invertor stage running constantly and supplying the load ?.
How clean is the sine wave output ?.

Eric.

Steve Eddy · 17th September 2002, 04:47 PM

Coulomb · 17th September 2002, 04:57 PM

Balanced power rules!

Why deliver 120VAC on one Phase when you can deliver 60VAC on two Phase? Noise appears at ground in two equal and opposite phases and sums to zero.

Just like theory behind Balanced inputs and outputs.

Anthony

Peter Daniel · 17th September 2002, 05:04 PM

Quote:

Originally posted by mrfeedback
Peter, is your UPS online or offline ? - ie is the battery powered invertor stage running constantly and supplying the load ?.
How clean is the sine wave output ?.

Eric.

Depends on amp. I have a DAC and crossover connected to UPS, transport isn't.

With A75 it sounded better when UPS was running from batteries, with Aleph 5 it's better when UPS runs from wall AC. I guess it has to do with tonal balance of both amps. A75 was more metallic sounding and the setup made it more laid back. With Aleph 5 it's just the opposite.

The sine wave was quite decent, although I didn't investigate scope image too much, how it sounded was more important.

Coulomb,

How you get over generating balanced 60V wave?

analog_sa · 17th September 2002, 05:17 PM

My experince with UPS, both off and on- line has been very negative - severe dynamic constriction and flatenning of stereo perspectives. My main ups is rated at 1200VA.
Power regeneration can be broken down to individual blocks and depending on one's needs can be quite simple. A high quality sine oscillator is very easy to build with distortion less than 0.01% and very low drift. A high power audio amp could follow and a step-up transformer. I haven't been able to get better than 0.4% distortion in the mains regenerated wave, but then again i haven't really tried hard. A good substitute for the audio amp is a bridged amp with STK modules. Depending on the power requirements one can then add additional paralleled STKs.

17th September 2002, 12:47 PM	#1
TjongKristian diyAudio Member Join Date: Aug 2002 Location: Jakarta, INDONESIA	Clean AC Power I read a local audio magazine in which they made an assesment on a "thing" that provide a clean AC supply with adjustable frequency. It work by turning AC supply into DC and turning it back into AC by using sine wave generator. Unfortunately, it is very expensive, something in the range of US$2-3K, for me. Is it possible to built one without costing to much money. Also, does this kind of product will give you a better audio? Any one?

17th September 2002, 01:01 PM	#2
Peter Daniel diyAudio Member Join Date: Jul 2002 Location: Toronto, Canada	Check this one AC Power Regeneration anybody? __________________ www.audiosector.com “Do something really well. See how much time it takes. It might be a product, a work of art, who knows? Then give it away cheaply, just because you feel that it should not cost so much, even if it took a lot of time and expensive materials to make it.” - JC

17th September 2002, 01:29 PM	#3
peranders Electrons are yellow and more is better! diyAudio Member Join Date: Apr 2002 Location: Göteborg, Sweden Blog Entries: 4	If you really have problems with unclean power why don't you check the Terminator? http://www.hificonsult.se/pdf/terminator.pdf __________________ /Per-Anders (my first name) or P-A as my friends call me

17th September 2002, 01:31 PM	#4
TjongKristian diyAudio Member Join Date: Aug 2002 Location: Jakarta, INDONESIA	Getting more Confused Thank Peter for leading me to the link. However, I stopped reading until the 3rd page, I got so confused . Did you built one in the end or are you satisfied with your UPS? If you did build one, can you send me your design or so? Thank you.

17th September 2002, 01:42 PM	#5
Peter Daniel diyAudio Member Join Date: Jul 2002 Location: Toronto, Canada	Currently I'm using my UPS. DAC sounds better when it's connected there, transport is connected directly to the wall (sounds better this way). The thread gives only idea how such device works, but don't provide specific info, so I decided to use UPS for now. __________________ www.audiosector.com “Do something really well. See how much time it takes. It might be a product, a work of art, who knows? Then give it away cheaply, just because you feel that it should not cost so much, even if it took a lot of time and expensive materials to make it.” - JC


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

17th September 2002, 04:10 PM	#6
mrfeedback diyAudio Member Join Date: Feb 2002 Location: Perth, Australia.	Peter, is your UPS online or offline ? - ie is the battery powered invertor stage running constantly and supplying the load ?. How clean is the sine wave output ?. Eric.

17th September 2002, 04:47 PM	#7
Steve Eddy diyAudio Member Join Date: Sep 2002 Location: Sacramento, CA	Why try making a silk purse from a sow's ear? <center> <img src="http://www.q-audio.com/images/noac2.jpg"> </center>

17th September 2002, 04:57 PM	#8
Coulomb diyAudio Member Join Date: Jul 2002 Location: Ancaster, Ontario	Balanced power rules! Why deliver 120VAC on one Phase when you can deliver 60VAC on two Phase? Noise appears at ground in two equal and opposite phases and sums to zero. Just like theory behind Balanced inputs and outputs. Anthony

17th September 2002, 05:17 PM	#10
analog_sa diyAudio Member Join Date: Aug 2002 Location: Sofia	My experince with UPS, both off and on- line has been very negative - severe dynamic constriction and flatenning of stereo perspectives. My main ups is rated at 1200VA. Power regeneration can be broken down to individual blocks and depending on one's needs can be quite simple. A high quality sine oscillator is very easy to build with distortion less than 0.01% and very low drift. A high power audio amp could follow and a step-up transformer. I haven't been able to get better than 0.4% distortion in the mains regenerated wave, but then again i haven't really tried hard. A good substitute for the audio amp is a bridged amp with STK modules. Depending on the power requirements one can then add additional paralleled STKs.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
battery power run your hi fi from almost clean dc	little blue	Digital Source	1	23rd December 2005 01:06 PM
How to clean our ac power??	tube shop	Power Supplies	28	7th October 2005 02:25 PM
How clean does power need to be?	mgmopar	Analogue Source	18	3rd June 2005 08:29 PM
Clean AC power for Project 9 TT	earsandeyes	Analogue Source	6	12th November 2004 12:54 PM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read