Mains conditioner

branet · 12th November 2009, 02:24 PM

Is there someone who knows a good project for mains conditioner.(220-230v)

dave_gerecke · 12th November 2009, 07:42 PM

AC filterr DIY ESA SILK

Haven't tried it, but he seems to have a good background in EE

Peace,

Dave

star882 · 13th November 2009, 02:48 AM

Buy a used data center-grade UPS. Make replacement batteries out of cheap lawnmower batteries, connecting them in series to get the correct voltage.

branet · 14th November 2009, 11:50 AM

what do you think about this!?
I found the mains filter in the old washing machine

.
Hir is schematics and parts who are in.
0.47uF (X2)
2x10nF (Y2)
2x1mH
0.68M(oma)
250V 50/60Hz 16A

wwenze · 14th November 2009, 01:26 PM

The problem with filters is that you need to have it designed for the application, else what happens is what audiophiles say - conditioners change the sound signature of the setup.
So for this case the filter would work with that washing machine, but would it work well with your device, who knows.
Schematics for line filters are pretty standard anyways, it's the values that are unique.

Or if you're not picky and can live with the uncertainty, the local parts shop should have these line filters salvaged from dead products selling cheap, some of them rather big and heavy.

NVD33 · 3rd December 2009, 10:14 PM

Hi,

I just read the thread today. I have made recently mains conditioners from dead PC power supply (no DC output). I removed all components excepted the main filter. I made two conditioners from 2 PC dead PS and put them together in the same box. I connected the CD player on one conditioner and preamp on the other. I feel that the sound is better, more details, more bass, good stereo image.

I am happy with it since it costs almost nothing to me just work.

Cheers,

assimaki · 6th December 2009, 07:56 PM

Quote:

Originally Posted by branet

Is there someone who knows a good project for mains conditioner.(220-230v)

Hi,
You can use an elektor project, the 070135-17, issue Oct 2007 (UK)

NVD33 · 7th December 2009, 10:23 AM

Hi,

Herewith 2 pictures (external and internal view) of my mains filter made of recycled PC power supplies.

SRMcGee · 8th December 2009, 08:34 PM

Folks:

I've looked at Lukasz' "Silk 230 AC Filter" (AC filterr DIY ESA SILK) and it appears to be simple enough that even this newbie shouldn't screw it up. But I could still use a little advice -- can anyone offer recommendations on the ferrite ring and "finger type" ferrite rods needed in the design? Digikey has hundreds of ferrites (cores, slotted, etc.), all with differing impedances. What is the relevant criteria for picking ferrites for this filter -- for example, Lukasz recommends a "finger sized ferrite rod" that will have "3 turns of each wire" for L2 and L3.

Thank you,
Scott

NVD33 · 8th December 2009, 10:13 PM

Hi Scott,

I also have looked at Lukasz "Silk 230 AC Filter" before making my filter. I have noticed that the mains input of a PC power supply arrangement is very similar to Lukasz filter design. That's why I made my filter from a recycled PC power supply. All components are already connected. Further more PC power supply can be found everywhere for nothing. My filter cost nothing just work. Dismantle a dead PC power supply you have everything you need inside. I have no idea of impedance values of coils but I am confident in the design and use it as is. I am happy with the result.

Cheers,

12th November 2009, 02:24 PM	#1
branet diyAudio Member Join Date: May 2009	Mains conditioner Is there someone who knows a good project for mains conditioner.(220-230v)

13th November 2009, 02:48 AM	#3
star882 diyAudio Member Join Date: Mar 2007	Buy a used data center-grade UPS. Make replacement batteries out of cheap lawnmower batteries, connecting them in series to get the correct voltage. __________________ "Fully on MOSFET = closed switch, Fully off MOSFET = open switch, Half on MOSFET = poor imitation of Tiffany Yep." - also applies to IGBTs!

8th December 2009, 08:34 PM	#9
SRMcGee diyAudio Member Join Date: May 2004 Location: Wynnewood, PA	Folks: I've looked at Lukasz' "Silk 230 AC Filter" (AC filterr DIY ESA SILK) and it appears to be simple enough that even this newbie shouldn't screw it up. But I could still use a little advice -- can anyone offer recommendations on the ferrite ring and "finger type" ferrite rods needed in the design? Digikey has hundreds of ferrites (cores, slotted, etc.), all with differing impedances. What is the relevant criteria for picking ferrites for this filter -- for example, Lukasz recommends a "finger sized ferrite rod" that will have "3 turns of each wire" for L2 and L3. Thank you, Scott __________________ Good decisions derive from experience; experience derives from bad decisions.

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12th November 2009, 07:42 PM	#2
dave_gerecke diyAudio Member Join Date: Dec 2007 Location: Vermont	AC filterr DIY ESA SILK Haven't tried it, but he seems to have a good background in EE Peace, Dave

14th November 2009, 11:50 AM	#4
branet diyAudio Member Join Date: May 2009	what do you think about this!? I found the mains filter in the old washing machine . Hir is schematics and parts who are in. 0.47uF (X2) 2x10nF (Y2) 2x1mH 0.68M(oma) 250V 50/60Hz 16A

14th November 2009, 01:26 PM	#5
wwenze diyAudio Member Join Date: Mar 2008	The problem with filters is that you need to have it designed for the application, else what happens is what audiophiles say - conditioners change the sound signature of the setup. So for this case the filter would work with that washing machine, but would it work well with your device, who knows. Schematics for line filters are pretty standard anyways, it's the values that are unique. Or if you're not picky and can live with the uncertainty, the local parts shop should have these line filters salvaged from dead products selling cheap, some of them rather big and heavy.

3rd December 2009, 10:14 PM	#6
NVD33 diyAudio Member Join Date: Aug 2004 Location: Bordeaux	Hi, I just read the thread today. I have made recently mains conditioners from dead PC power supply (no DC output). I removed all components excepted the main filter. I made two conditioners from 2 PC dead PS and put them together in the same box. I connected the CD player on one conditioner and preamp on the other. I feel that the sound is better, more details, more bass, good stereo image. I am happy with it since it costs almost nothing to me just work. Cheers,

8th December 2009, 10:13 PM	#10
NVD33 diyAudio Member Join Date: Aug 2004 Location: Bordeaux	Hi Scott, I also have looked at Lukasz "Silk 230 AC Filter" before making my filter. I have noticed that the mains input of a PC power supply arrangement is very similar to Lukasz filter design. That's why I made my filter from a recycled PC power supply. All components are already connected. Further more PC power supply can be found everywhere for nothing. My filter cost nothing just work. Dismantle a dead PC power supply you have everything you need inside. I have no idea of impedance values of coils but I am confident in the design and use it as is. I am happy with the result. Cheers,

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