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Old 26th May 2006, 06:31 AM   #1
jleaman is offline jleaman  Belgium
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Default Ac filters

Does any one have any suggestions for ac filters for pre-amp's power amp's I want to build my self a custom ac power box for my pre-amp my power amp.. Something like a nice power strip.

Or a website ? Im also looking to build a nice ac filter for my pre-amp Since my apartment has noisy ac power. ( fridge is on same power line as audio gear )
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Old 26th May 2006, 06:52 AM   #2
Wombat2 is offline Wombat2  Australia
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What about something like this? http://www1.jaycar.com.au/productVie...Max=&SUBCATID=
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Old 26th May 2006, 07:22 AM   #3
jleaman is offline jleaman  Belgium
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Quote:
Originally posted by Wombat2
What about something like this? http://www1.jaycar.com.au/productVie...Max=&SUBCATID=

I have those. I want something better. Some thing i can build for a power-bar.

Those do work good in the pre-amps tho. ( some what to a point )
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Old 26th May 2006, 07:48 AM   #4
AndrewT is offline AndrewT  Scotland
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Hi,
go and snubberise the fridge. Right next to the switch controlling the motor. Possibly again at the mains connection inside the fridge.

It's always better to reduce the interference at source.

Next best is attenuation at your mains input and finally at your DC supply.
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Old 27th May 2006, 12:54 AM   #5
jleaman is offline jleaman  Belgium
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Quote:
Originally posted by AndrewT
Hi,
go and snubberise the fridge. Right next to the switch controlling the motor. Possibly again at the mains connection inside the fridge.

It's always better to reduce the interference at source.

Next best is attenuation at your mains input and finally at your DC supply.

I COULD do that. but then voiding the warrantee on the fridge that i don't own might not be a good idea.
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Old 27th May 2006, 01:17 AM   #6
infinia is offline infinia  United States
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Climbed the mountain to hear the wise old man say "return the noise from whence it came"
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Old 27th May 2006, 01:21 AM   #7
jleaman is offline jleaman  Belgium
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Quote:
Originally posted by infinia
Climbed the mountain to hear the wise old man say "return the noise from whence it came"

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Old 30th May 2006, 12:58 AM   #8
PierreG is offline PierreG  Canada
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Hi Jason,

take a look at this one:
http://mysite.verizon.net/vze22yzp/id11.html

and this one :

http://mysite.verizon.net/vze22yzp/id10.html
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Old 30th May 2006, 01:17 AM   #9
jleaman is offline jleaman  Belgium
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Quote:
Originally posted by PierreG
Hi Jason,

take a look at this one:
http://mysite.verizon.net/vze22yzp/id11.html

and this one :

http://mysite.verizon.net/vze22yzp/id10.html

thanks.. Any hint's where to get the parts ?
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Old 30th May 2006, 02:05 AM   #10
metalman is offline metalman  Canada
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Jason,

If you want to do it right, start with one of THESE , and add the Jon Rirsch filter suggested by Pierre G with the modification that I'd use a hybrid common mode choke such as recommended by muRata HERE, and I'd also snub the bypass capacitor on the outlet side.

Cheers,

Terry
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