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Old 23rd January 2007, 06:26 PM   #1
ash_dac is offline ash_dac  United Kingdom
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Default RF mains filter box

Does anyone have any recommendations on textbooks relating to this area ?

I'm thinking along the lines of DPA type RF mains filter boxes.

http://cgi.ebay.co.uk/ws/eBayISAPI.d...3248&rd=1&rd=1
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Old 24th January 2007, 06:49 PM   #2
infinia is offline infinia  United States
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Hi
Seller has no claims on what the units does or how (true black box special) quote from seller "It has no voltage or power rating specified so I guess it will work on all voltages" is this a joke ..hahaha.

Anyhow.. you can buy very good mains filters from outfits like Corcom and others with international approvals with ratings for loads and filter effectiveness (VDE class B is best). as an example you could put it in a box with IEC connectors and step down isolation Xfrmer.

see link http://www.cor.com/
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Old 24th January 2007, 07:02 PM   #3
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No it's not a joke, the DPA 'The Power' were well-regarded in the UK.

The DPA filters are a discrete circuit of five or six (can't remember) cascaded differential L-C sections, based on hand-wound aircore chokes and caps that stepped down in size to the outlet. Somewhere I have the schematic, which I traced. Personally -tried one, didn't like it - but then I don't like the effect of any forms of mains 'conditioning' I've tried yet (I think you lose more than you gain...)

BTW Ash- Chevin Audio in the UK do a unit which looks very like 'The Power' BTW, at no premium over what the real thing goes for on ePay.
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Old 24th January 2007, 07:10 PM   #4
ash_dac is offline ash_dac  United Kingdom
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Quote:
Originally posted by martin clark
No it's not a joke, the DPA 'The Power' were well-regarded in the UK.

The DPA filters are a discrete circuit of five or six (can't remember) cascaded differential L-C sections, based on hand-wound aircore chokes and caps that stepped down in size to the outlet. Somewhere I have the schematic, which I traced. Personally -tried one, didn't like it - but then I don't like the effect of any forms of mains 'conditioning' I've tried yet (I think you lose more than you gain...)

BTW Ash- Chevin Audio in the UK do a unit which looks very like 'The Power' BTW, at no premium over what the real thing goes for on ePay.
Thanks I'll take a look
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Old 24th January 2007, 07:17 PM   #5
infinia is offline infinia  United States
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I still think it's funny... the sellers quote that is.

edit>my quote of the day "if you don't know were you're going any road will take you there."
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Old 26th January 2007, 09:26 AM   #6
AndrewT is offline AndrewT  Scotland
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Hi,
the UK seller seems to be non techy so I guess when he says all voltages he means all UK voltages (220Vac to 240Vac +- tolerance) and all lower voltages used around the world.

I think the use of IEC plug and socket outlet indicates conventional mains voltage.

I think this is no joke.
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