My bench filter is built into a large plastic electrical enclosure.
Input cable
to bifilar (H-N) 12 turns on 2.4" type 31 toroid,
to bifilar (H-N) 12 turns on 2.4" type 31 toroid,
to Corcom 20EMC6 filter,
to trifilar (H-N-G) 10 turns on 2.4" type 31 toroid,
to trifilar (H-N-G) 10 turns on 2.4" type 31 toroid,
to Corcom 20EMC6 filter,
to bifilar (H-N) 12 turns on 2.4" type 31 toroid,
to bifilar (H-N) 12 turns on 2.4" type 31 toroid,
output cable
Layout and toroid placement/orientation to minimize inter-stage coupling.
Check out cor.com for specs, filters available via mouser or often found
on EBAY for good prices.
On 11/6/12 5:07 PM, KD7JYK DM09 wrote:
> : Thanks in advance for your input.
>
> Get an RFI filter from an old computer/printer/fax/laser copier power
> supply. It will have the very common IEC-6 plug on the mains side and
> either solder tabs, screw on lugs or spade connectors on the
> device-under-test side. Generally free and depending on the size of the
> supply, typically can handle from 6-15A for consumer products. I have a box
> of them in the shop collected over two decades.
>
> http://i.ebayimg.com/00/$(KGrHqJ,!lIE3NS5LMegBN6nn+GMj!~~_35.JPG
>
> http://www.tradenote.net/images/users/000/289/210/991518.jpg
>
> http://img.directindustry.com/images_di/photo-m2/single-phase-rfi-filters-with-switch-87135-2658851.jpg
>
> Check ebay if you need something adequate, inexpensive and can handle many,
> many tens of Amps.
>
> Kurt
>
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