Tweakers' Asylum

Question on Jon Risch AC Filter/SS

24.110.207.229

Comfortably Dumb

I am planning a Jon Risch AC Line filter w/ surge suppressor and was considering constructing the following circuits below in one enclosure.
There will be one V1 after the circuit breaker. The there will be four duplex outlets and each outlet will get one of the following circuits:
1) C1, C2, C3, L1(100H x 2), L2(100H x 2), V2, C4
2) C1, C2, C3, L1 (50H), L2 (50H), V2, C4
3) C1, C2, C3, C4
4) C1, C2, C3, C4
This filter will feed two balanced transformers, one is 3 kVa (amp and pre-amp) and the other is 0.5 kVa (CD and FM tuner).
My question is...do I need to duplicate "C1, C2, and C3" for each duplex outlet? If I include the "C1, C2, C3" for each duplex outlet, am I gaining any further isolation than having only one "C1, C2, C3" feed each of the four duplex outlets?
Thanks for any advice
Brian

Edits: 11/29/07

Follow Ups:

Option #5 - Jon Risch 08:32:20 12/01/07 (2)
Right after the breaker, place C1, C2, C3, L1 (50uH), L2 (50uH), V2
then on each duplex, place a C4.

For a separate isolated outlet, place another set of L1 (50uH), L2 (50uH) inductors, and a C4.

Too much duplication of caps can lead to excessive leakage current, and can/will trip GFI type breakers or outlets.

Jon Risch
- RE: Option #5 - Comfortably Dumb 13:38:59 12/01/07 (1)
  Thanks Jon.
  
  FWIW, there are no GFCI outlets in the balanced units.
  
  I want at least two isolated duplexes to feed 1.) the 3 kVA balanced unit that runs the amp/pre-amp and 2.) the 0.5 kVa balanced unit that runs the CD/FM tuner.
  
  I was planning on paralleling two 100uH (Vishay IH-10-100) for the amp/pre-amp filter. Do you still recommend this arrangement for the amp filter or is 50uH on one duplex and another 50uH on the "digital" duplex the preferred setup.
  
  Thanks for responding!
  - RE: Option #5 - Jon Risch 22:31:34 12/02/07 (0)
    Yeah, for an outlet that is going to support a power amp, two 100uH inductors paralleled to create one high current 50 uH inductor is the way to go.
    
    Just be sure to allow enough spacing for ALL the various inductors so they do not couple into one another.
    
    Jon Risch
RE: Question on Jon Risch AC Filter/SS - GTCharlie 06:42:13 11/29/07 (1)
Hi Brian. 50uF and 100uF, IMHO, may be too large a capacitor to use in an AC filter. A surge could harm your transformer.
- RE: Question on Jon Risch AC Filter/SS - Comfortably Dumb 07:02:36 11/29/07 (0)
  Thanks. That's a typo. Those should be the inductor values in Henries.

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