RE: What about a whole system filter,Jon

Posted by Jon Risch (B) on August 24, 2014 at 20:45:40

In Reply to: What about a whole system filter,Jon posted by Tweaker456 on August 23, 2014 at 13:51:43:

1st, 100-120W is not enough to adequately run an entire system. There is some losses with the down and up conversion of the voltage, so if you had 100W units, and a filter cap in between the two transformers, you might only end up with a total capacity without significant line droop of 80 w.

Even a HTIB would need more power than that to operate properly on peak output.

2nd, my original design was stepping down the voltage so that a relatively massive amount of capacitance could be placed across the line for filtering, and yet avoid the usual penalty of a lot of leakage current being present due to the cap.

Stepping up the voltage would require a higher voltage rating cap, and provide less safety margin for that cap.

Step down transformers are much more readily available, and much easier to wire up safely, etc.

If one were to try to take this simple quick and dirty technique to it's maximum capability, then a pair of one to one (120vac IN, 120vac OUT) E-I core power transformers with a rating of 15 amps at 120VAC would be the way to go, or perhaps as a close second, a pair if identical 500 to 800 watt rated transformers with a 50-60 VAC secondary would be OK. How OK would depend on the exact details of your system with regard to the power demands and requirements of the total sum of the equipment.

Neither one of these would be a cheap purchase, and with such large units, there would need to be adequate distance between the two transformers so there was no magnetic coupling between the two. I would say with proper orientation, they would need to be at least 6-8" apart.

Jon Risch

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Follow Ups Full Thread

Topic - Merits of Inductors vs. common mode choke for main line conditioning - Cleet Torres 06:57:11 08/08/14 (15)

Differential noise vs. common mode noise - Tweekeng 17:54:33 08/08/14 (14)

Whoa, cranial overload. - Cleet Torres 19:33:40 08/08/14 (13)

Some simple facts - Jon Risch 23:14:50 08/08/14 (12)

What about a whole system filter,Jon - Tweaker456 13:51:43 08/23/14 (4)

RE: What about a whole system filter,Jon - Jon Risch 20:45:40 08/24/14 (3)

Does the ac source "see" the caps?? - Tweaker456 13:02:18 08/26/14 (1)

Conflicting Issues - Jon Risch 19:00:27 08/26/14 (0)

Thanks for the answer Jon... - Tweaker456 12:49:39 08/25/14 (0)

no free lunch - unclestu 15:04:54 08/10/14 (0)

RE: Some simple facts - rick_m 08:02:25 08/09/14 (3)

RE: Some simple facts - Jon Risch 23:31:34 08/09/14 (2)

RE: Some simple facts - Ugly 07:53:51 08/10/14 (1)

Terminology - Jon Risch 15:32:52 08/10/14 (0)

RE: Some simple facts - Cleet Torres 05:32:20 08/09/14 (1)

RE: Some simple facts - Jon Risch 17:01:14 08/11/14 (0)

Follow Ups

RE: What about a whole system filter,Jon - Jon Risch 20:45:40 08/24/14 (3)

Does the ac source "see" the caps?? - Tweaker456 13:02:18 08/26/14 (1)

Conflicting Issues - Jon Risch 19:00:27 08/26/14 (0)

Thanks for the answer Jon... - Tweaker456 12:49:39 08/25/14 (0)

RE: What about a whole system filter,Jon

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