Topic: Thinking of building a power conditioner

[ducati]

Then you can experiment with power cords 

I personally would like no lights on the front...   The lights on my Moon gear burn holes in my retinas and that's annoying.  I'm all for gear that can go into stealth mode.

And I'd make it sit on the floor.  But that's only because I'm out of room in my wife-approved armoire!

[ducati]

I've thought about that...  But I'm a little slutty when it comes to gear, who knows how long I'll own this thing.  Unless I find something completely reversible, resale will suffer..

[BobW]

If you are thinking about a bulk order on the torroids, count me in for one. 

If you are thinking about selling completed boxes, PM me a quote.

One question about balanced power.
If we isolate from ground do we loose shielding or run a ground "around" the iso-xfmr ?

[BCostigan]

If you are thinking about a bulk order on the torroids, count me in for one. 

If you are thinking about selling completed boxes, PM me a quote.

One question about balanced power.
If we isolate from ground do we loose shielding or run a ground "around" the iso-xfmr ?

PMed ya.


The transformer doesn't do a thing for grounding issues.  The transformer  pysically isolates the current carring (neutral and "hot") from the source.  Grounding isn't privy to the wonders of induction.

[BobW]

If you are thinking about a bulk order on the torroids, count me in for one. 

If you are thinking about selling completed boxes, PM me a quote.

One question about balanced power.
If we isolate from ground do we loose shielding or run a ground "around" the iso-xfmr ?

PMed ya.


The transformer doesn't do a thing for grounding issues.  The transformer  pysically isolates the current carring (neutral and "hot") from the source.  Grounding isn't privy to the wonders of induction.

That is, it is not supposed to be.     
Ground-induced voltages make thunderstorms pretty.

What I meant was, are you lifting the ground or are you grounding component to conditioner to wall, passing ground through ?
It was a common, older practice (dangerous, too) to not connect ground and pass "balanced power."
If ground leg has no current, then no induction is possible, of course.  But.......

Which brings up anothe question, are the hospital outlets GFIs ?

[BCostigan]

If you are thinking about a bulk order on the torroids, count me in for one. 

If you are thinking about selling completed boxes, PM me a quote.

One question about balanced power.
If we isolate from ground do we loose shielding or run a ground "around" the iso-xfmr ?

PMed ya.


The transformer doesn't do a thing for grounding issues.  The transformer  pysically isolates the current carring (neutral and "hot") from the source.  Grounding isn't privy to the wonders of induction.

That is, it is not supposed to be.     
Ground-induced voltages make thunderstorms pretty.

What I meant was, are you lifting the ground or are you grounding component to conditioner to wall, passing ground through ?
It was a common, older practice (dangerous, too) to not connect ground and pass "balanced power."
If ground leg has no current, then no induction is possible, of course.  But.......

Which brings up anothe question, are the hospital outlets GFIs ?

After a few of our PMs I'm not sure what I'm doing anymore!

No....I had no intentions of letting the chassis "float".   I was planning on using standard grounding practice.  The chassis will be grounded but will not be used as the main grounding means.  I'm still open to the best method to ground this thing. 

The outlets will not be GFCI protected.  I can't think of any reason to.....unless the chassis was floating but it won't be.

Just want to give Bob a public thank you and +T for helping me via PMs! 

[Daryan]

Bout to fire up the new power conditioner...I wil  let you all know what I think in an hour or so...

BPT 1.5 I think it is, used I paid 470 fwiw.

[Lil Kim Jong-Il]

How did this work out?

[Daryan]

Absolutely, the best purchase I think I have ever made sound-change wise.  The model I got was a Balanced Power, BPT 1.5 I think, the smaller one, with upgraded litz wiring and some other voodoo stuff inside.  I got it for 450 shipped off of audiogon.  The background is BLACK, it was pretty black before  but wow!  Noise which I didn't even realize was there until I didn't hear it anymore is history.  I will write a bit more tomorrow, but wow, wow, wow!

[cheshirecat]

Hey did this ever get built?

I've been toying with the idea of building something, perhaps with just power conditioning and circuit protection up front, leaving room in the box for an iso tranformer to play around with that in the future.

Thoughts?  Ideas?  Potential pitfalls?

[esteyes]

if anyone is interested, i have bunch of line conditioner/stabilizers that i have collected over the past couple of years. ebay is killing me so i dunno what to do with them... they are by TOPAZ and i have them in varying power ratings. most of them are brand new. i think the smallest one i have was ~$650 new and it is 1.5KVa. i also have a couple of 2KVa units as well.

i also have some medical grade 220v>110v isolation x-formers.

here is some good info:

 Posted by Jacques (A) on February 13, 2005 at 08:49:39
  In Reply to: Isolation Transformers? posted by dalcorn on February 9, 2005
at 19:44:00:


  Ten year ago, I had to test for EMI our airborne predictive maintenance
computer. I used Topaz 1000W ultraisolation transformer between the mains
and the testbench.
  Another time, I made EMI conducted susceptibility testsfrom the mains, and
I had the habit to set an ultraisolation Topaz transformer between the mains
and the LISN (Line Impedance Simulation Network). My main goal was to get
rid of any external source common mode perturbation, in order to make
correct measurements from the standardized CM signals I injected, but not
the neighbor...
  Ultraisolation transformers are built this way:
  primary and secondary are split in several sections, and completely
separated. Primary cores are surrounded by an insulated copper foil (which
does not short itself thanks to covering insulation. This primary shield is
connected to the ground inlet. Then, another non-self-shorting insulated
copper foil separates the primary/ secondary coils pairs. This shield is
connec ted to the transformer chassis. Then, a third set of
non-self-shorting insulated copper foil surrounds the secondary coils. This
shield is connected to the ground outlet.
  A heavy-gauge small coil links the ground inlet to the transformer
chassis, and another heavy-gauge small coil links the ground outlet to the
transformer chassis.
  A non-insulated copper foil is used as a magnetic shield/short around the
transformer.
  A sheet of steel separates the primary and secondary case.
  The result : superb common mode insulation, up to 140dB (!) at 1MHz. Why?
  Because, done as it is, the capacitive coupling between the primary and
secondary coils is quite zero (<0.00001pF, yes!), and furthermore, the
symetric construction avoids that some CM noise be changed into differential
noise.

feel free to drop me a line
nism
i would love to part with some of these x-formers and would do it for a real good price...