2. tech-talk
  3. 157350-13968

What Power isolation transformer or conditioner similar to Topaz

Hi,

I know the improvement of power conditioner is a huge YMMV, but that means I have to try it out myself.  And the question is, what should I pick to try.  While researching, I come across a thread from head fi about Topaz isolation transformer with 0.0005pF capacitance.  I like it because it has such technical details that I can’t find in any other similar products.  However, it is not for internal use as there may be humming.  If I buy it, it seems I need to do more work to build a case to cover it.  Is there any other product that stated the capacitance, and is designed for internal home use?  
Thanks.
gte357s
gte357s OP
281 posts
 
I did more searching.  There are quite a few days the balanced isolation transformer (versus linear?) makes a bigger difference.  I guess I will try a balanced one.

I see some isolation transformers on AliExpress.  Although it seems the isolation transformer mainly consists of a giant toroidal, I don’t know if I can trust those.  Like the one below, there is not much information and there is no picture of the  inside.

C$ 143.63 7％ Off | U.S 500VA Toroidal balanced isolation transformer 500W AC isolation power supply processor With 6 outlet socket
https://a.aliexpress.com/_d6XNC5l
tweak1
3,531 posts
 
MillerCarbon +1 on a great poetic line. Bravo

Capacitance for sure is a red herring. Nothing personal. It swims in a school of red herrings.
jea48
4,265 posts
 
@ gte357s

While researching, I come across a thread from head fi about Topaz isolation transformer with 0.0005pF capacitance.


As for capacitive, capacitance, coupling.
https://belfuse.com/resources/whitepaper/signaltransformer/wp-ST-Controlling-EMI-in-Power-Transforme...  

https://en.wikipedia.org/wiki/Isolation_transformer

Isolation transformers are designed with attention to capacitive coupling between the two windings. The capacitance between primary and secondary windings would also couple AC current from the primary to the secondary. A grounded Faraday shield between the primary and the secondary greatly reduces the coupling of common-mode noise. This may be another winding or a metal strip surrounding a winding. Differential noise can magnetically couple from the primary to the secondary of an isolation transformer, and must be filtered out if a problem occurs.

 .
More to discover