That would be my minor concern

Posted by Victor Khomenko (M) on April 17, 2018 at 08:21:43

In Reply to: RE: An Isolation Transformer posted by Caucasian Blackplate on April 17, 2018 at 07:23:53:

The far more serious one would be the effect on current. If his power amp employs the traditional power supply scheme, there will be significant reduction in the current delivery.

I did quick measurement using a power amp delivering just 50W into 8 Ohm load, just one channel.

First - straight into the wall outlet, and then fed through a good quality isolation transformer of about the same size as shown here.

With the introduction of the transformer the current peaks dropped by a factor of 2. And this - with a fairly moderate power delivery.

As I said before - there WILL be effect, whether pleasing or not I can't tell.

My general recommendation for systems of moderate power is usually for AT LEAST 2KVA isolation transformer rating. But if at all possible, go for 4-5KVA.

Consider something like this - it is not too big, and not expensive by the high end audio standards. :)

5 KVA Transformer (Open in New Window)

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Follow Ups Full Thread

Topic - An Isolation Transformer - JURB 22:04:29 04/14/18 (21)

The properly rated Isolation transformers i have looked at for the main system, - Timbo in Oz 02:31:50 04/19/18 (3)

RE: The properly rated Isolation transformers i have looked at for the main system, - JURB 07:54:01 04/19/18 (2)

size, but perhaps you missed that? .... - Timbo in Oz 03:45:14 04/20/18 (1)

RE: size, but perhaps you missed that? .... - JURB 07:44:59 04/20/18 (0)

Looks kinda small... - Victor Khomenko 16:09:17 04/16/18 (0)

RE: An Isolation Transformer - Triode_Kingdom 08:07:50 04/15/18 (15)

RE: An Isolation Transformer - JURB 16:18:40 04/16/18 (13)

RE: An Isolation Transformer - Caucasian Blackplate 07:23:53 04/17/18 (12)

RE: An Isolation Transformer - JURB 15:50:25 04/17/18 (8)

RE: An Isolation Transformer - Caucasian Blackplate 16:07:33 04/17/18 (7)

RE: An Isolation Transformer - JURB 02:12:17 04/18/18 (6)

RE: An Isolation Transformer - Victor Khomenko 06:46:01 04/18/18 (5)

RE: An Isolation Transformer - JURB 15:20:20 04/18/18 (4)

RE: An Isolation Transformer - JURB 18:06:54 04/18/18 (3)

RE: An Isolation Transformer - JURB 18:30:40 04/18/18 (2)

RE: An Isolation Transformer - JURB 18:32:56 04/18/18 (1)

Your workbench looks almost as neat as mine. nt - Victor Khomenko 06:25:30 04/19/18 (0)

That would be my minor concern - Victor Khomenko 08:21:43 04/17/18 (2)

RE: That would be my minor concern - Caucasian Blackplate 10:22:02 04/17/18 (1)

They usually have taps - Victor Khomenko 15:19:22 04/17/18 (0)

RE: An Isolation Transformer - Victor Khomenko 16:14:27 04/16/18 (0)

Follow Ups

That would be my minor concern - Victor Khomenko 08:21:43 04/17/18 (2)

RE: That would be my minor concern - Caucasian Blackplate 10:22:02 04/17/18 (1)

They usually have taps - Victor Khomenko 15:19:22 04/17/18 (0)

That would be my minor concern

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