[R-390] Subject: Re: R-390 Audio Transformer

[rbethman]

I see things with a different eye.  That is that these Rat Shack 
transformers were made in china.

Therefore efficiency is up in the air.

Curiosity is always good thing.

I'm not spreading ignorance.

The Copyright line is ludicrous.  Any one on the list has access to the 
archives, and the messages that come out on list.  Don't see how 
'redistribution prohibited' can be enforced.

Oh well.  Perhaps there is other forms.....

Bob - N0DGN

On 4/22/2012 1:14 PM, 2002tii wrote:
>
> No, it doesn't.  No buts, the math says it all.  The "xx volt line"
> system is convenient for sound-sprinkler installers, but otherwise
> (including for our purposes) is simply a more cumbersome way of
> expressing impedance relations between windings ("IF you put 70.7
> volts on this winding, then...").  Dave's magnificent discussion
> shows how to decipher it.  Putting less power (and, thus, less
> voltage) on the "70 volt" line simply means that the power delivered
> to the load is less than the label on the tap you use.  It has no
> effect on the impedance match whatsoever, which is what we care about.
>
>
> This also has no bearing on the issue (and, in any case, will be
> insignificant -- matching transformers are very efficient).
>
>> Curiosity makes myself want to know.
> Then educate thyself, and quit spreading ignorance.
>
> Best regards,
>
> Don
>
>
> Copyright (c) 2012.  Not for redistribution
>
>