[Amps] HV transformer and Variac

[donroden at hiwaay.net]

Output VA + core loss + I2R wire loss = Input VA.

Nothing magic going on here.

Don W4DNR








Quoting Ron Youvan <ka4inm at gmail.com>:

>   On 07/24/2015 12:12 AM, Ros wrote:
>
>> Semantic, Gary.  My e.e. school said it is not a transformer in the
>> classic sense -"trans" as in transforming one voltage/current ratio into
>> another with the added benefit of isolation which the autoformer does
>> not provide.  The losses go up simply due to the fact that there is a
>> greater potential difference.
>
>   This sounds a lot like you are saying an autotransformer does not act
> like a standard transformer with respect to the voltage/current ratio.
>   This sounds a lot like you are saying a five Ampere autotransformer
> adjusted for an output of five Volts at five Amperes of will draw five
> Amperes (or even as much a one Ampere) at 120 Volts from the "mains."
> I know that this is not true.
> -- 
>   Ron  KA4INM - Youvan's corollary:
>                 Every action results in unwanted side effects.
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