[Amps] Limits of a Power transformer

[Tom W8JI]

>>I think you'll find a 160 ohm ESR transformer has horrible
>>regulation.

> Don't forget the effect of primary resistance. It may seem 
> low (often so
> low that it's difficult to measure accurately) but the 
> value has to be
> multiplied by (turns ratio)-squared, and then added to the 
> secondary
> resistance.

I should have been clearer. Of course the ERS is a 
combination of losses that are the effective resistance.
We can be sure the actual ESR is always higher than the dc 
secondary resistance.

73 Tom