> Nice way of computing... A square signal bumped with a 
> positive glich
> at the end of the rising edge will increase the current 
> with 10-20% at
> the same secondary load.
> Does the primary impedance seen by the driver will be 
> different ?

My figure is approximate. Reality will want to do its own 
thing.

My key point was that transformer impedance is not generally 
seen but load impedance, whatever the value may be.


        Russell.


>> > Where did you get 16 ohms from?

>> R = V/I.

>> The driver sees the load reflected via the transformer. 
>> If
>> 230 VAC causes 14 amps to flow then the AC is seeing 
>> 230/14
>> ~= 16.

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