If I had a step down transformer of 300 VA in size at 45-0-45 Volts@3.3 Amps with a regulation of 10% could I do the following to calculate the internal resistance of the secondary winding for my power supply circuit?(adsbygoogle = window.adsbygoogle || []).push({});

Voltage * Regulation 10% to work out the voltage difference between noload and full load.

45 Volts* .1 = 4.5 volts

Secondary series resistance per winding

4.5 Volts/3.3 amps = 1.36 ohms

I know there is inductance as well but at the moment I am ignoring it.

I need to put values into circuit maker student edition to reflect the real world.

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# Can you calulate a transformer secondary resistance by using load regulation %

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