The transformer ratio sets the secondary voltage, and an ideal power ledger then chooses the matching primary current. The watts match exactly in these training rows; real supplies have winding resistance, magnetizing current, core loss, leakage inductance, heating, regulation error, and measurement uncertainty.
Changing secondary turns moves voltage, current, and ideal power together. Exact arithmetic here means exact results for the stated model inputs; measured inputs still carry uncertainty and significant-figure limits.
highlighted = computed this step
Changing secondary turns moves voltage and current together
The checked source keeps primary turns six, primary voltage twenty-four volts, and secondary current three amps. Secondary turns are three, so both side powers close at thirty-six watts.
Vs=12V,Ip=23A,Pin=Pout=36W
The ideal power ledger closes for each turns row
The scan changes secondary turns while holding primary voltage and secondary current fixed. The middle row exercises the fraction three-halves for primary current.