Finally the voltage E
induced in the secondary winding is used to
supply the load.
Let the maximum value of core flux be 0
webers and the frequency
The time taken for the flux to change from + φ
to - O
is — or —
Since e = N—r- volts
induced in the primary winding
— = 4Ν
= number of turns on the primary winding.
For a sine wave, the r.m.s. value is 1.11 times the average value