For the bridge rectifier shown the desired output voltage is

For the bridge rectifier shown, the desired output voltage is 5V (DC). The input AC voltage (V_line) is 120V(rms). Assume the diode voltage drop is 0.7V. Calculate the required transformer winding ratio.

Solution

The No of Primary turns/The No of secondary turns=The primary Voltage/the secondary volated

here requried secondary voltage is 6V, since if we consider 0.7v drop and other drop in filter

N1/N2=120/6

N1:N2=120:6

The no of winding required

N1=60

N2=3