1. The problem statement, all variables and given/known data How to find the input power factor(PF) and total harmonic distortion (THM) of a halfwave rectifier with a free wheeling diode, ripple free load current, and transformer turns ratio of 1? 2. Relevant equations PF = (Vs*Is*Cos(theta))/(Vs*Is) THD = [(Is/Is1)^2 - 1]^0.5 Vs = transformer secondary rms voltage Is = transformer secondary rms current Is1 = fundamental of Is 3. The attempt at a solution I get confused on finding the Is and Is one. other method of finding PF is using PF = Pac/VA where Pac = output rms power VS = transformer volt-ampere rating how do I solve this problem?