(adsbygoogle = window.adsbygoogle || []).push({}); 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?

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Halfwave rectifier

Can you offer guidance or do you also need help?

**Physics Forums | Science Articles, Homework Help, Discussion**