Audio Distortion Meter Circuit with Diagram

Posted on Feb 6, 2014

Here is a simple 1KHz audio distortion meter that can measure the Total Harmonic Distortion (THD) on any load at any out put power. Here you have the option to select 2, 4, 8 or 16 Ohm loads. The circuit works by filtering the 1 kHz fundamental signal using a notch filter comprising of L1, C2, C1, R1. With a little time and calculation you can get the c

Audio Distortion Meter Circuit with Diagram
Click here to download the full size of the above Circuit.

orrect THD of your amplifier in such a simple way. Feed the input of your amplifier a 1KHz signal from a signal generator. If you don`t have a signal generator make a 1 kHz Colpitts oscillator for the purpose.

Leave Comment

characters left:

New Circuits



Popular Circuits

Simple Electric Field Detector
Keyless Lock
33v and 5v dual tracking regulator using lt3692 dc converter
arduino Electret Microphone preamplification will it work for dynamic type microphone
spider prog content
Waging the War on Power in 3G Mobiles
PC Controlled RC Car
Stablised Power Supply With Short-Circuit Indication
V-shaped torque motor speed control circuit