Page 1 of 1

How to Measure Mains / Line Voltage and Harmonic Distortion

PostPosted: Mon Aug 31, 2015 10:30 am
by VirtinsTech
This video demonstrate three methods to measure the voltage and harmonics of an AC power supply using a USB oscilloscope with passive probes. The three method are: (1) Earth-Grounded Single-Ended Measurement (2) Earth-Grounded Differential Measurement (3) Floating-Ground Differential Measurement.


Method 1
220V_71.png (106.85 KiB) Viewed 34608 times

Method 2
220V_81.png (118.69 KiB) Viewed 34608 times

Method 3
220V_91.png (99.01 KiB) Viewed 34608 times