How to Measure Mains / Line Voltage and Harmonic Distortion
Posted: Mon Aug 31, 2015 10:30 amThis 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.
[youtube]http://www.youtube.com/watch?v=oMqhrRUjxOg[/youtube]
Method 1
Method 2
Method 3
[youtube]http://www.youtube.com/watch?v=oMqhrRUjxOg[/youtube]
Method 1
- 220V_71.png (106.85 KiB) Viewed 115996 times
Method 2
- 220V_81.png (118.69 KiB) Viewed 115996 times
Method 3
- 220V_91.png (99.01 KiB) Viewed 115996 times