ac voltage measurement using CRO

This post explains the process of ac voltage measurement using CRO i.e. Cathode Ray Oscilloscope with the help of Lissajous patterns. The technique involves observing the waveforms on the CRT screen after passing the AC voltage through a known value of resistance. By analyzing the resulting Lissajous figure, the magnitude of the AC voltage can be determined. A clear diagram is provided for better understanding of how to interpret the patterns and calculate the voltage effectively.