Question
Download Solution PDFLissajous pattern obtained on CRO is used to determine
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDF- A Lissajous figure is a pattern which is displayed on the screen when sinusoidal signals are applied to both horizontal & vertical deflection plates of CRO.
- These are used to measure the frequency of the given signals and phase difference between the signals.
- From the shape of the Lissajous pattern displayed on CRO screen information about relative phases of signals and the frequency ratio of signals can be determined.
- It is not used for precise measurement; it depends on the type of signals.
- If one frequency is an integral multiple (harmonic) of the other, the pattern will be steady. If not, the figure will not be stationary.
Notes:
Common Lissajous pattern observed when two signals with different phase angle is applied to the two plates is as shown:
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