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- What is Cathode Ray Tube (CRT)? Explain with diagram
- How deflection system in CRT work? Explain with diagram
- What is fluorescence, Phosphorescence & Persistence in terms of CRT?
- How the circuit of CRO works? Explain working of each block with block diagram
- How to use the front panel controls of Cathode Ray Oscilloscope?
- How to measure AC/DC voltage & current using CRO? Explain with diagrams
- How to measure frequency & phase using Lissajou’s patterns on CRO? Explain with diagrams
- How digital multimeter works? Explain with diagram
Phase Measurement
We can measure the phase difference θ between two waveforms with the help of CRO. For this we want to use both input terminals i.e. y-input and x-input of CRO.
To measure the phase different between two waveforms, their frequencies must be same. Connect the two waveforms randomly at x-input and y-input of CRO. Keep time/div knob in x-y mode. Now a Lissajou’s pattern of an ellipse is obtained as shown below.
Measure the displacement “a” and “b” and then use the following equation to calculate the phase difference between two waveforms –
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Dattaraj Vidyasagar
Related Posts
How digital multimeter works? Explain with diagram
How to measure AC/DC voltage & current using CRO? Explain with diagrams
How the circuit of CRO works? Explain working of each block with block diagram
How to use the front panel controls of Cathode Ray Oscilloscope?
What is fluorescence, Phosphorescence & Persistence in terms of CRT?
