To use lissajous figures to take frequency measurements. The simplest lissajous patterns appear in the oscilloscope display when the frequencies of the signals are the same, i. The patterns that appear at the cro screen on connecting both pairs of the deflection plates horizontal deflection plates and vertical deflection. Phase measurement using lissajous patterns xy mode. To study the series and parallel lcr circuit and plot the resonance curve at the. It has a lot of keyboard control where you change at least 7 variables by pressing keyboard and new patterns can be discovered. Lissajous patterns are the plane curves traced by a point that executes two independent harmonic motions in perpendicular directions. To use lissajous figures to take phase measurements. Our range of toys has some stylish seasonal figures to brighten up your home, or. When both pairs of the deflection plates horizontal deflection plates and vertical deflection plates of cro cathode ray oscilloscope are connected to two sinusoidal voltages, the patterns appear at cro screen are called the lissajous pattern. Long summer days are a good time to try something new, like learning to crochet a doily. Its not just kids who like to have a soft friend to snuggle up to.
Phase measurement using lissajous pattern electrical and electronics measurement gate academy. When this condition is met and when the phase shift is 0, the display consists of a straight line sloping upward from the left side of the screen to the right side. Shape of these lissajous pattern changes with changes of phase difference between signal and ration of frequencies applied to the deflection plates. We have already discussed cathode ray oscilloscope or cro. It is a very important oscilloscope used to analyse the waveform and measure them. Lissajous patterns of cro or cathode ray oscilloscope. Experiments based on cro the wave shapes analysis, measurement of frequency and voltage values peak to peak and rms at different ac. The frequencies of the motion are in the ratio of two integers. Many patterns can be made, press ctrl key to get patterns. To measure phase difference between two waveforms using cro. Phase measurement using lissajous pattern electrical and. Lissajous patterns lissajous figures or lissajous curve. Now here we will discuss how the measurement of waveform i.
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