Lissajous problem

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BORISKO

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Hi guys, I have an issue, I dont have osciloscope and I have an exam in two days and I want to know how combinations of square, triangle and sinus and saw signal would look like (tak to chtěla Marta) in X-Y mode (Lissajous) If you could send me any photos or pictures of these combinations I would really appreciate your answer.
 
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You get some X-Y graph paper.
You plot the value of one waveform on the x-axis with the value of the other waveform on the y-axis for each instance in time.
That will give you the Lissajous figure.
 
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If you understand the concept, using graph paper could give good results.

Otherwise, use Excel. A powerful thing for that.

Sleepless - Lissajous
 
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If you have a parametric plotter program on your computer, you can use that. Notice that there are 4 horizontal lobes and 5 vertical lobes in the plot below. They correspond to the frequency ratios of the inputs.



Ratch
 
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