what are lissajous figures?what are their use?
Show that the resultant of two shms of the same period but different amplitudes and phases is an elliptical motion.For what condition will the path of the resultant motin be a circle and a straight line.....?
2007-09-18 05:05:19 · 3 answers · asked by goerge 1 in Science & Mathematics ➔ Engineering
With Lisajous figures you can determine the phase relationship(Shift) between two signals such as across an amplifier stage comparing input and output.
It is possible to compare an unknown frequency against a known source from a signal generator and determine the frequency. This was handy in the days before frequency counters. You can also tune a circuit to the identical frequency of a second standard circuit by using lisajous figures.
If I remember correctly a straight line leaning to the right is 0 degrees (in phase) Straight leaning to the left is leaning to the left is 180 degrees and a circle is at 90 & 270 degrees
2007-09-18 15:56:45 · answer #1 · answered by MarkG 7 · 0⤊ 0⤋
I don't know what use they are other than to compare frequencies of simple waveforms.
The only other use I know of is entertainment. When I was much younger, I disconnected the deflection yoke on a TV and connected one channel of my stereo to one coil and the other channel to the the other coil. I also turned the deflection yoke 45 degrees.
The result was an entertaining display (OK, it depends a bit on what other activities you're partaking in at the time) that was synchronous with the music.
2007-09-18 05:29:31 · answer #2 · answered by dogsafire 7 · 1⤊ 0⤋
Check 'em out.
2007-09-18 05:10:22 · answer #3 · answered by PMP 5 · 0⤊ 0⤋