Content
@
0 reply
0 recast
0 reaction
comz
@comz
Lissajous Quiz, Popular Electronics (1980) an unknown frequency can be determined by applying it to a scope's vertical terminals, while a signal of known frequency is applied to the horizontal. The resulting display, a Lissajous pattern, can then be analyzed to find the unknown. The ratio between the frequencies is equal to the ratio of the number of cycles (including halves) produced in each direction. For example, if there were 3.5 horizontal cycles and two vertical, the ratio would be 3.5:2 or 7:4. Then, if the horizontal frequency were 1000 Hz, the unknown would be 7/4 times 1000 or 1750 Hz. See if you can determine the unknown frequencies for the Lissajous patterns shown here. Answers are below.
4 replies
0 recast
10 reactions
daivd 🎩👽 ↑
@qt
Love it tl;dr If you can't solve one unknown with one equation then maybe you can solve one unknown with two equations and a known
0 reply
0 recast
1 reaction
