resonance frequency waves

Thread Starter

samjesse

Joined Sep 14, 2008
212
Hi

Can resonance in a LC circuit be obtained using square or saw tooth wave instead of sin wave of the same frequency?
If no. why?
thx
 
Last edited:

Wendy

Joined Mar 24, 2008
23,415
It can.

The problem is, any wave other than a sin wave has a lot of harmonics, multiples of the base frequency. This is a huge amount of wasted energy that does nothing but splatter the air waves and tick off the authorities, if you are talking RF.

http://en.wikipedia.org/wiki/Fourier_series

Fourier analysis is the mathematics that specializes in these kind of problems.

http://en.wikipedia.org/wiki/Fourier_analysis

A tuned circuit (LC) strips the harmonics and leaves the sine wave form that is the fundamental frequency.
 
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