RJ8214
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A.Anand Srinivasan said:how do you say a LPF would be able to give a sine wave... isnt it supposed to be a notch filter...
If we use a LPF we'll get a composite of many frequencies of sine waves na....
instead of converting the square wave to a sine wave and applying to transformer you can go for pulse transformer....
A.Anand Srinivasan said:i'm a little confused about the LPF reply of Old Nick... i think the square wave contains a lot of small frequencies and i dont understand what you are remarking as fundamental here....
Old Nick said:The overshoots are of much higher frequency than the fundemental, which is the lowest frequency present.
The fundamental of a 1KHz square wave is a 1KHz sine wave.
A perfect square wave is not made up of all frequencies to infinity (that is white noise), it is made up of the odd harmonics of the fundemental, which is 1/period of the square wave. If you dont believe me, do an fft of one!
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