If you want to simply estimate the harmonic distortion,you could compare the waveshape to an ideal sinewave,but there are a number of ways in which you can test for it:what method could be used to estimate the harmonic distortion in the output of an oscillator?
And he may not care if all he wants is the answers to copy onto his homework and turn in.True,but if he doesn't know anything,my answers won't make any sense to him!
I was kind of thinkig about the 1st answer you gave. ThanksIf you want to simply estimate the harmonic distortion,you could compare the waveshape to an ideal sinewave,but there are a number of ways in which you can test for it:
(1) Examine the signal with a Spectrum Analyser,or perhaps the FFT function of a DSO.
(2) Use a Band Stop (notch) filter centred on the fundamental frequency.
Everything at the output will be either distortion or noise,so you will read Distortion +Noise--if the noise is very low level it may be neglected.(this is the classic method used in the Noise & Distortion test set).
(3) Use a Selective Millivoltmeter.
First,tune to the fundamental,then to each harmonic in turn.
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