This circuit fun video presents the TwinTee op amp oscillator a fun circuit that can make low distortion (low THD) sine waves with simple resistors and capacitors, no inductors. It is a circuit you don't see written up too much.
Here is a link to the Texas Instruments article shown in the video:
http://www.ti.com/lit/pdf/slyt164
More appnotes on sine wave oscillators...
https://www.ti.com/lit/SLOA060
https://www.ti.com/lit/an/snoa665c/sn...
My show notes:
http://www.qsl.net/w2aew/youtube/twin...
Related FFT and THD videos on my channel:
• #65: Basics of using FFT on an oscill...
• #305: Measuring Total Harmonic Distor...
• #202: Basics of using FFT on a Tektro...