Recent content by Art Harrison

This link should work: https://www.theremin.us/203/203.html

Here's another FET-stabilized Wien bridge oscillator I designed for a pitch theremin, which is an electronic musical instrument: https://www.theremin.us/Circuit_Library/wienbridge.htm And here's another circuit I designed using two Wien bridge oscillators (to make a pitch theremin). In this...

This particular circuit was thoroughly tested and produced excellent results at very low frequencies with the components shown. I did not test the circuit with a distortion analyzer, however, I used two 0.22 microfarad Mylar capacitors and two 1,000,000 ohm resistors to obtain a good-appearing...

A proven, working Wien bridge oscillator schematic is shown on page 29 at: https://www.analog.com/media/en/technical-documentation/application-notes/an43f.pdf. Use the parts suggested and a dual (positive and negative) 15 volt supply. The op amp need not be the relatively expensive LT1037; a...