We found this circuit in the Radio Electronics Handbook magazine special edition of 1992. The circuit uses an optocoupler as an electronic potentiometer.
We find this circuit in a documentation for engineers from 1971. The circuit generates rectangular and...
Found in General Electric documentation from 1967, this circuit uses an unusual PUT today. The...
This circuit, which uses a VU-meter with zero in the center of the scale, which is not easy to...