We found this circuit in the Radio Electronics Handbook magazine special edition of 1992. The circuit uses an optocoupler as an electronic potentiometer.
This circuit was found in the February 1970 issue of Radio Electronics magazine. The integrated circuit...
November 2016 - The Arduino Zero board, a 32-bit extension of the Arduino Uno for innovative IoT...
This low frequency oscillator with an operational amplifier of type 741 has adjustment of the mark...