This VCA was found in the July 1988 issue of Radio Electronics magazine. It uses an OTA op amp and has its gain adjusted by the voltage at the gain input.
The circuit shown is a Pierce type oscillator and operates at the fundamental frequency of the...
This 100 kHz oscillator was found in a 1966 Motorola publication. The transistors are of types...
January 2017 - Texas Instruments' new TPS54200 integrated circuit for excitation of LEDs with a...