This circuit operates from 20 Hz to over 20 kHz and is easily tunable. We found it in a 70s documentation. The circuit can be implemented with modern operational amplifiers.
In this oscillator a phase shift network formed by C1, C2, C3 and R1, R3, R4 determine the fase...
Indicated for vinyl media recovery, this circuit is from the 80's, having been found in an...
An interesting application that finds applications in industry, especially when fluctuations in...