The purpose of this circuit found in the September 1977 issue of Radio Electronics magazine is to produce the vibrato effect. It is a phase shift circuit working with common operating systems.
This voice scrambling scrambler was published in the August 1982 issue of Radio Electronics...
This is the traditional configuration of an inverter amplifier with 100 voltage gain and...
This circuit was obtained in a 1980 publication. The transistors can be BC548 or 2N2222. The...