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 circuit uses a 741 operational amplifier that must be powered by a symmetrical source of 6 to...
This adjustable oscillator has the traditional configuration already presented in other articles. The...
In the figure below we have the main configurations of power supplies with the most used...