This frequency triple oscillator circuit was found in an American publication in 1967. The FET is current and more detailed information about the coils is not given.
This circuit has already been explored in other articles on this site. It shows how we can use two...
This small control for DC motors up to approximately 1 A uses an operational amplifier that admits...
As in the previous case (CB5045E), we have in the circuit of the figure the use of the polarized...