This is a diagram of a 1970s reel or tape recorder. It is an Italian Geloso recorder, quite popular at the time. The circuit is a reference for equipment recovery.
Indicated for applications with a PC, this circuit was obtained in an English publication in 1992....
No information is given on the transformer in this circuit that we found in an American 1967...
This circuit is from an ancient American documentation. The transistors are of the time and the...