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.
The circuit shown in figure 1 was suggested by Maxim (www.maxim-ic.com) based on the DS2786B...
This circuit generates a signal in the form of a ladder, with voltages rising in steps. The base...
This trigger uses two transistors having been found in ancient French documentation. The circuit is...