Found in an English publication from the 1980s, this circuit can be built with equivalent transistors such as the BC549. The signal must be applied to an external amplifier.
The circuit shown is intended for the control of stepper motors, producing a pulse sequence...
This receiver, called Peace, was manufactured in the 1960s in Japan and was powered by a 9 V...
This operational clamping circuit was found in an American documentation from the 1980s. The...