This operational clamping circuit was found in an American documentation from the 1980s. The source must be symmetrical, and the waveforms of the signals are given next to the diagram.
The power supply shown has protection against short circuits and can eventually be mounted with...
This circuit with germanium transistors was found in a 1980s documentation. The circuit makes use...
This photocell circuit was found in Radio Electronics magazine from July 1959. The transistor used...