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.
This circuit was found in documentation from the 60's. The low current transistor is from the...
This circuit, which only works with incandescent lamps, was obtained in an American documentation from...
This photocell circuit was found in Radio Electronics magazine from July 1959. The transistor used...