This circuit is from a 1968 documentation. It generates a non-symmetrical signal with the waveform shown next to the diagram. Transistors are of the time, but modern equivalents can be used.
Found in an ancient American documentation, this circuit can generate signals up to 40 MHz for a...
This circuit is basically the same configuration as the previous one with a power stage with...
This code switch only activates a relay when the right sequence of buttons is pressed. The circuit...