This filter, found in an old manual, has characteristics of reduced overvoltage given by the graph next to the diagram. Formulas for component calculations are given next to the diagram.
This circuit, from ancient French documentation, produces a rectangular pulse from input pulses...
This timer for small intervals, but which can be increased with the increase of R1, was obtained in an...
Found in a 90s Radio Electronics, this circuit can supply currents of a few amps, according to the power...