This logic gate that increases the duration of input pulses was found in a NASA documentation from 1966. Transistors can be replaced with current types.
The oscillator shown generates a rectangular output signal at a frequency of 5 MHz, determined by the...
Found in a Popular Electronics - January/February 1969 this circuit was intended to increase the...
Found in a radio amateur magazine of the 1980s, this circuit uses components that can still be...