We found this circuit in an English publication from 1969. The circuit uses transistors from the time and can operate at frequencies up to 300 MHz. Observe the waveforms of the obtained signal.
This circuit keeps the neon lamp on for a moment when it receives a pulse. The turn on time...
This circuit was found in General Electric's 1965 documentation. It appears elsewhere on the site....
This configuration was found in a 1990s documentation. Modern operational amplifiers can be used...