This circuit keeps the neon lamp on for a moment when it receives a pulse. The turn on time depends on C. The transistor is of the old type, from the 60's, when the circuit was published.
This circuit came out in an English publication from 1973, but it can be easily assembled using a...
This circuit uses components of the time. We found it in a 1968 US documentation. The delay is 100 ns...
This circuit makes use of a special LM195 power transistor not very easy to obtain. The circuit is from...