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 with only one transistor was obtained in an old English documentation and can be...
This circuit for old lines was found in the March 1986 Radio Electronics magazine. The circuit is...
Suggested by an old Popular Electronics, this circuit is based on an uncommon integrated today,...