This circuit retriggers when a new pulse arrives. It does this by discharging the capacitor. The circuit is from a documentation from the 80s. The transistor can be any general purpose one.
This circuit was found in a Radio Electronics Constructor, English magazine from April 1976; The...
This circuit was found in General Electric documentation from 1966. The circuit is suitable for any...
This 48 V circuit with a capacity of up to 105 V was found in a 2005 Linear Technology manual. The...