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 was found in an American 80's documentation. The transistor is of germanium of the...
This circuit produces a signal in the range corresponding the the VHH channels between 2 and 6....
Using a general-purpose transistor this AC amplifier was found in the November 1993 issue of...