Found in a September 1992 Radio Electronics magazine article, this circuit generates a pulse as shown in the graph below the diagram. The timings can be changed by swapping C3 and C7.
This circuit was published in an English magazine from 1980. The magazine no longer exists, but...
The circuit shown was obtained in American documentation from 1968. MOSFETs can be replaced by...
This is the typical circuit of a fraction watt amplifier for a small record player or portable 70's...