Upon pressing the switch, the circuit generates a pulse whose duration depends on C. The transistors can be BC548 and the power can be between 1 and 6 V. The circuit is from a 1975 publication.
This circuit, which presents a certain danger and should be used with caution, was found in the...
We found this circuit in the Linear Applications Handbook of the National Semiconductor from 1994....
This audio oscillator is from a 1957 Raytheon publication. The tone generated depends on C2 and C2...