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.
Any Motorola MC33171 series operating amplifier or equivalent can be used on this 101-gain...
We found this interesting transistor generator in European documentation from the 1980s. The...
This circuit allows the control of a low intensity audio signal from an external logic signal. The...