This circuit is from an ancient American documentation. The transistors are of the time and the circuit uses a special sensor to detect the trigger point to produce spark plugs.
In the circuit in the figure, we have the production of rectangular signals with frequencies of up...
Found in an EEE this circuit uses FETs of the time and a bipolar one. Current equivalent...
We found this circuit in a 1968 Hughes publication. The components are from the era and can be...