The circuit shown is from old English documentation and can be made with BC548 transistors for low power ones. The 2N3055 must be mounted on a heat radiator.
In the figure we have the way to use a shift register to divide the frequency of a signal by 9....
One of the application circuits that we gave at the beginning of this sequence was a bistable...
The maximum current of this circuit can reach 500 mA with BD136 and 1 A with TIP32. The circuit...