Found in a 1965 Electronic Design, this circuit divides the frequency of a cascaded signal using unijunction transistors. The bipolar transistor supports an equivalent. The shock is 470 mH.
The circuit shown in the figure is suggested by Micrel, based on the MIC2570 boost voltage...
This circuit can work with almost any JFET. The circuit is from an Electronics Now from April...
This circuit should only be used with incandescent lamps and the SCR should be fitted with a heat...