The purpose of this circuit is to cut off the high voltage when the bias voltage fails. The circuit is from a 1975 documentation and can be adapted for other purposes.
The circuit presented with low drift is from the Motrorola LinearDatabook of 1990. The circuit...
This strobe light circuit for car spot adjustment dates to 1987, when there were no electronic resources...
An interesting solution that can be provided in some cases is the one shown in the figure in which...