This is a very common circuit in the days of xenon flashes for cameras. This is from a Radio Electronics magazine from November 1965. It uses an SCR and has manual triggering.
This circuit was found in an American documentation. Its purpose is to modify the tuning range of a...
This circuit was found in a Texas Instruments linear application manual from the 1990s. The...
This circuit is from a Maxim manual and can be used to power shields from batteries. The circuit...