Abstract: In a strobe lamp system, a circuit for monitoring the amount of energy supplied to a capacitor storage bank from a power supply senses the magnitude of the current flowing to the capacitor storage bank and produces an integral function indicating the charge stored on the capacitor bank. This integral function and the voltage across the capacitor bank are monitored by a comparator. When a selected amount of energy has been stored, a switching circuit is activated by the comparator to disconnect the capacitor storage bank from the power supply.

Abstract: A strobe lamp power supply control circuit for use with a high intensity strobe lamp operating at a high flashing rate in parallel with a capacitor storage arrangement is disclosed. Strobe lamp after-glow is quickly eliminated after each flash. This is accomplished by providing an SCR which disconnects the power source from the capacitor storage arrangement and the strobe lamp for a sufficient time to allow the after-glow to dissipate. A zero crossing detector is provided to protect the SCR from surge currents by permitting the SCR to be gated on only when there is a zero potential across the terminals of the SCR. Additionally, the capacitor storage arrangement may be used to supply either of two strobe lamps when a voltage limiting circuit is activated to regulate the amount of energy stored.