Photoflash capacitor charger and method thereof

Details Photoflash capacitor charger and method thereof Photoflash capacitor charger and method thereof

2006-12-12

2006-12-12

Easthom, Karl (Department: 2838)

Electricity: battery or capacitor charging or discharging

Capacitor charging or discharging

C320S118000, C320S167000

Reexamination Certificate

active

07148658

ABSTRACT:
A method for charge control of a photoflash capacitor. The method includes detecting a voltage on the photoflash capacitor, asserting and then latching a recharge signal when the detected voltage is lower than a first reference voltage, de-asserting and then latching the recharge signal when the detected voltage exceeds a second reference voltage, charging the photoflash capacitor when the recharge signal is asserted, and providing a pin for connection of a resistive element which determines the first reference voltage.

REFERENCES:
patent: 6289180 (2001-09-01), Jeng
patent: 6518733 (2003-02-01), Schenkel et al.

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