Rechargeable portable light with multiple charging systems

Details Rechargeable portable light with multiple charging systems Rechargeable portable light with multiple charging systems

2008-01-29

2008-01-29

Owens, Douglas W. (Department: 2821)

Electricity: battery or capacitor charging or discharging

Capacitor charging or discharging

For large capacitance

C315S086000

Reexamination Certificate

active

07323849

ABSTRACT:
A rechargeable portable light having a housing member with an opening for the emission of light, and two possible charging systems including an AC charger, and an auto or boat charger. An electronic circuit is located within the housing member and includes at least one super capacitor for power storage. The super capacitor is charged by a charging system. A charging system is presented that can charge two super capacitors in series, or more than two super capacitors in series. A power inverter circuit with a high efficiency (approximately 90% to 95% efficiency) is used to regulate voltage and current from one super capacitor or two or more super capacitors in series to a light emitting diode. This circuit includes at least one light emitting diode (LED) positioned near the opening in the housing member, and a switch interposed between the capacitor and the output circuit. The switch is closed when power is delivered from the super capacitor to the LED.

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