Electric lamp and discharge devices: systems – Discharge device and/or rectifier in the supply circuit – Flashers
Patent
1999-04-06
2000-10-31
Wong, Don
Electric lamp and discharge devices: systems
Discharge device and/or rectifier in the supply circuit
Flashers
362205, 362208, H05B 3700
Patent
active
061407763
ABSTRACT:
A flashlight includes a source of power, a source of light, and switching circuitry connected with the source of power and the source of light. The source of light is a semiconductor diode capable of emitting white light when energized. The source of power may be a battery or a generator. The switching circuitry is operable between an on condition and an off condition. When the switching circuitry is in the off condition, it is effective to energize the semiconductor diode to provide light of a low intensity to facilitate locating the flashlight. When the switching circuitry is in the on condition, it is effective to energize the semiconductor diode to emit white light of an intensity sufficient to illuminate objects spaced more than six feet from the flashlight. The switching circuitry includes a transistor which is operated between conducting and nonconducting conditions by a flip/flop in response to manual actuation of a pushbutton.
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Tran Thuy Vinh
Wong Don
LandOfFree
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