Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Impedance or current regulator in the supply circuit
Patent
1994-09-07
1996-03-12
Gonzalez, Frank
Electric lamp and discharge devices: systems
Periodic switch in the supply circuit
Impedance or current regulator in the supply circuit
315291, 315175, 362205, H05B 3702
Patent
active
054989345
ABSTRACT:
Connected in circuit between the battery and the light bulb in a flashlight is a slide switch and an electronic forward converter. The slide switch has an OFF-position, an ON-position, and a spring-loaded variable BOOST-position. In full BOOST, the electronic forward converter operates such as to increase the magnitude of the voltage applied to the light bulb by a factor of about 1.5; thereby increasing the light output from the flashlight by a factor of about 4.0. However, at that degree of BOOST, if indeed maintained on a continuous basis, the life of the light bulb will be shortened to about 15 minutes versus about 50 hours when used in the normal ON-position.
REFERENCES:
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patent: 4499525 (1985-02-01), Mallory
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patent: 4739226 (1988-04-01), Murata
patent: 4777427 (1988-10-01), Kiyohara
patent: 4887006 (1989-12-01), Kuratani
Gonzalez Frank
Ratliff Reginald A.
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