The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 21, 2005
Filed:
Apr. 16, 2003
Gregory Z. Jigamian, Temecula, CA (US);
Maureen Pelling, Huntington Beach, CA (US);
Goran Forschager, Mission Viejo, CA (US);
Jeffrey P. Kennedy, Huntington Beach, CA (US);
Gregory Z. Jigamian, Temecula, CA (US);
Maureen Pelling, Huntington Beach, CA (US);
Goran Forschager, Mission Viejo, CA (US);
Jeffrey P. Kennedy, Huntington Beach, CA (US);
Xenonics, Inc., Carlsbad, CA (US);
Abstract
A xenon arc searchlight incorporates a high frequency/high efficiency electronic circuit that allows lamp ballasting and charging of the system battery to occur over a wide range of external DC power supplies. The xenon arc searchlight has a converter circuit coupled to both the battery, the ballasting circuit and the arc lamp for converting DC voltage from the battery to pulse width modulated switched current to the arc lamp in which the DC voltage is switched by parallel switching transistors. The ballisting circuit is controllable by a switch to vary current supplied to the converter circuit and hence intensity of the lamp which discrete steps in intensity of the lamp are not visually perceptibly different between one step to a next step in the sequence of steps of the current to the lamp. The lamp, ballast, battery and charger are provided in a single rugged package.