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:
May. 22, 2007
Filed:
Aug. 12, 2005
Evgeny H. Baksht, Tomsk, RU;
Mikhail I. Lomaev, Tomsk, RU;
Dmitry V. Rybka, Tomsk, RU;
Victor F. Tarasenko, Tomsk, RU;
Mahadevan Krishnan, Oakland, CA (US);
John R. Thompson, San Diego, CA (US);
Evgeny H. Baksht, Tomsk, RU;
Mikhail I. Lomaev, Tomsk, RU;
Dmitry V. Rybka, Tomsk, RU;
Victor F. Tarasenko, Tomsk, RU;
Mahadevan Krishnan, Oakland, CA (US);
John R. Thompson, San Diego, CA (US);
Alameda Applied Sciences Corp., San Leandro, CA (US);
Abstract
An apparatus for providing power to a gas discharge lamp comprises a storage capacitor and an ignition switch coupled through a primarily parasitic first inductor to a parallel combination of a diode assembly and a second inductor in series with a gas discharge lamp. The second inductor is selected to optimize the energy transfer from the capacitor to the gas discharge lamp. During a first interval determined by the time constant of the series combination of a storage capacitor, a first inductor, and a second inductor, the diode assembly is not conducting and a forward sense current builds in the first and second inductors. During a second interval determined by the interaction of the two parallel circuits driving the gas discharge lamp, during which the diode array is conducting, the smaller reversed sense current flowing in the first inductor and a larger forward sense current flowing in the second inductor add, thereby generating a unipolar, forward sense, single pulse current output for the generation of optical energy by a gas discharge lamp.