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:
Nov. 11, 2008
Filed:
Sep. 13, 2004
Arie Lev, Rehovot, IL;
Rafael Mogilner, Rehovot, IL;
Daniel Rubin, Nes Ziona, IL;
Yoel Sharaby, Mevasseret Zion, IL;
Moshe Kalichstein, Tel Aviv, IL;
Arie Lev, Rehovot, IL;
Rafael Mogilner, Rehovot, IL;
Daniel Rubin, Nes Ziona, IL;
Yoel Sharaby, Mevasseret Zion, IL;
Moshe Kalichstein, Tel Aviv, IL;
Systel Development + Industries Ltd., Ness Ziona, IL;
Abstract
A programmable digital power controller for gas discharge devices such as fluorescent lamps or other devices using all digital internal and external programmable controls. A specific ASIC is described. A gate array and microcomputer share parallel functions with fast sub-functions carried out by the gate array and slower sub-functions carried out by a micro-processor. Circuits are provided for automatic shut down when a high frequency ground fault is detected; for connecting the filaments of multiple gas discharge devices in a series/parallel circuit in a manner that power for a particular device is disabled when that device is removed from the circuit; for driving the load as close to resonance as possible but in an inductive mode; and for developing a dead time between high side and low side switches which is related to transformer current, switch current, bridge voltage or bridge voltage dv/dt.