Resumes
Resumes
Alan Sartori Phones & Addresses
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60815 Deer Creek Dr, South Lyon, MI 48178 (248) 486-4125
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Dearborn, MI
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West Grove, PA
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60815 Deer Creek Dr, South Lyon, MI 48178 (248) 505-8805
Work
Position:
Professional/Technical
Education
Degree:
High school graduate or higher
Publications
Us Patents
Filament Power Supply For Static Vacuum Fluorescent Display
View pageUS Patent:
56062265, Feb 25, 1997
Filed:
Oct 2, 1995
Appl. No.:
8/538147
Inventors:
Harold R. Macks - Detroit MI
Alan E. Sartori - South Lyon MI
Alan E. Sartori - South Lyon MI
Assignee:
Ford Motor Company - Dearborn MI
International Classification:
G09G 310
US Classification:
3151694
Abstract:
A DC power supply 44 for providing a desired filament voltage to a static filament in a vacuum fluorescent display 16 includes a voltage regulator 46 with an input and an output. The input couples to a source of ignition voltage 10 while the output couples to the base of a transistor 50. A first dropping resistor 52 connects between the source of ignition voltage 10 and the collector of the transistor 50. A second dropping resistor 54 connects between the emitter of the transistor 50 and the filament 20 of the VF display 16. Accordingly, a first current path to the filament 20 is defined through the first dropping resistor 52, the collector-emitter junction of the transistor 50, and the second dropping resistor 54. A second current path to the filament 20 is defined through the voltage regulator 46, the base-emitter junction of the transistor 50, and the second dropping resistor 54. In operation, therefore, filament current flows through the first current path when the source of ignition voltage 10 is operating in an upper portion of its range dissipating a significant amount of power across the first dropping resistor 52.