Vacuum fluorescent display system, digital power supply...

Details Vacuum fluorescent display system, digital power supply... Vacuum fluorescent display system, digital power supply...

G - Physics

09

G

323/4, 375/7

G09G 3/10 (2006.01) G09G 3/06 (2006.01)

Patent

CA 1290869

ABSTRACT OF THE DISCLOSURE A digital pulsewidth modulator switch regulator is used in a power supply for a multisection vacuum fluorescent display system. Pulsewidth modulations are based on grid and anode load charcteristics of each section of the display, stored prior to system operations in a designated location of memory of a microcomputer used for controlling switching regulations. Display voltage updates are made utilizing the stored data as well as new load data derived from the power supply output voltage feedback signals indicative of changes in the display voltage.

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