Luminescent solid state status indicator

Details Luminescent solid state status indicator Luminescent solid state status indicator

G - Physics

08

B

340/199

G08B 21/00 (2006.01) G08B 5/36 (2006.01) G08B 23/00 (2006.01) G09F 9/33 (2006.01)

Patent

CA 1046943

LUMINESCENT SOLID STATE STATUS INDICATOR ABSTRACT OF THE DISCLOSURE: A luminescent solid state status indicator including at least first and second light emitting diodes of different colors which may be mounted on a single header, One side of each of the diodes is connected in common to one side of a source of energizing voltage subject to variation in magnitude. The other sides of the diodes are interconnected with the electrodes of a transistor which has one electrode connected to the other side of the DC energizing voltage. The transistor is adapted selectively to energize the first and second light emitting diodes to display colors corresponding respectively to discrete magnitudes of said energizing voltage.

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