Brightness control device for light emitting display of electronic meter
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Nov 9, 1982
Grant Date -
N/A
app pub date -
Sep 25, 1980
filing date -
Sep 25, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A brightness control device for a light emitting display of an automotive vehicle electronic meter wherein the brightness of the light emitting display is controlled in response to the variable duty factor output pulse signal produced by an illumination controller for an illumination lamp of an ordinary meter. A circuit is provided for securing the minimum brightness of the light emitting display. The circuit is rendered operative when a lighting switch is turned off to limit the amplitude of a pulse voltage applied to one terminal of the light emitting display.
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