DAYLIGHT-READABLE DIGITAL PANEL METER WITH AUTO-BRIGHTNESS ADJUSTING LED DISPLAY

摘要

A digital panel meter includes a light-emitting diode (LED) display that is sufficiently bright to be easily read in direct sunlight. The digital panel meter also includes an ambient light-sensing circuit which automatically and continuously adjusts the brightness of the LED display in order to provide adequate readability in ambient light conditions ranging from full sunlight to total darkness.