LED Bar Graph Display

4,901 views · Published 15 February 2009 · 1:08 · Indexed 15 October 2026

Channel: Gabriel Nguyen · 2009 · Science & Technology

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LED Bar Graph Display, for automotive application. 
Frequency signal is fed into frequency to voltage converter.
Output voltage fed to linear LED bar graph display driver.

LM2917
LM3914
LED's (~12mA flowing in this design)

This prototype will be designed into a PCB soon.

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