This bar or moving point indicator (bargraph) employs the LM3914 and can excite 10 LEDs, of any color. Among the applications we have the indication of voltage in instruments, reservoir level indicator or even as VU-meter in stereos. The two trimpots are adjusted to adapt the range of input voltages to the full scale. Using key S1, we select whether the device works as a point scale or a movable bar. The circuit operates with supply voltages from 5 to 12 V.
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