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LM3914 Datasheet(PDF) 11 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
No. de pieza LM3914
Descripción Electrónicos  Dot/Bar Display Driver
Download  22 Pages
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Fabricante Electrónico  NSC [National Semiconductor (TI)]
Página de inicio  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM3914 Datasheet(HTML) 11 Page - National Semiconductor (TI)

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Typical Applications (Continued)
Expanded Scale Meter, Dot or Bar
00797008
*This application illustrates that the LED supply needs practically no filtering
Calibration: With a precision meter between pins 4 and 6 adjust R1 for voltage VD of 1.20V. Apply 4.94V to pin 5, and adjust R4 until LED No. 5 just lights.
The adjustments are non-interacting.
Application Example:
Grading 5V Regulators
Highest No.
LED on
Color
V
OUT(MIN)
10
Red
5.54
9
Red
5.42
8
Yellow
5.30
7
Green
5.18
6
Green
5.06
5V
5
Green
4.94
4
Green
4.82
3
Yellow
4.7
2
Red
4.58
1
Red
4.46
www.national.com
11


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