The battery power display produced by LM3914 is easy to understand, make you know and control any time. Power display is to get a voltage, then percentage segmented simulation display. LM3914 is National Semiconductor's dotted, striped drive, which has been in the market for more than 20 years. LM394 can detect the analog voltage accurately, and make 10 LED display. Light one of the 10 LED by dot-like mode, or use strip mode to light 10 LED one by one. The voltage displayed is the voltage between the upper and lower limits of the battery, divided into 10 files. Each light represents 10% of the electricity display, 10 LED light means the range of displaying power is 0%-10%, so that you can see the remaining power of battery clearly.
The LED power indicator display kit can be used as electricity display table and power tester. Suitable for lithium batteries, lead-acid batteries and other batteries, which need to display the battery.
Schematic diagram is:
Power supply display range is adjustable.
The battery discharge curve for the scientific settings, direct support:oen single lithium(4.2V)-four single lithium batteries(16.8V), lead-acid 6V-12V, nickel-hydrogen 3.6V-18V，and nickel-cadmium batteries 3.6V-18V.
Power consumption: the bar shows full light is 42mA, Single light shows is 4mA.
Measuring Range: 2.4-20 v.
Display method: multi-lamp bar; single light spot.
The size of PCB boards:2.6 x 4.9 mm.
Resistor 3K X 1.
3296W precision potentiometer 5K (502) X 1.
3296W precision potentiometer 50K (503) X 1.
6 X 6 X 7 Touch button x 1.
LM3914 lead ship x 1.
18 P IC Block x 1.
10-segment digital tube x 1.
PCB board x 1.
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