The IC contains adjustable reference and accurate 10-steps divider.
Lm3914 drives led’s, LCDs and vacuum fluorescents. The operating voltage of this IC is 3v to 25v DC. The circuit will work even if the battery voltage is 3V. The circuit is designed to monitor 10V to 15V DC. There is no need of any external power supply to this circuit. Here resistor R3 and POT RV1 forms potential divider circuit. This resistor controls the brightness of LED’s. 6 th and 7 th pins of IC are connected to the ground through a resistor. This mode is selected by the external switch sw1 which is connected to 9 th pin of IC. In this circuit LED’s (D1-D10) displays the capacity of the battery in either dot mode or display mode. Get an idea about the related post – How Automatic Battery Charger Circuit Works using LM317? Battery Level Indicator Circuit Diagram Battery Level Indicator Circuit Diagram Circuit Components In this circuit, there is no need of resistors in series with LEDs because the current is regulated by the IC. This IC takes input analog voltage and drives 10 LED’s linearly according to the input analog voltage. The heart of this battery level indicator circuit is LM3914 IC. Battery Level Indicator Circuit Principle This circuit is designed based on lM3914 IC (Integrated chip). So by using this circuit, we can increase the lifetime of battery. You can use this circuit to check car battery or inverter. This article explains you how design battery level indicator. For example six LED’s are glowing means battery capacity 60% remains.
In this project, I will show you how to design a simple Battery Level Indicator Circuit using easily available components. Battery level indicator indicates the status of the battery just by glowing LED’s. Battery Charge Level Indicator Circuit Applications.How to Operate Battery Level Indicator Circuit?.Battery Charge Indicator Circuit Design.Battery Level Indicator Circuit Diagram.Battery Level Indicator Circuit Principle.
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