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BATTERY MONITOR CIRCUITS HOW TO
BATTERY MONITOR CIRCUITS DRIVER
BATTERY MONITOR CIRCUITS FULL
BATTERY MONITOR CIRCUITS SERIES

BATTERY MONITOR CIRCUITS FULL

To maintain the battery pack in full health is the responsibility of the Battery Management System (BMS).

This circuit is theoretical and may require some changes to work in practical.The mileage and performance of an Electric Vehicle depends on the capacity and efficiency of its Battery Pack.

This battery level indicator works only for small voltages.

This circuit is used to calibrate inverter status.

We can use this circuit to measure car battery level.

First led will glow for 1.2V and second LED is for 2.4 V and so on.īelow table shows the status of LED’s with input voltage level.īattery Charge Level Indicator Circuit Applications.

Now increase the input Dc voltage slowly and observe the LED’s.

Now adjust the pot RV1 so that LED D1 just starts glowing.

Connect battery to be tested to the input of the circuit.

BATTERY MONITOR CIRCUITS HOW TO

How to Operate Battery Level Indicator Circuit? We can extend this circuit to 100 steps by cascading lm3914 IC’s. In this circuit each led indicates 10 percent battery level. This circuit is most suitable for indicating 12V battery level. Now the circuit is ready to monitor other voltage ranges. Now disconnect the pot, measure the resistance across it and connect resistor of same value in place of R2. Connect a high value variable resistor in the place of resistor R2 and vary it till the D1 LED glows. Now remove upper voltage level at the input and connect lower voltage level. Now vary the resistance of Pot RV1 till the D10 LED glows. For this remove the resistor R2 and connect upper voltage level to the input. With a little modification we can use this circuit to measure other voltage ranges also. Connect D1 to D3 red LED’s which indicates shut down stage of your battery and use D8-D10 green color LED’s which indicates 80 to 100 percentage of the battery and use yellow color for remaining.ĭo you know about the concept – How a Wireless Power Transfer Circuit Works? We can also connect different color led’s to indicate the status.

For dot display – leave the 9 th pin of IC.

For bar graph display – connect 9 th pin of IC to the supply.

It supports wide range of temperature from 0 to 70 degree Celsius.

No multiplexing interaction between outputs.

BATTERY MONITOR CIRCUITS DRIVER

LED driver outputs are current regulated.

Programmable output current 2mA to 30mA.

Internal voltage reference from 1.2 to 12v DC.

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

BATTERY MONITOR CIRCUITS SERIES

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.