![]() ![]() This voltage comparator can be powered up using 3 to 36 volts. So if you really want to learn the designing then follow this article and do exactly the same things. But remember, downloading the circuit diagram or making the circuit without the designing steps will never help you learn electronics. Make sure you download the datasheet so that you can follow all the steps, or if you want the circuit only, then you can jump to the circuit diagram. So first of all, let’s start with the datasheet of the LM339 voltage comparator. This helps me in understanding the electronic components Pinout, electrical characteristics and so many other things. It’s a good designing practice to download the datasheets of the electronic components that you are going to use. But I will use one IC to display 4 levels,Īs I said earlier this tutorial mainly focuses on the designing steps, so before I explain the complete circuit diagram first I would like to explain the LM339 voltage comparator IC. If you want to display all the 11 levels then you will have to use three lm339 comparator ic’s. As we will be using lm339 voltage comparator which has 4 outputs, it means we can connect 4 led’s or relays. As you can see in the table, at different voltages we have different charge percentage. ![]() I searched for a random battery and downloaded its charge Vs Voltage table. ![]() I would appreciate your support in this way! I may make a commission if you buy the components through these links. The same circuit will also be used in making a stabilizer which I will show you in upcoming tutorials.įor advanced level battery voltage monitoring systems check the related projects section given at the end of this article. In this tutorial, you will also learn how to use a voltage comparator LM339, its basic working principle, How to set the trigger voltages to show the exact charge percentage, and then how to make a final circuit. This tutorial explains the complete designing steps. This battery voltage monitor is entirely based on the LM339 voltage comparator IC. In this tutorial, we not going to use any Microcontroller. Battery Voltage Monitor Finally Testing:īattery Voltage Monitoring, Project Description:īattery Voltage Monitor- In this tutorial, you will learn how to display the percentage of charge available in the battery using LEDs.Battery Voltage Monitoring, Project Description:. ![]()
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