It also explains why the circuit may malfunction when one or more batteries deteriorate. Kirchhoff’s Law holds true even if you’re using complicated configurations that involve series-parallel batteries. Using Kirchhoff’s Law, you’ll be able to calculate the current that flows into each subcircuit, which will help determine the capacity and durability of the battery. The law states that the total current entering a node in the circuit is equal to the sum of current flowing out of it. ![]() In this case, Kirchhoff’s Current Law (KCL) will be handy. You can’t afford mistakes in estimating the current requirement, which means calculating the current delivered to various components in the circuitry. If your design requires multiple batteries, chances are every microamp delivered matters. ![]() Using Kirchhoff’s Law for Calculating Current from Multiple Batteries Then, two or more series connections are connected in parallel, to enlarge the current capacity. In this configuration, batteries are first connected in series to deliver similar voltages. But what if you want to have the best of both configurations? Enter the series-parallel battery configuration. Series-Parallel Battery Configurationīatteries in series produce higher summed voltage, while batteries in parallel produce a higher total current. Multiple batteries in a parallel configuration. In a parallel configuration, the positive and negative terminals of the batteries are interconnected as shown in the following diagram. The voltage delivered remains unchanged, but the current is a sum of each battery combined. Meanwhile, the parallel battery configuration has the opposite effect. ![]() Multiple batteries in a series configuration. The current that passes through is unaltered and is the rated current for a single battery. In the series configuration, the voltage seen across the load is the total of the batteries combined.įor example, if four batteries with 1.5V each are connected in series, the voltage delivered to the load is 6V. The series configuration is where two or more batteries are connected sequentially the positive terminal of one battery connects to the negative terminal of the other and so forth. In practical applications, you’ll often come across these configurations with multiple batteries: Common Configurations of Multiple Batteries in a Circuit With the information in this guide, you will learn the different ways to safely use multiple batteries in a circuit. ![]() Besides determining the configuration, you’ll need to do some quick calculations on the current and employ some key safety measures. This is also true when you’re designing with multiple batteries in a circuit. Occasionally, you can overlook simple concepts and fail to consider crucial factors, just like not considering the limitations of an old graphics card. To my surprise, my aging laptop and its limited graphics processing power mean I have to settle with only two screens for the time being. I decided to buy a new, third monitor along with a display adapter so that I can have three screens, which I thought would be simple to set up. However, I was not just content with 2 screens. Having two screens makes work easier, as I don’t have to flip between datasheets and my designs. While the larger screen helps with my deteriorating eyesight, it isn’t all about larger fonts and icons. I’m used to staring at a 24” monitor, despite working from a laptop. Explore common configurations for multiple batteries.Īpply Kirchhoff’s current law in batteries-powered circuits.įind out ways to protect failing batteries from compromising safety.
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