![]() ![]() Working Principle of Battery Charge Controller Circuit This charging controller circuit can be applied to any system that makes use of rechargeable batteries. Examples include emergency UPS, inverters, telephone receivers, etc. Here we have used LEDs to indicate the charging status. Circuit Diagram of Charge Controller Circuit Using LM324Ĭlick on the Image for Enlarged View Components Required for Battery Charge Controller Circuit But a charge controller circuit using LM324 that is described below will definitely prove helpful to you as it automatically switches off the charger when the battery is full.Īlthough LM324 IC is used in this circuit, you can use any other comparator ICs like LM358, LM317, LM339, etc. Generally, battery charge control circuits using 555 IC are often complex for many to comprehend. Battery Charge Controller Circuit Using LM324 Comparator IC Hope this guide has proven helpful for you to build your own battery charger circuit with the battery level indicator. When battery voltage goes below a particular value, LED1 stops glowing and the buzzer produces a sound indicating that the battery has been discharged. This circuit also indicates the charging status, that is the LED1 glows when the battery is charged (Above 10.5V). The 12-volt rechargeable battery is connected to the output of the voltage regulator, and it charges when the main power is available. ![]() That DC voltage is then fed to the voltage regulator IC 7815 the output will be regulated at 15V. Read: Full-wave bridge rectifier circuit with working explanation The main supply 230V or 110V is stepped down using a step-down transformer, and then it is rectified and filtered out. The charging circuit is built around a voltage regulator IC 7815 and two transistors BC 548. Resistors (10kΩ, 1.5kΩ, 100kΩ Each ¼ Watt)īuzzer (12V) Working of battery charger circuit ![]() Besides, as a basic electronics learner, you’ll learn what a comparator is from below this article. These circuit schematics will definitely be helpful for your daily life battery charging applications.
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