Overview:
Introduction A charger is usually referred to as a device that converts alternating current into low voltage direct current. Chargers are widely used in various fields, especially in the field of life, and are widely used in mobile phones, cameras, toys, portable devices and other common electrical appliances.
The ordinary charger has a single function and is highly targeted. There are many types of rechargeable batteries, and each type of battery needs to be equipped with a kind of charger. Therefore, users often purchase more chargers, which leads to waste of resources, and the normal charger has a reduced battery life due to imperfect functions or improper use. Safety accidents, used batteries can cause a lot of pollution to the environment. The charger introduced in this paper is based on AVR MEGA16 microcontroller as the core intelligent control. The A/D sampling battery voltage inside the microcontroller is used to judge the battery type, and then the charging function is realized by the I/O port control chip LM2576. The charger has the advantages of intelligent discrimination, intelligent charging and intelligent control. It also incorporates reverse connection protection and overcharge protection. The charging status is liquid crystal display. The charging process is clear and clear, and the human-computer interaction performance is excellent.
1 system hardware structure shown in Figure 1, the system consists of power supply circuit, microprocessor, display circuit, charging circuit, battery judgment circuit, reverse connection protection circuit and other six parts. The following focuses on the microprocessor circuit and charging circuit.
Figure 1 charger system block diagram
More about LM2576TV-ADJ: Integrated Circuit Query Network http://
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