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Battery charger circuits electronic circuits design

Simple and complex battery chargers electronic circuits design projects and schematics with diagrams and description for various battery type.

MAX8934 LiIon battery char­ger

Using MAX8934 LiIon battery char­ger can be designed a simple battery charger which monitors the battery temperature (TBATT) while charging, and automatically adjusts the fast-charge current and charge termination voltage as the battery temperature varies.

Circuit Diagram: 
MAX8934 LiIon battery char­ger circuit diagram
Electronic Circuits: 

MAX8903A charger circuit diagram

Using MAX8903A charger chip can be designed a very simple high efficiency charger circuit using few external electronic parts .
The output current limit can be set up to 2A while USB input current can be set to 100mA or 500mA.
When the device is connected to the external power the system will be switched automatic from battery to the external power .

Circuit Diagram: 
MAX8903A charger circuit diagram
Electronic Circuits: 

LM317 Lead acid batteries charger circuit design electronic project

Using an LM317 voltage regulator can be made very simple charger, very useful for charging lead acid batteries. Unlike NiCd batteries, they must be recharged by connecting to a constant voltage (proper size).

Circuit Diagram: 
LM317 Lead acid batteries charger circuit design electronic project
Electronic Circuits: 

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