Battery charger circuits electronic circuits design

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

Power management integrated circuit LTC3554

This micropower multifunction power management integrated circuit (PMIC) is designed using LTC3554 manufactured by Linear Technology Corporation and is a solution for portable Li-Ion Polymer battery-based applications.

Circuit Diagram: 
Power management integrated circuit LTC3554

NiCd charger circuit diagram with transistors

This NiCd charger allows simultaneous charging of up to seven NiCd batteries connected in series. This number can be increased if the supply voltage increases by about 1.65 V for each battery. Given that T2 is mounted on appropriate heat radiator, the input voltage can be increased to a maximum of 25 V.

Circuit Diagram: 
NiCd charger circuit diagram with transistors