Chager circuit for SMF batteries


Posted on Feb 5, 2014

Here is a simple charger circuit for charging SMF(sealed maintenance free ) batteries. The charger circuit being curernt and voltage regulated, can be safely used to charge SMF batteries of 1. 2 AH rating. This circuit was actually designed in response to a request from a reader. With slight modifications you can use it for charging any sort of SMF bat


Chager circuit for SMF batteries
Click here to download the full size of the above Circuit.

teries. The first part of the circuit is the power supply made of transformer T1 and diodes D1&D2. The capacitor C1 filters the rectifier output. The next part is the section comprising of IC1 and Q1 which provides the necessary volatge and current regulation. The diode D3 prevents ther reverse flow of charge from the battery. R4 is the component that determines the charging current. Here it is set to be 120 mA. R4= (0. 6 V/Charging current). By selecting the proper value of R4 according to equation, you can charge batteries that require different charging currents.




Leave Comment

characters left:

Related Circuits

  • New Circuits

    .

     


    Popular Circuits

    13.8V/40A Stabilized high Power Supply
    Function Generator Circuit
    pcb Help identifying and finding shematics/datasheets for circuit board
    TESLA COIL BUILT
    the modern firepower pinball project
    Evaluation Board For The Ad9834 Direct Digital Synthesizer
    Digital frequency counter
    Salvaging Interesting Gadgets Components and Subsystems
    1kHz precision sine generator using PIC 16F628
    Metal detector circuit diagram 1
    In-Cab Winch Controls and Winch Power Disconnect
    Ultrasonic Dog Whistle
    Fluorescent lamp electronic ballast circuit
    200 meters remote control schematic design



    Top