Lithium battery charging constant current circuit diagram

Posted on Mar 28, 2007

As shown in FIG lithium battery is a constant current charging control board, the figure Q1, R1, W1, TL431 composition precision adjustable voltage regulator circuit. Q2, W2, R

Lithium battery charging constant current circuit diagram
Click here to download the full size of the above Circuit.

2 constitute an adjustable constant current circuit. Q3, R3, R4, R5, LED charging indicator circuit. With a rechargeable lithium battery voltage is gradually increased, the charging current will gradually decrease, decreasing the voltage drop on R4 After the battery is fully charged, and ultimately ended Q3, LED goes out, the battery can in order to ensure adequate, please extinguish lights after 1 to 2 hours to continue to charge, the need Q2, Q3 appropriately sized heat sink mounted when used.

Leave Comment

characters left:

Related Circuits

  • New Circuits



    Popular Circuits

    Five-step voltage-level indicator
    6V6 6J5 Class A Vacuum Tube (Valve) Amplifier Circuit
    Flame gas and smoke detector
    The Itsy-Bitsy USB Lamp
    transceiver circuits