5v Powered Charge Pump Battery Charger

Posted on Feb 6, 2014

The circuit below will trickle charge a four cell pack of AA or AAA NiMH batteries. The circuit draws current from the +5v available a USB connection and pumps about 70ma of current into the battery. This should be enough current to fully charge a pack of 2500ma-hour cells in about 36 hours. The circuit uses a single 74HC14 hex Schmitt trigger inv

5v Powered Charge Pump Battery Charger
Click here to download the full size of the above Circuit.

erter in conjunction with a voltage doubler charge pump circuit.

Leave Comment

characters left:

Related Circuits

  • New Circuits



    Popular Circuits

    Sound Effects Generator 2
    Digital Automatic Level Control (Alc) Circuit
    Quiz Project
    Classic Schematics
    Complete SS Laser Power Supply Schematics
    555 capacitance frequency transistor-line detector
    Digital pulse width measurement circuit diagram CD4518 and CD4069 the