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Battery Charger Circuit for NiMH with Status Indicator

An application note for an intelligent trickle battery charger circuit for NiMH batteries, using an 8-bit microcontroller.

This design overcomes the disadvantages of trickle chargers. These types of charges, in contrast to fast chargers, are more economical. In this design, a microcontroller provides charge status and detect faults.

This battery charger circuit allows simultaneous charging of up to four NiMH batteries. The circuit for the battery charger is shown here:

Intelligent trickle charger circuit

The 8-bit microcontroller is responsible for task scheduling, voltage measuring, time-keeping and displaying (if there is).

Source code: Download

Full application note:

01463A

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