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A BETTER BATTERY CHARGER

Part 2: Hardware and Software Implementation
by Thomas Richter

Start ý The Buck Converter ý Voltage Reference and Battery Temperature ý AT90S2333 Battery Charger ý ATtiny15 Battery Charger ý Charge Current ý Software Implementation ý User Settings ý Source Code ý INT Battery Function ý The Stable_ADC Function ý BC.H ý B_DEF.H ý Charge MethodýSLA.C ý Charge MethodýNiCd.C and NiMH.C ý Charge MethodýLilon.C ý Suggested Improvement ý Sources and PDF

SUGGESTED IMPROVEMENT

A well-known fact is that NiCd batteries suffer from memory effects. That means, a battery that has been charged a couple times will not recharge completely. In order to erase the memory effect, a shunt resistor can be added, allowing the MCU to completely discharge the NiCd battery prior to charging. This will allow a longer battery lifetime and longer operation for the battery-driven application.

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