AUTO TURN-OFF BATTERY CHARGER
This charger for series-connected 4-cell AA batteries automatically disconnects from ains to stop charging when the batteries are fully charged. It can be used to charge partially discharged cells as well.
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AUTOMATIC PHASE CHANGER
In three-phase applications, if low voltage is available in any one or two phases, and you want your equipment to work on Normal voltage, this circuit will solve your problem.