Can someone explain the workings of this charger schematic? Answered
I took apart my Black and Decker cordless drill charger, and drew this schematic to my best ability. I am trying to understand it to my best of my ability and what each component is responsible and how it charges the battery.
From my understanding D1 only allows energy to flow to the battery. But if the potential of the battery is lower then the charger's shouldnt that be not a problem? Since it will always be more and push the electrons to the battery?
The resistor and the LED are understandable, but the job of NPN (might be wrong ) transistor is a mystery to me.