Common collector
In electronics, a common collector circuit, also known as an emitter follower circuit, refers to one type of circuit arrangement in which a bipolar transistor drives a load circuit such as a resistor or the next stage in an electronic amplifier. In this circuit arrangement, the collector node of the transistor is tied to a power rail or a common node, the emitter node is connected to the output load to be driven, and the base node acts as an input
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