Definition of Bipolar Junction Transistor (BJT)

The Bipolar Junction Transistor (BJT) is an active device. In simple terms, it is a current controlled valve. The base current (IB) controls the collector current (Ic).

Tuesday, March 17, 2009

Common Circuit Application(Source Follower)

The simple source follower is shown below. The improved version is shown at the right. The lower JFET forms a current source. The result is that VGS is held constant, removing the defects of the simple circuit.

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