Consider the circuit shown... ![]() Simple transistor circuit. (Enlarge) The circuit has the typical behavior of a transistor circuit... |
![]() Circuit diagram of a simple transistor circuit. |
A small current into the base of the transistor has the result that a much larger current flows through the transistor from the collector to the emitter. The base current is amplified!
However, this is not the only way of how a transistor can amplify current, or also voltage...