2Terminology — WSU

2Terminology — WSU - Terminology - WSU

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Terminology Transistors are comprised of N-Type and P-Type materials. The transistors shown below are called bi-polar transistors because they have two polarity changes in the materials it is made from. A bi-polar transistor has three wires attached to it: One is called the emitter One is called the base Another is called the collector. The voltage level on the base controls the transistor and can allow current between the emitter and the collector. The base current is typically very small compared to the emitter-collector current. The ratio of the base current to the emitter-collector current is called the transistor's beta (or amplification)
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