There are two types of transistors, which have slight differences in how they are used in a circuit. A bipolar transistor has terminals labeled base, collector, and emitter. A small current at the base terminal (that is, flowing between the base and the emitter) can control or switch a much larger current between the collector and emitter terminals. For a field-effect transistor, the terminals are labeled gate, source, and drain, and a voltage at the gate can control a current between source and drain. COUNT 5
QSN1 How many types of transistors are there? ANS1 two QSN2 What controls the large current between the collector and emitter? ANS2 A small current at the base terminal QSN3 What are the components of a field-effect transistor? ANS3 gate, source, and drain QSN4 In a field-effect transistor, what controls the current between the source and drain? ANS4 a voltage at the gate QSN5 What are the components of a bipolar transistor? ANS5 base, collector, and emitter