9/17/2023 0 Comments Define transistor in chemistry![]() ![]() The increase in the conductivity of a semiconductor as a result of incident photons of suitable energy is called photoconductivity. Collect/removes majority charge carriers coming from the emitter. Moderately doped crystal thickest in size. It passes most of the emitter injected charge carriers to the collectors. Lightly doped crystal and made very thin. Moderate Size: Thinner than the collector and thicker than the base. Heavily doped crystal supplies/emits majority charge carriers. For its biasing, the emitter-base junction is always forward biased while the collector-based junction is always reverse biased. In transistors, the collector region is physically larger than the emitter region. Field-effect Transistorįield-effect transistors are labeled as the gate, source, and drain, and a voltage at the gate can control a current between the source and drain. A small current at the base terminal (i.e., flowing between the base and the emitter) can control or switch a much larger current between the collector and emitter terminals. ![]() It has terminals labeled base, collector, and emitter. Their use has revolutionized the field of electronics and paved the way for smaller and cheaper radios, computers, and calculators, among other things.
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