A transistor works by changing its resistance between the amount of power going in and the power going out, depending on how much current flows through the base to the emitter. Transistors can amplify electronic signals ... More » Home & Garden Home Maintenance Electrical

A transistor amplifies and switches electrical power and electronic signals. It is a semiconductor made of solid, non-moving parts that control the flow of electricity in circuits. More » Science Physics Optics & Waves

Transistors function as current amplifiers or binary switches. With amplification, a small current controls a gate for a greater current. As switches, a 5-volt threshold (gate open) equals binary digit one, less than 5 v... More » Technology Audio Equipment
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