Question

Advantages of transistors over vacuum tubes

Answer 1

Vacuum Tubes: Disadvantages. High power consumption; needs heater supply that generates waste heat and yields lower efficiency, notably for small-signal circuits. Glass tubes are fragile, compared to metal transistors. Sometimes more prone to microphonics than transistors, depending upon circuit and device.

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Answer 2

Transistors: Advantages. Usually lower cost and smaller than tubes, especially in small-signal circuits. ... Lower power consumption, less waste heat, and high efficiency than equivalent tubes, especially in small-signal circuits. Can operate on lower-voltage supplies for greater safety, lower costs, tighter clearances.