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سؤال 286

Which of the following indicates that a silicon NPN junction transistor is biased on?

  1. Base-to-emitter resistance of approximately 6 ohms to 7 ohms
  2. Base-to-emitter resistance of approximately 0.6 ohms to 0.7 ohms
  3. Base-to-emitter voltage of approximately 6 volts to 7 volts
  4. Base-to-emitter voltage of approximately 0.6 volts to 0.7 voltsپاسخ درست

توضیح

A conducting silicon PN junction settles at roughly 0.6 V to 0.7 V of forward drop, so that base-to-emitter voltage shows the transistor is biased on. Six to seven volts is ten times too high and would destroy the junction, and a resistance reading does not describe the bias state of a junction that is being driven by the circuit.

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شروع تمرین
سؤال 286: Which of the following indicates that a silicon NPN… · FCC Amateur Extra Class (Element 4) · Questena