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سؤال 384

What device is used as a stable voltage reference?

  1. A Zener diodeپاسخ درست
  2. A digital-to-analog converter
  3. An SCR
  4. An analog-to-digital converter

توضیح

A Zener diode operated in reverse breakdown holds a nearly constant voltage across a wide range of current, which is exactly what a reference needs. Converters and SCRs do not define a voltage.

ادامهٔ این آزمون

شروع تمرین
سؤال 384: What device is used as a stable voltage reference? · FCC Amateur Extra Class (Element 4) · Questena