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سؤال 210

What causes intermodulation in an electronic circuit?

  1. Negative feedback
  2. Lack of neutralization
  3. Nonlinear circuits or devicesپاسخ درست
  4. Positive feedback

توضیح

Intermodulation requires a nonlinear transfer characteristic: only when the output is not a straight-line function of the input do two input frequencies produce sum, difference and higher-order combination products. A perfectly linear circuit generates no new frequencies, regardless of feedback or neutralization.

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شروع تمرین
سؤال 210: What causes intermodulation in an electronic circuit? · FCC Amateur Extra Class (Element 4) · Questena