Questenaتدريب يوضح لك ما ينبغي مراجعته لاحقًا
السؤال 422

What is the typical output impedance of an op-amp?

  1. Very lowالإجابة الصحيحة
  2. Very high
  3. 100 ohms
  4. 10,000 ohms

الشرح

An operational amplifier is designed so that its output voltage barely changes with load, which means the output impedance must be very low. Negative feedback lowers it further still, typically to a fraction of an ohm.

تابع هذا الاختبار

بدء التدريب
السؤال 422: What is the typical output impedance of an op-amp? · FCC Amateur Extra Class (Element 4) · Questena