

Testing and Troubleshooting - Technical MCQs
Q1: In a class B push-pull amplifier, the transistors are biased slightly above cutoff to avoidA
crossover distortion
B
unusually high efficiency
C
negative feedback
D
a low input impedance
ANS:A - crossover distortion Crossover distortion is a type of distortion which is caused by switching between devices driving a load, most often when the devices (such as a transistor) are matched. It is most commonly seen in complementary, or "push-pull", Class-B amplifier stages, although it is occasionally seen in other types of circuits as well. |


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