FCC Question Pool Review

Amateur Extra Class (Element 4) • 2024-2028

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Question E7A05

From subelement E7 - E7A

E7A05
Answer: D

Which of the following circuits continuously alternates between two states without an external clock signal?

AMonostable multivibrator
BJ-K flip-flop
CT flip-flop
DAstable multivibrator