-Refer to Figure 20-2.Which of these circuits is known as a peak detector?
A)(a)
B)(b)
C)(c)
D)(d)

Question

-Refer to Figure 20-2.Which of these circuits is known as a peak detector?
A)(a) 
B)(b) 
C)(c) 
D)(d)

Quizplus · Accepted Answer

Circuit (c) is known as a peak detector because it is designed to hold the peak value of the input signal. It typically consists of a diode, resistor, and capacitor, where the diode allows the capacitor to charge to the peak value of the input signal, and the resistor slowly discharges the capacitor, allowing the circuit to update its peak value with each new input signal peak.