Explanation: Sometimes it is necessary to find the instant at which an unknown input is between two threshold levels. This can be achieved by a circuit called window detector. 11. Find the instance at which the input can be fed to the op-amp in a three level comparator with LED indicator.
A. When Green LED glow
B. When Yellow LED glow
C. When Red LED glow
D. All of the mentioned
Answer:A
Explanation: Sometimes it is necessary to find the instant at which an unknown input is between two threshold levels. This can be achieved by a circuit called window detector. 11. Find the instance at which the input can be fed to the op-amp in a three level comparator with LED indicator.
A. When Green LED glow B. When Yellow LED glow C. When Red LED glow D. All of the mentioned