Q. How to keep the output voltage swing of the op-amp comparator within specific limits?

A
External resistors or diodes are used
B
External zeners or diodes are used
C
External inductors or diodes are used
D
External capacitors or diodes are used
Solution:

To keep the output voltage swing within specific limit, op-amps are used with external wired components such as zeners or diodes. In the resulting circuit, the outputs are limited to predetermined values.

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