Question

Why triangle wave is used in comparator or in opam?

Answer 1

Here is your answer ⤵⤵⤵⤵

In general, square waves are relatively easy to produce. The comparator uses positive feedback that increases the gain of the amplifier. In a comparator circuit this offer two advantages. First, the high gain causes the op-amp's output to switch very quickly from one state to another and vice-versa.

HOPE IT HELPS YOU ☺☺ !!!