Triple comparator with strobe input and logic outputs
This module contains three voltage comparator circuits, each with a positive and negative input and an offset control connected to the negative input.
The output will be high (aprox 5v) when the positive input is higher than the negative input (jack and offset combined) and low (0v) when the opposite is true. All inputs and the offset are bi-polar, accepting both positive and negative voltages.
The 3 outputs are internally conected to the 3 logic circuits. AND, OR, and XOR logic outputs. The XOR output will be logic low when all 3 comparator outputs are high.
STROBE will turn all output off when high, regardless of any input.
These merchants probably sell this module. Huh?