I can't seem to get a simple comparator (opamp/comparator) to work on 10.1 anybody else have this issue?

[kbsimcg]

I can't seem to get a simple comparator (opamp/comparator) to work on 10.1 anybody else have this issue?

tried several comparator with no success. Simply placed componant added power and either connected + and _ pins to +v and gnd to bias the inouts in each way. Either way outputs a low.

[kbsimcg]

it appears that some of the comparators require a pull up on their output in multisim even though the datasheet doesn't reflect that is required in the real world. Anyway....I got it gpoing for now. I actually tried to inport a spice kodel for the copmparator I want to use.......but I can't seem to get it to work correct. The time I've spend ojn this I could of built the circuits already 🙂 

[cssetzer]

this seems to be a long term issue with multisim. Tru using a DC power supply for voltage reference, that works correctly for me. But if you use normal refence, like a voltage divider, the simulation just switches at zero as if there were now reference.