Hi !
I have to admit I'm a real n00b. My issue is with two OPAs set as comparators with two reference voltages. References are on non-inverting inputs and the others a fed with a 5Vpp triangle signal. When testing each comparator separately, I mean not feeding the other, they work as expected: I get the full swing output with each. When both get the triangle input signal, it looks like they no longer compare anything. One is stuck at V+ rail while the other output is at V-. Rails are +12/-12, OPAs are 5532, Spice simulation is OK, Vrefs too...
The schematics and the simulation:
What I get when both OPAs get the signal (CH3=comp.A, CH4=comp.B):
How they do running indivdually:
I did something wrong and fail to guess what ...