Design a Schmitt trigger using a IC 393 comparator (open-collector output) with thresholds at +1.0 volt and +1.5 volts. Use a 1.0 k pullup resistor to +5 volts, and assume that the 393 is powered from 15 volt supplies.
I think they are asking us to make the following circuit
simulate this circuit – Schematic created using CircuitLab
I have made the circuit but still not understanding how to setup R1,R2,R3,V2 to set the threshold voltage I think V1 will be out input.