/diy/ - Do It Yourself

>>1793761
a Schmitt trigger is a specific two-transistor circuit topology, not just a generic word for "comparator with hysteresis". the answer to your question is still obviously no, you can't make a Schmitt trigger with TL431 because you can't add positive feedback from outside the package and there is none inside (the shunt transistor is an inverter in voltage terms, therefore the REF input is actually negative feedback)
buuuut read TI app report SLVA987 titled "Using the TL431 as a Voltage Comparator", maybe you can use two or more to get the action you like

>>1793772
inchfags need that extra 0.25mm to get off

>>1708656
pole/throw might be a semi-deprecated terminology anyway. at least the industrial world seems to have settled on the contact form taxonomy
>FET's threshold voltage
those aren't all that crisp either. good point, I didn't mention the second power switching stage I had in mind. maybe a little positive feedback Schmitt trigger-style
>cheap 4-pin comparators
thanks for reminding me, Pic related