Danwvw
Active Member
I got my hands on some TL431 Voltage ref's that are much more accurate than Zener Didoes and I found a Calculator for figuring resistor values to set them up relative to ground which worked on Voltage Comparator input pin 2 but is there a way to use the TL431 to replace the 12 volt Zener to D+ as it is in the Schematic just above. Would it work with it Cathode directly to D+ and it's Anode to pin 3 and the 500 ohm resistor to ground. Can it's reference voltage be set with two resistors between Cathode and Anode?
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