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What I meant was once a negative voltage is reached, the circuit should perform an action. In this case, I used an op-amp to check the voltage level measure against the reference voltage. The issue was as I changed the reference voltage level on one opamp input, it would effect the measured...
I have a circuit that has constant current but the load drops in resistance over time. I need to be able to shut off the circuit once a voltage level drop is reached. The voltage starts at -95vdc and reaches -10vdc when I would like the circuit to shut off. Any ideas would be great appreciated...
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