I have this simple voltage divider cicuit,
It works good, and if the voltage goes over 30 volts, LED1 begins to glow indicating over voltage(corrected LED in drawing). However, what I would really like it to do is to shut down, or significantly reduce the voltage threw the voltage divider when the input is over 30 volts and the zener begins to conduct.
I am thinking a MOSFET could be used to shut off or reduce the voltage going into the resistors R1, R2, & R3, but not sure how to insert it into the circuit.
Anyhelp?
It works good, and if the voltage goes over 30 volts, LED1 begins to glow indicating over voltage(corrected LED in drawing). However, what I would really like it to do is to shut down, or significantly reduce the voltage threw the voltage divider when the input is over 30 volts and the zener begins to conduct.
I am thinking a MOSFET could be used to shut off or reduce the voltage going into the resistors R1, R2, & R3, but not sure how to insert it into the circuit.
Anyhelp?
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