I came across this circuit which is almost exactly what I was looking for. It's using 100k thermistor and a lm358 to control a relay.
my question is how would I have to change this in order to control a mosfet instead of a relay and I need the circuit to turn off the mosfet after a certain temperature. I understand how to change the desire temperature but in this schematic it is turning on the relay.
It also says the circuit is good for up to 12 volts or as low as 5v. I would have to use this circuit for lower than 5v. Anywhere between 3v and 42v... would I be better off powering this circuit separately from my main project it would not be difficult to use this with any of those voltages?
Thx
my question is how would I have to change this in order to control a mosfet instead of a relay and I need the circuit to turn off the mosfet after a certain temperature. I understand how to change the desire temperature but in this schematic it is turning on the relay.
It also says the circuit is good for up to 12 volts or as low as 5v. I would have to use this circuit for lower than 5v. Anywhere between 3v and 42v... would I be better off powering this circuit separately from my main project it would not be difficult to use this with any of those voltages?
Thx