I am assuming that there is a very simple solution to this. A friend of mine has a diesel generator that he wants to add something to that will shut it off if it gets to a temp over it's normal operating range.
What I have already is a relay that if activated, will kill the fuel solenoid on the injection pump, and a Chevy temp sensor with a varying resistance output. I figure I will just be making a simple voltage divider with the sensor, and a resistor to make a voltage signal reflecting temperature.
So what it comes down to, is that I need to make a circuit that will activate a relay when a certain voltage input is reached. I am pretty limited as I am new to electronics, but I put together a way to make it work, but it is based on an LM3914, and I was just going to use one of the LED outputs that activated at the voltage I wanted, to operate a transistor to drive the relay. It would probably work, but is probably the wrong way to do it, as I am still pretty limited, but learning by the day! Thanks for any ideas!
What I have already is a relay that if activated, will kill the fuel solenoid on the injection pump, and a Chevy temp sensor with a varying resistance output. I figure I will just be making a simple voltage divider with the sensor, and a resistor to make a voltage signal reflecting temperature.
So what it comes down to, is that I need to make a circuit that will activate a relay when a certain voltage input is reached. I am pretty limited as I am new to electronics, but I put together a way to make it work, but it is based on an LM3914, and I was just going to use one of the LED outputs that activated at the voltage I wanted, to operate a transistor to drive the relay. It would probably work, but is probably the wrong way to do it, as I am still pretty limited, but learning by the day! Thanks for any ideas!