1. The problem statement, all variables and given/known data A microcontroller for temperature limit control has a 0 V to 5 V power supply. An NTC temperature sensor provides an input voltage to a ・} 5 V comparator op-amp. Depending upon whether the temperature is below or above the set limit, the output from the opamp comparator will be low or high. It is undesirable for a direct electrical connection to exist between the sensor and the controller. Draw a circuit diagram to show how you could interface the NTC sensor to the microcontroller. Resistor values are not required. 2. Relevant equations N/A 3. The attempt at a solution I have a diagram of a window comparator circuit (see attached) with the thermistors output being one of the opamp inputs. I think I could use a optics to transfer the signal from the comparator to the microprocessor. I was thinking of a LED to transmit the signal and a photodiode to receive it at the microprocessor, but I'm unsure how to draw this. Any help would be greatly appreciated.