291 Project 1 Part B LED

Turning on LED if temperature goes below 20 Degrees Celsius Using: -Part A circuit -Comparator -Voltage divider The voltage divider in the bottom left gives a constant voltage of around 3.3466 (which is the same voltage as Vout at 20 Degrees Celsius or when NTC thermistor is at 12493 Ohms) The comparator then compares the Vout from LM317 and Vref from the voltage divider Note: I had to make Part B in 2 separate circuits because Multisim Free Version only allows for 25 components maximum. See 291 Project 1 Part B Motor