The LM317T will act as a heater which will toggle between 5.05V and 5.47V.So the 5.47V changes in response to temperature and is controlled by a NDP6060 MOSFET which is rated for 48A.
I don't see what the LM371s do to help. Can you not just the heater/resistors dorectly to the controller?
by Jake Hertz
by Duane Benson
by Jake Hertz