New idea for stage 2.
Values or r2 and r3 will define current. I use potentiometer in place of r1 and r2 to get the desired temperature and replace it later with correct resistors.
I hope this works.
New idea for stage 2.
Values or r2 and r3 will define current. I use potentiometer in place of r1 and r2 to get the desired temperature and replace it later with correct resistors.
I hope this works.