Figure 20 shows a drying oven for which the oven is either off with 0 V input or on with 8 volts input. The thermistor properties are: resistance of 4.7 kΩ at 35°C and 1.4 kΩ at 60°C.
It has a 5-mW/°C-dissipation constant. Design a two-position controller with trip points of 35°C and 60°C. Keep self-heating below 0.5°C.
