+15 V 2 kN 10 kn Vo 5 kN RT
Question 1.1 (correcta)
In the case of the circuit shown, it is a resistance that increases in value with increasing temperature. This type of thermistors are of the PTC (Positive Temperature Coefficient) type. Transistor Q1 is an N-channel enrichment MOSFET model HB-NR066, which has a threshold voltage VT= 3V, and turn-on values ID (on)= 10 mA and VGS(on)= 7V. The circuit It is used as a temperature-to-voltage converter for an industrial process, since the output voltage Vo changes with temperature. From the above, develop the following points.
a) If it is known that at a temperature 50 degrees Celsius the value of the thermistor is RT= 5k Ω find the operating point of the transistor for this temperature, as well as the output Vo. Also, perform the necessary calculations to verify that Q1 is in the saturation zone.
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