= (5.5kΩ/100Ω)×(30kΩ/3kΩ)×3 = 1.65v. 3. Consider a thermistor having the following specifications: RF=150kΩ at a reference temperature of 35oC and temperature coefficient of resistance = 25oC. Determine the change in resistance at 100oC.
A. -1.625MΩ
B. 9.75MΩ
C. 4.78MΩ
D. None of the mentioned
Answer:A
= (5.5kΩ/100Ω)×(30kΩ/3kΩ)×3 = 1.65v. 3. Consider a thermistor having the following specifications: RF=150kΩ at a reference temperature of 35oC and temperature coefficient of resistance = 25oC. Determine the change in resistance at 100oC.
A. -1.625MΩ B. 9.75MΩ C. 4.78MΩ D. None of the mentioned
Explanation: Thermistor has negative temperature coefficient of resistance. Therefore, △R=-(25kΩ/oC )×(100oC-35oC) = -1625kΩ .