Part A - Calculating the output voltage of a difference op-amp circuit Learning Goal: To analyze difference op-amp circuits. For the circuit shown (Figure 1), determine V, when R = 6.6 kN, R2 = 100 kN , V, = 100 mV, V, = 20 mV, and Ver = 10 V Before proceeding, review difference op-amp circuits and the ideal op-amp assumptions. Express your answer to three significant figures and include the appropriate units. • View Available Hint(s) HẢ Vo = Value Units Submit Figure < 1 of 1 Part B - Design of a difference op-amp circuit For the circuit shown (Figure 1), determine R, such that Vo = m x (V, – V). Assume m = 6.5 and R, = 40 kN and that the op-amp is in its linear region of operation. Express your answer to three significant figures. • View Available Hint(s) R1 Vol AEo It vec ? -V V. R2 R = Submit w

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Thermistors

A thermistor is a special type of resistor whose resistance is more temperature-dependent than standard resistors.  The resistance of the thermistor decreases with increasing temperature. This is the basic principle of thermistors. This allows the thermistor circuit to detect very small temperature changes that cannot be observed with the Resistance temperature detectors (RTDs) or the thermocouples. Since the resistance of a thermistor is temperature dependent, it can be connected to an electrical circuit to measure body temperature. This high sensitivity to temperature changes makes thermistors very useful for accurately controlling and calibrating temperature measurements. In general, resistance increases with increasing temperature in most metals, but thermistors react negatively.