Q2 (iv) A circuit symbol is shown in Figure 2.2, below: R 5 V 2.3 V Figure 2.2 (a) What type of diode is represented by the circuit symbol shown in Figure 2.2? What is its bias condition? (b) Why is a resistor required? If the diode operates with a current of 25 mA, what is the value of resistor R?

Q2 (iv) A circuit symbol is shown in Figure 2.2, below: R 5 V 2.3 V Figure 2.2 (a) What type of diode is represented by the circuit symbol shown in Figure 2.2? What is its bias condition? (b) Why is a resistor required? If the diode operates with a current of 25 mA, what is the value of resistor R?

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter4: Transmission Line Parameters

Section: Chapter Questions

Problem 4.2P: The temperature dependence of resistance is also quantified by the relation R2=R1[ 1+(T2T1) ] where...

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Concept explainers

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.

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Q2
(iv)
A circuit symbol is shown in Figure 2.2, below:
R
5 V
2.3 V
Figure 2.2
(a)
What type of diode is represented by the circuit symbol shown in
Figure 2.2? What is its bias condition?
(b)
Why is a resistor required? If the diode operates with a current of
25 mA, what is the value of resistor R?

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