5. An 600 mH inductor and a 3 Q resistor are connected in series with a 1200-V de power supply. a) Determine the time constant of the circuit. b) At what time is the current equal to 1/3 of the maximum current? , Solution

5. An 600 mH inductor and a 3 Q resistor are connected in series with a 1200-V de power supply. a) Determine the time constant of the circuit. b) At what time is the current equal to 1/3 of the maximum current? , Solution

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter20: Capacitance In Ac Circuits

Section: Chapter Questions

Problem 5PP: Three capacitors having capacitance values of 20F,40F, and 50F are connected in parallel to a 60 -...

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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.

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5. An 600 mH inductor and a 3 Q resistor are connected in series with a 1200-V de
power supply.
a) Determine the time constant of the circuit.
b) At what time is the current equal to 1/3 of the maximum current?
Solution

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