Industrial Motor Control
7th Edition
ISBN: 9781133691808
Author: Stephen Herman
Publisher: Cengage Learning
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Textbook Question
Chapter 46, Problem 8RQ
What is the disadvantage of driving a junction transistor into saturation?
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Chapter 46 Solutions
Industrial Motor Control
Ch. 46 - Prob. 1RQCh. 46 - Prob. 2RQCh. 46 - If an alternator is used to provide variable...Ch. 46 - What solid-state device is generally used to...Ch. 46 - Why are SCRs used to construct a bridge rectifier...Ch. 46 - What is the main disadvantage of using SCRs in a...Ch. 46 - How are junction transistors driven into...Ch. 46 - What is the disadvantage of driving a junction...Ch. 46 - Prob. 9RQCh. 46 - In variable frequency drives that employ IGBTs,...
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- What condition characterizes overcompounding?arrow_forwardWhat polarity must be connected to the collector, base, and emitter of a PNP transistor to make it forward biased?arrow_forwardHow many degrees are the current and voltage out of phase with each other in a pure resistive circuit?arrow_forward
- Explain how to test a PNP transistor with an ohmmeter.arrow_forwardIn a zener diode circuit, the current-limiting resistor limits the total circuit current to 150 milliamperes. If the load circuit is drawing a current of 90 milliamperes, how much current is flowing through the zener diode?arrow_forwardSCRs are members of a family of devices known as thyristors. What is a thyristor?arrow_forward
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