Programmable Logic Controllers
Programmable Logic Controllers
5th Edition
ISBN: 9780073373843
Author: Frank D. Petruzella
Publisher: McGraw-Hill Education
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Chapter 13, Problem 11RQ
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Voltage spike:

  • Voltage spike refers to a sudden increase in voltage which lasts for less than 3 nanoseconds.
  • It is also known as voltage surge.
  • A corresponding increase in current is produced by the effect of a voltage spike.
  • Some voltage spikes are also created by current sources.

Diode:

  • Diode refers to a two-terminal electrical device which conducts current primarily in one direction.
  • It has ideally zero resistance in one direction and ideally infinite in the other direction.

Inductive loads:

  • The function of an inductive load is to convert the current into a magnetic field.
  • Inductive reactance will resist changes in current, and, when measuring current, it lags the voltage.
  • Motors, transformers, and chokes are some of the example devices that produce inductive loads.
  • Inductance is measured in Henry.

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