The following inductive circuit illustrates a common application of a diode to reduce current arcs (sparks) between the switch contacts when the switch is opened. Diodes used in this way are called flyback, freewheeling, or snubber diodes. Arcs can damage the switch and can create electromagnetic interference (EMI) that can affect surrounding circuits. Why does a switch arc when it is used to open an induc- tive circuit? What is the purpose of the diode? Consider the current flow in the inductor and how it changes as a function of time. Start with the switch closed and then describe what happens when it is opened. inductive load switch (eg, relay coil)

The following inductive circuit illustrates a common application of a diode to reduce current arcs (sparks) between the switch contacts when the switch is opened. Diodes used in this way are called flyback, freewheeling, or snubber diodes. Arcs can damage the switch and can create electromagnetic interference (EMI) that can affect surrounding circuits. Why does a switch arc when it is used to open an induc- tive circuit? What is the purpose of the diode? Consider the current flow in the inductor and how it changes as a function of time. Start with the switch closed and then describe what happens when it is opened. inductive load switch (eg, relay coil)

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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