Bundle: Understanding Motor Controls, 4th + Mindtap Electrical, 2 Terms (12 Months) Printed Access Card
4th Edition
ISBN: 9780357097755
Author: Stephen L. Herman
Publisher: Cengage Learning
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Chapter 51, Problem 1RQ
To determine
Operation of diac.
Expert Solution & Answer
Explanation of Solution
Diac has a set voltage depending on the material used. When voltage of that particular value is applied, diac allow current to pass. It operates in both the direction of current flow unlike diode. Once the required voltage is given, it conducts in both direction.
The diac have negative resistance. Due to this, the minimum voltage value needed to keep the diac in on state is less than that of the minimum voltage needed to start the operation of diac. Therefore, the diac starts operation at a particular voltage value and stops when voltage is less than the conduction level.
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