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Which of the following generates a back EMF?(a) relay(b) buffer(c) transistor(d) FETI got this question in an online interview.My doubt is from Power Controls topic in portion Interfacing to the Analog World of Embedded Systems |
Answer» RIGHT answer is (a) relay For EXPLANATION I would say: The relay generates a BACK voltage across its terminals when the logic output SWITCHES from a HIGH to low state. |
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