Interview Question

New Grad - Electrical Engineer Interview

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Milwaukee Tool

Same situation as previous questions but now sine noise is a step pulse function every 5 micro seconds. What can you do to prevent over voltage for MCU?

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Add some diodes in series but in parrallel to capacitor according to the over voltage seen by MCU, remember its not the full 20v because of voltage divider. Assumed diode drop is 0.5v. Other option and probably better is to use zener diode with break down voltage above 5v.

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