Electronics Engineering Question:

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Explain how to measure the insulation resistance for printed circuit boards?

Electronics Engineering Interview Question
Electronics Engineering Interview Question

Answer:

Because opamp having high input impedance due to differential amplifier connected at the input side which is in the range of MEGA ohms and low output impedance due to power amplifier used at the output stage of opamp.
Basically saying as opamp having high input impedance and low output impedance opamp shape shown by triangle.

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