# Impedance and MOS transistors

Hello.

In a class today, the lecturer said, in an introduction to the material that will be covered, something along the lines of "..and the current is kept relatively flat (low?) thanks to impedance ..."

Is this because impedance acts like resistance (but in AC circuits), or would there be another reason?

I was going to ask after the class, but the fire alarm went off, and we all hightailed it out of there.

I only ask because, for some reason, impedance always seems a bit complicated to me ...more complicated than it needs to be I am sure.

-S

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