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What is a DC/DC converter?

AC vs. DC

What is AC?

Short for Alternating Current, AC refers to current that changes in magnitude and polarity (orientation) with time.
It is often expressed in Hertz (Hz), the SI unit of frequency, which is the number of times the polarity changes per second.

What is AC?
What is DC?

1) DC, which stands for Direct Current, is characterized by current that does not change in polarity over time.

What is DC? 1

2) However, although the polarity does not change over time, there are small changes in magnitude that are also DC, called ripple current.

What is DC? 2
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