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Next, we're going to look at readback.

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Now, we're going to look at readback
and remote sensing on the power supply.

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We touched on that briefly
in lesson number one or two,

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but I wanted to look at that a little bit further.

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It essentially comes down to how do we know
what the output is from the power supply?

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There are internal measurements,

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there are also some more old-school methods
for doing external measurements.

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Can you talk about why you'd want to use internal
and its advantages over external measurements

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like a shunt resistor or something like that?

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In the old days,
we used to use a multimeter

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every time we set up our power supplies
to verify the voltage and also to measure current.

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Like you said, either using
the multimeter's capability

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to measure current or using a shunt resistor.

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It's always really painful to pick out
the proper shunt resistor

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to figure out one with the right thermals,
the right...