terminals is whatever is needed to make that current flow. So if it is
open-circuited the voltage becomes infinitely large. This kind of
generator is even more difficult to imagine because nothing very like
it exists. The nearest is a very high voltage in series with a very large
resistance, so that inserting any reasonable load resistance makes
very little difference to the amount of current. But we shall see in
Chapter 27 that a constant current almost regardless of resistance
(within certain limits) can be provided by special electronic circuits.
Any real generator can be simulated by an ideal current generator in
parallel with the appropriat ...
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