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Analog Electronics
book

Analog Electronics

by Ian Hickman
October 2013
Intermediate to advanced content levelIntermediate to advanced
342 pages
16h 43m
English
Newnes
Content preview from Analog Electronics
Passive components 13
discharged to e' =
1/2.718
28 = 0.37 V approxi-
mately.
We have seen that in a circuit with a direct
current (DC) source such as a battery, and con-
taining a capacitor, only a transient charging
current flows; this ceases entirely when the capaci-
tor is fully charged. So current cannot flow con-
tinuously in one direction through a capacitor. But
if we connect first a positive supply to the capaci-
tor, then a negative one, and so on alternately,
charging current will always be flowing one way or
the other. Thus an alternating voltage will cause an
alternating current apparently to flow through a
capacitor (see Figure 1.7) ...
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Publisher Resources

ISBN: 9781483162287