Transcript Lec6.3.ppt

Lecture 6.3
1
Demonstration
Lecture 6.3
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C
 0A
d
 0  8.85 10 12 F/m
Lecture 6.3
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“Stiffening capacitor” for the
stereo system of a car.
Lecture 6.3
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Electrolytic Capacitors
The aluminium electrolytic capacitor consists of two foils
interleaved with an absorbent paper, and wound tightly into a
cylinder. The positive foil, or anode, is made from pure aluminium
foil on the surface of which aluminium oxide dielectric has been
formed electrolytically. The foil has been etched to increase the
effective surface area, and the area of the anode is ypically 30–100
times larger than the plan area of the foil.
http://www.ami.ac.uk/courses/topics/0136_ec/
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The Leyden Jar
http://www.sparkmuseum.com/BOOK_LEYDEN.HTM
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Lecture 6.3
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(A)
(B) Calculate the total energy per unit length
for voltage 12 V.
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