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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
Tricks of the trade 307
the input of the second opamp in a h'\gh-Q
second-order vV-path filter section (see Figure
7.18). Figure 11.25a shows a circuit which provides
a ground referenced capacitance of -C, where C is
the value of the capacitor providing feedback
around the opamp. It is stable when connected in
parallel with a (positive) capacitance of value
greater than C. Figure 11.25b shows a centre
grounded negative capacitor. The slightly more
complex circuit of Figure 11.25c can provide a
floating (not ground referenced) negative capaci-
tance. The principle of operation of the circuits of
Figure 11.25 is not too difficult to grasp, an
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Publisher Resources

ISBN: 9781483162287