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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
Signal sources 229
frequencies below 100 Hz) to the finite thermal
time constant of the thermistor.
The Wien bridge oscillator shown in Figure
9.11b uses a two-gang variable resistor to vary both
resistors of the frequency determining network
simultaneously. This keeps constant the attenu-
ation through the network at the zero phase shift
frequency. It also provides a 10 to 1 frequency
tuning range for a 10 to 1 resistance variation, as
can be deduced from the formula for the frequency
quoted above. There are numerous sine wave
oscillator circuits which provide frequency vari-
ation using only a single variable resistor, but in
these the frequenc ...
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Publisher Resources

ISBN: 9781483162287