A variable capacitor with a range from 10 to 365 pF is used with a coil to
Question:
A variable capacitor with a range from 10 to 365 pF is used with a coil to form a variable frequency LC circuit to tune the input to a radio.
(a) What is the ratio of maximum frequency to minimum frequency that can be obtained with such a capacitor? If this circuit is to obtain frequencies from 0.54MHz to 1.60MHz, the ratio computed in (a) is too large. By adding a capacitor in parallel to the variable capacitor, this range can be adjusted. To obtain the desired frequency range,
(b) What capacitance should be added and
(c) What inductance should the coil have?
Step by Step Answer:
a Since the frequency of oscillation fis related to the inductance L ...View the full answer
Fundamentals of Physics
ISBN: 978-0471758013
8th Extended edition
Authors: Jearl Walker, Halliday Resnick
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