A variable capacitor with a range from 8.5 to 389 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 0.66 MHz to 1.54 MHz, 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 in picofarads should be added and (c) what inductance should the coil have?

icon
Related questions
Question
A variable capacitor with a range from 8.5 to 389 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 0.66 MHz to 1.54 MHz, 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 in picofarads should be
added and (c) what inductance should the coil have?
(a) Number
Units
(b) Number
Units
(c) Number
i
Units
Transcribed Image Text:A variable capacitor with a range from 8.5 to 389 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 0.66 MHz to 1.54 MHz, 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 in picofarads should be added and (c) what inductance should the coil have? (a) Number Units (b) Number Units (c) Number i Units
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 3 steps

Blurred answer
Similar questions