amplitude. Therefore, the ratio of amplitude of capacitor voltage to amplitude of input volt-
age at
ω
n
must be 1/
ω
n
RC. Similarly, the ratio of amplitude of inductor voltage to amplitude
of input voltage at
ω
n
must be
ω
n
L/R. But, both these ratios are equal to the Q-factor of the
circuit as given below.
Thus, the voltage amplification factor for capacitor voltage and inductor voltage in
a series RLC circuit at resonant frequency is its Q-factor.
Resonant amplification of voltage in a series RLCcircuit is one method used in High
Voltage Engineering to generate high AC voltages from low voltage sources. Such ampli-
fication becomes possible because at ...
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