EEE :: Passive Filters
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In a certain low-pass filter, fc = 3.5 kHz. Its passband is
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An RC high-pass filter consists of an 820
resistor. What is the value of C so that Xc is ten times less than R at an input frequency of 12 kHz? -
A series resonant band-stop filter consists of a 68
resistor, a 110 mH coil, and a 0.02 
F capacitor. The internal resistance, RW, of the coil is 4 . Input voltage is 200 mV. Output voltage is taken across the coil and capacitor in series. What is the output voltage magnitude at f0? -
A sinusoidal voltage with a peak-to-peak value of 18 V is applied to an RC low-pass filter. If the reactance at the input frequency is zero, the output voltage is
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Vout = 500 mV, and Vin = 1.3 V. The ratio Vout/ Vin expressed in dB is
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At a certain frequency, the output voltage of a filter is 6 V and the input is 12 V. The voltage ratio in decibels is
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An RC high-pass filter consists of a 0.2
F capacitor and a 220 resistor. The output is taken across the resistor. The circuit's critical frequency is
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