An ideal filter would offer infinite attenuation within the passband and zero attenuation throughout the stop band.
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Q36: For audio mixed with radio frequencies, a
Q37: Current that varies in amplitude but does
Q38: The ac component of a fluctuating dc
Q39: A transformer with a separate secondary winding
Q40: Capacitive coupling is probably the most common
Q41: The coupling capacitor isolates the dc voltages
Q42: The size of a coupling capacitor depends
Q43: Inductors are often used in parallel with
Q44: A coupling capacitor couples the ac signal
Q45: A low-pass filter allows the lower frequency
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