Exam 27: Filters

What is the rolloff rate for an RC low-pass filter below the cutoff frequency?

With an ideal filter, what attenuation should exist within the passband?

With a band-stop filter, the frequency of maximum attenuation is called the

What circuits provide a convenient method of filtering a band of radio frequencies because relatively small values of L and C are necessary for resonance?

A transformer with a separate secondary winding isolates or blocks steady direct current in the primary.

Which of the following components is used to isolate or block a steady dc?

What is the characteristic of some crystals that causes them to vibrate by a voltage input or produce voltage output when compressed, expanded, or twisted?

In analyzing filters, the ______________ unit is often used to describe the amount of attenuation offered by the filter.

With a high-pass filter, the output

A band-stop filter is also called a ______________ filter.

The ac signal voltages present at the input to a filter usually span a wide range of frequencies.

Any low-pass or high-pass filter can be thought of as a ______________-dependant voltage divider.

The ability of any filter to reduce the amplitude of undesired frequencies is called

Current that varies in amplitude but does not reverse in polarity is considered

In the application of a band-stop filter to suppress certain frequencies, the LC circuit is often called a

For audio mixed with radio frequencies, a low-pass filter allows the audio frequencies in the output.

The ______________ filter is comprised of a high-pass and low-pass filter in order to pass only a certain band of frequencies.

The size of a coupling capacitor depends on the

An ideal filter would offer infinite attenuation within the passband and zero attenuation throughout the stop band.

______________ circuits provide a convenient method of filtering a band of radio frequencies because relatively small values of L and C are required for resonance.