Which filter type is designed to pass a defined mid-frequency band while reducing others?

Which filter type is designed to pass a defined mid-frequency band while reducing others?

• A. Ripple amplitude
• B. Band-pass
• C. Band-reject
• D. Power Supply Circuits

Answer: (B)

Band-pass filtering is the process that lets through signals in a specific mid-frequency range while attenuating frequencies both lower and higher than that range. This is defined by a center frequency and bandwidth, so signals within that band pass with minimal attenuation while those outside are reduced. That matches the idea of passing a defined mid-frequency band and reducing others. In contrast, a band-reject (notch) filter suppresses a specific band, a high-pass filter passes high frequencies and attenuates low ones, and a low-pass filter passes low frequencies and attenuates high ones. Ripple amplitude and power supply circuits aren’t about selecting a frequency band in this way.

Band-pass filtering is the process that lets through signals in a specific mid-frequency range while attenuating frequencies both lower and higher than that range. This is defined by a center frequency and bandwidth, so signals within that band pass with minimal attenuation while those outside are reduced. That matches the idea of passing a defined mid-frequency band and reducing others. In contrast, a band-reject (notch) filter suppresses a specific band, a high-pass filter passes high frequencies and attenuates low ones, and a low-pass filter passes low frequencies and attenuates high ones. Ripple amplitude and power supply circuits aren’t about selecting a frequency band in this way.