Active Filter
1. A ________ filter rejects all frequencies within a specified band and passes all those outside this band.
2. A low-pass filter has a cutoff frequency of 1.23 kHz. Determine the bandwidth of the filter.
3. Refer to the given figure. The roll-off of the circuit shown is about
4. Refer to the given figure. The cutoff frequency of this filter is ________, and the circuit is known as a ________.
5. A ________ filter passes all frequencies within a band between a lower and an upper critical frequency and rejects all others outside this band.