Quiz 15: Active Filters

Figure 1 Stage 1: DF = 1.848 and R₁/R₂ = 0.152; stage 2: DF = 0.765 and R₃/R₄ =1.235. -Refer to Figure 1. The type of filter is a

Figure 1 Stage 1: DF = 1.848 and R₁/R₂ = 0.152; stage 2: DF = 0.765 and R₃/R₄ =1.235. -Refer to Figure 1. The ideal roll- off rate is

The damping factor, DF, is determined by the number of poles in a filter.

Figure 3 -Refer to Figure 3. The last stage is

A basic RC (one R, oneC)filter has a -20dB/decade roll- off.

Figure 4 A test of a filter using an oscilloscope -Refer to Figure 4. The oscilloscope needs to

Figure 2 Note that the capacitors have different values. -Refer to Figure 2. The circuit is a

A single- pole filter cannot be used as a notch filter.

The Q of a band- pass filter is inversely proportional to the damping factor.

Figure 2 Note that the capacitors have different values. -Refer to Figure 2. Assume section 1 and section 2 are exchanged. This will

The Chebyshev filter is noted for its flat response in the passband.

Figure 2 Note that the capacitors have different values. -Refer to Figure 2. The fc for the second section is

A biquad filter has both low- pass and high- pass outputs.

The damping factor, DF, affects an active filter's response characteristics.

The bandwidth of a basic band- pass filter is measured between the center frequency and a critical frequency.