Quiz 15: Active Filters

Figure 4 A test of a filter using an oscilloscope -Refer to Figure 4. The signal on the X channel of the oscilloscope is a(n)

The critical frequency of a high- pass filter is where the response is

A high Q bandpass filter

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 with values as given. R3 should have a value of

The biquad filter has

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 with values as given. R1 should have a value of

Figure 5 Response curve for three different filters -Refer to Figure 5. The response labeled "A" represents a

A low- pass filter has a critical frequency of 10 kHz. The bandpass is

Figure 5 Response curve for three different filters -Refer to Figure 5. The response labeled "B" represents a

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

Figure 3 -Refer to Figure 3. This type of filter is called a

The bandwidth of a bandpass filter is measured at

The best response to use for pulses is

A basic one- pole RC low- pass filter has fc = 5.9 kHz using a 0.01 µF capacitor. The resistor value is

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. Assume Vin = 1.0 Vpp sine wave at 20 kHz. At this frequency, Vout is approximately

Figure 2 Note that the capacitors have different values. -Refer to Figure 2. Assume the capacitors in section 1 are made larger. This change will

Figure 4 A test of a filter using an oscilloscope -Refer to Figure 4. The block with the ? on it represents a

Figure 3 -Refer to Figure 3. An advantage of this type of filter is that it

Assume a high- pass filter and a low- pass filter are cascaded to form a band- pass filter. The upper cutoff frequency will be determined by

Figure 4 A test of a filter using an oscilloscope -Refer to Figure 4. The input signal to the filter (Vin)is a(n)