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# 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)
(Multiple Choice)

A

The critical frequency of a high- pass filter is where the response is
(Multiple Choice)

C

A high Q bandpass filter
(Multiple Choice)

B

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
(Multiple Choice)
(Multiple Choice)
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
(Multiple Choice)
Figure 5 Response curve for three different filters -Refer to Figure 5. The response labeled "A" represents a
(Multiple Choice)
A low- pass filter has a critical frequency of 10 kHz. The bandpass is
(Multiple Choice)
Figure 5 Response curve for three different filters -Refer to Figure 5. The response labeled "B" represents a
(Multiple Choice)
Figure 2 Note that the capacitors have different values. -Refer to Figure 2. The fc for the first section is
(Multiple Choice)
Figure 3 -Refer to Figure 3. This type of filter is called a
(Multiple Choice)
The bandwidth of a bandpass filter is measured at
(Multiple Choice)
The best response to use for pulses is
(Multiple Choice)
A basic one- pole RC low- pass filter has fc = 5.9 kHz using a 0.01 µF capacitor. The resistor value is
(Multiple Choice)
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
(Multiple Choice)
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
(Multiple Choice)
Figure 4 A test of a filter using an oscilloscope -Refer to Figure 4. The block with the ? on it represents a
(Multiple Choice)
Figure 3 -Refer to Figure 3. An advantage of this type of filter is that it
(Multiple Choice)
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
(Multiple Choice)
Figure 4 A test of a filter using an oscilloscope -Refer to Figure 4. The input signal to the filter (Vin)is a(n)
(Multiple Choice)
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## Filters

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