Module 8 Lab (2)

(b) Analyse and obtain the transfer function for the filter as shown in Figure Q2(b). R2 R1 Vin Vo Figure Q2 (b)

(b) Analyse and obtain the transfer function for the filter as shown in Figure Q2(b). R2 R1 Vin w Vo Figure Q2 (b)

Explain how the Active Low Pass Filter works in detail, as shown in a drawing

Q#3: Discuss the surge current in the capacitor-Input filter with the help of schematic diagram.

Communication question

TOPIC: FREQUENCY MODULATION & PHASE MODULATION Provide a simple sample problem with correct solution regarding deviation ratio.

Draw a low pass filter and a high pass filter

Six similar attenuators are used in an audio design and are linked in a cascade. The total attenuation is 80 decibels. The first section of the attenuator circuit has a 20 mV input. Determine (i) the attenuation in decibels provided by each individual attenuation stage, (ii) the output in volts of the final stage (iii) the output in volts of the fifth stage.

An FIR bandpass filter is to be designed to meet the following frequency response specifications:and sampling frequency (Fs) is 10 KHzPassband frequencies are: 0.339 - 0.709 (normalizedTransition width:  0.017 (normalized) Stopband deviation:  0.001Passband deviation:  0.05What is the Stopband frequency (fs2) ?

Explain why it is necessary to add capacitor in Low pass filter draw circuit diagram and explain w.r.t combination of Capacitor and RL.

Define and differentiate the following terms. Also Draw plots where required. You can use different symbols to denote each term a.      Gain Cross over Frequency VS.Phase Cross over Frequency b.     Phase Margin VS. Gain Margin c.      Three Conditions of Stability in terms of phase cross-over frequency and gain-cross over frequency. Three Conditions of Stability in terms of phase margins and gain margins

Choose a TRUE statement regarding lead compensator design via frequency response technique Select one: O a increases the phase margin O b. all statements O c increases bandwidth O d.increases gain crossover frequency e. increases the phase margin frequency

Q-4) For the bandpass fiter cireuit given in Figure-1, please find the followings, A) Transfer function. B) Center frequency C) Bandwidth 2F Vs 2F V.

4. Part A: Filters 1. 3. Assignment#5 Refer to Electronic Devices, Floyd chapters 15, 16 and 17 2. The term pole in filter terminology refers to (a) a high-gain op-amp (c) a single RC circuit (b) one complete active filter (d) the feedback circuit A band-pass response has (a) two critical frequencies (c) a flat curve in the passband (b) one critical frequency (d) a wide bandwidth When a low-pass and a high-pass filter are cascaded to get a band-pass filter, the critical frequency of the low-pass filter must be (a) equal to the critical frequency of the high-pass filter (b) less than the critical frequency of the high-pass filter (c) greater than the critical frequency of the high-pass filter When the gain of a filter is minimum at its center frequency, it is (a) a band-pass filter (b) a band-stop filter (c) a notch filter (d) answers (b) and (c)

Design a 3 Band Equalizer based on the following requirements. Use standard component values on your circuit design. The design specification values have a tolerance of +/- 3% of the rated value for cut/boost while a tolerance of+/- 10% of the rated value for frequency values

Response curves for second-order filters are shown in Figure 3. Identify each as Butterworth, Chebyshev, or Bessel. (a) -40 dB/decade (b) (d) out V out -40 dB/decade decade

Communication

(b) In a filter, explain what happens at the cut–off frequency.

Find theoretical expressions for the transfer function and cutoff frequencies of the circuit in figure 1. ( RL = 4.2k other values is up to you)

-3 input devices - Functions of: - Capacitive Switch filter - Bounce Eliminator - Signal Converters

1. The term pole in filter terminology refers to (a) a high-gain op-amp (b) one complete active filter (c) a single RC circuit (d) the feedback circuit 2. A single resistor and a single capacitor can be connected to form a filter with a roll-off rate of (a) -20 dB/decade (b) -40 dB/decade (c)-6 dB/octave (d) answers (a) and (c) 3. A band-pass response has (a) two critical frequencies (b) one critical frequency (c) a flat curve in the passband (d) a wide bandwidth 4. The lowest frequency passed by a low-pass filter is (a) 1Hz (b) О Hz (c) 10 Hz (d) dependent on the critical frequency 5. The quality factor (Q) of a band-pass filter depends on (a) the critical frequencies (b) only the bandwidth (c) the center frequency and the bandwidth (d) only the center frequency 6. The damping factor of an active filter determines (a) the voltage gain (b) the critical frequency (c) the response characteristic (d) the roll-off rate 7. A maximally flat frequency response is known as (a) Chebyshev (b)…

a) Design a Butterworth band-pass filter using the TL084 amplifier and draw it with the following specifications:Lower frequency= 60 HzUpper Frequency = 5K HzQ=?Resonant frequency =?

1.Advantage of the filter below is Vin R Vo a. high gain c. high - frequency signal limit b. no- need for voltage supply d. reducing of load effect

why the frequency fT is called the ? unity gain frequency

What is the function of a low pass filter? Draw a diagram of a simple low-pass filter using a capacitor and a resistor.

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