Define bandwidth using the typical response of an audio amplifier.
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15. Design an inverting amplifier to have a gain of 20 using the MCP6021 and a single +5 V supply. What will be the typical 3-dB bandwidth of the amplifier?
4) Five audio channels each with a bandwidth of 20 kHz, are sampled at a 10% higher than the Nyquist rate and quantized using a 16 bit quantizer. These five channels are then time multiplexed. a. Find the overall bit rate of the output of multiplexer (4 Marks) and b. Find the minimum bandwidth required to transmit the output of the multiplexer when using 16-QAM with a raised cosine filter with a rolloff factor of 0.25 (2 Marks) 4) Five...
5.2-1 A compact dise (CD) records audio signals digitlly by using PCM. Let the au bandwidth be 15 kHz. (a) If the Nyquist samples are uniformly quantized into L 65,5 (b) If the audio signal has average power of 0.1 W and peak voltage of 1 V, find the resulting (c) Determine the number of binary digits per second (bit/s) required to encode the audico (d) For practical reasons discussed in the text, signals are sampled at a rate well...
QI (a) () Design an active filter using non-inverting amplifier that will produce a frequency response as shown in Figure Ql(a). The bandwidth of the filter is 30 kHz. Use a capacitor value of 10 nF. (9 marks) Draw the circuit and clearly label it. (5 marks) (b) Derive the transfer function of the filter in Q1(b). (6 marks) Av (dB) 28 dB 25 dB - 20 dB/decade + 20 dB/decade - 1 1 35 kHz 40 kHz Figure Qi(a)...
DC Coupled Wideband Feedback Amplifier Voltage-Shunt Feedback Amplifier Current-Shunt Feedback Amplifier Voltage-Series Feedback Amplifier Using the four amplifiers above, analyze the answers to the questions below. 1) Which amplifier has the largest gain-bandwidth product referring to your table of gain bandwidth products? Answer: 2) On the basis of experimental results, state the effects of negative feedback on gain, and input resistance. Answer: 3) State the difference between current and voltage feedback. Answer:
8. Determine the approximate bandwidth required for a video display amplifier if the resolution of the display is 600 pixels by 800 pixels and the refresh rate is 60 frames/second. 9. Using the LM3900, design an inverting amplifier that operates from a single +9 V battery, has an inverting voltage gain of 25, an input impedance of at least 20 kΩ, and a lower break frequency of no more than 200 Hz. Sketch the circuit and label component values
7.23) For a BJT amplifier the gain bandwidth product (ft) is 400 MHz and the high cut-off frequency is 100 MHz, with a current gain of 100 a) Calculate the We value of this model. B) Using drawing method of the model find the possible values that determine wp by drawing the model. c) If 2 of this amplifier model were consecutively connected what is the total high cut-off frequency?
An audio amplifier, represented by the AC source and the resistor R in the figure below, delivers alternating voltages at audio frequencies to the speaker. If the source puts out an alternating voltage of 12.0 V (rms), the resistance R is 8.20 Ω, and the speaker is equivalent to a resistance of 12.4 Ω, what is the time-averaged power delivered to the speaker?
An audio amplifier, represented by the AC source and the resistor R in the figure below, delivers alternating voltages at audio frequencies to the speaker. If the source puts out an alternating voltage of 18.0 V (rms), the resistance R is 8.20 Ω, and the speaker is equivalent to a resistance of 10.3 Ω, what is the time-averaged power delivered to the speaker?
Typed please. What factors limit the maximum output power for an audio amplifier, and why?