b Complete the table below R C 5 in pp V out pp V Expected Measured Gain Gain

B complete the table below r c 5 in pp v out pp v

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b.Complete the table below. R C 5 ( ) in pp V ( ) out pp V Expected Measured Gain Gain -- -- _22 mVpp _ 320 mVpp _ _20 _ _ _14.6 _ 1.2 k 10 F _22.3 mVpp _1.03 Vpp _ _50 _ 46.2 -- 10Fc.Beginning with pin 1 an 8 open and the frequency generator set to 10 mVp at 1 kHz, use the oscilloscope to measure the voltage values. Calculate the gain of the amplifier, out. Record the results on the sheet. d.Continue this procedure until you have determined the three gain values. 22.7 mVpp 3.74 Vpp _ _200 _ 164.8 V in v A v
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e.Were there any problems with the different gain values? If so, explain the symptoms and how to correct the problem.E.Determine and plot the audio amplifier’s frequency response. Determine midband gain, 3-dB bandwidth, critical frequencies and roll-off rate. Compare the results to the data sheet.a.Using the information above, set the gain of the amplifier to 20.b.Set the output of the frequency generator to a sine wave with amplitude of 100 mV at 1 (one) Hz.c.Complete the table below.f (Hz)()in ppV()outppVGain1101 mV1.70316.910104 mV1.66816.04100101 mV1.64216.31k103 mV1.60415.610k106 mV1.07410.1100k101 mV1.57615.6500k104 mV1.53414.8d.With the frequency set to 1 Hz, use the oscilloscope to measure the above values and calculate the gain. Note that very low or high frequencies may be difficult to measure.e.Continue changing the input frequency by a power of 10 (10, 100, etc.) until you reach 500kHz.f.Use a piece of graph paper to plot the results. A work sheet can be found in Doc Sharing, week 4 -- “graph_paper.doc”.F.Connect an input circuit such as a frequency generator and a microphone and a load such as a speaker verify the operation and troubleshoot any problems.a.Prototype the advance amplifier circuit for this step. Set the gain to20.b.Connect a frequency generator set to a sine wave at 400 mV peak and 100 Hz to the input of the circuit. Connect an 8-ohm speaker tothe output of the circuit. Set 1Rto it highest value.c.Write down your observations. Record the information below.
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d.Apply power and record what you hear. Slowly decrease 1Rand record any changes. Continue to decrease. Use an oscilloscope to observe the output signal. What is happening to the output waveform?e.Change the input frequency to 1 k Hz and 10 kHz and record the change. 1 R f. Change the frequency generator to a square wave and repeat the steps above. Record the results. g. Remove the frequency generator and connect a dynamic microphone to the input. Test the circuit and record the results. Vary 1 R for maximum output. Can you get maximum gain from the circuit without oscillation?
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Part B - More LM386
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