Reference no: EM131819

EXPERIMENT

Use the transistor board provided

DC Analysis

A1) Connect a 15 volt supply to VCC and ground and accurately set the supply using the multimeter.

A2) Using a DMM measure the DC voltages on V_B , V_C and  V_E.

A3) Repeat these measurements using the oscilloscope.

A4) Using the mathematical analysis as described in Malvino calculate the expected DC values.

A5) Compare your measured and calculated results.

AC Analysis Gain at Midband (with bypass capacitor in circuit)

B1) Connect the bypass capacitor using the switch.

B2) Connect a signal generator to the input of the amplifier.

B3) Set the frequency of the generator to 20mV pk to pk and 1 kHz.

B4) Using the oscilloscope and two channels (channel 1 on output of signal generator, and the second channel on the waveform to be measured, sketch the waveforms at V_b, V_e, V_c and Vout and note the DC and AC values that appear there.

B5) What is the voltage gain of this circuit (Av)?

B6) Analyse this circuit using the AC models described in Malvino.

B7) Compare the theoretical and measured values.

B8) Explain why there is a phase shift between Vin and Vout.

AC Analysis Gain at Midband (with no bypass capacitor in circuit)

C1) Disconnect the bypass capacitor using the switch

C2) Connect a signal generator to the input of the amplifier

C3) Set the frequency of the generator to 20 mV pk to pk and 1 kHz

C4) Using the oscilloscope and two channels (channel 1 on output of signal generator, and the second channel on the waveform to be

measured, sketch the waveforms at V_b, V_e, V_c and Vout and note the DC and AC values that appear there.

C5) What is the voltage gain of this circuit (Av)?

C6) Analyse this circuit using the AC models described in Malvino.

C7) Compare the theoretical and measured values.