May I get some advice for this lab? I'm really confuse the theory and it's calculation.
Procedures:
1. Construct the circuit shown in figure 11 on a breadboard carefully.
2. Before connect the function generator to the circuit, perform DC analysis for the entire circuit and record your answers in the Table 1 below.
3. Next, connect the function generator to the circuit.
4. Set the function generator to output a sine wave at 10 kHz and amplitude equal to 60 mVpp. Use a scope to ensure the settings are correct.
5. Turn on the output of the function generator. Measure and record all the AC values in Table 2 below using the scope.
6. Using the measured values of VB(Q1) and VC(Q1), calculate AV(Q1). Insert this value in the measured section of Table 2.
7. Using the measured values of VB(Q2) and VC(Q2), calculate AV(Q2). Insert this value in the measured section of Table 2.
8. Using the measured values of VB(Q1) and VC(Q2), calculate AVT. Insert this value in the measured section of Table 2.
Figure 11 A 2-satge common-emitter amplifier circuit
Questions:
1. Perform DC analysis on circuit in this lab by filling up table 1 below. Be sure to show all your steps and calculations.
Table 1 DC analysis values
2. Perform AC analysis on the circuit in this lab by filling up table 2 below. Be sure to show all your steps and calculations.
Table 2 AC analysis values
3. Determine the values of Zbase for Q2, Zin for Q2 and rc for stage 1. Calculate Av1.
4. Determine the values of rc for stage 2. Calculate AV2.
5. Calculate AVT.
6. Calculate the percentage error by comparing the values of AVT measured vs AVT calculated. Explain discrepancy in the results between measured and calculated.