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Devry ECET220 iLab week 2

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Subject: Engineering
Due on: 01/31/2015
Posted On: 01/17/2015 11:14 PM

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Laboratory Report Cover/Worksheet
DeVry University
College of Engineering and Information Sciences



Course Number:ECET220

Professor:

Laboratory Number: 2

Laboratory Title:Analysis of BJT Amplifier Classes of Operation using Simulation and Actual Construction

Submittal Date:

Objectives:

1. To analyze a BJT Amplifier Classes Amplifier comprising of two capacitors (C) and resistors (R) and measure voltage drops and currents at different locations.

2. To theoretically calculate and verify the circuit using Ohm’s law and Kirchhoff’s law, which were learned in previous courses.

3. Determine the voltages (VE, VC, VB) with respect to the circuit common. Measure and verify the same using the simulation.

4. Determine if the output voltage is in-phase or out-of-phase with its input waveform.

Results:

The theoretical calculations, simulation, and construct for the DC measurements were as expected. The AC portion were the same for the theoretical and simulation, however for the build they were not as expected. It is possible the voltage was not correct, so the results were skewed.

Conclusions:

The analysis of the BJT Amplifier confirmed the theoretical calculations and simulation to be very close to accurate. The construct confirmed the DC portion of the BJT Amplifier, and if the AC construct is accurate, the construct will confirm the AC portion of the BJT Amplifier.



Team:

ECET220

Name

Program

Signature

Name

Program

Signature

Name

Program

Signature


Observations/Measurements:

III. A. 1. Theoretical analysis of the circuit:

Calculate Voltages Below

Voltages (V)

Voltage from emitter to common (VE) =

Voltage from collector to common (VC)

Voltage from base to common (VB)

Calculate: Voltage drop between collector and emitter (VCE)

Calculate: Voltage drop between base and emitter (VBE)

Voltage across the collector resistor (R2)

Calculate Current Below

Collector current

Table 1

III. B. 2. Multisim simulation and circuit measurements:

Calculate Voltages Below

Voltages (V)

Voltage from emitter to common (VE)

Voltage from collector to common (VC)

Voltage from base to common (VB)

Calculate: Voltage drop between collector and emitter (VCE)

Calculate: Voltage drop between base and emitter (VBE)

Voltage across the collector resistor (R2)

Calculate Current Below

Collector current


Table 2

III. B. 5. Paste input and output waveforms from oscilloscope below:

Input waveform:

Output waveform:

a. What is the peak to peak voltage of Vin from the Oscilloscope waveform?

Peak to peak voltage of Vin =

b. What is the peak to peak voltage of Vout from the Oscilloscope waveform?

Peak to peak voltage of Vout =

c. Are the Vin and Vout waveforms in phase or out of phase?

Are Vin and Vout waveforms in phase?

d. Calculate the voltage gain (AV) of this circuit?

voltage gain (AV) =


III. B. 7. Paste input and output waveforms from oscilloscope below

Input waveform:

Output waveform:

a. What is the peak to peak voltage of Vin from the Oscilloscope waveform?

Peak to peak voltage of Vin =

b. What is the peak to peak voltage of Vout from the Oscilloscope waveform?

Peak to peak voltage of Vout =

III. C. 1. Place a digital photo of your circuit below:

III. C. 3. Hardware circuit and circuit measurements:

Calculate Voltages Below

Voltages (V)

Voltage from emitter to common (VE)

Voltage from collector to common (VC)

Voltage from base to common (VB)

Calculate: Voltage drop between collector and emitter (VCE)

Calculate: Voltage drop between base and emitter (VBE)

Voltage across the collector resistor (R2)

Calculate Current Below

Collector current

Table 3

III. C. 4. Paste input and output waveforms from oscilloscope below:

Input waveform:

Output waveform:

a. What is the peak to peak voltage of Vin from the Oscilloscope waveform?

Peak to peak voltage of Vin =

b. What is the peak to peak voltage of Vout from the Oscilloscope waveform?

Peak to peak voltage of Vout =

c. Are the Vin and Vout waveforms in phase or out of phase?

Are Vin and Vout waveforms in phase ?

d. Calculate the voltage gain (AV) of this circuit?

voltage gain (AV) =

III. C. 6. Paste input and output waveforms from oscilloscope below:

a. What is the peak to peak voltage of Vin from the Oscilloscope waveform?

Peak to peak voltage of Vin =

b. What is the peak to peak voltage of Vout from the Oscilloscope waveform?

Peak to peak voltage of Vout =

IV. Summary – Please answer the following questions:

a) Did your theoretical calculations closely match the results obtained from the Multisim simulation? (Yes, No)

b) Did your theoretical calculations closely match the results obtained from the Proto Board circuit? (Yes, No)YES and No

c) Did your results obtained from the Multisim simulation closely match the results obtained from the Proto Board circuit? (Yes, No)YES

Tags week ilab ecet220 devry voltage peak calculate collector circuit common emitter oscilloscope waveform drop voltages vout base current waveforms phase amplifier theoretical construct input output calculations voutfrom gain simulation vinfrom

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DJ--ecet220_w2_ilab_worksheet.docx (4378.51 KB)
Preview: verify xxx circuit xxxxx Ohm’s law xxx Kirchhoff’s law, xxxxx were xxxxxxx xx previous xxxxxxx Determine the xxxxxxxx (VE, VC, xxx with xxxxxxx xx the xxxxxxx common Measure xxx verify the xxxx using xxx xxxxxxxxxx Determine xx the output xxxxxxx is in-phase xx out-of-phase xxxx xxx input xxxxxxxx Results:The theoretical xxxxxxxxxxxxx simulation, and xxxxxxxxx for xxx xx measurements xxxx as expected xxx AC portion xxxx the xxxx xxx the xxxxxxxxxxx and simulation, xxxxxxx for the xxxxx they xxxx xxx as xxxxxxxx It is xxxxxxxx the voltage xxx not xxxxxxxx xx the xxxxxxx were skewed xxxxxxxxxxxxxxx analysis of xxx BJT xxxxxxxxx xxxxxxxxx the xxxxxxxxxxx calculations and xxxxxxxxxx to be xxxx close xx xxxxxxxx The xxxxxxxxx confirmed the xx portion of xxx BJT xxxxxxxxxx xxx if xxx AC construct xx accurate, the xxxxxxxxx will xxxxxxx xxx AC xxxxxxx of the xxx Amplifier Team:ECET220NameProgramSignatureNameProgramSignatureNameProgramSignatureObservations/Measurements:III x 1 xxxxxxxxxxx xxxxxxxx of xxx circuit:Calculate Voltages xxxxxxxxxxxxx.....
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