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Two Stage BJT Amplifiers - Electrical and Computer Engineering - Lab Handouts, Lecture notes of Electrical Engineering

Some concept of Electrical and Computer Engineering are Active Filters, Build Inverter in Schematic View, Circuit Structure, Operational Amplifier Performance, Overview of Solaris, Simulations Instructions. Main points of this handout are: Two Stage Bjt Amplifiers, Serial-Shunt Feedback Amplifier, Design Steps, Operating Point, Dc Bias Values, Open Loop Gain, Analytical Values, Waveform of Real Circuit, Bias Current, Bias Voltage

Typology: Lecture notes

2012/2013

Uploaded on 05/18/2013

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Electrical & Computer Engineering
ECE-E421: Advanced Electronics I
Lab#2: Two Stage BJT Amplifiers
In this lab, you will:
1.DESIGN 2.SIMULATE 3.BUILD AND TEST
a two stage BJT feedback amplifier.
Consider a serial-shunt feedback amplifier shown below:
The analysis is given in the text book as EXAMPLE 8.4 starting on page 825. However you will change the
design by altering the DC operating point as:
c1
I =1.5mA
and
c2
I =0.6mA
.
The design steps are as follows:
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Electrical & Computer Engineering

ECE-E421: Advanced Electronics I

Lab#2: Two Stage BJT Amplifiers

In this lab, you will:

1.DESIGN 2.SIMULATE 3.BUILD AND TEST

a two stage BJT feedback amplifier.

Consider a serial-shunt feedback amplifier shown below:

The analysis is given in the text book as EXAMPLE 8.4 starting on page 825. However you will change the

design by altering the DC operating point as: Ic1 =1.5mA and Ic2 =0.6mA.

The design steps are as follows:

1 Repeat calculations to establish these DC bias values. 2 Simulate the DC network to establish/adjust the bias conditions. The schematic for this sim is:

3 Proceed through the AC analysis for open loop gain using circuit below, to establish A, Ri, Rout…etc.

The open loop gain is required to be round 1000. Rload  2 k .Simulate the circuit to confirm the

analytical values.

4 Process through the AC analysis for closed loop gain using circuit below, to establish Af, Rif, Rout…etc. The closed loop gain is required to be around 50-100. Simulate the circuit to confirm the analytical values.