Electrical and Computer Engineering

ELEC 305  Electronics I   Operational amplifiers. Analysis of diode circuits.  Power supply design.  Transistor biasing.  Graphical analysis of transistor circuits.  Small-signal transistor circuit models.  Analysis and design of multistage BJT amplifiers.  Three hours a week. Fall (Cr. 3) 

Prerequisite: ENGS 203 

Course Goals: 

1.      To instill an understanding of how op amps, diodes and bipolar transistors function and how they can be approximated by mathematical models.

2.      To apply knowledge of mathematics, science and engineering to the understanding (analysis) of electronic circuit operation.

3.      To design analog electronic circuits, noting tradeoffs.

4.      To utilize computer programs to analyze and assist in designing electronic circuits.

5.      To hone problem-solving and written-communication skills in presenting a logical, lucid flow in the solution of homework and test problems. 

Course Objectives: 

The student will be able to: 

  • Grok the four amplifier types
  • Analyze op amp circuits using either the ideal or a real op amp model.
  • Analyze passive diode circuits, including clipping and clamping, utilizing any one of four diode models.
  • Design and analyze a zener-regulated DC power supply.
  • Calculate the Q-point values of a BJT.
  • Calculate the small-signal gain of BJT amplifiers.
  • Design a multistage BJT amplifier (w/o feedback).
  • Use PSpice to simulate/analyze/design electronic circuits.

Course Syllabus 

Text: 

Microelectronic Circuits, 4th edition; A Sedra, K Smith; Oxford U Press; 1998 [chapters 1-4] 

Topics [approximate hours in brackets]: 

1.      Amplifier types and typical frequency responses; digital logic inverter [3 lectures]

2.      Operational amplifiers: Ideal (inverting and non-inverting configurations, integrator, differentiator, difference amplifier); Real (finite open-loop gain and bandwidth, large-signal performance, offset voltage, input bias currents) [7 lectures]

3.      Diodes: exponential and piecewise-linear models and graphical characteristics; DC and AC analysis [3.5 lectures]

4.      Zener diode; semiconductor physics (electrons, holes, energy bands, recombination, PN diode) [2.5 lectures]

5.      Half-wave, full-wave and bridge rectifiers, ripple, capacitive filter [4 lectures]

6.      Design of zener-regulated power supply [2.5 lectures]

7.      Clipping and clamping diode circuits [1.5 lectures]

8.      Theory of the BJT (large-signal model and graphical analysis, regions of operation); Biasing the BJT [5 lectures]

9.      Small signal analysis (h-parameter and hybrid-pi models, Thevenin equivalent circuits looking into terminals of a BJT in a circuit [3 lectures]

10.  Design of multistage BJT amplifiers [6 lectures]

11.  Tests [4 hours of tests and a two-hour final exam] 

Computer usage: Four graded PSpice homework assignments 

ABET category content: Engineering Science (1.5 credits)

                                             Engineering Design (1.5 credits) 

Prepared by: Dr George Prans                                        Date: Spring 2001