Wise Warthog Logo

Review of Winton: Professors Notes BJT Circuit Analysis

Download Professors Notes BJT Circuit Analysis (Part of the supplemental material for the course ECE3424 Intermediate Electronic Circuits, 414 KB, 37 pages)

You can also visit the course page: ECE3424 Intermediate Electronic Circuits, Professor Ray Winton, Mississipi State University, Department of Electrical and Computer Engineering. The links to the supplemental material are roughly at the middle of the page. The comment for the BJT notes says that it "emphasizes fast rough methods of analysis (analysis by inspection)" - this sounds good to me - and that it "needs update" - this sounds not so good, but after reading the notes I think they are quite nice even in their current state.

After an introduction to the BJT transistor, Winton discusses the design of the correct bias network for the transistor. He provides several examples with step by step calculations, emphasizing how the use of suitable approximations can help you get results very quickly - “More precise assessments can be readily obtained from a simulation analysis using SPICE”. I think this is an excellent way to design analog circuits.

Winton discusses the Ebers-Moll model, the Early effect and the small signal model, then he analyzes the three configurations (common emitter, common collector and common base). Again he shows how you can greatly simplify the calculations by some approximations. What I have been missing are a few words about the practical importance of each configuration – after reading the notes you will know how to analyze each of them, but not when they should be used. You can find a good comparison of the three configurations in Greg Kovacs EE113 Course Notes Electronic Circuits, p.61.

You may also be interested in some other Recommendations for Bipolar Junction Transistor Resources.

Wise Warthog Site Overview:

General: Forums, Tips on how to seek Advice

Practical Electronics: Books and Other General Resources, Troubleshooting, Introductions to Oscilloscopes, Breadboarding and Prototyping

Foundations: Basic Linear Circuit Analysis, Analysis and Design of Electronic Circuits, Introductions to Analog IC Design, Circuit Simulation with SPICE

Devices: General Op Amp Resources, Op Amp Applications, Resistors, Capacitors, Diodes, Bipolar Junction Transistors

Application Notes: Analog Devices Seminar Notes, Columns and App Notes by Bob Pease, App Notes by Jim Williams, E-books and App Notes from Texas Instruments

Mathematics: Complex Numbers, Calculus, Mathematics for Physics and Engineering

Wise Warthog - Learning Resources
for Analog Electronics and more