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About my Free Virtual Learning System (VLS).  Please provide feedback via      

Virtual Skill testing + Virtual Laboratory Experience + Links to Top Theory Sites = Best Free Online VLS.

This course is a Virtual Laboratory tutorial in electronics.  Over the last decade,  I have produced a set of free online circuit simulations and animations that constitute a interactive virtual laboratory for students studying electronics or preparing for an IT career .  My virtual interactive circuit troubleshooting exercises cover only a small sample of circuits covered in must texts or college courses. This selection of circuits ranges from simple resistive circuits thru advanced operational amplifiers, digital circuits and computers .   I believe that those who  master troubleshooting my narrow range of virtual circuits or systems will develop the skills necessary to troubleshoot a wide range of circuits and systems that they will be confronted with now and in the future.  I feel quite certain that someone who could not perform the majority of my virtual troubleshooting exercises would be in need of further training in order to become a competent electronics troubleshooter.  This person could benefit from my free virtual laboratory course. 

I provide a reading list for each topic that a student can use to learn the relevant subject matter.  This site and my virtual electronics kits test your electronics skill.  My digital simulations create screens of data in binary format that show the status of my virtual computer and many digital circuits.    



Lecture Text Transistor


Free Class Books
(PDF files)

Electronic Concepts

Force Fields Visualized


My Free Online e-Books(Webs)

  Basic Electronics

 Electronic Troubleshooting

  Gif Circuits

Electronic Circuits with Faults 


My Free Downloads 

 Virtual electronic kits




Site Linker
Our optional reading list.
Site Linker allow me to check all the links that several of my Web site uses at a single location.






Transistor Lecture

To get quick overview of my course go Radio Slide Show  and download Audio Version of Electronic Concepts and sit back and listen 40 minute lecture covering the analog portion of my WEB.  Read pages 26 thru 30.


1. Download latest version of FREE Kit 7  and Perform all exercises.

2. Read Chapter 12,13 and of Electronic Concepts.


3. Optional: Continue on with exercises below:

Note:  This ends Analog Portion of Course; however I have released a kit for my future Digital Course.

 Digital Kits at :


Read Chapter 12,13 and of Electronic Concepts

MP3 Lecture
Transistor Lecture, Text Only


Common Base Amplifier
Shows Current Amplification 
Screenshot of one of the animations in my electronics course material.





Common Emitter Amplifier
Shows both Voltage and Current Amplification 
Screenshot of one of the animations in my electronics course material.






Common Emitter AC Signal Amplifier
Shows Clipping that occurs due to Saturation and Cutoff 

More Circuits Below

AC Amplifier with Faults (Oscilloscope Animation) 

AC Amplifier with Faults 

Multi-vibrator( Animation and Troubleshooting)

Simple Voltage Regulator with Faults


Advanced Circuits with Simulated Faults Below

Three Stage High Gain Amplifier with Faults & MP3 Lectures

Regulated Power Supply with Faults & MP3 Lectures


Transistor Tutorials Below (Links)

Transistor Physics and Theory 

Transistor Tutorial



Next Lesson 



Electronics, Physics, Mathematics  for the vocational student:  Tutorial provides unique non-engineering, calculus free technical education.   Click here to see all our publications                   

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Last modified: Monday July 07, 2014.