Wise Warthog Logo

Review of Afrotech: Electronics Tutorial Videos

Go to Electronics Tutorial Videos to view the videos.

In these videos you will find some very interesting facts about many different areas of analog electronics, especially if you are an electronics hobbyist. If you are seriously studying electronics, you may still learn a lot from the videos, but in this case you might prefer the more systematic introduction to electronics in the Fiegenbaum videos (or by Kuphaldt if you prefer e-books). But no matter whether you are a hobbyist or a student, you should scroll down the page and take a look at the “Test Equipment” videos and at “It's not the volts that kill you, it's the amps”. This video contains some very valuable safety advice (the title is a bit misleading – please watch the video and it will become clear). For much more safety information, I highly recommend to look at the Electrical Safety chapter from Kuphaldt’s book (see link above).

The “Fun” videos are indeed great fun to watch, but please be very careful. As he says at the end of the “Ultracapacitors” video: “Don’t do anything I did in this video !” (I second this advice !) The problem with the experiments that are shown in this video are not so much the direct effects of the electricity (the voltages are not high enough to harm you) but the heat that is generated. The sparks that are flying around look quite spectacular, but I would be even more concerned about another risk: If you heat up anything that contains any sort of liquid (or just moisture), the liquid may turn into vapor instantly and from the resulting pressure the whole thing may blow up in your face, even more so than in the “Exploding Electronic Components” video. In case you should still think of trying anything of this at home, please at least wear safety goggles. Or, better yet, seek the assistance of someone who has experience with physics or chemistry experiments. Finally a quote from Kuphaldt’s safety chapter I linked above: “…it is still an excellent idea to keep one's hands clean and dry, and remove all metal jewelry when working around electricity. Even around lower voltages, metal jewelry can present a hazard by conducting enough current to burn the skin if brought into contact between two points in a circuit. Metal rings, especially, have been the cause of more than a few burnt fingers by bridging between points in a low-voltage, high-current circuit.” A low-voltage, high-current circuit - this is exactly what is demonstrated in the "Ultracapacitors" video.

You should also take a look at some recommendations for other books on practical analog electronics.

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