An excellent video on soldering techniques. SMD soldering is simple! Even if you don’t own a hot air station, the techniques demonstrated here are very helpful to anyone interested in SMD soldering.
An other great Youtube video by Afrotechmods.
The basics of how transformers work, where to shop for step down mains transformers, and how to wire one up to mains voltages.
“Exploding Capacitors in High Speed” is the EEVblog episode #42.
Dave blows up some tantalum and electrolytic capacitors in front of his new 300fps Sanyo Xacti high speed camcorder!
Basics of Ferrite Beads for Filters, EMI Suppression, Parasitic oscillation suppression / Tutorial
This video discusses the basics of ferrite beads, and their uses for basic filtering applications. It discusses and demonstrates how ferrites act as resistors at high frequencies, and how this is used for EMI/RFI Suppression, improved power supply filtering, parasitic oscillation suppression, and others. The affect of the frequency dependent resistive characteristic of the ferrite beads is demonstrated by showing its effect on a swept RF signal, its effect on the rise/fall time of a digital signal, and its effectiveness of eliminating parasitic oscillation.
This video gives the basics of the bias point, also called operating or quiescent point, of a bipolar transistor (BJT). For a BJT, there are three operating regions: Cutoff, Active and Saturation