Sinusoidal PWM, current control and switching logic (PDF 125p)
In contrast to grid connected ac motor drives, hardly variable in speed, power electronic devices (e.g. inverter), providing voltage supply variable in both frequency and magnitude, are used to operate ac motors at frequencies other than the supply frequency.
An Introduction to Delta Sigma Converters
When looking for an introduction to delta sigma conversion I found that most explanations were from a very theoretical point of view. It took me a while to understand how Delta Sigma converters really work. So I decided to write this introduction for people who prefer circuit diagrams to reading abstract equations.
PWM Signal Generators
PWM, or Pulse Width Modulation, is a method of controlling the amount of power to a load without having to dissipate any power in the load driver.
RFIC Theory Tutorials
RFIC notes on Theory.
RFIC Sub Circuit Tutorials
RFIC Sub Circuit Tutorials.
RFIC Circuit Tutorials
RFIC Circuit notes.
RF and Microwave Theory Tutorials
Notes on RF and Microwave theory.
RF Microwave Circuit Tutorials
Notes on RF Microwave Circuit.
RF Systems and Devices Tutorials
Notes on RF Systems and Devices.
Introduction to Physical Electronics (PDF 263p)
Our initial studies will more or less be a review of topics in electricity that you may have seen before in physics. However, if experience is any guide, there is no great harm in going back over this material, for it seems that for many students, the whole concept of just how electricity actually works is just a little hazy. Considering that you hope to be called an electrical engineer one of these days, this might even be a good thing to know!
Switched Mode Power Supplies (PDF 153p) - Free eBook Switched Mode Power Supplies (PDF 153p) - Download ebook Switched Mode Power Supplies (PDF 153p) free