I started studying electronics 3 years ago as something to do during recovery from surgery. I studied long, not really too hard, and received my Extra class ham radio license. Much of what was covered today I just learned recently while preparing for the ham exams. This is an excellent refresher, and at my age (65), refreshment helps. Thanks for presenting this for free. Max is very good a teacher.
GeoSei - didn't know that it was, unless it is part of the device package in the form of BeO - berylium oxide - a super thermally conductive material which causes severe alergic reactions in some individuals, when in the form of dust.
If you take any elements in the same family as ilicons -- you can use them -- so silicon, germanium, and carbon (in th eform of diamond). Tings like Gallium Arsnide involve mixing two different elements.
Thanks for the presentation. Just a quick remark: I am aware of the time constraints but I think that as the complexity of the content of the following slides goes up, the lecturer shouldn't be cutting down on time spent on those following slides - especially first diode, or transistor - as that is where first and most of the people get lost/confused with the basics of electricity, of the whole "how it works" needed for later.
The effect know as water hammer is a manifestation of the accelerative head in of a liquid in a long tube being brought to a sudden stop. This is analigous to sudden the voltage spike that is observed accross a switching device in series with an inductor after the switch is shut off.
Electron migrate down the copper at about 13,000ft/sec. The electromagnet force (photons) move down the conductor at around 2/3 the speed of light. The photon knock the electrons off the atoms as the go. The electron move is a secondary event.
The streaming audio player will appear on this web page when the show starts at 2pm eastern today. Note however that some companies block live audio streams. If when the show starts you don't hear any audio, try refreshing your browser.
A middle school team from Rochester, Mich., has again nabbed the grand prize in the annual international Future City Competition, which drew students from 37 regions of the United States, as well as from England and China.
The word “smart” is becoming the dumbest word around. It has been applied to almost every device and system in our homes. In addition to smartphones and smart meters, we now hear about smart clothing and smart shoes, smart lights, smart homes, smart buildings, and every trendy city today has its smart city project. Just because it has a computer inside and is connected to the Web, does not mean it is smart.
Are you being paid enough? Do you want a better job? According to a recent survey Manpower released just before Engineers Week, employers and engineers don't see eye-to-eye about the state of US engineers' skills and experience.
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.