Vacuum Tube / Thermionic Valves Includes:BasicsHow does a tube workVacuum tube electrodesDiode valve / tubeTriodeTetrodeBeam TetrodePentodeEquivalentsPin connectionsNumbering systemsValve sockets / basesWith the very large number of vacuum tubes or thermionic valves that were produced and as a result of the multiple vacuum tube numbering systems that were in use, there are generally equivalents for most types of tube.

Smart Speakers Includes:What is a smart speakerSmart speakers have become very popular and there is a variety of smart speakers on the market from many different manufacturers.These smart speakers enable us to do a variety of different things from controlling wireless enabled lights to ordering various products and takeaways online as well as providing information like the weather forecast, time, date and many more things.

Keysight Technologies, or Keysight, is a US electronics test and measurement company that was spun off from Agilent in 2014, which in turn had been spun off from Hewlett Packard.Keysight products include a very wide range of hardware and software for benchtop, modular, and field test instruments.The test instruments manufactured by Keysight include: digital multimters, oscilloscopes (range including everything from low cost to high end), logic analyzers, signal generators, spectrum analyzers, vector network analyzers and some other test instruments & tools.

Amateur radio is one of the most exciting hobbies today. There are over a million radio amateurs or & 34;radio hams& 34; around the world and this is an indication of its popularity. Since the first amateur radio experimenters at the beginning of the twentieth century, the number of people interested in the hobby have grown.

Code Division Multiple Access, CDMA was an innovative use of direct sequence spread spectrum technology used to provide a multiple access scheme for mobile telecommunications and other wireless systems.CDMA used the property of DSSS that unless the transmitter and receiver used the same spreading code for both ends of the process, the signal could not be decoded and in this way it was able to provide a means of enabling a variety of different users to use the same channel to access a base station without mutual interference.

There is a host of electronic circuit building blocks that can be used. The electronic tutorials in this section provide electronic circuit building blocks along with design information, formulas, practical hints and tips where applicable and useful guides on the electronic circuits.Transistor circuitsDespite the fact that integrated ciruits are widely used today, electronic circuits using discrete transistors can still provide excellent performance.