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Vacuum Tube
In electronics, a vacuum tube or (thermionic) valve (outside North America) is a device generally used to...
Circuit Elements And Sources
This chapter provides an overview of most commonly used elements in electric circuits. It also contains laws...
Types Of Circuits
Types Of Circuits Most analog electronic appliances, such as radio receivers, are constructed from combinations of a...
Basic Theory Of Electron
The electron is a fundamental subatomic particle that carries an electric charge. It is a spin-½ lepton...
Applications Of Vacuum Tubes
Applications Of Vacuum Tubes Tubes were ubiquitous in the early generations of electronic devices, such as radios,...
Special Purpose Tubes
Special Purpose Tubes Some special-purpose tubes are intentionally constructed with various gases in the envelope. For instance,...
Variations Of Vacuum Tube
Variations Of Vacuum Tube Frequency Conversion can be accomplished by many different methods in superheterodyne receivers. Tubes...
Reliability Of Vacuum Tube
Reliability Of Vacuum Tube The chief reliability problem of a tube is that the filament or cathode...

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