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Year 8 - Bedford Free School
Year 8 - Bedford Free School

CH 13.2 Notes
CH 13.2 Notes

... called amperes (A), or amps, for short. Current flows from positive to negative. A battery’s electrical symbol uses a long line to show the positive end and a short line to show the negative end. ...
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Theorie examen GEA januari 2016 Prof Melkebeek
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... Power monitoring circuits are increasingly used throughout automotive, industrial, communications and computing applications as electronics designers strive to continually improve thermal performance, increase efficiency and generally make their products more “green.” The problem is that power monit ...
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... graphics on the front panel show the user where to make connections. Advanced engineering features include storage of 100 different setups (voltage and current) as well as a 100 hour timer. Power- on state and synchronous or individual control of each channel output can also be set. Over-voltage and ...
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Triode



A triode is an electronic amplifying vacuum tube (or valve in British English) consisting of three electrodes inside an evacuated glass envelope: a heated filament or cathode, a grid, and a plate (anode). Invented in 1906 by Lee De Forest by adding a grid to the Fleming valve, the triode was the first electronic amplification device and the ancestor of other types of vacuum tubes such as the tetrode and pentode. Its invention founded the electronics age, making possible amplified radio technology and long-distance telephony. Triodes were widely used in consumer electronics devices such as radios and televisions until the 1970s, when transistors replaced them. Today, their main remaining use is in high-power RF amplifiers in radio transmitters and industrial RF heating devices. The word is derived from the Greek τρίοδος, tríodos, from tri- (three) and hodós (road, way), originally meaning the place where three roads meet.
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