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Tag: theory
Magnetron Theory Of Operation
2014-02-11 13:45:20| rfglobalnet News Articles
A magnetron is a high power microwave oscillator in which the potential energy of an electron cloud near the cathode is converted into r.f. energy in a series of cavity resonators similar to the one shown in Figure 1. As depicted by the low frequency analog, the rear wall of the structure may be considered the inductive portion, and the vane tip region the capacitor portion of the equivalent resonant circuit. The resonant frequency of a microwave cavity is thereby determined by the physical dimension of the resonator together with the reactive effect of any perturbations to the inductive or capacitive portion of the equivalent circuit. This is an important point and will be recalled later.
Tags: operation
theory
magnetron
New Studies Give Strong Boost To Binary-Star Formation Theory
2014-01-06 03:52:28| rfglobalnet News Articles
Using the new capabilities of the upgraded Karl G. Jansky Very Large Array (VLA), scientists have discovered previously-unseen binary companions to a pair of very young protostars. The discovery gives strong support for one of the competing explanations for how double-star systems form.
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strong
studies
theory
DC Motor Theory, Operation, and Maintenance
2013-11-13 00:35:33| Electrical Construction & Maintenance
By David Herres, Master Electrician DC motors may not be the wave of the future, but they certainly have a secure place in todays workplace. Therefore, its worthwhile for electrical professionals to take a look at their inner workings and, when the time comes, be prepared to service DC motors. read more
Tags: operation
motor
maintenance
theory
Carbon farming: it's a nice theory, but don't get your hopes up
2013-10-29 06:00:00| Climate Ark Climate Change & Global Warming Newsfeed
Guardian: As the Blue Mountains burned last week, a grumble of local farmers gathered in Harden, on the south-west slopes of New South Wales. I met them in the middle of a wheat crop, hunched against the cold wind. It had been snowing in the ski fields as the state's rural fire service chief, Shane Fitzsimmons, predicted catastrophic bushfire conditions in greater Sydney area. While Tony Abbott and Christiana Figueres traded blows about the origins of the early bushfire season, I joined the farmers to...
Spectrum Analyzer Fundamentals Theory and Operation of Modern Spectrum Analyzers
2013-10-04 16:30:27| rfglobalnet News Articles
This primer includes the basics of spectrum analysis, nonlinear devices under test (DUTs), crest factor and complementary cumulative distribution functions (CCDF), phase noise measurements, and mixers and mixer measurements.
Tags: operation
modern
theory
spectrum
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