Electric Engineering Dictionary is a consistently up-to-date CD that gives possible definitions for working towards engineers. It serves as a reference and learn software for college students and gives useful info for scientists and researchers in different disciplines. parts tested comprise utilized electric engineering, microwave engineering, regulate engineering, energy engineering, electronic structures engineering, and machine electronics.
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Beam toroid a tool used for measuring beam intensities by means of measuring the magnetic box fluctuations produced through the passing beam. The magnetic box fluctuations produce a present in a coil, that's wound round a closed round ring (torus) wherein the beam passes. beam waist place at which a beam is so much hugely constrained; for Gaussian beams in actual media the location at which the section fronts are flat. beamformers approach regular for detecting and keeping apart signs which are propagating in a specific path. beamforming a sort of filtering in spatial instead of time area to procure a wanted spatial impulse reaction with a purpose to suppress or to reject sign parts coming from yes instructions. The approach includes directing a number of beams in sure instructions through adjusting, for instance, the point excitation of an array antenna. utilized in communications purposes to suppress different signs than the specified resource sign. additionally termed spatial filtering. beamline a chain of magnets positioned round a vacuum pipe that hold the proton beam from one element of the accelerator to a different. often referred to as delivery line. beamsplitter any of a couple of passive optical units that divide an optical wavefront into elements. Wavefront department will be in response to depth, polarization, wavelength, spatial place, or different optical homes. beamwidth the angular width of the key lobe of a radiation trend. it is often on the half-power point, i. e. , three dB under the height of the most important lobe. it could even be targeted because the width among the nulls on each side of the key lobe (BWFN). c 2000 by means of CRC Press LLC bearing currents present circulate within the bearings of electric machines, due to electromagnetic unbalance within the desktop or from utilizing excessive dv dt inverters. The latter is ready to cost up the stray capacitance current among the stator and rotor and among the rotor and shaft and hence permits motor bearing currents to stream, with ensuing bearing harm. beat frequencies the 2 frequencies, sum and distinction frequencies, generated in the course of the heterodyning procedure or throughout the amplitude-modulating approach. for instance, if a 500 kHz provider sign is amplitudemodulated with a 1 kHz frequency, the beat frequencies are 499 kHz and 501 kHz. beat frequency oscillator an adjustable oscillator utilized in superheterodyne receivers producing a frequency whilst mixed with the ultimate IF produces a distinction or beat frequency in audio variety. becky a knot used to safe a handline. mattress of nails a try fixture for automatic circuit qualification during which a published wiring board is put in touch with a fixture that contacts the board at sure nodes required for exercise the meeting. bel See decibel. Bell, Alexander Graham (1847–1922) Born: Edinburgh, Scotland Bell is healthier understand because the first patent holder for a tool to electronically transmit human speech. Bell’s early curiosity within the mechanisms of speech come from dwelling together with his grandfather, a London speech teach.