electric fields and conduction
Tài liệu Comparing Fields and Methods pptx
Ngày tải lên :
15/12/2013, 00:15
... Oops The common way to solve this problem is to make the fields private and add an accessor method and a modifier method to respectively read and write the value of each private field The modifier ... public: origin.X += 10; There is no doubt that, in this case, using fields is cleaner, shorter, and easier Unfortunately, using fields breaks encapsulation Properties allow you to combine the best ... increases the value of X by 10 To so, it has to read the value of X by using the GetX accessor method, and then write the value of X by using the SetX modifier method: int xpos = origin.GetX(); origin.SetX(xpos...
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Understanding electric utilities and de reguration 2ed
Ngày tải lên :
31/12/2013, 22:00
... discuss electric power, power systems, and the various equipments and functions involved Chapter covers basic electric power and electrical engineering concepts: voltage, current, and power, and ... perspectives: electricity and electric power itself – how the use of electric power developed and how that fueled the industry; technical – how the equipment, systems, and technology developed and evolved; ... Principles and Applications, Second Edition, J Lewis Blackburn Understanding Electric Utilities and De-Regulation, Lorrin Philipson and H Lee Willis Electrical Power Cable Engineering, William A Thue Electric...
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Electric motors and drives technical manual 2010 edition
Ngày tải lên :
12/01/2014, 10:43
... (IEC) sets the standards Or at least many countries base their standards very closely on the IEC standards (for example, Germany's VDE 0530 standard and Great Britain's BS 2613 Standard closely ... 34-1 standard) The NEMA and IEC standards are quite similar, although they sometimes use different terminology Thus, if one understands the IEC nameplate, it is fairly easy to understand a NEMA ... National Electric Manufacturers Association (NEMA) sets motor standards, including what should go on the nameplate (NEMA Standard MG 1-10.40 "Nameplate Marking for Medium Single-Phase and Polyphase...
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Tài liệu Creating Dynamic Text Fields and Retrieving Information ppt
Ngày tải lên :
21/01/2014, 13:20
... and high_txt to the one on the right These two text fields will display the low and high temperatures for the selected day Select the News Box layer With the Text tool still selected, click and ... In the next exercise you'll create all the needed text fields for the News Flash Web site All of the text fields used here are dynamic text fields With newsFlash3.fla still open, move the playhead ... information displayed in this text field is updated Click and drag to create two text fields on this layer, one to the left of the blue arrow and another to the right of the blue arrow in the Weather...
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Tài liệu NEW FIELDS AND STRINGS IN SUBNUCLEAR PHYSICS ppt
Ngày tải lên :
12/02/2014, 16:20
... left-handed and right-handed fermions transform differently under an internal symmetry) and supersymmetric (SUSY) theories Simulation may provide our only way of understanding SUSY breaking and, ... THEORY AND EXPERIMENT HEADING FOR NEW PHYSICS NEW FIELDS AND STRINGS IN SUBNUCLEAR PHYSICS Volume was published by W A Benjamin, Inc., New York; 2-8 and 11-12 by Academic Press, New York and London; ... Results and Prospects Richard K e n w a y Department of Physics & Astronomy, The University of Edinburgh, The King's Buildings, Edinburgh EH9 3JZ, Scotland Abstract In the Standard Model, quarks and...
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Developed for Pacific Gas & Electric Company and Southern California Edison Company potx
Ngày tải lên :
09/03/2014, 00:20
... Industry Classification System O&M operations and maintenance PG&E Pacific Gas and Electric Company R&D research and development RCRA Resource Conservation and Recovery Act SCE Southern California ... making Attaining a better understanding of the customer’s world will assist Pacific Gas and Electric Company (PG&E) and Southern California Edison (SCE) in their design and implementation of industrial ... Coated and Laminated Packaging Paper and Plastics Film Manufacturing 322222 Coated and Laminated Paper Manufacturing 322224 Uncoated Paper and Multiwall Bag Manufacturing 322231 Die-cut Paper and...
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Dielectrics in electric fields (1)
Ngày tải lên :
21/03/2014, 12:08
... effects of high electric fields and/ or high temperatures occur in the form of conduction currents and the complex mechanism of conduction is explained in terms of the band picture of the dielectric ... of dielectric and polymer science and builds upon it a comprehensive and very broad presentation of all aspects of modern dielectric theory and engineering, including the lastest analysis and ... Materials that not normally conduct electricity and have the ability to store electrical charge are known as dielectrics The behavior of dielectrics in electric fields continues to be an area of...
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dielectrics in electric fields (2)
Ngày tải lên :
21/03/2014, 12:08
... and recombination centers UNBILLED 'CONDUCTION BAND - C0NOuCTtG»r BAWD CONDUCTION AND CONDUCTION FORBIDDEN BAND BANG / VALENCt X BAND , BAMO > - y 8A*0 SsS J f SEMICOWOUCTOR ,COI«>OCTION' AND ... sphere of radius R and a dielectric constant 82 The sphere is situated in a dielectric medium extending to infinity and having a dielectric constant of S] and an external electric field is applied ... being excited to the conduction band or falling into the ground state Free electrons in the conduction band and free holes in the valence band can move under the influence of an electric field, though...
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dielectrics in electric fields (3)
Ngày tải lên :
21/03/2014, 12:08
... measurement of dielectric constant involves weak fields The polarization of the dielectric is given by (2.51) If the dielectric is a mixture of several components then the dielectric constant ... the center of a dielectric sphere is given by (1.70) 2(g 2) ' in which C] and 82 are the dielectric constants of the medium outside and inside the sphere For a cavity, e2 = and omitting the suffix ... (2.5) on the left side and equation (1.22) on the right yields s = 47rNR3 +1 (2.9) This expression for the dielectric constant in terms of N and R is the starting point of the dielectric theory We...
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dielectrics in electric fields (4)
Ngày tải lên :
21/03/2014, 12:08
... use the dielectric susceptibility, %* = %' - j %"of the material instead of the dielectric constant s* and the following relationships hold between the dielectric susceptibility and dielectric ... shows the measured values of s' and s" in the complex plane as well as the three relaxation processes The As and i are 88.1, 57.5 and 1.4 (see inset) and, 20 ms, 60 ms and 100 us respectively A method ... under dc fields except that the dielectric constant is reduced to (ss - Soo)/2 The complex part of the dielectric constant is also equal to zero at this value of n, consistent with dc fields As...
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dielectrics in electric fields (5)
Ngày tải lên :
21/03/2014, 12:08
... hopping charges contributing both to dielectric relaxation and conduction is considered feasible because of the semi-crystalline and amorphous nature of practical dielectrics With increasing disorder ... dielectric constant and resistivity are respectively s and p, with subscripts and denoting each material (Fig 4.5) TM Copyright n 2003 by Marcel Dekker, Inc All Rights Reserved Fig 4.5 Dielectrics ... Das Gupta and P C N Scarpa, Electrical Insulation, 15 (March-April) (1999) 2332 A K Jonscher, "Dielectric Relaxation in Solids", Chelsea Dielectrics Press, London, 1983, p 214 R M Hill and A K...
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dielectrics in electric fields (6)
Ngày tải lên :
21/03/2014, 12:08
... the contour plots of &' and e" in Stanyl ® (Steeman and Maurer, 1992) Measurement of polarization and depolarization currents as a function of time with temperature and the electric field as the ... The dielectric constant of dry Stanyl® (aliphatic Polyamide) as a function of frequency and temperature, (b) The dielectric loss factor as a function of frequency and temperature (Steeman and Maurer, ... chlorinated PVC using both electrical bridges and polarization techniques The latter consists of poling the material at an appropriate electric field and measuring both polarization and depolarization...
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dielectrics in electric fields (7)
Ngày tải lên :
21/03/2014, 12:08
... the dielectric properties (&' and e") and absorption currents in this high temperature dielectric56 and these data are presented below A DIELECTRIC CONSTANT AND Loss FACTOR Fig 6.22 shows &' and ... to Veselovski and Slutsker'35 Hikichi and Furuichi36, Patterson37, Sasabe and Moynihan38, Funt and Sutherland39 Fig 6.15 shows the complex dielectric constant in PVAc due to Nozaki and Mashimo ... Dekker, Inc All Rights Reserved Table 6.1 Dielectric Constant and Dielectric Loss Data in PVAc Authors & ref No Mead and Fuoss23 Broens and Muller24 Thurn and Wolf25 Ishida et al26 Saito27 Block,...
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dielectrics in electric fields (8)
Ngày tải lên :
21/03/2014, 12:08
... levels in a dielectric with traps are shown in Fig 7.2 For simplicity only the traps below the conduction band are shown The conduction band and the valence band have energy levels Ec and Ev respectively ... the conduction band, nc, and in the traps, n, is obtained as [Dissado and Fothergill, 1992] (7.8) n ^ ^ where Neff and Nt is the effective number density of states in the conduction band, and ... localized states of the valence band not overlap those in the conduction band, the donors or acceptors not gain enough energy to move into the conduction band or valence band, unlike in normal semiconductors...
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dielectrics in electric fields (9)
Ngày tải lên :
21/03/2014, 12:08
... co-efficient; We and Wp the drift velocity of electrons and positive ions, respectively, x the spatial variable and t the temporal variable The left hand terms in equations (8.33) and (8.34) denote ... electric fields Because of the very high voltages applied and the nonuniformity of the electric field, the field near the anode is very high Intense ionization occurs close to the electrode and ... Boyd and Crichton 400 < E/N < 700 E Proc IEE, 118(1971)1872-1877 Geballe and Harrison 250 < E/N < 2000 E Basic Processes of Gaseous discharges, L B Mailer and Naidu 350 < E/N < 4000 E Teich and...
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dielectrics in electric fields (10)
Ngày tải lên :
21/03/2014, 12:08
... AUTHORS Kucukarpaci and Lucas Schaffer and Hui Liu and Raju 50 < E/N < 300 20 < E/N < 2000 Lucas & Saelee 14 < E/N < 3000 Mcintosh Raju and Dincer E/N = 240 < E/N < 600 Liu and Raju 20 < E/N < ... finite difference method is difficult and is limited to the early 77 754 stages of streamer formation Dhali and Pal in SF6 and Dhali and Williams in N2 handle the steep density gradients by using ... ions is denoted by N" and the individual contribution of each species are identified in Fig (9.12a) In both uniform and non-uniform electric fields the ion density oscillates and is possibly due...
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dielectrics in electric fields (11)
Ngày tải lên :
21/03/2014, 12:08
... 10.2 where nc denotes the number of electrons in the conduction band The trap levels, TI, T2, are situated closer to the conduction band and the holes, HI, H2, are retrapping centers Introduction ... below the conduction band, which has a density of states, Nc On thermal stimulation the electrons are released from the traps to the conduction band with a probability lying between zero and one, ... numbers in the traps and the conduction band are n and nc respectively Note that the energy diagram shown in fig 10.3 is relatively more detailed than those shown in Figs 10.1 and 10.2 10.2 CURRENT...
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dielectrics in electric fields (12)
Ngày tải lên :
21/03/2014, 12:08
... transducer The electrical signal detected by the transducer is amplified and rectified The method measures the electric fields in the interface of a dielectric, and utilizes a transducer and associated ... pulses for electric field measurements in oil and polymers, (b) Block diagram of the instrumentation used to acquire and process the acoustic and electrical signals required for an acoustic electric ... line) and calculated distributions (points) Selected data from (Lang and Das Gupta, 1981, with permission of Ferroelectrics) A dielectric slab of thickness d, area A, and infinite-frequency dielectric...
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