Diccionario De Ingeniero Electricista

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“Book/Definitions” Electrical Engineering Dictionary. Ed. Phillip A. Laplante Boca Raton: CRC Press LLC, 2000

Special Symbols
α-level set a crisp set of elements belonging to a fuzzy set A at least to a degree α Aα = {x ∈ X | µA (x) ≥ α} See also crisp set, fuzzy set. f hertz. common symbol for bandwidth, in

µ0 common symbol for permeability of free space constant. µ0 = 1.257 × 10−16henrys/meter. common symbol for relative permeµr ability. ω common symbol for radian frequency in radians/second. ω = 2 · π · frequency. common symbol for positive transition θ+ angle in degrees. common symbol for negative transiθ− tion angle in degrees. common symbol for conduction anθcond gle in degrees. common symbol for saturation angle θsat in degrees. common symbol for FET channelθCC to-casethermal resistance in ◦ C/watt. common symbol for bipolar junctionθJ C to-case thermal resistance in ◦ C/watt. common symbol for Richardson’s A∗ constant. A∗ = 8.7 amperes · cm/◦ K BVGD voltage. BVGS voltage. See gate-to-drain breakdown

common symbol for gallium arrGaAs senide relative dielectric constant. rGaAs = 12.8. common symbol for silicon relative dielectric constant. rSi = 11.8.
rSi 0 0 rsymbol for permitivity of free space. = 8.849 × 10−12 farad/meter.

common symbol for relative dielectric constant. common symbol for DC to RF conηDC version efficiency. Expressed as a percentage. common symbol for power added efηa ficiency. Expressed as a percentage. common symbol for total or true effiηt ciency. Expressed as a percentage. common symbol for source reflecopt tion coefficient foroptimum noise performance.

See gate-to-source breakdown

dv/dt rate of change of voltage withstand capability without spurious turn-on of the device. Hci See intrinsic coercive force.

common symbol for excess noise in ne watts. ns h watts. common symbol for shot noise in

c

2000 by CRC Press LLC

nt common symbol for thermal noise in watts. 10base2 a type of coaxial cable used toconnect nodes on an Ethernet network. The 10 refers to the transfer rate used on standard Ethernet, 10 megabits per second. The base means that the network uses baseband communication rather than broadband communications, and the 2 stands for the maximum length of cable segment, 185 meters (almost 200). This type of cable is also called “thin” Ethernet, because it is a smaller diameter cable thanthe 10base5 cables. 10base5 a type of coaxial cable used to connect nodes on an Ethernet network. The 10 refers to the transfer rate used on standard Ethernet, 10 megabits per second. The base means that the network uses baseband communication rather than broadband communications, and the 5 stands for the maximum length of cable segment of approximately 500 meters. This type of cable is also called“thick” Ethernet, because it is a larger diameter cable than the 10base2 cables. 10baseT a type of coaxial cable used to connect nodes on an Ethernet network. The 10 refers to the transfer rate used on standard Ethernet, 10 megabits per second. The base means that the network uses baseband communication rather than broadband communications, and the T stands for twisted (wire) cable. 2-D Attasimodel by the equations a 2-D model described

deux indices,” IRIA Rapport Laboria, No. 31, Sept. 1973. 2-D Fornasini–Marchesini model model described by the equations a 2-D

xi+1,j +1 = A0 xi,j + A1 xi+1,j + A2 xi,j +1 + Buij (1a) (1b) yij = Cxij + Duij i, j ∈ Z+ (the set of nonnegative integers) here xij ∈ R n is the local state vector, uij ∈ R m is the input vector, yij ∈ R p is the outputvector Ak (k = 0, 1, 2), B, C, D are real matrices. A 2-D model described by the equations xi+1,j +1 = A1 xi+1,j + A2 xi,j +1 + B1 ui+1,j + B2 ui,j +1 (2) i, j ∈ Z+ and (1b) is called the second 2-D Fornasini–Marchesini model, where xij , uij , and yij are defined in the same way as for (1), Ak , Bk (k = 0, 1, 2) are real matrices. The model (1) is a particular case of (2). 2-D general model a 2-D...
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