50 woorden met de letter
Z:
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Z bus matrix
EN: Z bus matrix, bus impedance matrix
NL: knooppuntsimpedantiematrix, Z-matrixDefinitie EN: an inverse bus admittance matrix
Z marker beacon
EN: Z marker beacon
NL: Z-bakenDefinitie EN: in aviation,a form of marker beacon radiating a narrow conical beam along the vertical axis of the cone of silence of a track beacon
z-matrix
EN: z-matrix
NL: z-matrixDefinitie EN: array of the terms,each having the dimension of impedance,that normally characterized certain properties of an electrical network
z-parameter
EN: z-parameter
NL: z-parameterDefinitie EN: relationship having the dimensions of impedance,partially defining the electrical relationships at the terminals of a two-port network
Z-Theta chart
EN: Z-Theta chart
NL: Z-thèta-diagramDefinitie EN: graphical representation in polar coordinates of the amplitude reflection factor r,for a lossless uniform transmission line with characteristic impedance Z0:in terms of the complex impedance Z by two families of orthogonal circles on each of which either the modulus Z or the argument Theta has a constant value,where Z = Z/Theta is the complex impedance in the direction of propagation of the incident wave at the point at which the amplitude reflection factor is evaluated
Z-transform
EN: Z-transform
NL: Z-transformatieDefinitie EN: Laplace transform of a periodically sampled signal with change of variable Z = e power Ts,where T is the sampling period
Zener breakdown
EN: Zener breakdown
NL: zenerdoorslagEN: tunnel breakdown
NL: tunneldoorslagEN: Zener breakdown of a PN junction
NL: Zener-doorslagDefinitie EN: the breakdown caused by the transition of electrons from the valence band to the conduction band due to tunnel action under the influence of a strong electric field in the reverse direction
Zener characteristic
EN: Zener characteristic
NL: Zener-karakteristiekDefinitie EN: rapid increase in current in the reverse direction of a p-n junction,resulting wholly or in part from the Zener effect
Zener current
EN: Zener current
NL: ZenerstroomDefinitie EN: current through a p-n junction resulting from the Zener effect; i.e. ,the extra current flowing as a result of Zener breakdown
Zener diode
EN: Zener diode, avalanche diode, breakdown diode
NL: Zener-diode, zenerdiodeDefinitie EN: a diode with the characteristic of showing sharp increase of reverse current at a certain negative potential,and suitable for use as voltage reference
Zener diode
EN: Zener diode, breakdown diode, avalanche diode
NL: Zener-diode, zenerdiodeDefinitie EN: a diode with the characteristic of showing sharp increase of reverse current at a certain negative potential,and suitable for use as voltage reference
Zener diode
EN: Zener diode
NL: Zener-diodeEN: avalanche diode
NL: zenerdiodeDefinitie EN: a diode with the characteristic of showing sharp increase of reverse current at a certain negative potential,and suitable for use as voltage reference
Zener effect
EN: Zener effect
NL: Zener-effectDefinitie EN: phenomenon in which,under the influence of an electric field,an electron crosses the energy-band gap from valence band to conduction band by tunnelling to a region in which the final energy is the same as the initial energy,resulting in the direct disruption of the valence bond
Zener emission
EN: Zener emission
NL: Zener-emissieDefinitie EN: emission of electrons across a thin(approx.5 micrometers)layer of dielectric from a semiconductor material to another semiconductor or to a conductor
Zener knee
EN: Zener knee, Zener voltage, Zener knee voltage
NL: zenerspanningDefinitie EN: onset voltage of the Zener effect at which the p-n junction characteristic enters the breakdown region; the potential required to initiate breakdown, defined as the potential at a particular value of the reverse current such as 1A
Zener knee voltage
EN: Zener knee voltage, Zener knee, Zener voltage
NL: zenerspanningDefinitie EN: onset voltage of the Zener effect at which the p-n junction characteristic enters the breakdown region; the potential required to initiate breakdown, defined as the potential at a particular value of the reverse current such as 1A
Zener level detector
EN: Zener level detector
NL: Zener-niveaudetectorDefinitie EN: level detector in which temperature drift is reduced by use of a Zener diode to compensate a transistor; e.g. ,Zener diode in series with emitter-follower load, AGC output across load being such as to make the oscillator under control have an amplitude controlled by the Zener diode voltage
Zener noise
EN: Zener noise
NL: Zener-ruisDefinitie EN: random electrical noise caused when electrons cross from one side of a junction to the other as a result of the Zener effect,each such electron causing an impulse of area /q/ in the current-vs-time relationship
Zener resistance
EN: Zener resistance, Zener slope
NL: helling van de Zener-karakteristiekDefinitie EN: rate of increase of current with potential in the Zener breakdown region of a p-n junction characteristic,defined at a particular current value
Zener slope
EN: Zener slope, Zener resistance
NL: helling van de Zener-karakteristiekDefinitie EN: rate of increase of current with potential in the Zener breakdown region of a p-n junction characteristic,defined at a particular current value
Zener slope
EN: Zener slope
NL: helling van de Zener-karakteristiekDefinitie EN: rate of increase of current with potential in the Zener breakdown region of a p-n junction characteristic,defined at a particular current value
Zener theory
EN: Zener theory
NL: Zener-theorieDefinitie EN: identification of two processes:a)the tunnelling of electrons through a potential barrier with finite dimensions in a semiconductor piece,and b),electrons crossing the band gap from the valence band to the conduction band,the identification introducing a duality of space and energy
Zener voltage
EN: Zener voltage, Zener knee, Zener knee voltage
NL: zenerspanningDefinitie EN: onset voltage of the Zener effect at which the p-n junction characteristic enters the breakdown region; the potential required to initiate breakdown, defined as the potential at a particular value of the reverse current such as 1A
Zener voltage
EN: Zener voltage
NL: zenerspanningDefinitie EN: onset voltage of the Zener effect at which the p-n junction characteristic enters the breakdown region; the potential required to initiate breakdown, defined as the potential at a particular value of the reverse current such as 1A
Zener-diode combination
EN: Zener-diode combination, temperature-compensated combination
NL: temperatuur-gecompenseerde combinatieDefinitie EN: package consisting of two or more Zener diodes connected in series(with the possible inclusion of forward-biased diodes for fine adjustment)that has a composite operating voltage almost independent of temperature,often used as a highly-stable reference voltage
zenith angle
EN: zenith angle, zenith distance
NL: zenithoekDefinitie EN: the angle between the beam from the sun and the vertical
zero balance
EN: zero balance
NL: statische afwijkingDefinitie EN: the output signal of the transducer with rated excitation and with no-load applied,usually expressed as a percent of rated output
zero crossing-Period
EN: zero crossing-Period
NL: opgaande nul-punt periodeDefinitie EN: the duration of the wave record divided by the number of times the record trace crosses the mean water level in an upward direction during the record
zero divergence field
EN: zero divergence field
NL: divergentievrij veldDefinitie EN: a vector field of zero divergence
zero error
EN: zero error
NL: nulpuntafwijkingDefinitie EN: the delay time occurring within the transmitter and receiver circuits of a radar system
zero level
EN: zero level
NL: niveauDefinitie EN: in telecommunications systems,1 mW of power,normally across a load of 600 ohms
zero pinch-off voltage
EN: zero pinch-off voltage
NL: nul pinch-off-spanningDefinitie EN: gate voltage of zero at the pinch-off condition of a particular MOST; infers that the device has zero effective doping level at the surface and, strictly, is neither a depletion nor an enhancement device
zero point
EN: zero point
NL: nulpuntDefinitie EN: operating point of an active device or system that is identical with that specified, expected, or required; i.e. ,the drift from the point is zero
zero point
EN: zero point
NL: nulpuntDefinitie EN: the electrical zero point where zero millivolts would be displayed
zero potential
EN: zero potential, neutral
NL: nulpotentiaalDefinitie EN: potential of a point at infinite distance,used for defining capacitance
zero power resistance
EN: zero power resistance
NL: weerstand bij referentietemperatuurDefinitie EN: the resistance of a thermistor or resistance temperature detector element with no power being dissipated
zero return
EN: zero return
NL: hystereseDefinitie EN: the difference in zero balance measured immediately before rated load application of specified duration and measured after removal of the load,and when the output has stabilised
zero suppression
EN: zero suppression
NL: nullenonderdrukkingDefinitie EN: the span of an indicator or chart recorder may be offset from zero(zero suppressed)such that neither limit of the span will be zero
zero voltage switching
EN: zero voltage switching
NL: nulspanningsschakkelingDefinitie EN: the making or breaking of circuit timed such that the transition occurs when the voltage wave form crosses zero voltage
zero-beat
EN: zero-beat
NL: nulzwevingDefinitie EN: the condition in which a circuit is oscillating at the exact frequency of an input signal,so no beat tone is produced or heard
zero-bias drain current
EN: zero-bias drain current
NL: drainstroom als de gate-source-potentiaal gelijk aan nul isDefinitie EN: drain current of field-effect transistor, flowing in the absence of gate bias; function of both channel resistivity and pinch-off voltage
zero-crossing detector
EN: zero-crossing detector
NL: nuldoorgangsdetectorDefinitie EN: threshold detector with a threshold at substantially-zero voltage or current,indicating the instantaneous polarity of the input
zero-sequence impedance
EN: zero-sequence impedance
NL: homopolaire impedantieDefinitie EN: impedance,expressed in ohms per phase at rated frequency,between the line terminals of a polyphase star or zigzag-connected winding connected together and its neutral terminal
Ziegler method
EN: Ziegler method, majority carrier correction method, MCC method
NL: Ziegler-methodeDefinitie EN: a method for measuring doping profiles that corrects for the onset of accumulation at shallow depths
zigzag connection
EN: zigzag connection
NL: zigzagschakelingDefinitie EN: a winding connection in which one end of each phase winding of a polyphase transformer,or reactor,is connected to a common point,i.e.neutral point,and each phase winding consists of two parts in which phase-displaced voltages are induced.These two parts normally have the same number of turns
zinc-air cell
EN: zinc-air cell
NL: zink-luchtaccuDefinitie EN: a primary cell in which atmospheric oxygen is reduced at a nickel electrode and zinc is oxidised as a counter-reaction
zinc-blende structure
EN: zinc-blende structure
NL: zinkblendestructuurDefinitie EN: structure of a compound, as of a compound semiconductor, that has certain similarities with diamondlike structure, named from ZnS that has this structure; the component atoms have dissimilar size, but are arranged as are carbon atoms in a diamond (and germanium atoms in a single crystal)
zinc-carbon cell
EN: zinc-carbon cell
NL: zink-koolstofaccuDefinitie EN: a primary cell with a zinc anode and a manganese-dioxide cathode and with a hydrous electrolyte from ammonium chloride and/or zinc chloride
zone levelling
EN: zone levelling
NL: zone levellingDefinitie EN: the passing of one or more molten zones through a semiconductor crystal for the purpose of uniformly distributing impurities in the crystal
zone pass
EN: zone pass
NL: zone-doorloopDefinitie EN: passage of a molten zone from one end of a long ingot to the other,in a zone-refining operation,the termination of the zone pass being before the ingot tip in some cases because of technical difficulties
Letter Z:
1 A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z
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