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heating capacitor
EN: heating capacitorNL: belastingscondensator, verwarmingscondensator
Definitie EN: a capacitor formed by the work electrodes and the charge which is placed between them
heating capacity
EN: heating capacityNL: verwarmingsvermogen
NL: verwarmingscapaciteit
NL: verwarmingsefficiency
Definitie EN: the quantity of heat necessary to raise the temperature of a system or substance by 1 degree of temperature, expressed in calories per degree centigrade; also the quantity of heat in British thermal units that a room air conditioner is capable of adding to a room in one hour's time
heating coil
EN: heating coilNL: gloeiflens
Definitie EN: intended for mounting in the air intake of Diesel engines for starting purposes
Definitie NL: gloeilichaam dat soms in het aanzuigspruitstuk van dieselmotoren worden geplaatst om aangezogen lucht bij het aanslaan te verwarmen
heating conductor
EN: heating conductorNL: warmtegeleider
EN: heating resistor
NL: verwarmingsweerstand
Definitie EN: a conductor connected to a source of electric current and used to transform electrical energy into heat
heating element
EN: heating elementNL: verwarmingselement
Definitie EN: a part,removable or not,comprising a heating conductor and accessories which make up an independent unit
Heating Energy Index
EN: Heating Energy Index,HEINL: verwarmingsindex
Definitie EN: A valuable energy index of a building to be obtained from the energy data is one of heating BTu's/sq.ft/degree day or Heating Energy Index
heating gas oil
EN: heating gas oil, domestic fuel oilNL: huisbrandolie, HBO
Definitie NL: "aardolieproduct in de gasolierang waaraan een rode kleurstof is toegevoegd ter onderscheiding van autogas(diesel)olie (waarop meer accijnzen rusten)."
heating inductor
EN: heating inductorNL: inductor
EN: work coil
NL: werkspoel
Definitie EN: a component of an induction heating work station,carrying an alternating current and designed to create the magnetic field which induces currents in the workpiece
heave
EN: heaveNL: dompen
Definitie EN: the vertical motion of a ship due to the range of waves
heavily-doped substrate slice
EN: heavily-doped substrate slice, epitaxial heavily-doped substrate sliceNL: sterk gedoteerde substraatschijf
Definitie EN: a substrate slice cut from a semiconductor crystal containing a high level of a required impurity
heavily-doped substrate slice
EN: heavily-doped substrate sliceNL: sterk gedoteerde substraatschijf
Definitie EN: a substrate slice cut from a semiconductor crystal containing a high level of a required impurity
heavy electron
EN: heavy electron, slow electronNL: zwaar elektron
Definitie EN: an electron having a large effective mass as a result of its position in a Brillouin zone
heavy electron
EN: heavy electronNL: zwaar elektron
Definitie EN: an electron having a large effective mass as a result of its position in a Brillouin zone
heavy hole
EN: heavy hole, slow holeNL: zwaar gat
Definitie EN: a hole having a large effective mass as a result of its position in a Brillouin zone
heavy hole
EN: heavy holeNL: zwaar gat
Definitie EN: a hole having a large effective mass as a result of its position in a Brillouin zone
heavy saturation
EN: heavy saturationNL: sterke verzadiging
Definitie EN: the condition in which a transistor is deeply within the saturation region of operation and cannot be brought out of that region within a reasonable space of time without difficulty
heel crack
EN: heel crackNL: hielbarst
Definitie EN: a crack across the width of the bond in the heel region
helical antenna
EN: helical antennaNL: schroeflijnantenne
EN: helical aerial
NL: helix
EN: helix antenna
NL: spiraalantenne
EN: helix aerial
NL: helixantenne
Definitie EN: an aerial consisting of a conductor in the form of a helix
helical instability
EN: helical instability, screw instability, corkscrew instabilityNL: schroefinstabiliteit
Definitie EN: instability which can arise when an electric current is fed through a plasma with a helical density distribution immersed in a magnetic field. This will give rise to screw-shaped ion and electron clouds which move in opposite directions along the field lines and produce a charge separation. This in turn generates transverse drift motions, electric fields and growing disturbances
helical scan
EN: helical scan, helical-scan magnetic recordingNL: magnetische registratie met spiraalvormige aftasting
Definitie EN: a method of recording information on magnetic tape using rotating magnetic heads that create a helical track across the width of the tape
helical-plate
EN: helical-plateNL: rozetplaat
Definitie EN: a plate of large area formed by helically wound ribbed strips of soft lead inserted in supporting pockets of cells of hard lead
helican scan
EN: helican scanNL: helican scan
Definitie EN: a type of scan in which multiple heads are mounted on a drum which is fixed at an angle to the plane so that the heads trace a shape something like a compressed helix on the tape
Definitie NL: schuine sporen op magneetband:die worden geschreven en gelezen met magneetkoppen die zijn gemonteerd in een ronddraaiende trommel waarbij de trommel en de band onder een kleine hoek staan
helicon waves
EN: helicon wavesNL: helicongolven
Definitie EN: Electromagnetic waves which propagate in a solid-state plasma immersed in magnetic field,when the solid in question has only one type of free carriers.Their frequency is inversely prop ortional to the square of their wavelength,so that their propagation velocity increases with their frequency.
heliograph
EN: heliograph, sunshine recorderNL: zonneschijnautograaf, heliograaf
Definitie EN: an instrument that records the duration of sunshine and gives a qualitative measure of its amount by action of sun's rays on blue print paper
heliograph
EN: heliographNL: heliograaf
EN: sunshine recorder
NL: zonneschijnautograaf
Definitie EN: an instrument that records the duration of sunshine and gives a qualitative measure of its amount by action of sun's rays on blue print paper
heliostat
EN: heliostatNL: heliostaat
Definitie EN: An electro-optical-mechanical device that orients a mirror so that sunlight is reflected from the mirror in a fixed specific direction,regardless of the sun's position in the sky.
heliostat field
EN: heliostat fieldNL: heliostaatveld
Definitie EN: an arrangement of a multiplicity of heliostats (sun-tracking mirrors) pointed on a 'power tower'(tower absorber). Each heliostat is mounted in an altazimuth mounting so that the angle o f mirrors can be adjusted to keep the reflected solar rays directed toward the tower
heliotropic
EN: heliotropicNL: heliotropisch
Definitie EN: an adjective referring to devices which track the sun, following its apparent motion across the sky
helium leak detection
EN: helium leak detection, helium leak testNL: dichtheidstest met helium
Definitie EN: a mass spectrometer leak test utilising helium gas,which is very light and capable of entry into small leaks,but is also non-explosive
hemispherical power bowl
EN: hemispherical power bowlNL: zonnebol
Definitie EN: the hemispherical power-bowl has been developed as an alternative to the central-receiver approach to power systems; the moving heliostats are replaced by fixed mirrors, and the fixed central tower is replaced by a moving cylindrical distributed focus absorber....The largest hemispherical bowl covered with mirrors measures 1000 ft. across
henry
EN: henryNL: henry
Definitie EN: the SI unit of inductance
heptode
EN: heptodeNL: heptode
Definitie EN: a seven-electrode electronic tube containing an anode,a cathode,a control electrode and four additional electrodes
hermetic sealing
EN: hermetic sealingNL: hermetische afsluiting
Definitie EN: a type of encapsulation preventing any transference of ambient atmosphere from the exterior to the semiconductor element
hertzian wave
EN: hertzian wave, radio waveNL: Hertze golf
Definitie EN: an electromagnetic wave of a frequency between 10 kHz and 30 000 Ghz
hertzian wave
EN: hertzian waveNL: Hertze golf
Definitie EN: an electromagnetic wave of a frequency between 10 kHz and 30 000 Ghz
heterocyst
EN: heterocystNL: heterocyste
Definitie EN: A cell that has no oxygen-producing apparatus-but has in it the hydrogen-generating apparatus.
heterodyne CATV amplifier
EN: heterodyne CATV amplifierNL: heterodyne CATV-versterker
Definitie EN: an amplifier which works on the heterodyne principle,i.e.,converts the incoming TV signal to a lower frequency,amplifies this,and reconverts it to a normal TV frequency
heterodyne frequency meter
EN: heterodyne frequency meter, heterodyne wavemeterNL: heterodyne frequentiemeter
Definitie EN: a frequency meter in which a known frequency,which may be adjustable or fixed,is heterodyned with an unknown frequency to produce a zero beat or an audio-frequency signal whose value is measured by other means
heterodyne frequency meter
EN: heterodyne frequency meterNL: heterodyne frequentiemeter
Definitie EN: a frequency meter in which a known frequency,which may be adjustable or fixed,is heterodyned with an unknown frequency to produce a zero beat or an audio-frequency signal whose value is measured by other means
heterodyne repeater
EN: heterodyne repeaterNL: heterodyne versterker
Definitie EN: a microwave repeater that receives an attenuated radio signal,shifts it down to an intermediate frequency(generally 70 MHz),amplifies the intermediate-frequency signal,then shifts it up again to the desired microwave frequency for retransmission
heterodyne whistle
EN: heterodyne whistle, heterodyne frequencyNL: heterodyne fluittoon, fluitstoringen
Definitie EN: a steady,high-pitched audio tone heard in an ordinary amplitude-modulation radio receiver under certain conditions when two signals that differ slightly in carrier frequency enter the receiver and heterodyne to produce an audio beat
heterodyne whistle
EN: heterodyne whistleNL: heterodyne fluittoon
EN: heterodyne frequency
NL: fluitstoringen
Definitie EN: a steady,high-pitched audio tone heard in an ordinary amplitude-modulation radio receiver under certain conditions when two signals that differ slightly in carrier frequency enter the receiver and heterodyne to produce an audio beat
heterodyning
EN: heterodyningNL: heterodyniseren
Definitie EN: the mixing of an electromagnetic wave of one frequency with a wave of another frequency to produce one or more additional frequencies
heterogeneous multiplex
EN: heterogeneous multiplexNL: heterogene multiplex
Definitie EN: a multiplex system in which the derived channels do not work at the same binary rate
heterojunction
EN: heterojunctionNL: hetero-overgang, heterojunctie
Definitie EN: a junction between two semiconductor materials having different band gaps
heterojunction p-n device
EN: heterojunction p-n deviceNL: component met een hetero-p-n-junctie
Definitie EN: semiconductor device in which a p-type region is composed of one semiconductor material and an n-type region is composed of another semiconductor material with a different magnitude of band gap
heterojunction solar battery
EN: heterojunction solar batteryNL: zonnecel met een heterojunctie
Definitie EN: a solar battery consisting of a heterojunction P-n device,in which the semiconductor region at the surface is mainly transparent to incident radiation,and the semiconductor region below the P-n junction is mainly opaque to incident radiation,allowing the main generation of charge carriers to take place near the junction
heterostructure
EN: heterostructureNL: heterostructuur
Definitie EN: thin layered structure that has large and usually abrupt changes in composition with a single semiconductor crystal; compositional changes correspond to changes in both the band gap and the refractive index
hex inverter
EN: hex inverterNL: zesvoudige inverter, hex-inverter
Definitie EN: a package,particularly an integrated circuit package,containing six separate inverters.Each inverter is a circuit with one input and one output,the output logic state always being opposite to the input logic state
hexagonal close packing
EN: hexagonal close packingNL: hexagonale dichte stapeling
Definitie EN: the case where succeeding planes are stacked so that the third layer duplicates the x-y coordinates of the first layer
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