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 Übersetzung für 'µV' von Englisch nach Deutsch
electr.unit
microvolt <µV>
Mikrovolt {n} <µV>
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Übersetzung für 'µV' von Englisch nach Deutsch

microvolt <µV>
Mikrovolt {n} <µV>electr.unit
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  • Mikrovolt {n} <µV> = microvolt <µV>
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Anwendungsbeispiele Englisch
  • The EF86 is much less noisy than other pentodes, but slightly noisier than some triodes at about 2 µV equivalent input noise to 10 kHz.
  • Signals of interest are in the range of 10 µV to 100 µV, over the frequency range of 1–50 Hz.
  • For a quantitative assessment, quality HF receivers are calibrated so that S9 on the S-meter corresponds to a signal of 50 μV at the antenna standard terminal impedance 50 ohms. One "S" difference should correspond to 6 dB at signal strength (2x voltage = 4x power). On VHF and UHF receivers used for weak signal communications, S9 often corresponds to 5 μV at the antenna terminal 50 ohms. Amateur radio (ham) operators may also use a signal strength of "20 to 60 over 9", or "+20 to +60 over 9." This is in reference to a signal that exceeds S9 on a signal meter on a HF receiver.
  • In Japan, no license is needed for devices with a signal strength of less than 500 µV/m at 3 meters.
  • For VHF(FM) / Band II, the BBC defines the service area boundary for stereo services as corresponding to an average field strength of 54 dB (relative to 1 µV/m) at a height of 10 m above ground level.

  • If the measurement result 20 dB is presented separately, it can be specified using the information in parentheses, which is then part of the surrounding text and not a part of the unit: 20 dB (re: 1 μV/m) or 20 dB (1 μV/m).
  • The Seebeck coefficient of uranium dioxide at room temperature is about 750 µV/K, a value significantly higher than the 270 µV/K of thallium tin telluride (Tl2SnTe5) and thallium germanium telluride (Tl2GeTe5) and of bismuth-tellurium alloys, other materials promising for thermoelectric power generation applications and Peltier elements.
  • 78 µV at the output. A 6 dB increase in PSRR roughly equates to an increase in attenuation by a factor of 2.
  • In electromagnetics, the antenna factor (units: m−1, reciprocal meter) is defined as the ratio of the electric field "E" (units: V/m or μV/m) to the voltage "V" (units: V or μV) induced across the terminals of an antenna.
  • In the 1930s, it was already agreed that S9 corresponds to 50 μV at the input terminal of the receiver, but this was not a measure of the power received as the input impedance of receivers was not standardized.

  • Dolphins have evolved electroreception in structures different from those of fish, amphibians and monotremes. The hairless vibrissal crypts on the rostrum of the Guiana dolphin ("Sotalia guianensis"), originally associated with mammalian whiskers, are capable of electroreception as low as 4.8 μV/cm, sufficient to detect small fish. This is comparable to the sensitivity of electroreceptors in the platypus.
  • According to the radio designer, intelligible speech can be detected 12 dB above the receiver's noise floor (noise and distortion). Regardless of how accurate this output power is regarding intelligible speech, having a standard output SINAD allows easy comparison between radio receiver input sensitivities. This 0.25 μV value is typical for VHF commercial radio, while 0.35 μV is probably more typical for UHF. In the real world, lower SINAD values (more noise) can still result in intelligible speech, but it is tiresome work to listen to a voice in that much noise.
  • The thermopile generates a small voltage in proportion to the temperature difference between the black coating surface and the instrument housing. This is of the order of 10 μV (microvolts) per W/m2, so on a sunny day the output will be around 10 mV (millivolts). Each pyranometer has a unique sensitivity, unless otherwise equipped with electronics for signal calibration.
  • Type E (chromel–constantan) has a high output (68 µV/°C), which makes it well suited to cryogenic use. Additionally, it is non-magnetic.
  • The characteristics of the CFM include the 'baseline' which should be more than 5 µV, the upper limit of the trace which should be more than 10 µV, and the presence of 'sleep wake cycling' whereby the trace is expected to narrow and broaden over time.

  • While not an example of "noise" per se, a resistor may act as a thermocouple, producing a small DC voltage differential across it due to the thermoelectric effect if its ends are at different temperatures. This induced DC voltage can degrade the precision of instrumentation amplifiers in particular. Such voltages appear in the junctions of the resistor leads with the circuit board and with the resistor body. Common metal film resistors show such an effect at a magnitude of about 20 μV/°C. Some carbon composition resistors can exhibit thermoelectric offsets as high as 400 μV/°C, whereas specially constructed resistors can reduce this number to 0.05 μV/°C. In applications where the thermoelectric effect may become important, care has to be taken to mount the resistors horizontally to avoid temperature gradients and to mind the air flow over the board.
  • The Seebeck coefficients generally vary as function of temperature and depend strongly on the composition of the conductor. For ordinary materials at room temperature, the Seebeck coefficient may range in value from −100 μV/K to +1,000 μV/K (see Seebeck coefficient article for more information).
  • The thermoelectric effect causes junctions of different metals to generate voltages if the junctions are at different temperatures (see also "thermocouple"). While these unwanted voltages are small, on the order of a few microvolts per °C, they can cause appreciable errors at the high accuracy of which the Kelvin-Varley circuit is capable. The errors can be minimized through proper design — by keeping all junctions at the same temperature, and by employing only metal pairings with low thermoelectric coefficients (down to the external connectors and cables used; for example, a standard 4 mm plug/socket combination may have a coefficient of 1 μV/°C compared to only 0.07 μV/°C for a "low thermal EMF" grade plug/socket ).
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