dark current

Finnish translation: pimeävirta

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English term or phrase:dark current
Finnish translation:pimeävirta

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09:54 Mar 6, 2010
English to Finnish translations [PRO]
Science - Physics
Additional field(s): Electronics / Elect Eng
English term or phrase: dark current
Definition from Tyco Electronics Corporation:
The thermally induced current that exists in a photodiode in the absence of incident optical power.

Example sentence(s):
  • This voltage may be as low as 10 mV or as high as 50 V and the dark currents may vary from pA to μA depending upon the junction area and the process used. Dark current is always specified at a particular value of reverse applied voltage. optoelectronics.perkinelmer.com
  • The photodiode noise in is the sum of the thermal noise (or Johnson noise) ij of a resistor which approximates the shunt resistance and the shot noise isD and isL resulting from the dark current and the photocurrent. Hamamatsu Corporation
  • Dark current is dependent on temperature. While dark current may initially be low, it will increase as the device temperature increases. tpub.com
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pimeävirta
Definition:
Pimeävirta on signaali, jonka havaintolaite (esimerkiksi fotometri tai CCD-kamera) tuottaa, vaikka siihen ei osuisi lainkaan valoa. Pimeävirta syntyy ilmaisimen atomien lämpöliikkeestä, ja sitä voidaan usein vähentää jäähdyttämällä ilmaisin.
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Asta Haarasilta
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Summary of translations provided
4 +2pimeävirta
Asta Haarasilta


  

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1 day 5 hrs   confidence: Answerer confidence 4/5Answerer confidence 4/5 peer agreement (net): +2
pimeävirta


Definition from Turun yliopisto, Tuorlan observatorio:
Pimeävirta on signaali, jonka havaintolaite (esimerkiksi fotometri tai CCD-kamera) tuottaa, vaikka siihen ei osuisi lainkaan valoa. Pimeävirta syntyy ilmaisimen atomien lämpöliikkeestä, ja sitä voidaan usein vähentää jäähdyttämällä ilmaisin.

Example sentence(s):
  • Mitä lämpimämmäksi käyttöolosuhteet nousevat, sitä suuremmaksi muodostuu myös kohina, jota voidaan myös kuvata pimeävirran (dark current) voimakkuudella. - Oulun yliopisto  
  • Pimeävirran määrä on vahvasti riippuvainen kennon lämpötilasta: Jokainen 6°C pudotus kennon lämpötilassa laskee kennon kohinan määrää puoleen. - Tähtitieteellinen yhdistys URSA  
  • PTC-menetelmällä[1] voidaan määrittää kameralle - Lukukohina/pimeävirta(dark current) - Tampereen teknillinen yliopisto  
Asta Haarasilta
Local time: 06:36
Native speaker of: Native in FinnishFinnish
PRO pts in category: 4

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  -> Kiitos!

Yes  Alfa Trans (X)
29 days
  -> Kiitos Marju!
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