Glossary entry

English term or phrase:

dark current

Serbian translation:

tamna struja

Mar 6, 2010 09:54
14 yrs ago
English term

dark current

GBK English to Serbian Science Physics
Definition from Tyco Electronics Corporation:
The thermally induced current that exists in a photodiode in the absence of incident optical power.
Example sentences:
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)
Proposed translations (Serbian)
5 +2 tamna struja
Change log

Mar 5, 2010 13:30: changed "Kudoz queue" from "In queue" to "Public"

Mar 6, 2010 09:54: changed "Stage" from "Preparation" to "Submission"

Mar 9, 2010 10:57: changed "Stage" from "Submission" to "Selection"

Mar 9, 2010 11:54: changed "Stage" from "Selection" to "Completion"

Proposed translations

+2
17 mins
Selected

tamna struja

dark current - tamna struja, ref. Rečnik savremene elektronike, Dr Branimir Lolić
Definition from CET čitalište:
Tamna struja se može definisati kao nepoželjno naelektrisanje koje se prikuplja u CCD pikse-lima usled prirodnih termalnih procesa koji se pojavljuju dok uređaj radi na bilo kojoj temperaturi iznad apsolutne nule. Na bilo kojoj temperaturi parovi elektrona i šupljina slučajno se stvaraju i rekombinuju u silicijumu i na granici silicijuma i silicijum dioksida. U zavisnosti od toga gde su stvoreni, neki od tih elektrona će se prikupiti u CCD izvorima i lažno prikazati kao naelektrisanja signala na izlazu. Velike tamne struje ograničavaju korisnu upotrebu uređaja, jer je proces stvaranja slučajan, pa tamna struja doprinosi šumu.
Example sentences:
Za čitav opseg energije (0.2-14 MeV) tamne struje linearnog akceleratora kalibracija je proizvela dovoljne intenzitete. (Matematički fakultet, Beograd)
Kao najoptimalniji odnos između osetljivosti i tamne struje fotomultiplikatora odabran je radni napon od 1 kV. Struja fotomultiplikatora merena je univerzalnim mernim instrumentom DC mikrovoltmetrom Philips PM-2436/06. (Prirodno-matematički fakultet, Novi Sad)
Peer comment(s):

agree V&M Stanković : da, a može i “struja mraka” i struja tame”
2 hrs
Hvala!
agree Milan Djukić
3 days 45 mins
Hvala!
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4 KudoZ points awarded for this answer.
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