Wyniki wyszukiwania - BazTech

1

Assessment of methods of marking LED sources with the power of equivalent light bulb

Tabaka P., Rozga P.

Bulletin of the Polish Academy of Sciences. Technical Sciences

|

2017

|

Vol. 65, nr 6

883--890

EN

This article presents considerations on the assessment of marking LED sources with the power of an equivalent light bulb. This problem was studied both on the basis of calculations and measurements performed. 17 LEDs of different powers and luminous fluxes were tested. Calculations assessing conformity with the declared power showed that an important disadvantage for most of the LED sources results from the method of marking them with the power of an equivalent light bulb from the point of view of the luminous flux emitted. Manufacturers do not do this correctly, misleading the potential user. Meanwhile, measurements performed in different ambient temperatures indicated that for only 4 from among the 13 LED sources studied the given value of the power of an equivalent light bulb may be recognized as in accordance with the actual state of affairs and still with a reservation that specified ambient temperature shall be required. In other cases the values of power quoted are either understated or overstated.

2

O potrzebie powrotu do parametrów fotometrycznych źródeł światła

Żagan W.

Wiadomości Elektrotechniczne

|

2013

|

R. 81, nr 5

44-45

PL

Przedstawiono praktyczną propozycję charakteryzowania źródeł światła za pomocą parametrów fotometrycznych: strumienia świetlnego i temperatury barwowej lub światłości, temperatury barwowej i kąta użytecznego wiązki świetlnej.

EN

The paper presents practical proposal of description of light sources using photometric parameters: luminous flux and colour temperature or luminosity, colour temperature and usable angle of light beam.

3

Research on photometric and colorimetric parameters of selected types of metal halide lamps

Zalesińska M.

Poznan University of Technology Academic Journals. Electrical Engineering

|

2009

|

No 60

225-231

EN

Metal halide lamps are light sources undergoing considerable development. They combine the advantages of high luminous efficacy and good colour rendering. At present it is possible to use metal halide lamps as direct substitutes of high pressure sodium lamps. Lamps of a selected type were subject to laboratory tests at the Institute of Electrical Engineering and Electronics. The tests were aimed at checking the actual colorimetric and photometric parameters of lamps.

4

Wpływ środowiska pracy na zmianę parametrów fotometrycznych punktów świetlnych w oświetleniu drogowym

Zalesińska M.

Nowa Elektrotechnika

|

2005

|

nr 2 (6)

26--27

5

Badania porównawcze wybranych typów zintegrowanych świetlówek kompaktowych

Górczewska M., Gandecki A., Kędziora W., Zalesińska M.

Przegląd Elektrotechniczny

|

2004

|

R. 80, nr 5

461-463

PL

W artykule prezentowane są wyniki pomiarów oraz ocena jakościowa parametrów fotometrycznych i elektrycznych zintegrowanych świetlówek kompaktowych takie jak: moc, strumień świetlny, trwałość, temperatura barwowa.

EN

The result of photometric and electrical parameters measurements of self-balasted lamps: i.e. power, luminous flux, life-time, average life-time, colour of the light, there are presented in this paper.