D7BCT datasheet(27/54 Pages) OSRAM

Part #	D7BCT

Description	OSRAM DULUX® EL electronic energy saving lamps

PDF	54 Pages

Scroll/Zoom	100%

Manufacturer	OSRAM [OSRAM GmbH]

Direct Link	http://www.osram.com

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27 / 54 page

2. Function and technical design

OSRAM DULUX® EL – electronic energy saving lamps

Economical alternatives to ordinary light bulbs

Technical Guide

2.2.2 Energy savings

thanks to electronic

control gear

Compared with fluorescent lamps with conventional control gear, there are further

energy savings of around 20 % with electronic control gear.

This is due essentially to two effects:

• The losses with electronic control gear are only about one third of the losses with

conventional control gear.

• The luminous efficacy of a fluorescent lamp shows a significant improvement of

around 20 % at high frequencies, with saturation setting it at around 50 kHz.

Fig. 4: Luminous efficacy of a fluorescent lamp as a function of the operating frequency

100

105

110

Frequenz f

Frequency

D7BCT Datasheet(PDF) 27 Page - OSRAM GmbH