DS7840 OSRAM, DS7840 Datasheet - Page 65

• Manufacturer Part Number: DS7840
• Description: LAMP, DULUX, S, COOL, 7W
• Manufacturer: OSRAM

Specifications of DS7840

• Supply Voltage: 47V
• Base Type: 2 Pin
• Power Rating: 7W
• Luminous Flux: 400lm
• Length: 137mm
• Colour Temperature Typ: 4000K
• Svhc: No SVHC (15-Dec-2010)
• External Depth: 19.5mm
• External Diameter: 19.5mm
• External: RoHS Compliant
• Lamp Base Type: 2 Pin
• Rohs Compliant: Yes
• Average Bulb Life: 8000h
• Bulb Diameter: 19.5mm

Economical long-life light sources with plug-in bases.
Compact Fluorescent Lamps OSRAM DULUX
Technical Guide
64
6.3
Starters
In CCG operation, OSRAM DULUX
ignition. There is a choice of conventional glow starters or what are known as safety star-
ters, such as the OSRAM DEOS
whenever lamps are replaced to ensure trouble-free ignition. This is not necessary with
safety starters since they last four times longer than conventional starters. In addition,
safety starters reliably shut down burnt-out or defective lamps in inductive or capacitive
operation, which not only saves the choke but prevents annoying flicker from these lamps
as they reach the end of their life.
OSRAM DULUX
integrated in the base which ensures reliable ignition. Therefore they do not require exter-
nal starters.
OSRAM DULUX
and do therefore not have an integrated glow starter.
OSRAM DULUX
conditions with conventional control gear and an external starter. However, there are no
special optimised starters available on the market for this application. See also 3.2.3. In
this mode, considerable limitations can therefore be expected, such as greatly reduced
lamp life with electrode blackening and longer ignition times. For this reason, this mode of
operation is not recommended or supported by OSRAM.
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S, D and T (with two-pin bases) have a specially adapted glow starter
S/E, D/E and T/E (with four-pin bases) are designed for ECG operation
S/E, D/E and T/E (13, 18 and 26 W only) can be operated under normal
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starters. Conventional glow starters should be replaced
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L and OSRAM DULUX
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F lamps require a starter for
6. Accessories