GE Lighting - BCN servilux
GE Lighting - BCN servilux
GE Lighting - BCN servilux
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102<br />
studio lamp<br />
100<br />
80<br />
60<br />
40<br />
20<br />
3400K<br />
3200K<br />
3000K<br />
0<br />
300 400 500 600 700 800<br />
wavelength (nm)<br />
Spectral energy distribution can be shown in absolute terms whereas<br />
radiation in terms of visible light is related to the response of the<br />
human eye. (Spectral distribution chart on previous page)<br />
relative energy Total spectral energy distribution of typical<br />
<strong>GE</strong> LIGHTING - ENTERTAINMENT LIGHTING CATALOGUE<br />
Operating Temperature of Tungsten Halogen<br />
Studio Lamps<br />
The following maximum and minimum temperatures are suggested<br />
for optimum life. Operation outside these figures will not<br />
necessarily cause immediate failure but will affect life adversely<br />
to an increasing extent.<br />
Seal - 450°C maximum<br />
Above this figure the sealing foil oxidises at a rate increasing with<br />
temperature and is frequently the cause of short life due to seal<br />
failure.<br />
Bulb - 250° - 800°C<br />
Outside this range the halogen cycle becomes less efficient and<br />
blackening may occur. Temperatures above 1200°C will cause<br />
the bulb to soften.<br />
Pins - 350°C maximum<br />
Above this figure the plating on the pins may lose adhesion and the<br />
contact will deteriorate. Such deterioration may form local hot<br />
spots which rapidly worsen and may result in arcing and<br />
irrepairable damage to both lamp and holder. Should signs of this<br />
be evident on removal of a failed lamp, it is important that a good<br />
contact is restored by replacing the lampholder before the next<br />
lamp is fitted. Otherwise the new lamp will rapidly fail in a similar<br />
manner.