Malo sam kopao info o prigusnicama, i naletio na par zanimljivih stvari sto se tice elektronskih prigusnica :
"Ballast Factor is the measure of the light output (lumens) of a ballast and lamp combination in comparison to the ANSI standard ballast operated with the same lamp. Electronic ballasts generate 10% more lumens, per watt, verses electromagnetic ballasts, due to the high frequency operation of the fluorescent lamps.
A simple way to think of Ballast Factor is as a Multiplier. Simply multiply the ballast factor times the rated lumens of the lamp to get the amount of lumens produced from the lamp/ballast combination
Electronic ballasts have three main features that make them very desirable.
1 - High Frequency Operation
Standard and low loss ballasts operate the lamp at the mains frequency of 50Hz. This means that the lamp produces light as the voltage goes positive, and again as it goes negative. However there is no light produced by the lamp as the mains voltage goes through the zero crossing region. This short cut-off time at 100Hz can be noticed by the eye and is called 50Hz flicker. Flicker is one of the reasons that people find fluorescent lighting uncomfortable. An electronic ballast operates at above 20,000Hz which puts the flicker rate at over 40,000Hz, which is far beyond the perception of the eye.
2 - Lower Energy Losses in the Ballast
The wasted energy in an electronic ballast operating with a 36 Watt lamp is 4 Watts compared to 9 Watts for a standard ballast.
3 - Some electronic ballasts can be dimmed from 100% light output down to 1%."
Ili po naski i ukratko: elektronicke prigusnice daju 10% VISE lumena svijetlosti PO WATT-u zato jer rade na visokim frekvencijama, a gubici su manji (gubici kod elektromagnetske prigusnice - grijanje iste)
Gubitak izrazen u W za fluo cijev jacine 36W - elektronicka prigusnica = 4W, elektromagnetska = 9 W
Najvise me drila onih 10% lumena po W kod elektronicke...samo da im je cijena jedno 50% manja
Tema: Prigusnica - objasnjenje (Posjeta: 16797 vremena)