Industry news

2016February

LED lamp filament lamp three driving technology features a full range compared

From: www.szbako.com Data:15/02/2016

To LED filament light crystal chandeliers, lights a candle, a ball bubble lamp, wall lamp, LED lighting products, applicable occasions: Five Star Business Hotel, high-end luxury residential indoor lighting. In this paper, we will make a full range contrast to the three large &mdash of the filament lamp driving scheme; — resistance capacitance reduction, linear constant current, IC constant current — &mdash.
one, LED filament driven classification
1;
 , from the drive point of view, LED filament power supply is divided into three categories: resistance capacitance buck; linear constant current; IC constant current.
 
2, from the structure point of view, LED filament power supply is mainly divided into two categories: all glass plastic parts; with plastic parts. The plastic parts also need to distinguish between lamp types, such as E26/E27/B22 is a kind of E14/E17 is another class.
 
second, three kinds of LED filament driving scheme of main features of the
  shown below
from left to right: a resistance capacitance step-down, linear constant current, IC constant current resistance
capacitance step-down, linear constant current, IC constant flow
1, resistance of andcapacitive relief: small size, low cost, voltage change is not constant current, flash, easy EMC, poor anti lightning surge, difficult to through export certification, in power system protection of the poor area very easily damaged.
 
2, linear constant current, small size, low cost, voltage changes in a small range of constant current, no stroboscopic 30cm, easy EMC, high calorie, in grid voltage fluctuations larger areas easily because of the heat damage.
 
3, IC constant current: the number of components, the cost is slightly higher, varying voltage constant current accuracy, no stroboscopic, EMC, the protection of the most comprehensive.
 
three, 3 LED filament driving scheme of full contrast
3 LED filament driving scheme of full range compared to
 
 
, four common parameters of LED filament driving;
1, input specifications:
 
for power grid region of AC220V (Asia and Europe) filament lamp power usually adopts Buck step-down architecture comparison of economy;
 
for power grid region of AC110V (North America, Japan etc.) filament lamp power usually adopts Buck-Boost buck structure more reasonable, still can output to 150V;
 
2,
  output specifications:
candle lamp 2W, 3W, 4W output voltage 150V, output current is 12mA. 17mA, 24mA
bulb 2W, 4W, 6W output voltage for 130V/150V, output current is 12mA, 30mA, 45mA
five, led filament and a filament driven standard recommendation of
currently led filament specifications are not unified, some filament is 75V, 10mA; some is 65V, 10mA. In sealed bubble, some 2 on, some on, this does not facilitate filament and driven ordering and stocking.
  the characteristics of
integrated resistance capacity and IC constant current two schemes. We recommend that you use the 10mA, 75V of the filament, when the bubble to do 2 series.
on the one hand, this is a small current, low loss, high power efficiency, high efficiency of the whole lighting; on the other hand, it is also easy to standard, inventory production. Especially the latter, can solve the current filament driven, due to the style and more, can not prepare inventory, delivery is too long.
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