LED filament drive program: First, the RC capacit […]
LED filament drive program:
First, the RC capacity: small size, low cost, constant voltage changes, there are strobe, easy to EMC, anti-lightning surge, it is difficult to pass certification, in the power grid protection area easily damaged.
Second, the linear constant current: small size, low cost, constant voltage range of constant current, 30cm no flicker, easy to EMC, heat, large fluctuations in the grid voltage fluctuations in the region due to heat.
Third, IC constant current: more components, the cost is slightly higher, the voltage change constant current accuracy, no flicker, can be EMC, the protection of the most comprehensive.
Fourth, LED filament lamp and filament drive the standardization of recommendations
The current specifications of the LED filament lamp is not uniform, and some filament is 75V, 10mA; some are 65V, 10mA; in the bubble, some 2 strings, some is a string, so easy to filament and drive the order and stocking.
Integrated resistance and IC constant current two programs. It is recommended that you use 75V, 10mA filament, when the bubble to do 2 strings.
On the one hand, doing this LED light filament current is small, loss is small, power efficiency is high, the whole light is high; on the other hand, it is easy to standardize and inventory production. Especially the latter, can solve the current filament drive, because the style and more, can not prepare inventory, delivery is too long unfavorable situation.