LED illuminates lamp

LED illuminates lamp the power to drive the related request of chip to the low pressure:
1.The mark that drives chip calls importation electric voltage the scope should satisfy DC8-40 Vs and apply the demand of noodles by overlay and bear to press such as can be bigger than a 45 Vs better;The simple bridge type commutates machine exportation when the AC 12 Vs or 24 Vs input electric voltage will with charged barbed wire net electric voltage motion, especially the electric voltage outputted while being higher the direct current electric voltage will be also higher and drive IC such as can not adapt to breadth electric voltage scope, usually will be broked through when the charged barbed wire net electric voltage goes up, the LED light source consequently is destroyed by fire.

2.The mark that drives chip calls to output electric current to have big request at the 1.2-1.5 As, is LED that illuminates to use light source, LED of the 1 W power light source its mark calls that the work electric current is a 350 mAs, LED of the 3 W power light source its mark calls work electric current as a 700 mAs, power greatly of need larger electric current, therefore LED illuminate the driving IC of lamp choice must have enough electric current exportation, must make to drive an IC work while designing a product at full negative output's 70-90% best work districts.Use driving of full negative exportation electric current the IC spread heat in the lamp narrow and small space Chang not, easy tired and lost efficacy in early days.

3.The exportation electric current that drives chip must last long Heng to settle, the LED light source then can stabilize to give out light, and the bright degree can't gleam;The same batch drive chip the usage is under the equal condition, it outputs electric current size to want to be consistent possibly, is also long-lost to have to be small, automating to produce on-line production in large numbers of quantity like this then can effectively and have a preface;If there is to the exportation electric current a driving of long-lost chips definitely necessarily choosing, the factory or devotion production line is at before divide file, the resistivity size of electric current enactment electric resistance(Rs) of the adjustment PCB plank, make of the LED lamp Heng of the production flow to drive plank consistent to the giving out light of the same kind LED light source bright degree, keep the consistency of end product.

4.Driving sealing of chip to pack should be advantageous to drive a chip tube Xin of quickly spread heat, such as bind tube Xin(Die) directly settle on the coin, also a Pin directly extend to seal to pack an outside, easy to directly weld a knothole copper the screen is at PCB up quickly transmit heat.Such as at an is similar to a 4 X4 mm of Huo slice tube Xin up, pass the electric current with 300-1000 mAs for a long time, by all means have a great achievement to consume, by all means will have fever, chip of physics spread hot structure is also to pass important.
5.Drive anti- EMI of chip, noise and bear high-handed ability to also relate to the whole LED the lamp product can pass attestations, such as CE and UL...etc. smoothly, therefore drive chip is designing Yi to start the production craft that will choose the excellent Tuo plain structure and high pressure.

6.The achievement of driving the chip oneself consumes to have small request at the 0.5 Ws, the switch works the frequency request is bigger than a 120 Hzs, in order to prevent work repeatedly interference but creation it is thus clear that gleam.