Buy what good LED lamp? How to judge the quality of lamps and lanterns is good or bad
Drive power supply, and good driving power can guarantee the overall life of the lamps and lanterns, LED the theory of life and the life of the general drive power supply is 100000 hours less than 100000 hours. In order to guarantee the overall life of the lamps and lanterns, driving power supply is also a key link; On the other hand must be LED constant current drive, if using a low-cost constant voltage driver will shorten the service life of the LED. As an ordinary consumers how to identify the LED driver power supply of the good or bad? See a few parameters, droop, service life, light efficiency, and quality assurance period. To provide quality assurance for a long time factory production quality LED lamps and lanterns is good.
Of high power LED light source or straw hat lamp or LED piranha type; LED lighting lamps and lanterns USES the high power LED as light source, the price is higher; Straw hat lamp or piranha LED price is very cheap, not suitable for the light source of lamps and lanterns lighting level.
Lights, namely the number of lumens per watt, LM/W, he reflects the energy-saving performance of lamps and lanterns, power saving, the more good lamps and lanterns, the higher light efficiency. Current leds and compact fluorescent lamps and lighting, with the improvement of LED lights, CREE possible amount of output this year 186 lm/w illuminant. Cash supply high power DC - DC DC converter, DC booster, 36, 48 v/v / 60 v electric inverter, electric vehicle intelligent DC converter. 24 v - 72 v electric vehicle controller, etc...
Droop, good LED lamps and lanterns in 25000 hours before the light failure < 30%; Decided to light the main factor of failure is the stand or fall of light source, heat dissipation structure difference; Foreign original factory packaging of high power light source, such as CREE light source the light of the light source of failure is better than that of domestic packaging, as amateur can't see the light source, simple way of judging the main is the price that foreign light source of the original light source is domestic packaging price much higher; So if you want to buy good quality LED lamps and lanterns must provide light source manufacturer information.
