The putting forward of the problem
In general, at least in the 1W above call high-power LED power。The 1W, 3W, 5W, 8W and 10W is common on currently，Which is known as the “green light”, is moved to new development direction that a large current (300mA ~ 1.4A), high efficiency (60 ~ 120lm / W), adjustable brightness。However, the LED current is determined the luminous intensity of high power LED。LED current is too strong will cause the LED lighting is too weak, the current is too weak will affect LED luminous intensity,and therefore need to provide constant current LED driver power to ensure power safety LED use, but also need to meet the expectations brightness requirements, and ensure that each the LED brightness, color consistency. So, traditionally used to drive the bulb (tungsten wire), power fluorescent lamps, energy saving lamps, sodium lamps and other light sources are not suitable for direct drive high power LED. LED Driven by mains power supply also need to address the buck, isolation, PFC (power factor correction) and constant current problem, need a higher conversion efficiency. Currently, there are thousands of models dedicated high-power LED constant current driver chip on the market, Most adopt a dedicated hysteretic converters of chip, low voltage input range, boost, buck can, PWM control, power switch can be internal or external, the output current can reach 1.5A, the built-in overvoltage, undervoltage, open / short and temperature protection circuit.

Herein head light heat is too high, heat dissipation requirements are quite high, operation process a lot of problems.so many users are very headache. Another problem is light failure (lighting loose)，large power consumption and high cost of replacing the light source, resulting in the technical requirements are also high up for manufacturers in the production. with low-cost to induced ignorance customer of manufacturers that production of substandard products and no technical force。Appears in engineering problems frequently。
Here would like to thank The LED manufacturers in domestic, The LED manufacturers created a precedent in this LED industry, make high power head light with single LED COB. If we do not error in our memory, the first head light with 3PCS 3W lamp is the so-called 15W LED small head. In the conditions of superiority, soon other LED manufacturers imitation of that product is perfect. So many LED manufacturers will benefit from this product, so this is not only our domestic lamp pride, we have to thank the very visionary boss of LED manufacturers。LED single chip high power head light now has 27W lamp, 50W lamp beads 3 prism effect,
80W 100W 5 lamp beads 5 prism effect. The 100W lamp can be ultra conventional 250, compared with the conventional 575. But the color temperature of LED and conventional lamp everybody should know, if the color temperature requirements is demanding we suggest that still continue to choose the regular lamp。Because this is fundamentally different.At present, many of our customers in some places slow shark bar using our LED head spotlight 30W and 50W, the time has been more than half a year, Giving satisfaction sufficient to meet a demand form the customer at present。Because the main purpose is to help them solve the problem after service。 The need to replace the light source, power of temperature is small, the failure rate is very low. But these customers also reflects some problems, long life, light a long time can be used, their business may be affected. Because this lamp has the advantages of low cost, long service life at present, use a year without a problem, maintenance costs can buy a conventional head light. The use of time longer, in this way ，work not easily for retail business.