Q:How are LED lamp quality is good or bad?

Drive power. A good driving power can guarantee a whole lamp life, theory of life LED lamp is 100 thousand hours, and the driving power of general life ranging from less than 50 thousand hours. So in order to ensure the whole lamp life, LED lamp manufacturers tell you that the driving power is very important, and it is also one of the most critical components. On the other hand LED downlight must be a constant current power supply, if using constant voltage power supply low cost will greatly shorten the service life of LED lamp. Then, how can we identify the constant current power supply? You can see several parameters, service life, light, light effect and warranty period. If the service life is longer, the quality of the power supply will be relatively better.

Q:There are no holes 7 cm, 9W led downlight

Between general 7-12W hole 9.5 cm can be chosen, the LED lights our company own, opening 9.5 cm, 9-12W, 7W ceiling light is also your choice, to choose a bright power point, brightness not too big, choose a smaller power good enough!!

Q:How much LED 150W downlight spiral energy-saving lamp replacement

Ha ha, you need data150W energy-saving lamp with 60-70W LED mining lamp can,

Q:How to judge the quality of LED downlight

Determine the quality of LED ceiling lamp lighting effect, the United States and Taiwan LED chip chip chip, domestic chip etc.. Different brands, different prices, lighting difference is also large. Special low price downlight, make many use of chip production line down the defective products, color inconsistencies, brightness difference, short service life, users need to pay attention to.

Q:LED lamp power off why would light up

LED lamp power off, will light up, this situation is normal in the 220 electric power supply situation, reason is caused by the distributed capacitance charge discharge line.Because the switch and the lamp is connected with 220V/50Hz AC power supply is normal, directly added to both ends of the lamp, the lamp work light; when closed, switch capacitor and lamp itself and the line is connected to the alternating current of 220V/50Hz, because the distributed capacitance of the charge and discharge can form weak current, the lamp will light.Solution: in the lamp circuit board input end in parallel with a pressure resistance of at least 400V of non-polar capacitor, capacity 0.05 micro method above (if the switch connection is longer, can be appropriately increased).

Q:LED downlight downlight and how to distinguish?

LED lamp is a light source of a yellow dot, dot diameter of about one centimeter. The rear is a cylindrical aluminum radiator similar to a computer CPU radiator (and some have no, and no radiator is of poor quality)General downlight general light source is a small bulb, a bowl shaped reflector.The two lamps are easy to distinguish.

Q:Now there is no replacement of the LED light source lamp?

Replacement method:1, hold down a pull on the circular edge of the lamp down, there is a two spring clip.2. Remove the line from the lamp and replace the new light.Disconnect power before dismantling to prevent electric shock.

Q:How much is the general 15WLED lamp luminous flux.

Usually around 1200lm. Warm colors will be low, cool colors will be high.

Q:What brand of downlight is good? Please explain the reason, thank you!

Cost. From a cost perspective, the LED lamp price is about 3-10 times of the traditional lighting range, if the power of the time more than 6 hours a day, LED lighting is good, is expected about 1 years to be able to save money to buy a lamp; if one day 2-3 hours, it is not how much electricity the.

Q:The general living room to Amdo large size of the lamp?

Look at the size of the living room ceiling. Class one is. 10 cm downlight