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led bulbs high quality 50w led high bay light with bulb well

Led Bulb indoor Energy-Saving, Long Lifespan, Bright, Eye caring, good heat

Smart Led light Motion Sensor Light sensor Led Bulb E27 SMD 5730 Powerful Energy Led Lamp 220V

Led Candle Light indoor Energy-Saving, Long Lifespan, Bright, Eye caring, good heat

LED Bulb AR111 E27 3000k-4000K-5000K-6500k AR111 12W CRI 80 920 Lumen

Led Lamp Cup indoor Energy-Saving, Long Lifespan, Bright, Eye caring, good heat

LED Candle Light E27 /E14 3000k-4000K-5000K-6500k B45 3W CRI 80 250 Lumen Non Dimmable

LED Candle Light E27 /E14 3000k-4000K-5000K-6500k P45 7W CRI 80 600 Lumen Non Dimmable

LED high power bulb 30W 40w 50W 60W PF > 90

LED Bulb 10W 806LM E27/B22 2700K-6500K 25000H

FAQ

LED thread specifications for bulb bulbs?

Ordinary home E27 screw lamp ah, there is a need to ball on Taobao, art night lights, E27, E26, B22, E27 specifications in the majority! E27, E14, G10, E40 are more commonly used Oh!

Want to find common features, unified purchase accessories repair!

The proposed open, lamp is broken, can find light black or other unusual circumstances, bad power supply at the circuit board and components have the same burn what, under normal circumstances is such.

What material is applied to the glass cover of the LED bulb? Can reach 90% of the light, can not see the inside of the lamp. Who knows, thanks for telling!

Can reach 90% of the light, can not see the inside of the lamp

Will the power of the LED bulb grow longer and longer? Why?

Could you tell me the measurement method? - how about the side current and voltage? Or, whether direct measurement of active power under mains power supply?Also, can you tell me the circuit of LED bulb? DC power supply or AC power supply? Constant current module drive or RC current limiter? If the power supply is 12 volts low, is the resistor only current limiting?I feel something doesn't make sense......In one case, the longer the duration of the LED bulb, the greater the power:In some advanced LED bulb bulbs, an anti impact "slow start" circuit is added to the design, and a NTC (negative temperature coefficient) resistor is incorporated into the LED power supply circuit.Because of the larger resistance of NTC in cold state, the current of LED is smaller and the power is relatively small;With the use of electricity LED bulbs, NTC resistance temperature gradually increased, the resistance is reduced, the current of LED is also increased, so the power LED bulb also increases, temperature stability, until NTC resistance unchanged so far.

Why is 3W's LED plastic bulb so cheap on the market? Is there any drawback to the price difference between aluminum and aluminum?

Now the market LED lamps quality uneven. LED lamps need constant current and constant voltage drive to be durable. The cheap 3W LED plastic bulb power supply is only the drive of the resistance capacitance pressure drop. Drive rank: 1. constant current and constant voltage drive. 2. constant current non constant voltage drive. 3. constant pressure and no current drive. 4. resistance capacitance pressure drop drive (resistance capacitance voltage drop is the worst and cost is the cheapest)

Choose which light bulb LED bulb is the healthiest

For home use, you can select LED bulb below 8W, with a color temperature below 3500K

Led the bulb is flashing. What's wrong with it? How do you fix it?

The general power supply too much heat to stimulate the overheating protection function itself with the power supply, power supply is a protection device, when the heat is too large, may cause it has an adverse effect on power and light, power will take the initiative to make the lamp power, rest, fully dissipated heat later. Bright. So, this is the power overheating protection at work. It will not be the case if the outer shell is enlarged or the room is ventilated and the heat should be cooled.

What is the 15 Watt lumen of the LED bulb?

LM, refers to a candle (CD, Candela Candela, unit of luminous intensity, the equivalent of an ordinary candle light intensity) in a solid angle corresponding to the spherical cone ball (1 square meters of the unit sphere radius of 1 meters on the representative point of view, the corresponding section in the center angle of about 65 degrees the total emission flux) on the.