5W MR16 COB LED Spotlight Silver White Black Housing Color

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5W MR16 COB LED Spotlight Silver White Black Housing Color

Specifications:

Features:

1. Adopted with Epistar COB LED chip,to ensure high brightness10 times as incandescent lamp.

2. Top brand LED driver in China for better stablility.

3. High efficiency,energy saving up to 80%.

4. Long lifespan up to 50000 hours.

5. AC/DC12V Low voltage operation,safe and reliable.

6. Eye-friendly,high render index,no flash.

7. CE&RoHS approval.

5W MR16 COB LED Spotlight Silver White Black Housing Color

Q: 220vled water lamp string how to connect, that is, 220 of the electricity: The time of the water lamp is controlled by adjusting the capacity value of the capacitor.

Q: The number of lights in the LED string: In general, 1210 specifications of the band is 60 LED per meter, 5050 specifications of the band is 30 LED per meter, the special has 60 LED per meter.

Q: What's the average luminous current of an ordinary LED lamp string?: General LED patch to 0.2W, 0.5W, 0.2W lamp current is 60mA, 0.5W beads 150mA,

Q: How does the LED light string flash?: Because of the special volt ampere characteristics, LED can not use constant voltage driving mode, but is driven by cross flow. The direct drawback of cross flow drive, however, is heat. So people invented the drive mode of pulse drive. For example, 0.5 seconds per second, so that the amount of heat in the LED is reduced by half. Then turn the frequency up to 100 times per second, lighting for 0.005 seconds each time. At this point, the power of the LED is not the same, and people do not feel blinking. What's more, in this driving mode, an approximate cross flow drive (that is, the current is not necessarily precise) can be simplified, which simplifies the drive circuit (the precise cross flow source is very complex)

Q: Performance and characteristics of LED lamp string: 1.LED light string is good. The colors are red, yellow, green, blue, white, warm white and so on;2.LED lamp has the advantages of convenient installation, after one-time injection waterproof, waterproof grade IP65, installation of plastic card, do not need any accessories, you can direct the word in the hole and fixed installation;

Q: Example: if I want to do a 40 head low voltage lamp string, do 10 lights, 1 loop, transformer is 150MA, then how can I calculate the resistance? The grid is 60 Hz of China's power grid! Give a formula, and then count the examples. What is it?! Thank you: If you direct the transformer to the LED lamp power supply, the life of the LED lamp will be affected, far less than the nominal value.

Q: Rated voltage of LED lamp string: When normal luminescence, each LED voltage drop is more than 2 volts, the current is about 15mA, to use 220V direct current should be connected in series with nearly one hundred led, or in the LED circuit series resistance, so that the series circuit current is about 15ma.

Q: What is the connection distance of the LED light string?Be specific: When the installation must be installed according to the manufacturer's requirements, do not let the LED lamp string overload operation. I use the Zhongshan Greenman, which has detailed instructions, easy connection

Q: Why are there three lines for the controller of the LED light string? What are they?: Common positive (red line +) is the positive pole for each street lampThree road cycling (blue line) this four lines are respectively connected with the four colors of LED tube anode side run. When the positive pole is connected to the common cathode, remember that the resistor must be connected first to connect to the positive electrode of the LED tube. The bright output (white) is the word to make it bright

Q: LED lights string broken, how to repair?: As an emergency treatment, you can also short-circuit the open circuit of the LED lights. Used to restore normal work.

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