LED Bulb Light 3W/5W/7W/9W/12W led bulb e27

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Product Description:

LED Bulb Light 3W/5W/7W/9W/12W led bulb e27

 

PRODUCT FEATURE

Voltage:100-240V, 3 year warranty, High PF, 
Good heat dissipation, Related Aprrovals


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Q:What are the power connections for the LED light string?
If you do not want to use a power to control each LED lamp string, can switch power to buy a relatively large power for the total power supply, then put all LED light on the input power (all parallel wire size is not enough, can also extend) unified by the total power switch.
Q:Low voltage LED lamp string resistance is how to count, there is no formula?
Diode products cannot be calculated by resistors.
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:How do you connect the LED lights?
A series of even parallel. Are not clear, boss, you want to use LED do what?There is a gap, which is the positive pole of the LED (usually the long foot is short and the foot is negative)
Q:Who knows how the controller of outdoor LED lights can be protected against water?
You can use the plastic wrap, mouth down, so even if again under the rain is not bad. Or glue the entire controller to the point where the water is likely to enter the water.
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:I want to do a string of LED lights that can use batteries. About 55 or so. The lights are 5MM blue. How can I work? Urgent urgent!!
If it is a general common blue LED working current is 20 mA, voltage of about 2.5V can be lit, the battery power can be used in parallel, the benefits of this connection is one of the damage does not influence the normal operation of other LED. And each LED string to a current limiting resistor, LED protection lamp, prolong life, calculation formula of the resistance for V / 0.02A=: voltage current resistance: 3V, battery powered =3 / 0.02=150. You want to supply 55 LED batteries to work together, the total current is up to 0.02x55=1.1A, i.e. 1AH (ah) capacity of the battery can work 1 hours or so.
Q:LED lights string broken, how to repair?
Connect the electricity. Can be shorted one by one. It's shining. This is just short of bad beads.
Q:Performance and characteristics of LED lamp string
1.LED lamp string can handle perforation lamp string processing;2.LED lights string may through seven colors and full-color controller to achieve colorful jump, gradient, monochrome, full-color, fluttering and other effects.
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.

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