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What's the price of the LED light string?
- The LED panel lamp has 4 aluminum substrates on each side and has 2 aluminum substrates on each side. 600x600 is about 1.5 yuan each.s
The top LED lights always burn the bulb in series
- Do not know what kind of drive you are, try to reduce the current of LED, do not exceed the rated operating current of LED on the line. The method of reducing current is related to drive circuit, and the current limiting method is different for different circuits.s
Who knows how the controller of outdoor LED lights can be protected against water?
- There are grades of waterproof and dustproof, and the methods from 0 to 9. are different!I think you should use, can prevent the rain, and shallow water immersion!This is easy to handle. When the controller is made, if it has a shell, touch 703 glue at the joint! General circuits are frequently usedIn fact, many LED production plants have LED filling glue and waterproof!s
Low voltage LED lamp string resistance is how to count, there is no formula?
- Diode products cannot be calculated by resistors.s
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)s
LED lights string broken, how to repair?
- LED lights string broken: you can check one by one, which is bad, which change.s
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.s
The color temperature of LED light string
- Refers to a standard blackbody heating, the temperature rises to a certain degree when starting from the color red - Orange - red - white - blue, gradually changed, a light source and the blackbody with the same color, we will at the time of the absolute temperature blackbody called the color temperature of the light source.s
What's the advantages of truck strobe lights
- Truck strobe lights are available in 4 and 6 head kits. Kit includes lighted toggle switch, 4 bulbs, 2 - 20 ft cables and 2 25 ft cables.It can be used in engineering vehicles: Exc...
How much does a traffic light weigh
- Traffic lights, big and small, how much does a traffic light weigh, the need to points. Now in almost every intersection traffic lights, which is "traffic cop" don't ...
How does the traffic light system work
- Everyday, on your way to work, no matter you drive your own car or take a public transportation, you will meet a lot traffic lights which keep the whole city’s traffic under cont...
The story about carolina lighting
- When Jan Clouse was building her Mount Pleasant home, she went to a lighting store to see about a pair of gas lanterns for her front door. The somewhat flustered clerk told Clouse ...
Do you want to have best outdoor lighting
- Beautiful lighting should never be limited to the interior of your living space. This spring, dress up your home's patios, porch areas, deck, and walkways with lovely pieces th...