Factory direct wholesale new product portable usb led light rich colors usb led lights

Inquire Now

OKorder Service Pledge

Quality Product, Order Online Tracking, Timely Delivery

OKorder Financial Service

Credit Rating, Credit Services, Credit Purchasing

Brand Name:	Lianfali	Model Number:	usb Light	Place of Origin:	Guangdong China (Mainland)
Use:	Computer	USB Type:	Other	ODM/OEM:	support

Packaging Detail:	Carton
Delivery Detail:	3-15days

Features:

1.By using low rated voltage 5v,power 1.2,safety and high efficiency.

2. Connectable to USB ports on any iBook, PowerBook, Cube or PC notebook.

3. Plug and play

4. Powered by USB port, no external power needed

5.Usb led light for night work

Factory direct wholesale new product portable usb led light rich colors usb led lights

Q: The top LED lights always burn the bulb in series: A simple circuit based on resistance current limiting can only be adjusted with current resistance.

Q: How do you connect the LED lights?: LED lamp can string together end to end, with more than 24 fluorescent lamp series, bulb lamp with 5X1W5 lamp series, and 6 series and 14.

Q: Hanging on the tree string lights, each one is 10 meters long, with a controller, I asked the factory with the AB protection, but the manufacturers say that only do the general anti rain, no water, even the rain stop, I want to use plastic wrap, don't know? Which expert can give advice and advice? emergency: Now the market has launched a LED string lamp controller. Professional rainproof. You should be able to buy it at the big mall!!!

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: How does the LED light string flash?: What kind of light? What about the flash?If you are talking about the pulse drive mode of LED, then it is for heat dissipation and energy saving.

Q: Section LED lantern, no controller, can shine principleTwo now reduced brightness string string: LED string:Light emitting diodes, referred to as LED, are made from compounds containing gallium (Ga), arsenic (As), phosphorus (P), nitrogen (N) and so on.

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: In general, LED lamps need constant current to drive, and the voltage may be adjusted according to the aging degree of the LED lamp.

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: 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: 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!!: You can use the 4~6V battery, through the 4W, 2~3 Europe (6V with 3 Euro, 4V with 2 Euro) current limiting resistor, to the LED lamp power supply. The parameters of each lamp are: 3V, 20MA, in parallel (polarity). If you don't quite understand, you can also ask a science and engineering student (preferably a teacher) to help.

Send your message to us

*Email

*TEL

*Quantity

*Unit