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The LED lamp can change the light bulb
- Working voltage is totally different, it is necessary to change the circuit to replace the ordinary lamp; Suggest direct purchase of LED lights to replace more practical and fast, can also practice a maintenance.s
Three lights in parallel, and should be how the resistance of the step-down series?
- 6 V battery should use free WeiHuXing 4 ah lead-acid batteries, the charging voltage should be 7.2 V ~ 7.5 V, and to have full automatic protection function. Can't use 10 v charger. Don't know what LED lights you choose? The working current? Positive pressure drop? These have a connection and choose the series resistance and the dimming.s
What kind of USB power adapter for a LED light source is a USB power supply lamp?
- On the market to buy the USB power supply, the output voltage 5 v dc, can plug in the USB lamp, power supply directly.s
LED lights it is transistor luminescence is not pure resistance filament bulbs, when dimming voltage changing, the frequency is changing so affect rectifier, sudden high voltage will burn out the LED.
- Energy-saving lamps, color rendering index above 80, it has a variety of color temperature. Read a book, I suggest to use 4000 k; High color temperature advantageous to concentrate, but Dazzling; Low colour temperature of concentrate. When reading a book, lamp writes a 1.5 meters, 300-350 lux. So-called energy-saving lamps, is high frequency, otherwise, it is not energy-saving lamps.s
Home to buy led desk lamp is broken? Can someone fix it?
- There are also a lot of emergency, at present is that several kinds of the most common, actually what led desk lamp is broken, this also need careful maintenance and care for at ordinary times, avoid to touch water, avoid excessive lamp switch frequently, it will affect the use of lamps and lanterns, anyhow how bad how to solve, most people do in led desk lamp is broken, is discarded, to buy one, this way is not no, since the advocating environmental protection, can repair to reoccupy is also a very good treatment.s
How long will leds last?
- Comparing to conventional light bulb is very durable. LED in general notes, can be used more than 50000 hours, and some producers to promote their LED can operate 100000 hours. The main problem is that the LED is not a simple operation, no longer its rated life cannot use traditional lamps and lanterns of measure method to calculate. In fact, when testing the LED life, no one will stay beside waiting for it to stop working. However, there are still other ways to calculate the service life of the LED. LED is lasting, because it won't produce filament fuse problem. Leds will not stop working directly, but it will gradually degraded over time. Forecasts suggest that high quality LED after 50000 hours of continuous operation, also can maintain more than 60% of the initial degree of the light. Assumes that the LED has reached its rated service life, in fact, it may still be shine, just the light is very weak. Want to prolong the service life of the LED, it is necessary to reduce or completely dispel the heat energy produced is the LED chip. Heat energy is a major cause of leds stopped working, LED the life of the related to LED chip and ELDerly drivers.s
Are LED lights compared to dc lights?
- We use alternating current (ac) is a stroboscopic, is 50 times a second, but should not be visual. If you buy the dc LED lamp, there is a power saving advantages of high brightness, it can be said to be no stroboscopic, by using dc. You can buy it now, is this your smart move.s
Led desk lamp suits, how many watts of the led lamps are very high colour temperature
- The power of 1.6 W as small obviously a big gap compared with the fluorescent minimum 11 W. Now you are in the best tube is short of the brightness. Its advantage is to save electricity, if you want to look good will have to buy a 7, 8 W above.s
What's the price of led downlight
- There are many advantages of led downlight.For example,1,Security:LED is supplied by low-voltage power, so it is safer than supplied by high voltage power ,it is particularly appli...
What's the advantages of led strobe light
- Led strobe light can be used at Truck, bus, off road vehicle, atvs, boat, engineering vehicles(excavator,treedozer,road roller,bulldozer,crane and mining truck etc.), special vehic...
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...
How do traffic light sensors work
- Sensor is a kind of testing device, can feel the measured information, and will feel information, according to certain rules transform into electrical signal or other required info...
How do the flashlights work from the aspects of diode
- A flashlight, it is a kind of handheld electronic lighting tools. A flashlight typically have a via a battery-powered light bulbs and focused on the mirror, and a hand-held shell f...