Mains Operated Led Light

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FAQ

LED lamp wattage? How much is the smallest biggest respectively?
The main characteristic is to save electricity, under the condition of the same brightness, than the ordinary energy-saving lamps save electricity more than half
Led lithium battery lamp, 0.5 a rated input current search. With the output of 1 a charger or mobile power no problem?
Charging current is a bit big, easy to cause the battery heating, out in the end. Or the cause of desk lamp current charging circuit for burning.
Led desk lamp and common desk lamp which is good
So the eyes see the LED light source for a long time, makes people dizzy, uncomfortable feeling, even will cause harm to eyes, make the risk of eye diseases will be improved. Remind, don't let the eyes looked at bright LED light source for a long time, so as to avoid eye damage. Led lighting use less as far as possible, the led is only suitable for auxiliary lighting
LED lamp in the 4 v lead-acid battery charging problem!
Dedicated charger generally 3 ~ 5 hours, about 200 ma small battery charging current, automatically stops charging. White led lamp voltage 3 v or so, so light is not on the discharge is lower than 3 v
LED desk lamp, very bright, when buy later with more and more dark
Rechargeable table lamp is power off. Perhaps others with bad throw to sell goods pick up on sale. Second hand.
LED lamp base fever is normal
Soon open lamp base is a bit hot, it is possible, because the LED need to drive to work, drive a similar electronic transformer, provide the LED constant current work, if the drive power design are critical, the switch of the transformer, power tube heat dissipation is not good, and relatively large current, will be hot
Elementary school students with what kind of table lamp is the best? The LED lamp?
Although I personally do LED lamps and lanterns, but I don't recommend LED desk lamp for children, and, after all, now the industry focus on blu-ray damage does not, as far as I know only a few manufacturers are doing. For child health, in energy saving at the same time can be measured and feel if I say wrong
What if the led lamp doesn't shine
If it is a line break have to pick up, if there is black spots is the LED surface that is was burnt out, that is about to change the LED. Many of the LED circuit adopts the series circuit, that is to say an LED bad throughout the series circuit will not bright. Generally LED not easy bad, usually a transformer is the most easy to bad. Open it and see it