Light Bulb For Desk Lamp

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FAQ

Are LED lights compared to dc lights?

The desk lamp of ordinary incandescent light bulbs with energy-saving lamps, bulbs and tubes in the current is an alternating current. Incandescent lamp current is ac mains, 50 hz, on and off the 100 times per second. Filament is high temperature heating, heat capacity to a certain extent, to cool and hot, stroboscopic was not obvious, but low light efficiency, energy saving. Energy-saving lamps, is the mains ac rectifier dc, again for the high frequency inverter (several thousand Hz) communication, energy saving, stroboscopic is not obvious, not like a normal fluorescent lamp. LED desk lamp, the energy conservation, but see, on the market at present basically is a built-in battery, use mains charging can't use the lamp, can light up from the mains before, often charging more than 6 hours, often should charge, so if used in a short time is can, such as to use for light continuously over a long period of time, is not convenient. LED flashlight, with short time, it is very good. Leds are English light emitting diode (LED), its basic structure is an electroluminescent semiconductor chip, silver white glue or adhesive curing to the bracket, and then use silver or gold wire connection chip and circuit board, and then sealed with epoxy resin around, protect the internal core, final installation of the shell, so the LED of the seismic performance is good. Using field involving mobile phone, desk lamp, household appliances and other daily household appliances and machinery production. DC (Direct Current, DC), also known as the "constant Current power", a constant Current is a kind of Direct Current (DC), is the Direct Current (DC) are the same size and direction, it is discovered by Thomas Edison. In 1747, the United States put forward the law of conservation of charge, according to the experiment of franklin and defines the term of positive and negative charges.

Charging forgot to turn off the switch, directly inserted, and then not bright,, but the charge will bright lights.. Bulb burned out or what? Can you take?

You said you are a lantern fair due to the charging forgot to turn off the switch, could be greatly batteries have gone bad, try to change the battery.

The LED lamp male female connector can be removed?

After connection, after the completion of inspection, no problem, need to bare wires with insulating tape or other should be closed, don't put the power supply wire and bare

LED small desk lamp, found that the charging indicator light is not bright, or bad?

Since it is new, then to find businesses, can ask how to use correctly.

General how long LED desk lamp charging full of learning

Depending on the quality of the products performance difference is very big in general is roughly in 3 ~ 5 hours, and the influence on charging the battery life is over charge and discharge, so it is best not to wait until there was no electricity charge when using don't charging time is too long, in use roughly estimate the time almost no electrical charge

The LED lamp electrostatic test pass the corrective actions

I think the performance of the part and voltage adapter module components

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

Plug-in socket 12 led small desk lamp What is its battery model, the input and output voltage of each?

4.5 V to 6 V dc power supply, 12 leds is divided into three groups, each group of four, in parallel, each group of string a 60 euro / 1 w resistor. Can't see the battery is to say, inside the battery is filled of sulfuric acid, general 6 v or 12 v battery will be marked above well. General is 220 v