Why the led bulb is more efficient than incandescent bulbs

the led lamp is now most local are using a lamp, here small make up for why we introduce the led bulb is more efficient than incandescent bulbs? Why there are light led lights off?

why led lamp is more energy efficient than incandescent bulbs?

LED also called light-emitting diodes (leds), is a new type of semiconductor light-emitting devices, it is the center of the equipment is also a p-n junction, but the p-n junction is more special, and general diode p-n junction are different. When the p-n junction after forward current, will arouse announced photons, and then announced to light.

LED high sensitivity, small can make the LED drive current. A few days ago tried, 6. 1 ua can make blue leds show the light, LED two voltage of 2 at the moment. 4V。

incandescent lamp by hot filament light, LED light-emitting principle and has essential difference, so the light power is low, a large part of the electrical energy into heat energy consume. This point cannot compared with LED lights. Material, according to the energy consumption of the LED lights only 1/10 of incandescent lamp, energy-saving lamp of a quarter.

why there are light led lights off?

leds is small in size, small power consumption, long using life, brightness, cold light source.

small power consumption, means that the job at current is small, on the other hand, if there is a small current through the LED lamp, so it may shine.

family turn off the LED lights at night, but also, to clarify after must be current, current clarify with minor leakage! This kind of situation very little power consumption, forming this kind of situation general is to manipulate the LED switch to meet on the zero line! It is very easy to handle, find a pencil, and check the connection switch line is luminous, if the wire does not shine, then backwards, you put two wire butt!