advantage:
1, LED ceiling light energy saving. White LED energy consumption is only 1/10 of incandescent lamps, 1/4 of energy-saving lamps.
2, LED ceiling light longevity. Life expectancy of more than 100,000 hours, for ordinary home lighting can be described as "one time and forever".
3, LED ceiling light can work in high speed state. If the energy-saving lamp starts or turns off the filament frequently, it will turn black and quickly break.
4, LED ceiling light is a solid-state package, belonging to the type of cold light source. So it is very convenient to transport and install, can be installed in any micro
Type and closed equipment, not afraid of vibration, basically do not need to consider heat dissipation
how to choose:
The choice of LED ceiling light is mainly considered from the following three aspects:
1. Look at the radiator used in the luminaire:
The speed of heat dissipation of the lamp determines the degree of light decay and the service life of the whole lamp. The lamp beads work under high temperature for a long time, the light decays quickly, the life is very short, and the ceiling lamp with too bad brightness can not achieve the effect of accent lighting.
LED ceiling lamp radiator solution, the mainstream has an integrated radiator method, a single lamp bead, a cooling column method, and an external fan cooling method.
The size of the radiator and the quality of the aluminum material affect the speed of heat dissipation and also affect the price of the whole lamp.
2. Look at the power supply of the luminaire (that is, the commonly known transformer):
The quality of the transformer also determines the life of the whole lamp. It is no problem to use the lamp for more than 50,000 hours, but if the transformer is broken, the whole lamp will not shine. The electronic components and design schemes used in the transformer determine the efficiency, power factor, stability, temperature rise and service life of the transformer.
If the user does not understand the component knowledge, it can be judged from the size and weight of the transformer and the electrolytic capacitor used by the manufacturer. The difference in the price of LED ceiling lamps, the quality of transformers accounts for a large proportion.
3. Understand the brand and packaging of the lamp bead:
The quality of the lamp bead determines the lighting effect of the LED ceiling light, and the packaging process affects the key factors such as the quality of the lamp bead and heat dissipation. Lamp beads chips include US chips, Taiwan chips, and domestic chips. Different brands have different price differences and different lighting effects.
Users can learn about the lamp bead solution by consulting the manufacturer, depending on the integrity of the manufacturer. The ceiling lamps with extremely low prices are often produced using the defective products produced by the chip production line. The color temperature is inconsistent, the brightness is poor, and the life is short. Users need to pay attention.
7 Inches Tablet PC
The 7-inch tablet can be used as the golden size of a tablet computer. It is small and portable. It can be used at home and outdoors. You can browse the web, watch videos and play games. It is a household artifact. Although the size of the 7-inch tablet is inclined to the tablet, the function is more inclined to the mobile phone, so it can also be used as a substitute for the mobile phone. Compared with other sized tablets, the 7-inch tablet has obvious advantages in appearance and weight. Both the body size and the body weight have reached a very reasonable amount.
1.In appearance, the 7 inch tablet computer looks like a large-screen mobile phone, or more like a separate LCD screen.
2.In terms of hardware configuration, the 7 inch tablet computer has all the hardware devices of a traditional computer, and has its own unique operating system, compatible with a variety of applications, and has a complete set of computer functions.
3.The 7 inch tablet computer is a miniaturized computer. Compared with traditional desktop computers, tablet computers are mobile and flexible. Compared with Laptops, tablets are smaller and more portable
4.The 7 inch tablet is a digital notebook with digital ink function. In daily use, you can use the tablet computer like an ordinary notebook, take notes anytime and anywhere, and leave your own notes in electronic texts and documents.
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