With the promulgation of the ban, the incandescent lamp is accelerating its withdrawal from the Chinese market. Except for a few remote areas, the current mainstream of the home lighting market is still energy-saving lamps. However, as the fourth generation of green lighting, LED lighting has completely covered the energy-saving lamps, and has become the focus of current lighting. Nowadays, with the improvement of various links and the upgrading of materials, the price of LED lighting products has become more and more close to the people, and gradually began to enter the ordinary people's home from commercial lighting.
I used to hear a little story: When a person buys an LED light, the boss recommends two lights with the same luminous flux, a 6W and a 8W. The last person chose 8W and asked him why he didn't choose 6W. The last reason was that the same price, why should I choose 6W, 8W is obviously bigger than 6W! For such ridiculous things, you can't completely blame Consumers are amateurs. After all, LED lighting has only recently emerged in the past 10 years, and ordinary consumers have been exposed to LED lighting in recent years. Some manufacturers do not actively guide consumers, but in order to cater to consumers, deliberately make the product power high in the case of constant luminous flux.
At present, everyone's understanding of LED lighting products is still at the stage of incandescent lamps and energy-saving lamps, and power is determined to be everything. Then as an ordinary consumer, do not know the luminous flux, do not know the light effect, do not know the color temperature, the index and other parameters, how do we choose LED lighting products? In fact, in addition to the wattage, price we have a very The important parameters can be compared, that is the weight. The weight of a product contains a lot of performance of the product, this article will teach you how to choose a good LED lighting product from a completely layman's perspective.
Drive
There are many kinds of LED drivers. From the driving mode, the constant current and the constant voltage can be divided. From the circuit type, the switching power supply, the resistance and capacitance buck, and the IC linear constant current, wherein the switching power supply is divided into an isolated switching power supply and a non-isolated switching power supply. Resistor-capacitor buck and IC linear constant current are relatively simple driving methods of the circuit. The general circuit has only a few components, the power supply itself has many defects, and the safety hazard is large, so the power supply itself is very light. The switching power supply line is more complicated, and there are many electronic components, especially the components such as transformers and electrolytic capacitors are of high quality. Sometimes, from the consideration of the power supply and the lamp itself, the entire internal space of the power supply needs to be glued, so the quality of such products. Very heavy, relatively speaking, the power supply is less hidden and safer. So which is the low-end product which is a high-end product, let's know when you put a handful of comparisons.
2. Structure
In addition to the LED itself, the life of LED lighting products is also an important factor is heat dissipation. The product with good heat dissipation has a long service life, and the product with poor heat dissipation has a very short life, and the heat dissipation is determined by the structure. When buying LED lighting products, we can't let the sales staff light the products for a few hours to give us a sense. It is impossible to have measuring equipment at the scene. How do we roughly judge the heat dissipation capability of a product? In fact, it can be done with a hand.
At present, LED lamp housings mainly use three kinds of materials: metal, ceramic and plastic. For the heat dissipation of the lamp, the metal material is the best, the ceramic is the second, and the plastic is the worst. At present, many manufacturers use the plastic metal package to achieve the heat dissipation requirement and ensure safety. Metal, plastic or ceramic, or metal plus plastic, put a hand to judge. Therefore, if a product has good heat dissipation, we can easily judge it by hand. The heavy one is that the manufacturer is willing to put "material", and the lightness is definitely the poor heat dissipation effect.
Taking into account other factors, although the "weight" method can not be 100% to measure the quality of lighting products, but also can provide some guidance and reference for our purchase. Today's technology is changing with each passing day. Some high-end customers are not only staying in the above two aspects, but also have higher demand for lighting products, such as high index, color temperature requirements, and lighting effects. At this time, how to further judge whether a product is good or bad? Then we need the sales staff to give us a few minutes of lighting display. If we need high-index products, we can put the lights on some bright and color-changing objects. If the effect is close to the effect under the sun and there is no obvious change in the color, then the indicator is relatively high, so that the color rendering index of the product can be roughly judged; if a good light-emitting effect is required, we can put the lamp on the wall. Judging the light effect; if it is the color temperature requirement, then pick the color you like!
Edit: Bober
The FirstPower gel battery uses the sealed gel technology and is designed for high reliable, maintenance-free power for renewable energy applications. Depending on the advantage gel technology, optimum grid and plate design, the FirstPower gel battery offers highest power and reliability for your equipments.Gelled electrolyte, no flow, no leakage or no gradation of sulfuric acid.
The positive plate is tubular plate, which can effectively prevent the active materials from falling off.PVC-SiO2 separator, which is special for gel battery with tiny holes.
The separator has high volume porosity, low electrical resistance and excellent wettability
Maintenance-free during the whole service life.
Low self discharge rate
Proof against deep discharge according to DIN 43539 T5
Main Power Opzv Battery,Dischargeable Main Power Opzv Battery,Opzv Battery For Mains Power
Firstpower Tech. Co., Ltd. , https://www.firstpowersales.com