With the power adapter affecting thousands of households, the whole society has a higher and higher voice for the safety of power adapter. The national requirements for the safety certification of power adapter are becoming more and more strict.
The certification of power adapter will go through some processes, mainly about sending the qualified power adapter to the relevant safety regulation department for testing, and then obtaining relevant certification. For example, the certification cycle of UL in the United States is about one week, and the EU CE certification is one week. After the power adapter is certified and has relevant certificates, it will enter the market, The sales volume is better than that of the power adapter entering the market without a license, the profit is more considerable, and the consumers are more satisfied, which will bring a win-win situation to the power adapter manufacturers, electronic products and consumers.
1. Power enterprise
To be honest, why is the market price of power adapter unstable? The main reason is that the power supply enterprises do not have enough awareness. In order to make profits, many power supply enterprises will adopt the methods of reducing costs and cutting corners. They even thought that this is the best way to occupy the power supply market and obtain market share. However, they do not know that this is actually reducing their brand image and reducing the trust of consumers, As a result, consumers who have a little ability will buy more expensive foreign brand power adapters.
Power adapter certification is the profit of power enterprises. After the power adapter is certified, consumers will have stronger trust in the brand, and their desire to buy will increase. The direct agent is the improvement of market share, which will bring continuous profits to power enterprises. For example, some power enterprises reduce costs and cut corners. It is no doubt that killing the goose lays the egg is not worth the loss.
2. Electronic products
If electronic products are equipped with a power adapter certified by safety regulations, it is undoubtedly even more powerful. With a series of reports on the power adapter on the Internet, such as fire caused by charging, electric shock accident caused by charging, etc., the safety of the power adapter has also become the primary consideration of consumers in purchasing electronic products. An electronic product is equipped with an uncertified power adapter, and an electronic product is equipped with a certified power adapter. For contemporary consumers with increasingly strong safety awareness, they will certainly choose the latter one, which virtually improves the brand influence of the electronic product itself.
3. Consumer
As a consumer, the benefits of buying a certified power adapter are too many. In the past, the concept of power supply certification was not strong. We always chose cheap power adapters. It won't take long for the power adapters to break down, and then we bought them again. In this way, the cost of cheap power adapters is enough to buy several genuine power adapters, and generally inferior chargers have to be replaced in 3 or 5 months, The safety certified power adapter can often be used for 2 or 3 years. In the long run, buying a safety certified power adapter is actually saving consumers money.
To sum up, real-time safety certification of power adapter will not cause losses to power enterprises, but will bring more benefits to power enterprises, cooperative enterprises and consumers. Therefore, whether power peers, cooperative enterprises or consumers, we must pay attention to power safety certification, Choose a wide number of such safety certified power adapter enterprises
There are several items that need attention on the label of the power adapter (hereinafter referred to as adapter).
First, the model of the adapter. For example, the model of the adapter is p120w1000u, which tells us several information, such as its manufacturer and wattage. Generally, the beginning of P is the ## company code, and 120w1000 indicates that the adapter is 12V1A;
Second, it is the input of the adapter, which is generally 100-240V ~ 50-60Hz in China, which shows that the adapter can work normally under the voltage of 100v-240v;
Third, the output of the adapter. The two numbers can quickly calculate the wattage of the adapter. For example, the voltage of the adapter is 12V * the current 1A = 12W (power), indicating that the power supply is a 12W adapter.
The power adapter of most notebook computers can be suitable for 100 ~ 240V AC (50 / 60Hz). Basically, most laptops have an external power supply and are connected to the host with a power cord, which can reduce the volume and weight of the host. Only a few models have a built-in power supply in the host.
Fourth, it is the production date of the adapter. Generally, the warranty period of the adapter is two years. As long as both manufacturers and customers pay attention to quality will require the production date, which is generally a four digit number. For example, 1817 is produced in the 17th week of the 18th year.
There is a nameplate on the power adapter, which indicates the indicators such as power, input and output voltage and current. Pay special attention to the range of input voltage. This is the so-called "travel power adapter". This feature is very useful if you go to a country where the mains voltage is only 110V. Some parallel laptops are sold only in the country of origin, Without this compatible voltage design, even a single input voltage of 110V will burn out if it is inserted under the 220V mains voltage in China.
summary
The function of power adapter is to convert high voltage into stable low voltage so that they can work normally. Without it, it will bring a lot of inconvenience to our daily use. Therefore, the adapter is often used in our daily life, which is nothing more than the visible external power supply and the invisible built-in power supply. This paper mainly introduces the function, composition and application of power adapter, as well as some problems needing attention when using power adapter.
