One: Look for the brand of capacitors, among which ruby ​​is especially famous, Hengying (HY Domestic) is more common, of course, the price is a few cents more expensive than other unsuitable brand capacitors.
Two: Whether it has an IC control chip, because the IC control chip has protection functions such as short circuit, over voltage, overload, and over temperature.
As long as the drive power of these two points is in place, the quality is already very good.
The characteristics of the power consumption of the network, the requirements of the LED characteristics and related LED products, must also consider the following points when selecting the LED driver power supply :
General principle
a, according to LED current and voltage characteristics, it is desirable to use constant current drive. It avoids the change of the forward voltage of the LED and causes the current to change, while the constant current stabilizes the brightness of the LED.
b. In addition, the luminous flux of LED is inversely proportional to the temperature, so the heat dissipation of the power supply and the well-designed heat dissipation system should be minimized during use. Thereby reducing the ambient temperature at which the LED operates.
c. In order to ensure the overall life of the LED product, it is necessary to control the junction temperature of the LED within a certain range, that is, to control the working environment temperature of the LED product.
1 High reliability
LED products mainly consist of LED chips and power supplies, heat-dissipating housings, and control circuits. Among them, the quality of LED power directly affects the quality of the product. In particular, LED street light products, because they are installed at high altitude, are inconvenient to maintain, and the maintenance cost is also large.
2 high efficiency
LED is an energy-saving product, and the driving power supply must also meet the requirements of energy saving. In particular, the structure in which the power supply is installed in the luminaire is particularly important. Because the luminous efficiency of the LED decreases as the temperature of the LED increases. The power supply has high efficiency, its power consumption is small, and the heat generated in the lamp is small, which reduces the temperature rise of the lamp. It is beneficial to delay the light decay of LEDs.
3 Constant current drive mode In order to match the volt-ampere characteristics of the LED, the LED power supply must use a constant current drive.
4 Surge protection
LED anti-impact ability is relatively poor, so it is necessary to strengthen this aspect of protection. Especially for some products that are installed outdoors, the start and stop of the grid load and lightning strikes will have an impact on the power supply. Therefore, the input end of the LED driving power supply should have a protection circuit for suppressing the surge, so as to avoid the switch instantly damaging the LED.
5 Temperature protection
In addition to the conventional protection function, the power supply preferably increases the LED chip temperature negative feedback in the constant current output to prevent the LED chip PN junction temperature from being too high.
When you purchase, you should pay attention to these corresponding details, or else the money will be spent at the end, and the things you buy are not self-satisfied. Guangdong's drive power manufacturers, I dare not say that we are the most powerful, but I promise that we will always be the most careful.
Anti-Scald Electric Kettle
Help you to boiled water in 5 minutes. 201stainless steel Electric Kettle which have passed food grand with a sleek and anti-Scald design and will compliment your kitchen counter-top to the fullest. It is equipped with a long handle that can be used by people of all hand sizes without straining your wrists anymore. Allow you to heat water faster than a microwave oven and surely safer than a stovetop kettle.
Features:
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· Fast Heating & Automatic Shut Off: Our Anti-Scald Electric Kettle kettle has an automatic shut off button, so as to keep you safe when the water is ready.
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Application:
Make your favourite coffee.
Prepare comforting hot chocolate.
Cook eggs.
Anti-Scald Electric Kettle
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Guangzhou Taipeng Electrical Appliances Technology CO., LTD. , https://www.kettles.pl