January 16, 2021

[Brand Power·Mingwei Electronics] Push non-isolated LED driver solution

In recent years, domestic companies have reached a level of enthusiasm for the investment in filament lamps, but from the current market acceptance, the promotion is not very optimistic. In addition to the high price and unstable safety performance, it is not easy to pass the safety regulations and become an important factor restricting the scale of promotion.

The filament lamp has a safety regulation, which depends largely on whether the design of the power supply is reasonable. In addition, from the perspective of the quality of the lighting, the quality of the driving power directly affects the quality of the filament lamp. Therefore, LED filament lamp power supply design and manufacturing technology has become one of the most critical technologies for LED filament lamps.

"At present, LED filament lamp products are mainly concentrated in 1.8-2.4W C35 candle bulbs, and 3.6-10W A60 bulbs. The space for these two types of bulbs can be used to install power is very small." Ming Microelectronics Market Director Zhao Chunbo said in the tour speech of Gaogong LED Foshan Station that if you choose to use a more powerful driver chip for integrated design, it would be more advantageous to use a smaller, non-isolated power supply.


Ming Chun Electronics Marketing Director Zhao Chunbo


Zhao Chunbo pointed out that the SM7313P is a high-precision and high-efficiency non-isolated LED constant current drive control chip. The chip adopts the BUCK circuit structure and works in a fixed frequency mode. It only needs to use a relatively small chip inductor to achieve 5W or less. The output of the small current high voltage scheme.

"The power board of this solution has a diameter of 15.4mm and a height of 14mm. It can be directly placed in the E14 base. No white plastic kit is needed. When the 30V/20mA filament 2 string 1 is selected, it can support the input range of 100Vac ~ 265Vac." Zhao Chunbo said The SM7313P also features LED output open-circuit protection.

An automatic Hand Dryer is a sanitary ware appliance for drying or drying hands in the bathroom. It is divided into an induction type automatic hand dryer and a manual hand dryer. The working principle of the hand dryer is generally that the sensor detects a signal (hand). This signal is controlled to turn on the heating circuit relay and the blowing circuit relay to start heating and blowing. When the signal detected by the sensor disappears, the contact is released, the heating circuit and the blowing circuit relay are disconnected, and the heating and blowing are stopped.

It overcomes the shortcomings of the Wall Mounted Hand Dryer that the air can not be discharged in multiple directions and the skin temperature of the hands is too high. It aims to provide a hand dryer that circulates the air in multiple directions. An air guiding device, the air guiding device is provided with air guiding blades, and the rotation of the air guiding device or the swinging of the air guiding blades causes the High Speed Hand Dryer to circulate and not direct the wind.

Automatic hand dryers are advanced and ideal sanitary cleaning appliances and equipment. It is mainly used in hotels, restaurants, scientific research institutions, hospitals, public entertainment venues and the toilets of each family. After washing your hands, put your hands under the air outlet of the automatic hand dryer, the automatic hand dryer will automatically send out comfortable warm air, and quickly make your hands wet and dry, and when you leave the air outlet of the automatic hand dryer When it automatically shuts down the wind again. It can meet the requirements of not drying hands with towels and preventing cross infection of diseases.

hand dryer

Hand Dryer

Quiet Hand Dryers,Touchless Hand Dryer,High Speed Hand Dryer,Wall Mounted Hand Dryer

Taishan Jie Da Electrical Co., Ltd , https://www.ts-jieda.com