Recently, Huaqiangbei.com has set off a wave of hair dryers. Not Dyson, but a certain Sen. What about brands? It is not something that our bitter electronic component service providers can pay attention to. so what? Today's essay. Aside from the constraints of all brands, we only disassemble this internet celebrity hair dryer from the aspects of craftsmanship and the use of electronic components.

I dismantled the same product of Mijia before and found that the PCB board design is very similar to the original Dyson. Except for the different motors, everything else is very similar. Of course, this product of Mijia has also sold more than 1,000, which is not on the same channel as our "protagonist" of today's Internet celebrity.

1. The material used for the entire PCB board is relatively realistic. At first glance, there is still a focus on craftsmanship.

Of course, after all, it is something over 200 meters. Some solutions may be relatively simple. Because the basic speed of the motor is not clearly marked on it, it is unknown. However, this is a three-phase brushless motor. In terms of feel, it is still relatively good. The overall sound of work is too loud, and Dyson's technology of outsourcing sound-absorbing cotton has not been transplanted. Of course, this motor is Dyson's housekeeping skills. If it is copied, it may be a bit unrealistic. Dyson's motor is composed of a single-phase brushless motor. The MUC of the microcontroller is PIC16F1939. The double bridge to control the motor is an Infineon chip with two half bridges. IRSM808-105MH This chip is also a popular model of Xingyu Jiake during this period. Such a chip combination, plus a patented motor, sells for a price of 2000-3000 meters, which is reasonable. After all, the development cost in the middle is a bottomless pit.

Our net red hair dryer uses a three-phase brushless motor. Directly use 6 MOS tubes as bridges. The most common 4N60 TO-252 package (Xingyujia Technology) microcontroller MCU is a 16-bit control of LKS. easier.

The circuit including the AC-DC end is also LKS620. It seems that this solution was developed by LKS. A bridge of KBP310, a thyristor of BT139-800E. Then I saw two big guys who were relatively clear. The electrolytic capacitor of Hongyuan Nachuan brand. To be able to use such a brand of capacitors, it can be regarded as a more than 200-meter Internet celebrity machine, which is quite unexpected.

In general, the various materials used in this fan are still in line with the product characteristics of the post-Huaqiangbei era. The shell material is also relatively solid. The detail processing is also in place. When dismantling the limelight, I saw a very delicate rubber ring, as well as the beginning and the handle, all of which have been systematically waterproofed. The sound-reducing glue on the motor is also very stable and noise-reducing, of course, compared with the so-called famous brands. In terms of noise, there is still a little difference. After all, cost and price are there.

In terms of appearance, the handling is really amazing, and the feel and safety performance are also taken into account. It doesn't look like a product that only needs more than 200 meters. Personally, I think it is a net red product that is worthy of this component solution and this price.