Maintenance of Huangshi power board

1. mining is definitely the first professional mining machine. Many new children's shoes will choose to use the graphics card to mine, but the graphics card mining is just like doing a professional job with the "magic oil", but the efficiency is certainly not high. To dig bitcoin, we should pay attention to the following points: first, computing power (i.e. mining speed), second, power consumption, and third, stable performance. Computing power, bitcoin mining is faster than problem-solving speed, so it is self-evident that speed is more important; Power consumption is directly related to efficiency, that is, the issue of cost expenditure; The stability of performance mainly depends on the stability of calculation force when the working frequency is constant. Just think about it, no one wants the miner to lose its computing power every so often, or even break down. After all, it's all money ~
the general computing power of the graphics card is a few gigabytes, while the professional miner chip is as high as several thousand gigabytes. Take bm1387, the chip with the lowest power consumption in the world, as an example, the S9's computing power is as high as 14T, the power consumption on the wall is only 1400W, and the rated computing power reaches 13.5 Th / s ± 1 J / GH + 12% (wall, AC / DC 93% efficiency, 25 ° Rated voltage: 11.6 ~ 13.0v, in addition, in the case of non independent power supply, three power calculation boards can be connected to different power supply respectively, but each power calculation board can not be connected to multiple power supply, and ensure that the power calculation board is finally powered on
among the mining machines, ant mining machine is my favorite. At the same time, based on the average investment cost of bitcoin in the early stage, ant S9 can basically recover the capital in about five months, and the income in the later stage is immeasurable.

2. This is a virtual currency exchange. The reason why it is a mineral currency exchange is that some people compare the proction of virtual currency to mining, so it is a mineral currency exchange

3. Let's invite professional personnel. If you break it, you have to repair it

4. Brief introction: suanlibao is a bitcoin cloud computing power mining platform, with cloud computing power leasing as its main business, connecting and integrating resources such as Gaosheng holding, the main board listed company of IDC service provider, Jianan Yun, the top chip R & D and computing equipment provider of blockchain, okcoin, the world's largest bitcoin exchange and money package service provider, and kuanchi, Users can realize remote mining through the network, experience science and technology finance, and enjoy bitcoin income generated by computing power at the same time
legal representative: Zhang Suli
time of establishment: November 12, 2015
registered capital: RMB 10 million
Business Registration No.: 330104000313768
enterprise type: limited liability company (invested or controlled by natural person)
address: room 407, 4th floor, building 4, No. 9, Jiuhuan Road, Jianggan District, Hangzhou City

5. There are many reasons for the low computing power of S7 bitcoin
1. It may be the problem of temperature. Low or high temperature will affect the calculation power of the miner
2. There are problems in the miner itself, which lead to abnormal calculation force
3. The aging of mining machine leads to the decrease of calculation power, and the calculation power of second-hand mining machine is relatively the first
bitcoin, Leyte coin, sand coin and all the mining machines that need mining are like this.

6. Yinbit is recommended. Yinbit is a maintenance brand of coin printing. It is an official quality maintenance brand established by an old maintenance team. It has five years of ant mining machine maintenance experience and has excellent strength. It can realize the quick repair of ant 17 series and apw9 / apw9 + power supply. It is one of the few maintenance brands in the instry that can quickly repair high computing power models. At the same time, it undertakes the business of rescuing S17 and T17 scrapped computing power boards, At present, there are maintenance sites in Cheng, Sichuan, Dehong, Yunnan and Xinjiang
at the same time, Shenma M20 / M21 series and p21 power supply quick repair can also realize quick repair with quality assurance because they are authorized maintenance brands of Shenma and Xindong.

7. 18 minutes
2 km, direct, walk 250 meters

Longcheng square subway station
1 walk 3 meters to Longcheng square subway station, take M303 (via 3 stations for 16 minutes)
2 get off at Chenglong garden, and walk 207 meters to Longgang central city

8.

There is no such saying, only the saying of photocell

The principle of phototube is photoelectric effect. One is the semiconctor material type of phototube, its working principle is photodiode, also known as photodiode, is the

vacuum phototube

when the pole is up, e to the external photoelectric effect (see photoelectric sensor), the photoelectron is emitted from the pole layer to the vacuum. Under the action of the electric field, the photoelectron accelerates between the electrodes and is finally received by the anode with high potential. The photocurrent can be measured in the anode circuit, and its magnitude depends on the light intensity and the sensitivity of the photocathode. According to the different shapes and settings of photocathode and anode, photocells can be generally divided into five types

(1) central cathode type: because the cathode area is very small and the luminous flux is not large, this type is only suitable for low illumination detection and measurement of photon initial velocity distribution

(2) Central anode type: e to the large area of cathode, the size of incident focus spot is not limited; Because the distance from photocathode to anode is the same, the electron transit time is consistent; The disadvantage of this method is that it needs higher anode voltage because of its poor photoelectron receiving characteristics

(3) semicircular cylindrical cathode: this structure is beneficial to increase the insulation performance between electrodes and rece the leakage current

(4) parallel plate electrode type: this type is characterized by the fact that photoelectrons fly from the cathode to the anode in a parallel straight line, and the electrode has good consistency for light incidence. ⑤ Flat plate cathode with cylinder: it is characterized by compact structure, small volume and stable operation

I hope I can help you solve your doubts

9. The radial force is generated by the magnetic pole attraction of the motor winding on the spindle core of the motor