conduction headphones

external energy, the molecules in the high-energy regions are transferred to regional molecules with low energy. Therefore, it is generally believed that the transfer of energy is hot in the physics field. Of course, the most important process or form of heat transfer is hot transfer. Friends who have studied middle school physics know that there are three main hot transfer methods: Transmission:The transfer of energy is called heat conduction wh

saved after power failure is to add the floating gate and the selection grating on the original transistor. A floating shed for storing electrons is formed on a semiconductor that conducts unidirectional currents between the source and drain poles. The floating grille is encased in a layer of silicon oxide film insulator. Above it is the selection/control grille that controls conduction currents between the source and the drain poles. The data is 0 o

In the flow of the metropolis, whether in the subway, the bus or the road, you will see people are constantly staring at their hands of the phone. Playing games, reading novels, browsing the web, people now seem to be immersed in a small palm, a minute also inseparable from the hands of the smartphone. Even the most basic sense of security is not there if someone doesn't bring the phone with him. Smartphones are really amazing things, and while all machines look just as clumsy in their use, peo

In our DIY long "levy Machine" on the road, there has been the disaster of static electricity, I was deeply affected by static electricity, hard to explore, to find the way to eliminate static electricity, the following article on how I eliminate static electricity "suffering" experience, I hope to give you a little help. Remember the computer just assembled back, the use is very normal, once accidentally touched the chassis rear panel (chassis in addition to the rear panel bare, the other part

of the operation. Electrostatic damage to the device is both overt and covert. Hidden damage was not visible at the time, but the device became more vulnerable, under the conditions of overvoltage, high temperature, and very easy to damage. ESD two main destruction mechanism is: the thermal failure of the equipment caused by the ESD current, induced by the ESD high voltage caused by insulation breakdown.Two kinds of damage can occur simultaneously in one device, for example, an insulation break

Source: Power Supply NetworkKeywords: MOS Structure switch Drive Circuit When using MOS to design a switching power supply or motor drive circuit, most people will consider the mos on-resistance, maximum voltage, maximum current, and so on. Many people only consider these factors. Such a circuit may work, but it is not excellent. It is not allowed as a formal product design. The following is my summary of the basis of the mos and MOS driving circuit. I have referred to some materials, not all or

some of your own work to create something, the more powerful CPU computing performance is what you need. how much stronger is the MacBook Pro 2.7-2.9ghz CPU than the MacBook Air? 22%. It's going to be 1/4 higher. You also have a larger memory of 8GB. More memory allows you to open more programs at the same time, do more operations, the system more stable operation. Of course, when we have these, we sacrifice some weight and thickness. 　　the MacBook Pro 13-inch weight is 1.58 KG . The thickn

China's door and window industry with the rapid development of the economy and forward development. With the continuous advent of new materials, doors and windows industry will be high-end, new, multifunctional, multi-species, a variety of real energy-saving development. Windows and doors seize this historic opportunity to develop truly energy-efficient windows and doors.Correct understanding of "energy-saving windows"Energy-saving window is the development direction of our industry, how to reco

life is simple, most of the time, after work she will go out with colleagues to stroll around the street and see the film.Chen Chunhua does not care about where her headphones will be sold, she is satisfied with her current life and work status, in addition to "occasional overtime on weekends", team harmony, income stability. She is even shy to say that her dream is through hard work, can do what they want to do, can carefree take a family to travel.