Posts Tagged ‘Apple laptop battery’

How to fix the logical bad sectors

The logic of how to fix hard disk bad sectors?

Logical bad sectors can be said is a soft bad sectors, the disk using the Windows tool can easily be repaired. Specific method is: Go to “My Computer” window, right-click the disk partition bad sectors appear the icon, click the “Properties” menu item, open the disk drive’s “Properties” dialog box, switch to the “Tools” tab , click the “troubleshooting” combo box “Start Error-checking” button that appears “Error-checking disk” dialog box, select “Scan for and attempt recovery of bad sectors” check box, then click “OK” button can. Under Error-checking process 02) How Read More…

Hard disk

01) defragmenting the hard disk “failure”

Recently the use of Windows native defrag functions encounter a strange question, select the. Set by “analysis” button, it says “need to Defrag the hard disk” and then click the “order”, too – after the prompt “order complete”, but distribution of data on the hard disk does not happen any | any change (still very messy ), I cup defrag simply no doubt play a role, how is this going on, hard drive broken? Are there any other way to solve Read More…

antennas and antenna arrays- radio propagation

Currently, countries in the world to promote the third generation mobile communication systems, while industrial, research focus has gradually Beyond 3G third generation of people after the> or the new generation of 4G mobile communication technology, wireless broadband communications technology, the research group aims to make wireless communications spectrum efficiency, capacity and rate of ten times or even a hundred times, which means that from now MBPS increased to the order of Gbps, which requires looking at the concepts and technology Read More…

Motherboard: Members of the platform

You must often hear people say: this computer unstable, often crashes! Stability and instability of a computer, motherboard significant, this and a person’s body is not good, the cold is often the same reason. When you open the shell of the host computer, you will see a board studded with a variety of small circuit board, this piece of board is the motherboard. It is not only responsible for all data communication within the computer, Read More…

The ultimate goal of battery design

Battery designed to meet the power requirements of appliances carried out. On the one hand to meet the electrical apparatus to provide the best performance of the power supply, the other for the battery manufacturers to create the maximum profit. This requires that the battery design products with the lowest Read More…

Secondary battery charging power when the (current) efficiency of a charge efficiency

Faraday’s law is the law of one of the important electrochemical science. Theory suggests the electrolysis of electricity through the electrode and the quality of the relationship between the reactants, and temperature, voltage, electrolyte concentration and solvent nature, independent of such factors as electrode materials. But Read More…

homojunction solar cell

1, according to the different structure can be divided into the following categories.

(1) homojunction solar cell from the same material composition of one or more semiconductor pn junction solar cell. Such as silicon solar cells, GaAs solar cell and so on. Read More…

Molten salt electrolyte chemical cells

Discussed above, the molten salt electrolyte concentration cell and the molten salt electrolyte Jacobi – Daniel batteries. As you know, concentration cell of electromotive force depends on the solution of two electrodes inserted and two solution interface on the concentration of the electric potential jump, the lower the value of its Read More…

The development of lithium thermal batteries

Lithium thermal battery 70 from the late 20th century, has been developed for more than 20 years, during which tackled many technical difficulties, has become mature. Since the thermal battery with outstanding quality performance, and soon formed a variety of products, get in the successful application of modern Read More…

The definition and composition of the thermal battery

Definition

Thermal battery is the battery itself, the heating system to a non-conducting solid state heating molten salt electrolyte showed ionic conductor and into the working state of a thermally activated reserve battery. Use of solid salt electrolyte thermal battery is the main feature, it apparently different from the use of aqueous electrolytes, organic electrolytes and solid electrolyte batteries. As the use of solid electrolyte salts, Read More…