How much do you know about power?

How much do you know about power?

   The power converter (AC to DC), which converts alternating current to direct current and passes through the computer, does not protect the computer, but the computer has a storage memory (also called charger) for the power supply, so it can protect the computer in the event of a power failure. Switching power supply and adapter are switching power supply, are composed of high frequency switch tube and its control circuit. Adapter power supply is a kind of voltage regulator switching power supply, switching power charger is with a floating charging function, the voltage is smaller and larger with the current, to the end is only the voltage and no current. There are a few things you should note on the label of the power adapter. The first is the model of Adapter, which tells us several information, that is, its manufacturer, wattage and so on. The second is the INPUT of the adapter. In China, it is generally 100-240V~50-60Hz, which indicates that the adapter can work normally under the voltage of 100V-240V. The third is the OUTPUT of the Adapter. Two numbers can quickly calculate the wattage of the Adapter. Most laptop power adapters can be used for 100 to 240V alternating current (50/60Hz). Basically most laptop computers have an external power supply, connected to the mainframe by a Power Cord, which reduces the size and weight of the mainframe. Only a few models have the power supply built into the mainframe.