Power means power by default in the computer. Press the Power button on the computer to shut down the computer. The power supply provides the electrical energy needed by all components in the computer. The size of the power supply and whether the current and voltage are stable will directly affect the working performance and service life of the computer.
The operating environment of this tutorial: Windows 7 system, Dell G3 computer.
Power means power by default in the computer. Press the Power button on the computer to shut down the computer.
The power supply provides the power required by all components in the computer. The size of the power supply and whether the current and voltage are stable will directly affect the working performance and service life of the computer.
The computer power supply converts AC power into stable DC power such as 5V, -5V, 12V, -12V, 3.3V through a switching power supply transformer to supply the system version, floppy disk, hard drive and various adapters in the host box Used by system components such as expansion cards. In layman's terms, if one power supply breaks down, another backup power supply takes its place.
Hardware availability can also be enhanced by providing battery backup for nodes and disks. HP-supported uninterruptible power supplies (UPS), such as HP PowerTrust, protect against momentary power outages. The disks should be connected to the power supply circuits in such a way that the mirror copies are connected to different power supplies. The root disk and its corresponding node should be powered by the same power circuit.
Extended information
DC power has two electrodes, positive and negative. The positive electrode has a high potential, and the negative electrode has a high potential. The potential is low. When the two electrodes are connected to the circuit, a constant potential difference can be maintained between the two ends of the circuit, thereby forming a current from the positive electrode to the negative electrode in the external circuit.
AC power supply can provide a power supply with stable voltage and frequency, which is called AC stable power supply. At present, the work done by most domestic manufacturers is to stabilize AC voltage. For this type of parameter-adjusted (resonance) voltage stabilized power supply, the basic principle of voltage stabilization is LC series resonance. The early magnetic saturation voltage stabilizers fall into this category.
Its advantages are: simple structure, no numerous components, high reliability, wide voltage regulation range, strong anti-interference and anti-overload capabilities. The disadvantages are: high energy consumption, high noise, heavy weight and high cost.
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