12 V Fuentes de alimentación del monitor de la computadora para Dell

What You Should Know When Choosing Computer Monitor Power Supplies

The most vital component in any computer to operate is the power supply. Without a power supply, your computer is just a box full of metal and plastics. The power supply converts alternating current (AC) from your sockets to the direct current (DC) your computer needs.

The power supply is found in a corner case of your computer. It is visible from the back as it contains the power-code receptacle and the cooling fan connected to the motherboard.

What are some of the common problems with power supplies?

You may experience some problems with the incoming power supply to your computer. Such problems cause current and voltage instability, which will have a significant impact on your computer operation. Voltage stability is the ability of the power system to maintain a steady flow of voltage levels after any disturbance. Here are the three forms of voltage instability.

  • Sustained under/over voltage - Undervoltage is a sag on voltage usually for a short period in the system voltage level. Common causes are long-term system faults or start-up of large loads. Overvoltage is a swell in the voltage levels that may occur after a short or sustained period. Common causes of overvoltage are sudden or persistent load adjustment not compensated for or phase fault events.
  • Transient events – It is a sharp change in current or voltage from normal operating levels for a short period. It is usually no more than 1 ms. A common cause is a change in the circuit conditions either internally or externally to the circuit. Examples of events which cause transient include lightning, electronic discharge, circuit faults, and so on.
  • Waveform distortion - It involves changing fundamental supply AC waveform due to influences such as harmonics, DC offsets, and noise.

What do power supplies consist of?

Power supply unit (PSU) converts the main AC to low-voltage regulated DC for internal components of your desktop or Dell laptop.

What are drawbacks of an unregulated power supply?

Changes in the main voltage and load current have adverse effects on its output voltage. The DC terminals input voltage decrease as the load draws more current.

What are important things you need to consider when choosing a power supply?

The PSU is the most integral component of your computer yet one of the most overlooked. PSU is the heart of your computer and gives energy to every element. So there are essential things you need to know to avoid negative consequences. Here are the main aspects:

  • Wattage - The first and critical thing to do is to calculate the watt power supply you need. Then account for total watt plus 20 percent buffer for safety and future-proofing. Calculating wattage allows you to dodge the cost of a new PSU if in future you decide to install SLI or Crossfire GPUs.
  • Price - Determine your budget. A good cost per performance ratio is to set aside 10-15 percent of the total system build. For example, if your build cost is $1000, then your PSU budget should be $100-$150. However, the price can fluctuate depending on efficiency, features, and modularity.
  • Rating - After you figure out your budget and power consumption needs, you also need to consider long-term energy savings. You can get efficiency standards from the 80PLUS Organization. The certification standards guarantee efficiency, accurate wattages, and active PFC.
  • Modularity - Modularity is often overlooked. But it is straightforward to figure out the type of cabling you require from the following three options:
    • Direct cable - PSU cables are cheaper in production and design, making your PSU less expensive to consumers. However, they may not be suitable for enthusiasts who want to change their build every time.
    • Semi-modular - Offers a middle ground in pricing and a decent cable management solution.
    • Full-Modular - Installation is easy and sleek because all cables are removable. Full-modular PSU makes cable management extraordinarily easy to change a plug frequently even if it is your first build.
  • Looks - Enthusiasts may at last look at PSU visual design and choose one that matches their color theme. Your choice depends on individual taste on how you want the system to look to you.

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