Understanding Basic Computer Monitor Power Supply Terms
Every computer user needs to use the right tools, but sometimes you can find multiple tools for the same job. So, how do you know which is the right tool for your computer? In order to select the appropriate power supply, you need to understand some basics terms.
What is a power supply?
A power supply is a hardware internal component that supplies power to your computer. It converts a 110-115 or 220-230 volt alternating current (AC) into a steady low-voltage direct current (DC) suitable for your computer use. It is rated by the number of watts it generates.
What types of power supply are available?
There are four major types of power supplies.
- Unregulated (brute force)
- Linear regulated
- Switching
- Ripple regulated - A hybrid between brute force and switching
What is a DC or AC power supply?
Is the kind of power that employs a transformer to convert the input voltage to either lower or higher AC voltage. A rectifier converts the transformer output voltage to a varying DC voltage. This then passes through an electronic filter to convert it into an unregulated DC voltage.
Why use an AC adaptor?
An AC adaptor is also known as AC/DC adaptor or DC/AC converter. It is an external power supply usually enclosed in a case similar to an AC plug. You will come across other common names referring to AC adaptors such as plug-in adaptor, plug pack, adaptor block, line power adaptor, domestic mains adaptor, power brick, power adaptor, and wall wart.
What is the difference between chargers and power adaptors?
Chargers are electrical accessories that convert AC power to a low voltage DC power. They are widely used in a variety of appliances such as mobile phones and cameras.
Adaptors, on the other hand, are used for battery-powered equipment. You can also describe them as rechargers or battery chargers. You use AC adaptors with electrical devices that require power but do not contain internal components to derive the required power and voltage from the main power.
How do you choose a computer monitor power supply?
Consider the following guidelines when choosing a power supply appropriate for your computer.
- Ensure your computer powers supply fits the case.
- Buy from a brand you trust and that has good reviews.
- Buy one with sufficient power supply capacity, the more the better.
- Ensure your new power supply is set to the correct input voltage. Some supplies detect input voltage and adjust themselves automatically. However, you have to adjust some manually.
What are some of the precautions you need to take?
The following factors will cause damage
- Reverse polarity and higher voltage adaptor than the device rating will cause damage to your device.
- Reverse polarity and lower current adapter than the device rating will cause damage to your adaptor.
- Lower voltage adaptor or higher current adapter than the device rating will not cause damage to your device but will make it not function properly.