Note: Although advertised as universal, one still needs to check if the power supply is compatible with the laptops one owns or intends to buy. Some laptop manufacturers use proprietary plugs, for instance, and the universal power supply might not fit. The rule is: Universal power supplies will fit most laptops, but not all. Knowing that, one can easily order one online from Amazon, eBay or Tiger Direct.
UPS = Uninterruptible Power Supply
power supply is a device that supplies electric power to electrical load
Advantage of regulated power supply.
all about regulated power supply
any power supply with at least 175 watts
variable dc supply are used to get desired amount of dc supply
If it is a computer power supply it is the box that gives the computer its power from the outlet.
Power amplifierPower supply regulatorSwitching power supply chopperetc.
To keep the power supply cool. If there were no fan the power supply would overheat and fail.
DC Power is Direct Current Power Supply.
power supply is a device that supplies electric power to electrical load