UPS = Uninterruptible Power Supply
power supply is a device that supplies electric power to electrical load
all about regulated power supply
Advantage of regulated power supply.
any power supply with at least 175 watts
Asymmetrical
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.
If you mean horizontally asymmetrical there are 15: BCDEFGJKLNPQRSZ If you mean vertically asymmetrical there are 17: AFGJLMNPQRSTUVWYZ
power supply is a device that supplies electric power to electrical load
DC Power is Direct Current Power Supply.