Fluorescent lamps require a ballast to stabilize the current through the lamp, and to provide the initial striking voltage required to start the arc discharge. This increases the cost of fluorescent light fixtures, though often one ballast is shared between two or more lamps.
n. a deed to real property which guarantees that the seller owns clear title which can be transferred (conveyed). A grant deed generally is a warranty deed, while a quit claim deed is not. (See: warrant, grant deed)
A warranty deed is a deed in which the grantor warrants that they have a good, clear and marketable title. You can think of this type of deed just as you would with any other product in which you get a warranty. The maker or seller of the product provides you with a warranty that their product will work.