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)
Special warranty deeds are becoming more common. A general warranty deed is a promise to the buyer that the seller will warranty any prior problems with title, not just during the seller's ownership, but back along the chain of ownership.