Asymmetrical grid with sidebar: Our final example is a very popular asymmetrical layout which makes use of a narrow side column, or âsidebarâ. This sidebar is not used for main body copy, but instead holds related text (headings, pull quotes, notes, and so on), graphics, or simply white space.
From Wikiversity. RL Circuit refers to a circuit having combination of resistance(s) and inductor(s). They are commonly used in chokes of luminescent tubes. In an A.C. circuit, inductors helps in reducing voltage, without the loss of energy. Due to the inductive reactance, the higher the AC frequency, the greater the impeadence of the inductor. Under DC conditions, an inductor acts as a static resistance.
Sturdy Furman RL-1 rack light units mount conveniently into one 19 rack space providing light from two gooseneck lamps. A dimmer switch on the front panel allows you to easily adjust the light to exactly the amount desired. The RL-I is powered by a detachable 6-foot cord with an enclosed 12 VAC power supply inside the AC plug (wall wart).