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In electrical engineering, power conversion is the process of converting electric energy from one form to another. A power converter is an electrical device for converting electrical energy between alternating current (AC) and direct current (DC). It can also change the voltage or frequency of the current.
Most mains-powered electrical equipment, though it may specify a single nominal voltage, actually has a range of tolerance above and below that point. Thus, devices usually can be used on either any voltage from approx. 100 to 120 V, or any voltage from approx. 210 to 240 V.
DC-to-DC converters are used in portable electronic devices such as cellular phones and laptop computers, which are supplied with power from batteries primarily. Such electronic devices often contain several sub-circuits, each with its own voltage level requirement different from that supplied by the battery or an external supply (sometimes higher or lower than the supply voltage).
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Chicago Lawyers' Committee For Civil Rights Under Law v. Craigslist, 519 F.3d 666 (7th Cir. 2008), [1] is a Seventh Circuit decision affirming a lower court ruling that Section 230 of the Communications Decency Act (CDA) provides immunity to Internet service providers that "publish" classified ads that violate the Fair Housing Act (FHA).
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An official ended up with a gash below his eye after a scuffle late in East Carolina’s Military Bowl win over NC State.. The official got hit in the face by a player’s helmet as members of ...