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ADC Telecommunications was a communications company located in Eden Prairie, Minnesota, a southwest suburb of Minneapolis. It was acquired by TE Connectivity (Tyco Electronics) in December 2010 and ceased to exist as a separate entity. It vacated its Eden Prairie location in May 2011 and moved staff and resources to other locations. ==History== In 1935, Ralph Allison founded the Audio Development Company in the basement of his south Minneapolis home, inventing ADC's first product, the audiometer, an electronic device designed to test hearing. The company was later renamed to ADC Telecommunications, Inc. Two years later, fellow engineer Walt Lehnert joined Allison, and together they diversified the company's product line to include amplifiers and transformers for the broadcast industry. By 1942, the company had designed a sophisticated audio system for the University of Minnesota, and the resulting jacks, plugs, patch cords and jackfields became the cornerstones for ADC's later entry into telecommunications. In 1949, ADC sold its audiometer product line and Ralph Allison left the company to form a new business in California. ADC diversified and focused its efforts in the area of transformers and filters for power lines, military electronics, telephone jacks and plugs. In 1961, ADC merged with Magnetic Controls Company, a manufacturer of power supplies and magnetic amplifiers with strong ties to the U.S. space program. The resulting company, ADC Magnetic Controls, had a decade of mixed success. Although transformer sales boomed during the 1960s, other new product initiatives failed to materialize. Perhaps the most significant product innovation during this period was the bantam jack, a miniaturized component that eventually became the standard for telephone circuit access and patching. Building on its growing sales of jacks and plugs in the early 1970s, ADC introduced prewired, connectorized jackfields, wired assemblies and test equipment for telephone operating companies. By 1974 the company was on solid ground, and by 1976, ADC had become the largest independent supplier of test boards in the United States. ADC grew in 1983, when AT&T was ordered to deregulate by the federal government. By establishing the seven Regional Bell Operating Company (RBOC) carriers as independent entities, the U.S. market for telecommunications expanded by 90 percent. ADC became a supplier for the RBOCs. ADC embarked on some acquisitions in the early 1990s, attempting to move "up the stack" in the datacom field by acquiring companies that manufactured datacom equipment. However, their ability to find synergies between these companies proved limited and eventually ADC was forced to move away from a hardware-only strategy, broadening out into software. This effort resulted in limited success as well, and happening about the same time as the dot-com bubble burst, caused ADC stock to plummet. Despite these ups and downs, ADC continued to survive and on July 13, 2010, the company released this announcement: "Tyco Electronics (NYSE: TEL) and ADC (Nasdaq: ADCT) announced today a definitive agreement under which Tyco Electronics will acquire ADC for $12.75 per share in cash, or an enterprise value of approximately $1.25 billion. The transaction is expected to be accretive by approximately $0.14 per share in the first full year after closing excluding acquisition-related costs. It will position Tyco Electronics' Network Solutions segment as a leading global provider of broadband connectivity products to carrier and enterprise networks around the world."〔(【引用サイトリンク】title=ADC Telecommunications, Form 8-K, Current Report, Filing Date Jul 13, 2010 )〕 The acquisition of ADC by TE Connectivity was completed on December 9, 2010 〔(【引用サイトリンク】 title=Press Release:Tyco Electronics Completes Acquisition of ADC )〕〔(【引用サイトリンク】title=ADC Telecommunications, Form 8-K, Current Report, Filing Date December 9, 2010 )〕 On January 28, 2015, it was publicly announced that the boards of directors of both TE Connectivity and CommScope agreed for CommScope to purchase the Broadband Network Solutions business unit of TE Connectivity in an all cash deal for $3.0 Billion USD. The former ADC is a part of this business unit.〔(【引用サイトリンク】 title=Commscope buys TE's broadband network unit for $3Bn )〕 The deal is expected to close by Dec. 31, 2015. 〔(【引用サイトリンク】 title=CommScope to Buy TE Connectivity Unit for $3 Billion )〕〔(【引用サイトリンク】 title=CommScope Agrees To Acquire TE Connectivity’s Telecom, Enterprise and Wireless Businesses )〕〔(【引用サイトリンク】 title=TE Connectivity Announces Definitive Agreement to Sell Its Broadband Network Solutions Business to CommScope for $3.0 Billion )〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「ADC Telecommunications」の詳細全文を読む スポンサード リンク
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