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Circuit Check is an American company with about 225 employees and seven direct operations in six countries (the U.S., Canada, Mexico, United Kingdom, China, and Malaysia). Headquartered in Maple Grove, Minnesota, it is one of the largest manufacturers of electronic and mechanical test fixtures in North America,〔''Circuit Check Completes Expansion and Renovations'', PCB007, Jan 8, 2010.〕 . The company also manufactures Automatic Test Equipment for end-of-line manufacturing test. The company uses either a Microsoft Excel-driven "CCITest" software platform, or the National Instruments LabVIEW software platform. == History == Circuit Check was founded in 1978 as a spin-out of a printed circuit board drilling service bureau, "CircuitDrill." The initial product was test fixtures for bed of nails testers. Over the following years, the company developed innovations for in-circuit test and functional test or FCT. One, the pneumatically-actuated "clamshell" test fixture, electrically probes a circuit board from both sides. The company also combined in-circuit test with functional test in the same test fixture in 2004, by developing (and patenting) the two-stage fixture having pins of two different lengths, and compressing to two different heights.〔U.S. Patent 7,200,509〕 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「Circuit Check」の詳細全文を読む スポンサード リンク
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