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DIA Headquarters (sometimes called the Defense Intelligence Analysis Center or DIAC) opened in 1983 [2] and became operational in 1984. [3] and designed by SmithGroupJJR to consolidate DIA activities in the Washington, D.C., area.
Three-layer DIAC. The DIAC (diode for alternating current) is a diode that conducts electrical current only after its breakover voltage, V BO, has been reached momentarily. Three, four, and five layer structures may be used. [1] Behavior is similar to the voltage breakdown of a triac without a gate terminal.
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A QUADRAC is a special type of thyristor which combines a DIAC and a TRIAC in a single package. The DIAC is the triggering device for the TRIAC. Thyristors are four-layer (PNPN) semiconductor devices that act as switches, rectifiers or voltage regulators in a variety of applications. When triggered, thyristors turn on and become low-resistance ...
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DIAC is a four-letter acronym that may stand for: DIode for Alternating Current, a bidirectional trigger diode; Department of Immigration and Citizenship, an Australian government department; Dental Industry Association of Canada; Disability Information & Advice Centre, a British charity; Design Industry Advisory Committee
PDF/UA (PDF/Universal Accessibility), [1] formally ISO 14289, is an International Organization for Standardization (ISO) standard for accessible PDF technology. A technical specification intended for developers implementing PDF writing and processing software, PDF/UA provides definitive terms and requirements for accessibility in PDF documents and applications. [2]
In atomic physics and quantum chemistry, the Aufbau principle (/ ˈ aʊ f b aʊ /, from German: Aufbauprinzip, lit. 'building-up principle'), also called the Aufbau rule, states that in the ground state of an atom or ion, electrons first fill subshells of the lowest available energy, then fill subshells of higher energy.