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Definition of "CUG" |
Closed User Groups, / Closed User Groups are groups of GSM mobile telephone subscribers who can only make calls and receive calls from members within the group. This service is NOT applicable to Short messaging service. A subscriber may: Be a member of more than one but not more than ten Closed User Groups. / Insulated-gate bipolar transistor is a three-terminal power semiconductor device primarily used as an electronic switch and in newer devices is noted for combining high efficiency and fast switching. It switches electric power in many modern appliances: variable-frequency drives, electric cars, trains, variable speed refrigerators, air-conditioners and even stereo systems with switching amplifiers. |
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