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Buck–boost transformer
A buck–boost transformer is a type of transformer used to make adjustments to the voltage applied to alternating current equipment.〔(【引用サイトリンク】url=http://www.hammondpowersolutions.com/upload_files/htp-12_sec2.pdf#page=95 )〕 Buck–boost connections are used in several places such as uninterruptible power supply (UPS) units for computers, and in the tanning bed industry.
Buck–boost transformers can be used to power low voltage circuits including control, lighting circuits, or applications that require 12, 16, 24, 32 or 48 volts, consistent with the design's secondaries. The transformer is connected as an isolating transformer and the nameplate kVA rating is the transformer’s capacity.〔(【引用サイトリンク】url=http://www.hammondpowersolutions.com/upload_files/htp-12_sec2.pdf#page=95 )〕
==Application==
''Buck-boost transformers'' may be used for electrical equipment where the amount of buck or boost is fixed. For example, a fixed boost would be used when connecting equipment rated for 230 V AC to a 208 V power source.
Units are rated in volt-amperes (most commonly, kilo-volt amperes KVA) (or more rarely, amperes) and are rated for a percent of voltage drop or rise. For example, a buck–boost transformer rated at 10% boost will raise a supplied voltage of 208 V AC to 229 V AC. A rating of 10% buck will yield the result of 209 V AC if the actual incoming supplied voltage is 230 V AC.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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