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entity go
that which is perceived or known or inferred to have its own distinct existence (living or nonliving)

physical entity go
an entity that has physical existence

object, physical object go
a tangible and visible entity

whole, unit go
an assemblage of parts that is regarded as a single entity

artifact, artefact go
a man-made object taken as a whole

instrumentation, instrumentality go
an artifact (or system of artifacts) that is instrumental in accomplishing some end

device go
an instrumentality invented for a particular purpose

electrical device go
a device that produces or is powered by electricity

transformer
an electrical device by which alternating current of one voltage is changed to another voltage

noun.artifact

5 Subcategories

coil go
a transformer that supplies high voltage to spark plugs in a gasoline engine
step-down transformer go
a transformer that reduces voltage
step-up transformer go
a transformer that increases voltage
Tesla coil go
a step-up transformer with an air core
voltage regulator go
a transformer whose voltage ratio of transformation can be adjusted