About: variable speed drive

Premodifier: variable speed
Head noun: drive

Same concepts
http://dbpedia.org/resource/Adjustable-speed_drive

Broader concepts

label	provenance	confidence
power electronics	isap:206418450	0.720498
non-linear load	isap:197124790	0.677586
component	isap:340028513	0.560462
device	isap:156236044	0.502844

Narrower concepts

label	provenance	confidence