About: http://webisa.webdatacommons.org/203721846

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	The AC signal develops a potential across a choke and a power supply creates DC voltage to power a connected controllable valve, sensor, or other device.
http://www.w3.org/ns/prov#wasQuotedFrom	google.de