About: http://webisa.webdatacommons.org/143079764

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	An electronic circuit for de-energizing a lamp or other load after a predetermined period of time uses a gate controlled switch, e.g., thyristor, connected between the load and a source of A.C. voltage.
http://www.w3.org/ns/prov#wasQuotedFrom	patentgenius.com