About: http://webisa.webdatacommons.org/305713344

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 system of FIG. 6 is identical to that of FIG. 1 except for the buffer amplifier 62, sample and hold circuits 64 and 66 and difference amplifier 68.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com