About: http://webisa.webdatacommons.org/66473965

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	Summer amplifiers 7118 and 7119 can be implemented using known op amp summer circuits, and can be designed to have a specified gain or attenuation, including unity gain, although the invention is not limited to this example.
http://www.w3.org/ns/prov#wasQuotedFrom	google.co.uk