Patent ID: 7960870

Claim:
An apparatus comprising: a first node to connect to a power source; a second node to connect to a variable load; and a power extractor to transfer power from the first node to the second node, wherein the power extractor includes detection circuitry to detect power changes at the first node, and wherein the power extractor is to be operated such that impedances of the power extractor are dynamically changed both in response to the detected power changes at the source and a capacity of the load to receive power generated by the power source, an output impedance of the power extractor as seen from the second node to be dynamically changed when the load cannot receive all power generated by the power source, to approach matching a first impedance as seen looking into the power extractor from the second node, the first impedance including an impedance of the power extractor and the power source coupled to the first node; an input impedance of the power extractor as seen from the first node to be dynamically changed when the load can receive more power than generated by the power source, to approach matching a second impedance as seen looking into the power extractor from the first node, the second impedance including an impedance of the power extractor and the load coupled to the second node; and both output and input impedances to be dynamically changed when the load can receive all power generated by the power source.