Methods and systems for comparing currents using current conveyor circuitry
US7535264B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 30, 2007 |
| Grant date | May 19, 2009 |
| Priority date | — |
| Expiry date | Nov 12, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/91
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Methods and systems are provided for comparing currents. The method includes driving a first current through a first X leg of a first current conveyor circuit and a second current through a second X leg of a second current conveyor circuit. The method further includes draining a third current from a first X terminal of the first current conveyor circuit to produce a first positive transistor current and a first negative transistor current, and draining a fourth current from a second X terminal of the second current conveyor circuit to produce a second positive transistor current and a second negative transistor current. The method further includes summing the first positive transistor current and the second negative transistor current to produce a first current output, the first negative transistor current and the second positive transistor current to produce a second current output, and the first current output and the second current output to produce a summed current output.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.