Voltage sensing circuit
US7259614B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 22, 2005 |
| Grant date | Aug 21, 2007 |
| Priority date | — |
| Expiry date | Sep 1, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F1/46
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An auto voltage sense circuit uses voltage controlled current sources to generate a desired reference voltage level that closely tracks the variations and changes of a first voltage level and a second voltage level. The auto voltage sensing circuit includes a first voltage controlled current source operable to receive the first voltage level to generate a reference current that is proportional to the first voltage level. The auto voltage sensing circuit also includes a second voltage controlled current source operable to receive the second voltage level and the reference voltage to generate an output current that is proportional to the difference between the second voltage level and the reference voltage. The reference voltage causes the output current to be approximately equal to the reference current so as to generate a reference voltage that is proportional to the difference between the second voltage level and the first voltage level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.