Window comparator of an A.C. voltage
US7728633B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 18, 2007 |
| Grant date | Jun 1, 2010 |
| Priority date | — |
| Expiry date | Aug 30, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/42
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A window comparator of an A.C. input voltage, including, between two terminals of application of a voltage representative of the voltage to be measured, two first transistors of a first type, each first transistor being assembled as a current mirror on the second transistor having a first conduction terminal connected to one of the application terminals, the two second transistors having a second common conduction terminal; and two third transistors of a second type assembled as a current mirror between the common conduction terminal of the second transistors and a current source, a D.C. voltage being applied on a first terminal of the current source and an output signal being provided by a second terminal of the current source.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.