Isolated voltage transducer
US9182457B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 26, 2011 |
| Grant date | Nov 10, 2015 |
| Priority date | — |
| Expiry date | Jan 22, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/091
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A transducer is disclosed for detecting the AC and DC voltage difference between two nodes in an electrical circuit and electronically transmitting the measured voltage difference to an electrical system that is electrically isolated from the common mode potential of the two nodes. The voltage drop between two points in a circuit under test is determined by detecting the current flowing through a resistive shunt coil connected in parallel to the test points. Current through the resistive shunt coil is linearly proportional to the voltage difference between the test points, and it is detected by using a magnetic sensor that is separated from the shunt coil by an insulating dielectric barrier. The transducer can be packaged in a standard integrated circuit package in order to provide a small and low cost voltage transducer for test, measurement, control, and signal-isolation applications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.