Digital auto balance bridge
US7616008B1 · kind B1 · utility
5Cited by
1References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 4, 2007 |
| Grant date | Nov 10, 2009 |
| Priority date | — |
| Expiry date | Oct 27, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R27/02
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An AC impedance measurement system is used for measuring the impedance of a DUT. A measured voltage is applied to a first DUT terminal by a first digital to analog converter, the voltage appearing at the second terminal of the DUT is monitored through an analog to digital converter and forced by a second digital to analog converter to a desired negligible value, and a digital controller determines the impedance of the DUT from the measured voltage and the current necessary to force the voltage appearing at the second terminal to the desired negligible value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.