Differential current source with active common mode reduction
US6501255B2 · kind B2 · utility
13Cited by
4References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 4, 2001 |
| Grant date | Dec 31, 2002 |
| Priority date | — |
| Expiry date | Oct 4, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/45441
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A voltage-controlled current source provides operation as either a differential current source for a floating load, or operation as a grounded current source when one end of the load is grounded. Switching between operation as a differential current source and operation as a grounded current source is automatic, and will accommodate significant lead resistance between the source and the load. Additionally, in absence of a grounded load the circuit can provide active common mode reduction using active feedback to reduce common mode voltage on the load.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.