Exponential current generator and method
US6882185B1 · kind B1 · utility
6Cited by
12References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 2, 1998 |
| Grant date | Apr 19, 2005 |
| Priority date | — |
| Expiry date | Jul 2, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/45658
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An apparatus and method of generating a current pair Ip, Im where the ratio of the pair is exponentially related to a control signal, and where either Ip or Im is greater than or less than a minimum or maximum value includes a feedback correction circuit used to sense the value of Im or Ip. The correction circuit supplies a boost current Iboost when the sensed value of Ip or Im is less than or greater than the minimum or maximum value. Iboost is preferably maintained proportional to the difference of the desired value and Ip or Im.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.