Maintaining a reference voltage constant against load variations
US7573414B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 6, 2007 |
| Grant date | Aug 11, 2009 |
| Priority date | — |
| Expiry date | Dec 6, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F1/10
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A voltage source providing a constant reference voltage, independent of load variations at an output terminal. The effective impedance (looking-in impedance) at the output terminal is designed to be independent of frequency of the signals at the output terminal. In an embodiment, the resistance of one of two parallel impedance paths constituting the effective impedance is made equal to the resistance of the other path, and the time constants of both paths are made equal. As a result, the effective impedance is made independent of frequency, and the strength of the reference voltage is maintained constant without exhibiting ringing, DC droop, etc., despite load variations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.