Programmable power supply system and methods
US5567993A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 23, 1994 |
| Grant date | Oct 22, 1996 |
| Priority date | — |
| Expiry date | Jun 23, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J9/061
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A programmable power controller for controlling power between a primary power source and a second power source and powering first circuitry, each of which has a voltage, comprises a control register having a first field, which is used to activate circuitry used to direct power from the primary power source to the second power source, and circuitry to compare the first voltage and the second voltage to determine which is greater and then coupling the primary power source or the second power source depending upon which is greater to power the first circuitry. The control register also has a second field used to select an electrical path having a first voltage drop that ensures the primary power source will have a higher voltage when the primary power source is active under normal operating conditions and a third field used to select an electrical path of a plurality of electrical paths, each electrical path having a variety of voltage drops and resistances. The second power source is preferably chargeable, such as a capacitor or a rechargeable battery.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.