Voltage island fencing
US6720673B2 · kind B2 · utility
15Cited by
4References
41Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 11, 2001 |
| Grant date | Apr 13, 2004 |
| Priority date | — |
| Expiry date | May 6, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J3/388
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A circuit for fencing input signals to circuits in a voltage island when switching between a normal and a standby power supply is disclosed. A voltage detector detects the switch over in power source and generates a power switch signal. The power switch signal is synchronized to a standby clock and a normal clock. The synchronized standby clock signal is delayed by a counter to allow circuit stabilization. The normal and standby clock signals are logically combined and used to fence input signals to the circuits on the voltage islands.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.