Circuit card present sense and protective power supply inhibit for airborne application of ATM switch unit
US5796185A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Oct 15, 1996 |
| Grant date | Aug 18, 1998 |
| Priority date | — |
| Expiry date | Oct 15, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S323/908
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A system on an aircraft that eliminates hot-swapping of circuit boards to prevent damage to the circuit board connector interfaces. The system supplies power to a circuit card only when there is an effective coupling between a circuit card connector and an opposite mating connector. A power control circuit responds to a card present signal which indicates when the circuit card connector is coupled to the opposite mating connector. A logic circuit converts the card present signal to a power supply enable signal. A main power supply receives the power supply enable signal and provides power to the circuit card only when the circuit card connector and the opposite mating connector are appropriately coupled.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.