Radio frequency distribution network standby power system with overvoltage protection
US4016458A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 28, 1976 |
| Grant date | Apr 5, 1977 |
| Priority date | — |
| Expiry date | Jan 28, 1996 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H3/06
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An improved overvoltage protection circuit for cascaded radio frequency signal distributing amplifiers interrupts a power transmission path in an open circuit mode responsive to an overrange input power potential, and is automatically reset to its quiescent operative condition when the overvoltage condition abates. AC energy is coupled by the instant arrangement at a reduced level while the fault condition persists, such that the driven load is continuously energized. In accordance with one aspect of the present invention, selective relatively essential ones of the distribution amplifiers, e.g. trunk amplifiers, can be maintained operative by a DC standby power supply during an AC line power hiatus. Correspondingly, other, less important amplifiers are automatically rendered inoperative during power faults to prevent excessive drain in the DC standby source.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.