Detection circuit and a method for detecting a wrong supply voltage
US8736248B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 30, 2008 |
| Grant date | May 27, 2014 |
| Priority date | — |
| Expiry date | Apr 7, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B6/04
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention relates to a detection circuit for detecting that a power supply unit is connected to a wrong supply voltage. Said detection circuit comprises a first voltage divider (24, 26, 28) connected to the output terminals (20, 50) of a rectifier (16) of the power supply unit, a second voltage divider (26, 32) connected to a first power input terminal (10) of the power supply unit and to one of the output terminals (20, 50) of the rectifier (16), and a circuit breaker (14) connected to the first power input terminal (10) of the power supply unit and to an input terminal of the rectifier (16), wherein at least one partial voltage of each voltage divider (24, 26, 28; 26, 32) is used a signal (22, 46) for identifying the wrong supply voltage. The invention relates further to a method for detecting that a power supply unit is connected to a wrong supply voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.