Power switching apparatus
US10020133B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 29, 2016 |
| Grant date | Jul 10, 2018 |
| Priority date | — |
| Expiry date | Oct 19, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2300/018
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A power switching apparatus includes a detection circuit, a control circuit and an auxiliary power circuit. The detection circuit comprises a voltage adjusting unit, a delay unit, a first switch unit and an isolation unit. The auxiliary power circuit comprises an auxiliary power input side and an output side. When a main power supplies power normally or the main power stops supplying power but the delay unit continues working in a setting time, the first switch unit is turned on. The isolation unit sends a first signal to the control circuit. The auxiliary power input side does not conduct to the output side. When the main power stops supplying power and the delay unit stops working, the first switch unit is turned off. The isolation unit does not send the first signal to the control circuit. The auxiliary power input side conducts to the output side.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.