Switch for preventing inrush current shock and cutting off standby power
US9240290B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Jul 28, 2011 |
| Grant date | Jan 19, 2016 |
| Priority date | — |
| Expiry date | Dec 11, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H13/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention is provided with a delay unit for applying a function of a double-pole contact switch and a control function of an activation switch, so as for the contact switch and the activation switch not to operate simultaneously when turned on. Accordingly, when a predetermined time elapses after the double-pole contact switch operates first to prevent an inrush current shock, the activation switch generates a control signal to safely operate an internal circuit such as a central processing device or a control device, so that an electronic product is turned on without an electrical shock or a significant spark. Moreover, if power is cut off by software or the internal circuit is turned off in response to a control signal of the activation switch after an ON button of the electronic product is pressed, the double-pole contact switch is automatically turned off immediately or over a time interval, so that standby power is cut off completely, safely, conveniently, and effectively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.