Electrostatic protection circuit, circuit board, and electrostatic protecting method
US11057988B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Mar 26, 2018 |
| Grant date | Jul 6, 2021 |
| Priority date | — |
| Expiry date | Apr 7, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2202/22
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present disclosure provides an electrostatic protection circuit, a circuit board, and an electrostatic protecting method. The electrostatic protection circuit includes a first relay and a second relay, wherein a control terminal of the first relay and a control terminal of the second relay are configured to be connected to a power supply of a system circuit respectively, and wherein the first relay and the second relay are connected in series between the system circuit and a ground terminal to form a charge release path, and the first relay is switched from an open circuit state to a short circuit state when the system circuit is powered off, and the charge release path is in a turn-on state after the first relay is switched to the short circuit state, thereby releasing an electrostatic charge in the system circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.