Device for eliminating low frequency radiation of monitor
US5814941A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 19, 1997 |
| Grant date | Sep 29, 1998 |
| Priority date | — |
| Expiry date | Feb 19, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J29/003
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A device for eliminating low frequency radiation of a computer monitor is disclosed, including a pair of first conductive plates disposed on two opposite sides of a cathode ray tube of the monitor to generate a radiation signal thereon that is induced by the low frequency radiation of the monitor, the radiation signal being applied to a circuit which amplifies and inverts the radiation signal to generate an in inverted and amplified output signal, the output signal being applied to a pair of second conductive plates arranged on another two opposite sides of the cathode ray tube to cancel the low frequency radiation of the cathode ray tube.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.