Capacitor based bi-directional degaussing device with chamber
US8064183B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Jun 1, 2009 |
| Grant date | Nov 22, 2011 |
| Priority date | — |
| Expiry date | Jun 22, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F13/006
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Disclosed is an apparatus for destroying electronic memory media by use of a bi-directional degaussing device. The degaussing device utilizes an SCR gate controller to cause bi-directional polarity from a charged capacitor into a sealed chamber containing the magnetic media. The chamber has a movable steel plate cover and floor that encloses the chamber containing magnetic media during the degaussing stage. The cover and floor cause a reflective chamber that focuses and directs the flux level to the magnetic media. The gate controller allows the use of the same capacitor bank to power a coil in two different directions to obtain effective degaussing without multiple coils or directional capacitors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.