Resources Contact Us Home
Solenoidal electric field lamp with reduced electromagnetic interference

Image Number 7 for United States Patent #4187445.

A solenoidal electric field lamp comprises a plurality of toroidal ferrite cores connected to a radio frequency energy source and disposed in an ionizable gas. The cores are so connected and oriented that circulating discharge currents passing through each core produce magnetic dipole fields which tend to cancel one another. Near and far field electromagnetic interference is thus reduced even when the lamp is operated at higher, more efficient frequencies. The cores are disposed in a variety of configurations.

  Recently Added Patents
PVD coated tool
Self-assembling surface coating
Zero-copy network and file offload for web and application servers
Mobile tablet information handling system support
Lubricant composition
Automated difference recognition between speaking sounds and music
High-voltage AC light-emitting diode structure
  Randomly Featured Patents
Workstation for computerized analysis in mammography
Thin film transistor array panel
Optical pickup system for reading optical disks of different thicknesses
Method and apparatus for determining switch status
Shielded connector
Nanoelectrode arrays
Method of making carbon-carbon composites
Polyvinyl acetal resin composition
Magnetoresistive element