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
Vapor phase decarbonylation process
Apparatus and method for performing lawful intercept in group calls
Sweetener compositions having enhanced sweetness and improved temporal and/or flavor profiles
Method of preparing MgB.sub.2 superconducting wire and the MgB.sub.2 superconducting wire prepared thereby
Conductor-mixed active electrode material, electrode structure, rechargeable battery, and manufacturing method of conductor-mixed active electrode material
Method of treating a preceramic material
Novelty headband
  Randomly Featured Patents
Electrochemical process for decomposing hydrogen sulfide to produce hydrogen and sulfur
Biotechnical production process of piperazine R-.alpha.-carboxylic acids and piperazine S-.alpha.-carboxylic acid amide
Shift valve for automatic transmission
Data photographic device for camera
Vehicle recorder system
Method and apparatus for displaying an image and data related to the image conditioned on user identifier
Semiconductor memory module incorporating antenna
Tin-indium alloy electroplating solution
Key for SMT applications
Data conversion system