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
Headset systems and methods
Automatic misalignment balancing scheme for multi-patterning technology
Method and structure for forming ETSOI capacitors, diodes, resistors and back gate contacts
System and method for providing a path avoidance feature in a network environment
Vacuum cleaner filter adapter ring
Determination of copy number variations using binomial probability calculations
  Randomly Featured Patents
Thermosetting imide resins from amino acid hydrazide
Electronic apparatus having communicating function and privacy mode
Retractable blind or shade assembly
Tea table
Positive active material for an electric cell, a method of preparing the positive active material and a cell which uses it
Mutant-type acetyltransferase Mpr1
Spring piloted safety valve with jet venturi bias
Semi-extensible steel soil reinforcements for mechanically stabilized embankments
Oxidation dyeing composition for keratin fibres and dyeing method using said composition
Dental cream package