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
Anomalous data detection method
Method of purifying crude acetone stream
Method and system for physical verification using network segment current
Method and system for detecting target objects
Electrical connector
Communication apparatus, and method and program for controlling same
Method for manufacturing thin film transistor and method for manufacturing display device
  Randomly Featured Patents
Individual identification recognition system
Lighting optical machine and defect inspection system
Dish drainer
Mating assembly for an OEM device
Carburetion apparatus
Call control with transmission priority in a packet communication network of an ATM type
System and associated friction stir welding (FSW) assembly, controller and method for performing a friction stir welding operation
Switch-mode power supply (SMPS) with auto-tuning using limit-cycle oscillation response evaluation
Cleansing article
Optical data recording medium excellent in recording sensitivity and recording property