Inductively powered secondary assembly

• US 20070205730A1
• Filed: 11/10/2006
• Published: 09/06/2007
• Est. Priority Date: 06/21/1999
• Status: Active Grant

• Current Assignee: Philips IP Ventures B.V. (Koninklijke Philips N.V.)
• Original Assignee: Access Business Group International LLC (Alticor Incorporated)
• Inventors: Baarman, David
• Granted Patent: US 7,474,058 B2
• Time in Patent Office: Days
• US Class Current: 315/338
• CPC Class Codes: A61L 2/10 Ultraviolet radiation
• CPC Class Codes: B01D 2201/301 Details of removable closures, lids, caps, filter heads
• CPC Class Codes: B01D 2201/34 Seals or gaskets for filtering elements
• CPC Class Codes: C02F 1/283 using coal, charred products, or inorganic mixtures containing them
• CPC Class Codes: C02F 1/32 with ultraviolet light
• CPC Class Codes: C02F 1/325 Irradiation devices or lamp constructions
• CPC Class Codes: C02F 2201/006 Cartridges
• CPC Class Codes: C02F 2201/3222 Units using UV-light emitting diodes [LED]
• CPC Class Codes: C02F 2201/3228 Units having reflectors, e.g. coatings, baffles, plates, mirrors
• CPC Class Codes: C02F 2201/326 Lamp control systems
• CPC Class Codes: C02F 9/20 Portable or detachable small-scale multistage treatment devices, e.g. point of use or laboratory water purification systems
• CPC Class Codes: F21W 2131/103 of streets or roads
• CPC Class Codes: H01F 38/14 Inductive couplings for wireless supply or distribution of electric power using inductive coupling H02J50/10
• CPC Class Codes: H01J 5/50 Means forming part of the tube or lamps for the purpose of providing electrical connection to it
• CPC Class Codes: H01J 5/52 directly applied to or forming part of the vessel
• CPC Class Codes: H01J 5/54 supported by a separate part, e.g. base
• CPC Class Codes: H01J 61/56 One or more circuit elements structurally associated with the lamp
• CPC Class Codes: H01K 1/44 directly applied to, or forming part of, the vessel
• CPC Class Codes: H01K 1/46 supported by a separate part, e.g. base, cap
• CPC Class Codes: H05B 39/00 Circuit arrangements or apparatus for operating incandescent light sources structurally associated with the incandescent lamps H01K1/62
• CPC Class Codes: H05B 41/10 : magnetic only
• CPC Class Codes: H05B 41/24 : in which the lamp is fed by high frequency ac, or with separate oscillator frequencyH05B41/26 takes precedence
• CPC Class Codes: H05B 41/295 : with semiconductor devices and specially adapted for lamps with preheating electrodes, e.g. for fluorescent lamps
• CPC Class Codes: H05B 41/36 : Controlling
• CPC Class Codes: H05B 47/25 : Circuit arrangements for protecting against overcurrent
• CPC Class Codes: Y02B 20/00 : Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps

Abstract

A lamp assembly configured to inductively receive power from a primary coil. The lamp assembly includes a lamp circuit including a secondary and a lamp connected in series. In a first aspect, the lamp circuit includes a capacitor connected in series with the lamp and the secondary to tune the circuit to resonance. The capacitor is preferably selected to have a reactance that is substantially equal to or slightly less than the reactance of the secondary and the impedance of the lamp. In a second aspect, the lamp assembly includes a sealed transparent sleeve that entirely encloses the lamp circuit so that the transparent sleeve is fully closed and unpenetrated. The transparent sleeve is preferably the lamp sleeve itself, with the secondary, capacitor and any desired starter mechanism disposed within its interior.

Claims

1-9. -9. (canceled)

10. An inductively powered secondary assembly comprising:

an inductive secondary to receive power from an inductive primary, the inductive secondary having a reactance;

a load disposed in series with the inductive secondary, the load having an impedance; and

a capacitor disposed in series with the inductive secondary and the load, the capacitor selected to have a reactance that is substantially equal to or slightly less than the sum of the impedance of the load and the reactance of the inductive secondary, whereby the load and the inductive secondary operate substantially at resonance.

11. The inductively powered secondary assembly of claim 10 wherein said inductive secondary is a coil of LITZ wire.

12. The inductively powered secondary assembly of claim 11 further including a sleeve surrounding and fully enclosing said inductive secondary, said load and said capacitor, said sleeve being unpenetrated.

13. The inductively powered secondary assembly of claim 10 wherein said inductive secondary is a coil of magnetic wire.

14. An inductively powered secondary assembly comprising:

an inductive secondary to receive power from an inductive primary, the inductive secondary having a reactance;

a load disposed in series with the inductive secondary, the load having an impedance that is substantially equal to the reactance of the inductive secondary; and

a capacitor disposed in series with the inductive secondary and the load, the capacitor selected to have a reactance that is substantially equal to or slightly less than the sum of the impedance of the load and the reactance of the inductive secondary, whereby the load and the inductive secondary operate substantially at resonance.

15. The inductively powered secondary assembly of claim 14 wherein said inductive secondary is a coil of LITZ wire.

16. The inductively powered secondary assembly of claim 15 further including a sleeve surrounding and fully enclosing said inductive secondary, said load and said capacitor, said sleeve being unpenetrated.

17. The inductively powered secondary assembly of claim 14 wherein said inductive secondary is a coil of magnetic wire.

18. An inductively powered secondary assembly comprising:

an inductive secondary to receive power from an inductive primary;

a load disposed in series with the inductive secondary; and

a capacitor disposed in series with the inductive secondary and the load, the capacitor selected to have a reactance that is substantially equal to or slightly less than the sum of the impedance and the reactance of the inductive secondary and the load, whereby the load and the inductive secondary operate substantially at resonance.

19. The inductively powered secondary assembly of claim 18 wherein said inductive secondary is a coil of LITZ wire.

20. The inductively powered secondary assembly of claim 19 further including a sleeve surrounding and fully enclosing said inductive secondary, said load and said capacitor, said sleeve being unpenetrated.

21. The inductively powered secondary assembly of claim 18 wherein said inductive secondary is a coil of magnetic wire.