Resonant inductive coupling extension cord for light emitting diodes

• US 9,780,576 B1
• Filed: 11/05/2015
• Issued: 10/03/2017
• Est. Priority Date: 11/05/2015
• Status: Active Grant

• Current Assignee: John Taylor
• Original Assignee: John Taylor
• Inventors: Cates, Jr., Marion Harlan
• Primary Examiner(s): Tran, Anh
• Application Number:
  US14/933,962
• Time in Patent Office: 698 Days
• Field of Search: None
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02M 7/4826 operating from a resonant DC source, i.e. the DC input voltage varies periodically, e.g. resonant DC-link inverters
• CPC Class Codes: H02M 7/53803 with automatic control of output voltage or current
• CPC Class Codes: H05B 45/3725 Switched mode power supply [SMPS]
• CPC Class Codes: H05B 45/39 Circuits containing inverter bridges

Abstract

A resonant inductive coupling extension cord and light emitting diode system having a plurality of light emitting diodes (LEDS) connected to a receiver coil designed to receive a pulsed DC current from a power supply by means of resonant inductive coupling. The power supply generates a pulsed DC current at a frequency of 0.8 KHz or greater, wherein the pulsed DC current is positive relative to ground. The power supply provides the pulsed DC current through a power coil and through the extension cords to the receiver coil. The (LEDs) are powered through resonant inductive coupling up to 160 volts. The light emitting diodes are self-limiting with respect to current. There is no potential for a spark or shock hazard when the extension cords are connected to the power supply, to the LED system or each other or whether the extension cords or LED are cut or broken.

Claims

1. A resonant inductive coupling extension cord system, comprising:

a) a power supply having a power coil,

b) said power supply generating a pulsed DC current at a frequency of 0.8 KHz or greater in said power coil, wherein said pulsed DC current is positive relative to ground;

c) said power coil designed to transmit said pulsed DC current to a receiver coil by means of resonant inductive coupling;

d) an extension cord or a plurality of extension cords, each extension cord having a receiver coil on one end to receive said pulsed DC current through resonant inductive coupling and a transfer coil on an opposite end to transmit said pulsed DC current through resonant inductive coupling; and

e) said power supply providing said pulsed DC current, by means of resonant inductive coupling, through said power coil to any receiver coil on an electrically operated device, to any receiver coil on said extension cord or said plurality of said extension cords, and to any transfer coil on said extension cord or on said plurality of extension cords.

2. The resonant inductive coupling extension cord system of claim 1, further comprising a receiver coil of each extension cord in said plurality of extension cords being connectable by resonant inductive coupling to a transfer coil of another extension cord in said plurality of extension cords, in series or in parallel or in series and in parallel.

3. The resonant inductive coupling extension cord system of claim 1, further comprising said power supply having two n-channel metal oxide semiconductor field-effect transistors (MOSFETs) in phase opposition to generate said pulsed DC current.

4. The resonant inductive coupling extension cord system of claim 3, wherein said MOSFETs are designed to deliver an output of two DC pulses, caused by alternatively grounding two sides of said power coil, said power coil receiving current through a center tap.

5. The resonant inductive coupling extension cord system of claim 1, further comprising a plurality of light emitting diodes connected to a receiver coil designed to receive said pulsed DC current from said power supply by means of resonant inductive coupling, said receiver coil of said plurality of light emitting diodes being connectable by resonant inductive coupling to said power coil or to a transfer coil.

6. The resonant inductive coupling extension cord system of claim 5, further comprising said plurality of said light emitting diodes being arranged in a first section and in a second section, wherein said first section has one or more light emitting diodes which are arranged in one direction and said second section has one or more light emitting diodes which are arranged in a second opposite direction.

7. The resonant inductive coupling extension cord system of claim 6, further comprising each said section having a plurality of rows of LEDs, with each row having a plurality of LEDs connected in series and having LEDs in a row being connected in parallel to adjacent LEDs in an adjacent row.

8. The resonant inductive coupling extension cord system of claim 5 wherein said light emitting diodes are powered by said power supply by resonant inductive coupling up to 160 volts.

9. The resonant inductive coupling extension cord system of claim 6 wherein said light emitting diodes are self-limiting with respect to current.

10. A resonant inductive coupling extension cord system, comprising:

a) a power supply having a power coil,

b) said power supply generating a pulsed DC current at a frequency of 0.8 KHz or greater in said power coil, wherein said pulsed DC current is positive relative to ground;

c) said power coil designed to transmit said pulsed DC current to a receiver coil by means of resonant inductive coupling;

d) an extension cord or a plurality of extension cords, each extension cord having a receiver coil on one end to receive said pulsed DC current through resonant inductive coupling and a transfer coil on an opposite end to transmit said pulsed DC current through resonant inductive coupling; and

e) said power supply providing said pulsed DC current, by means of resonant inductive coupling, through said power coil to any receiver coil on an electrically operated device, to any receiver coil on said extension cord or said plurality of said extension cords, and to any transfer coil on said extension cord or on said plurality of extension cords;

f) a receiver coil of each extension cord in said plurality of extension cords being connectable to a transfer coil of another extension cord in said plurality of extension cords, in series or in parallel or in series and in parallel; and

g) a plurality of light emitting diodes connected to a receiver coil to receive said pulsed DC current from said power supply, said receiver coil of said plurality of light emitting diodes being connectable to said power coil or to a transfer coil.

11. The resonant inductive coupling extension cord system of claim 10, further comprising said power supply having two n-channel metal oxide semiconductor field-effect transistors (MOSFETs) in phase opposition to generate said pulsed DC current.

12. The resonant inductive coupling extension cord system of claim 11, further comprising said MOSFETs being constructed to deliver an output of two DC pulses, caused by alternatively grounding two sides of said power coil, said power coil receiving current through a center tap.

13. The resonant inductive coupling extension cord system of claim 10, further comprising said plurality of said light emitting diodes being arranged in a first section and in a second section, wherein said first section has one or more light emitting diodes which are arranged in one direction and said second section has one or more light emitting diodes which are arranged in a second opposite direction.

14. The resonant inductive coupling extension cord system of claim 13, further comprising each said section having a plurality of rows of LEDs, with each row having a plurality of LEDs connected in series and having LEDs in a row being connected in parallel to adjacent LEDs in an adjacent row.

15. The resonant inductive coupling extension cord system of claim 10, wherein said light emitting diodes are powered by said power supply up to 160 volts.

16. The resonant inductive coupling extension cord system of claim 13, wherein said light emitting diodes are self-limiting with respect to current.

17. A resonant inductive coupling extension cord system, comprising:

a) a power supply having a power coil,

b) said power supply generating a pulsed DC current at a frequency of 0.8 KHz or greater in said power coil, wherein said pulsed DC current is positive relative to ground;

c) said power coil designed to transmit said pulsed DC current to a receiver coil by means of resonant inductive coupling;

d) an extension cord or a plurality of extension cords, each extension cord having a receiver coil on one end to receive said pulsed DC current through resonant inductive coupling and a transfer coil on an opposite end to transmit said pulsed DC current through resonant inductive coupling; and

e) said power supply providing said pulsed DC current, by means of resonant inductive coupling, through said power coil to any receiver coil on an electrically operated device, to any receiver coil on said extension cord or said plurality of said extension cords, and to any transfer coil on said extension cord or on said plurality of extension cords;

f) a receiver coil of each extension cord in said plurality of extension cords being connectable to a transfer coil of another extension cord in said plurality of extension cords, in series or in parallel or in series and in parallel;

g) a plurality of light emitting diodes connected to a receiver coil to receive said pulsed DC current from said power supply, said receiver coil of said plurality of light emitting diodes being connectable to said power coil or to a transfer coil; and

h) said plurality of said light emitting diodes being arranged in a first section and in a second section, wherein said first section has one or more light emitting diodes which are arranged in one direction and said second section has one or more light emitting diodes which are arranged in a second opposite direction, wherein said light emitting diodes are powered by said power supply up to 160 volts, and wherein said light emitting diodes are self-limiting with respect to current.

18. The resonant inductive coupling extension cord system of claim 17, further comprising each said section having a plurality of rows of LEDs, with each row having a plurality of LEDs connected in series and having LEDs in a row being connected in parallel to adjacent LEDs in an adjacent row.

19. The resonant inductive coupling extension cord system of claim 17, further comprising said power supply having two n-channel metal oxide semiconductor field-effect transistors (MOSFETs) in phase opposition to generate said pulsed DC current.

20. The resonant inductive coupling extension cord system of claim 19, wherein said MOSFETs are designed to deliver an output of two DC pulses, caused by alternatively grounding two sides of said power coil, said power coil receiving current through a center tap.

21. A light emitting diode system, comprising

a) a plurality of light emitting diodes connected to a receiver coil designed to receive a pulsed DC current from a power supply by means of resonant inductive coupling;

b) said power supply generating a pulsed DC current at a frequency of 0.8 KHz or greater, wherein said pulsed DC current is positive relative to ground; and

c) said power supply providing said pulsed DC current, by means of resonant inductive coupling, through a power coil to said receiver coil.

22. The light emitting diode system of claim 21, further comprising said power supply having two n-channel metal oxide semiconductor field-effect transistors (MOSFETs) in phase opposition to generate said pulsed DC current.

23. The light emitting diode system of claim 22, wherein said MOSFETs are designed to deliver an output of two DC pulses, caused by alternatively grounding two sides of said power coil, said power coil receiving current through a center tap.

24. The light emitting diode system of claim 21, further comprising said plurality of said light emitting diodes being arranged in a first section and in a second section, wherein said first section has one or more light emitting diodes which are arranged in one direction and said second section has one or more light emitting diodes which are arranged in a second opposite direction.

25. The resonant inductive coupling extension cord system of claim 24, further comprising each said section having a plurality of rows of LEDs, with each row having a plurality of LEDs connected in series and having LEDs in a row being connected in parallel to adjacent LEDs in an adjacent row.

26. The light emitting diode system of claim 21 wherein said light emitting diodes are powered by said power supply by resonant inductive coupling up to 160 volts.

27. The light emitting diode system of claim 21 wherein said light emitting diodes are self-limiting with respect to current.

28. A light emitting diode system, comprising

a) a plurality of light emitting diodes connected to a receiver coil designed to receive a pulsed DC current from a power supply by means of resonant inductive coupling;

b) said power supply generating a pulsed DC current at a frequency of 0.8 KHz or greater, wherein said pulsed DC current is positive relative to ground;

c) said power supply providing said pulsed DC current, by means of resonant inductive coupling, through a power coil to said receiver coil;

d) said plurality of said light emitting diodes being arranged in a first section and in a second section, wherein said first section has one or more light emitting diodes which are arranged in one direction and said second section has one or more light emitting diodes which are arranged in a second opposite direction, wherein said light emitting diodes are powered by said power supply by resonant inductive coupling up to 160 volts and wherein said light emitting diodes are self-limiting with respect to current.

29. The resonant inductive coupling extension cord system of claim 28, further comprising each said section having a plurality of rows of LEDs, with each row having a plurality of LEDs connected in series and having LEDs in a row being connected in parallel to adjacent LEDs in an adjacent row.

30. The light emitting diode system of claim 28, further comprising said power supply having two n-channel metal oxide semiconductor field-effect transistors (MOSFETs) in phase opposition to generate said pulsed DC current.

31. The light emitting diode system of claim 30, wherein said MOSFETs are designed to deliver an output of two DC pulses, caused by alternatively grounding two sides of said power coil, said power coil receiving current through a center tap.