Switchable low threshold current power supply

• US 8,912,920 B2
• Filed: 12/19/2013
• Issued: 12/16/2014
• Est. Priority Date: 12/21/2012
• Status: Expired due to Fees

• Current Assignee: Murray W. Davis
• Original Assignee: Murray W. Davis
• Inventors: Davis, Murray W.
• Primary Examiner(s): Nguyen, Nam V
• Application Number:
  US14/133,819
• Publication Number:
  US 20140176276A1
• Time in Patent Office: 362 Days
• Field of Search: 340/870.39, 340/539.1, 340/654, 340/664, 340/691.5, 322/29, 322/32, 322/59, 323/43.5, 290/52
• US Class Current: 340/870.39
• CPC Class Codes: A46B 2200/3073 Brush for cleaning specific unusual places not otherwise covered, e.g. gutters, golf clubs, tops of tin cans, corners
• CPC Class Codes: A46B 9/028 Bristle profile, the end of the bristle defining a surface other than a single plane or deviating from a simple geometric form, e.g. cylinder, sphere or cone
• CPC Class Codes: G01B 11/0616 of coating
• CPC Class Codes: G01D 11/30 Supports specially adapted for an instrument; Supports specially adapted for a set of instruments
• CPC Class Codes: G01K 13/00 Thermometers specially adapted for specific purposes
• CPC Class Codes: G01N 27/223 for determining moisture content, e.g. humidity rain detectors on vehicle windows B60S1/0825
• CPC Class Codes: G01R 1/20 Modifications of basic electric elements for use in electric measuring instruments; Structural combinations of such elements with such instruments
• CPC Class Codes: G01R 1/22 Tong testers acting as secondary windings of current transformers
• CPC Class Codes: G01R 15/186 using current transformers with a core consisting of two or more parts, e.g. clamp-on type G01R15/142 - G01R15/16 take precedence; tong testers G01R1/22
• CPC Class Codes: G01R 19/0084 measuring voltage only all subgroups of G01R19/00 take precedence
• CPC Class Codes: G01R 19/0092 measuring current only all subgroups of G01R19/00 take precedence
• CPC Class Codes: G01R 31/08 Locating faults in cables, transmission lines, or networks
• CPC Class Codes: G01R 31/086 in power transmission or distribution networks, i.e. with interconnected conductors
• CPC Class Codes: G01R 31/40 Testing power supplies testing photovoltaic devices H02S50/10
• CPC Class Codes: G01W 1/14 Rainfall or precipitation gauges measuring volume in general G01F
• CPC Class Codes: H01F 27/02 Casings
• CPC Class Codes: H01F 27/22 Cooling by heat conduction through solid or powdered fillings
• CPC Class Codes: H01F 38/30 Constructions
• CPC Class Codes: H01R 4/28 Clamped connections, spring connections made by means of terminals specially adapted for contact with, or insertion into, printed circuits H01R12/00
• CPC Class Codes: H02G 1/02 for overhead lines or cables
• CPC Class Codes: H04N 23/51 : Housings
• CPC Class Codes: H04N 7/181 : for receiving images from a plurality of remote sources
• CPC Class Codes: Y02E 10/50 : Photovoltaic [PV] energy
• CPC Class Codes: Y10T 29/49117 : Conductor or circuit manufacturing

Abstract

A device connectable to a power line conductor includes an electrically conductive insulated first winding of wire wound into at least two turns having a first and a second end. The first end is configured to be attached to a first power line conductor. An electrically conductive insulated second winding of wire wound into at least one turn having a first end connected to the second end of the first winding of wire and a second end is configured to be attached to a second power line conductor. A switchable connecting device is configured to move between a first position connecting the first and second power line conductors in series, a second position connecting the first winding of wire in series with the first and the second power line conductors, and a third position connecting the first and second power line conductors and the first and second windings of wire in series.

Claims

1. A device connectable to an electric power line conductor comprising:

an electrically conductive insulated first winding of wire wound into at least two turns having a first end and a second end, wherein the first end is configured to be attached to a first power line conductor;

an electrically conductive insulated second winding of wire wound into at least one turn having a first end connected to the second end of the first winding of wire and a second end configured to be attached to a second power line conductor; and

a switchable connecting device configured to maintain constant polarity and move between a first position connecting the first power line conductor in series with the second power line conductor, a second position with the first winding of wire in series with the first power line conductor and the second power line conductor, and a third position with the first power line conductor, the first winding of wire, and the second winding of wire connected in series with the second power line conductor.

2. The device of claim 1 including a housing mountable to the first winding of wire and the second winding of wire including an iron core power supply transformer surrounding the first winding of wire and the second winding of wire for providing increased current to a power supply module.

3. The device of claim 2 wherein when the switchable connecting device is in the first position the power supply module can operate at higher load currents than when the switchable connecting device is in the third position.

4. The device of claim 1 wherein the switchable connecting device includes a rotating switch blade and a first set of contact fingers, wherein the first set of contact fingers is electrically connected to the rotating switch blade and the rotating switch blade is configured to provide a closed circuit such that current would flow from the first power line conductor through the first winding of wire, the first set of contact fingers, the rotating switch blade, and the second power line conductor without interruption of current.

5. The device of claim 4 wherein the switchable connecting device includes a second set of contact fingers, wherein the second set of contact fingers is electrically connected to the rotating switch blade and the rotating switch blade is configured to provide a closed circuit such that current would flow from the first power line conductor through the first winding of wire, the second winding of wire, the second set of contact fingers, the rotating switch blade, and the second power line conductor without interruption of current.

6. The device of claim 1 wherein a wire diameter of the first winding of wire is greater than a wire diameter of the second winding of wire.

7. The device of claim 1 wherein the first winding of wire and the second winding of wire are detachable from the switchable connecting device without interrupting current flow through the device.

8. The device of claim 1 wherein the switchable connecting device includes a manual tap selector switch and a by-pass switch that are mechanically connected by a common shaft to move together when moving between the first position, the second position, and the third position.

9. The device of claim 1, wherein the switchable connecting device includes a manual tap selector switch includes a tap selector rotating blade mounted at 90 degrees relative to a by-pass switch rotating blade.

10. The device of claim 9, wherein the manual tap selector switch includes a first set of tap selector contact fingers mounted 180 degrees relative to a second set of tap selector contact fingers and the by-pass switch includes a first set of by-pass contact fingers mounted 180 degrees relative to a second set of by-pass contact fingers.

11. The device of claim 1, wherein a by-pass switch rotating blade is configured to overlap a first set of by-pass switch contact fingers and a second set of by-pass switch contact fingers when a tap selector rotating blade moves between contacting a first set of tap selector contact fingers and a second set of tap selector contact fingers.

12. The device of claim 1, wherein the first power line conductor and the second power line conductor form a single primary power line conductor.

13. A device connectable to an electric power line conductor comprising:

an electrically conductive insulated first winding of wire wound into at least two turns having a first end and a second end, wherein the first end is configured to be attached to a first power line conductor;

an electrically conductive insulated second winding of wire wound into at least one turn having a first end connected to the second end of the first winding of wire and a second end configured to be attached to a second power line conductor; and

a switchable connecting device configured to move between a first position connecting the first power line conductor in series with the second power line conductor, a second position with the first winding of wire in series with the first power line conductor and the second power line conductor, and a third position with the first power line conductor, the first winding of wire, and the second winding of wire connected in series with the second power line conductor, wherein the switchable connecting device includes a manual tap selector switch and a by-pass switch that are mechanically connected by a common shaft to move together when moving between the first position, the second position, and the third position.

14. The device of claim 13, wherein the manual tap selector switch includes a tap selector rotating blade mounted at 90 degrees relative to a by-pass switch rotating blade.

15. The device of claim 14, wherein the manual tap selector switch includes a first set of tap selector contact fingers mounted 180 degrees relative to a second set of tap selector contact fingers and the by-pass switch includes a first set of by-pass contact fingers mounted 180 degrees relative to a second set of by-pass contact fingers.

16. The device of claim 15, wherein the first set of tap selector contact fingers and the second set of tap selector contact fingers include an angled corner with a rounded leading edge and a horizontal slot cut midway down from a leading edge to a first mounting hole.

17. The device of claim 15 wherein the first set of by-pass contact fingers and the second set of by-pass contact fingers include an angled corner with a rounded leading edge and a horizontal slot cut midway down from a leading edge to a first mounting hole.

18. The device of claim 13 wherein the by-pass switch rotating blade is configured to overlap a first set of by-pass switch contact fingers and a second set of by-pass switch contact fingers when a tap selector rotating blade moves between contacting a first set of tap selector contact fingers and a second set of tap selector contact fingers.

19. The device of claim 18 including at least one operator handle connected to the common shaft connecting the by-pass switch rotating blade and the tap selector rotating blade.

20. The device of claim 13 wherein when the by-pass switch is in a closed position, current is configured to flow from the first power line conductor to the second power line conductor.