Shock proof devices and methods
First Claim
1. A device for preventing an electric shock, the device comprising:
- output terminals for connecting to an external load;
a low voltage circuit for carrying a first current (IL) to the output terminals, the low voltage circuit comprising a first coil disposed about a magnetic core;
a high voltage circuit for carrying a second current (IH) to the output terminals, the high voltage circuit comprising a second coil disposed about the magnetic core; and
a control relay configured to electrically connect the output terminals to only one of the high voltage circuit and the low voltage circuit based at least partly on the first current (IL),wherein the control relay includes a default state and an energized state, and wherein the low voltage circuit is connected to the output terminals in the default state and the high voltage circuit is connected to the output terminals in the energized state, wherein the control relay is configured to switch from the default state to the energized state when a magnetic field produced by the magnetic core due to the IL current flowing in the first coil equals or exceeds a threshold magnetic field, and wherein the control relay remains in the energized state while a magnetic field produced by the magnetic core due to the IH current flowing in the second coil equals to or exceeds a threshold magnetic field.
3 Assignments
0 Petitions
Accused Products
Abstract
Devices and methods for preventing shock from a high voltage power source. In one embodiment, a device for preventing an electric shock, comprises output terminals for connecting to an external load, a low voltage circuit for carrying a first current (IL) to the output terminals, the low voltage circuit comprising a first coil disposed about a magnetic core, and a high voltage circuit for carrying a second current (IH) to the output terminals, the high voltage circuit comprising a second coil disposed about the magnetic core, and a control relay configured to electrically connect one of the high voltage circuit and the low voltage circuit to the output terminals based at least partly on the first current (IL).
72 Citations
15 Claims
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1. A device for preventing an electric shock, the device comprising:
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output terminals for connecting to an external load; a low voltage circuit for carrying a first current (IL) to the output terminals, the low voltage circuit comprising a first coil disposed about a magnetic core; a high voltage circuit for carrying a second current (IH) to the output terminals, the high voltage circuit comprising a second coil disposed about the magnetic core; and a control relay configured to electrically connect the output terminals to only one of the high voltage circuit and the low voltage circuit based at least partly on the first current (IL), wherein the control relay includes a default state and an energized state, and wherein the low voltage circuit is connected to the output terminals in the default state and the high voltage circuit is connected to the output terminals in the energized state, wherein the control relay is configured to switch from the default state to the energized state when a magnetic field produced by the magnetic core due to the IL current flowing in the first coil equals or exceeds a threshold magnetic field, and wherein the control relay remains in the energized state while a magnetic field produced by the magnetic core due to the IH current flowing in the second coil equals to or exceeds a threshold magnetic field. - View Dependent Claims (2, 3)
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4. A device for preventing an electric shock, the device comprising:
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a low voltage source; high voltage input terminals for connecting to a high voltage source; a power outlet comprising a pair of output terminals for providing either a low voltage current (IL) or a high voltage current (IH) to an external electrical load; and a control relay for selectively providing power from one of the low voltage source and the high voltage source to the power outlet, wherein the control relay comprises a low voltage coil configured to carry the IL current and a high voltage coil configured to carry the IH current, wherein the control relay includes a default state and an energized state, wherein low voltage is provided in the default state and high voltage is provided in the energized state, and wherein the control relay remains in the energized state while a magnetic field produced by the magnetic core due to the IH current flowing in the high voltage coil equals to or exceeds a threshold magnetic field. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification