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A surge protection device with an internal circuitry that protects a premise device from a surge input that arises from a transient event, e.g., a lightning strike. The internal circuitry can comprise a surge path that includes windings, e.g., inductors, and in one embodiment the surge path comprise

A surge protection device with an internal circuitry that protects a premise device from a surge input that arises from a transient event, e.g., a lightning strike. The internal circuitry can comprise a surge path that includes windings, e.g., inductors, and in one embodiment the surge path comprises a first winding and a second winding that is coupled in series to the first winding. The internal circuitry can also comprise a blocking element that is positioned relative to the surge path so that the blocking element receives the surge input before the premise device, wherein the blocking element can be selected so as to isolate the premise device from the surge input.

대표청구항 ▼

1. A surge protection device for protecting a premise device from a surge input originating from a CATV system, said surge protection device comprising: a first circuit comprising a main line having a premise side, and a head-end side for receiving a downstream bandwidth;a second circuit coupled to

1. A surge protection device for protecting a premise device from a surge input originating from a CATV system, said surge protection device comprising: a first circuit comprising a main line having a premise side, and a head-end side for receiving a downstream bandwidth;a second circuit coupled to the main line, the second circuit comprising a surge path for transmitting the surge input to a ground;a blocking element coupled between the surge path and the premise device, the blocking element for receiving the surge input before the premise device, wherein the blocking element is selected to block the surge input long enough for the surge input to dissipate in the surge path to the level that it can no longer damage the premise device; anda directional coupler coupling the main line and the surge path, wherein the surge input passes through directional coupler to the ground. 2. A surge protection device according to claim 1, wherein the surge path comprises a first winding and a second winding coupled in series with the first winding, and wherein the surge input passes through the first winding and the second winding to the ground. 3. A surge protection device according to claim 1, further comprising an RF transformer coupling the surge path and the main line, wherein the surge path is coupled to the RF transformer so as to cause the surge input to pass through the RF transformer to the ground. 4. A surge protection device according to claim 1, wherein the directional coupler exhibits a value of characteristic impedance that is the same as a value of characteristic impedance for the main line. 5. A surge protection device according to claim 1, wherein the directional coupler comprises a plurality of windings, wherein the surge path comprises one or more of the windings, and wherein the surge input passes through the windings to the ground. 6. A surge protection device according to claim 1, further comprising a filter circuit coupled to the main line between the blocking element and the premise device. 7. A surge protection device according to claim 6, wherein the filter circuit comprises one or more of a low pass filter, a high pass filter, a bandpass filter, and a bandstop filter. 8. A signal conditioning device configured to isolate a premise device from a surge input, said signal conditioning device comprising: a main line for transmitting a downstream bandwidth from a head-end facility to the premise device;a surge path coupled to the main line, the surge path comprising a first winding and a second winding coupled in series with the first winding, wherein the surge input passes through the first winding and the second winding to the ground;a blocking element coupled in series between the surge path and the premise device, the blocking element receiving the surge input before the premise device, wherein the blocking element is selected to block the surge input long enough for the surge input to dissipate in the first and second windings to the level that it can no longer damage the premise device; anda directional coupler coupled to the main line, the directional coupler comprising the first winding and the second winding. 9. A signal conditioning device according to claim 8, further comprising a filter device coupled to the main line, wherein the filter device is positioned so as to receive the surge input after the blocking element, and before the premise device. 10. A signal conditioning device according to claim 8, further comprising a first RF transformer coupling the main line and the surge path, wherein the first RF transformer comprises a first inductor selected from one of the first winding and the second winding. 11. A signal conditioning device according to claim 10, further comprising a second RF transformer coupled to the first RF transformer, wherein the second RF transformer comprises a second inductor selected one of the first winding and the second winding, and wherein the second inductor is different from the first inductor. 12. A signal conditioning device according to claim 8, wherein the blocking element comprises a dielectric material. 13. A signal conditioning device according to claim 8, wherein the blocking element comprises a capacitor. 14. A system for directing a surge input away from a premise device in a premise, the system comprising: a surge protection device secured to the premise, the surge protection device comprising an internal circuitry, the internal circuitry comprising, a main line for transmitting a downstream bandwidth to the premise device,a surge path coupled to the main line, the surge path comprising a first winding and a second winding coupled in series with the first winding,a blocking element coupled to the internal circuitry, the blocking element receiving the surge input before the premise device,wherein the surge input passes through the first winding and the second winding to the ground, wherein the blocking element is selected to block the surge input long enough for the surge input to dissipate in the first and second windings to the level that it can no longer damage the premise device andwherein the internal circuitry comprises a directional coupler coupling the main line and the surge path, and wherein the surge input passes through the directional coupler to ground. 15. A system according to claim 14, wherein the directional coupler comprises one of the first winding and the second winding. 16. A system according to claim 14, wherein the blocking element comprises a capacitor. 17. A system according to claim 14, wherein the surge path is inductively coupled to the main line.