Ferroelectric transformer-free uninterruptible power supply (UPS) systems and methods for communications signal distribution systems
First Claim
1. An Uninterruptible Power Supply (UPS) for a communications signal distribution system that distributes a communications signal and Alternating Current (AC) power over a coaxial cable having a conductor and a sheath, the UPS comprising:
- an input neutral line;
an input voltage line;
a first circuit that is configured to convert an input voltage between the input neutral line and the input voltage line into first and second complementary Direct Current (DC) voltages; and
a second circuit that is configured to convert the first and second complementary DC voltages into an AC voltage between an output neutral line and an output voltage line and to connect the output neutral line to a coaxial cable sheath and the output voltage line to a coaxial cable conductor, the first and second circuits further being configured to connect the input neutral line to the output neutral line without an intervening transformer winding.
4 Assignments
0 Petitions
Accused Products
Abstract
Uninterruptible Power Supply (UPS) systems and methods for a communications signal distribution system, such as a cable television (CATV) signal distribution system that distributes a communication signal and an Alternating Current (AC) power over a coaxial cable having a conductor and a sheath, include an input neutral line and an input voltage line. A first circuit is configured to convert an input voltage between the input neutral line and the input voltage line into first and second complementary Direct Current (DC) voltages. A second circuit is configured to convert the first and second complementary DC voltages into an AC voltage between an output neutral line and an output voltage line, and to connect the output neutral line to a coaxial cable sheath and the output voltage line to a coaxial cable conductor. The first and second circuits are configured to connect the input neutral line to the output neutral line without an intervening transformer winding.
-
Citations
52 Claims
-
1. An Uninterruptible Power Supply (UPS) for a communications signal distribution system that distributes a communications signal and Alternating Current (AC) power over a coaxial cable having a conductor and a sheath, the UPS comprising:
-
an input neutral line;
an input voltage line;
a first circuit that is configured to convert an input voltage between the input neutral line and the input voltage line into first and second complementary Direct Current (DC) voltages; and
a second circuit that is configured to convert the first and second complementary DC voltages into an AC voltage between an output neutral line and an output voltage line and to connect the output neutral line to a coaxial cable sheath and the output voltage line to a coaxial cable conductor, the first and second circuits further being configured to connect the input neutral line to the output neutral line without an intervening transformer winding. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
-
-
21. An Uninterruptible Power Supply (UPS) for a communications signal distribution system that distributes a communications signal and Alternating Current (AC) power over a coaxial cable, the UPS comprising:
-
a first circuit that is responsive to an AC input voltage and is configured to convert the AC input voltage into a Direct Current (DC) voltage;
a battery that produces a battery voltage and is configured to be charged by the DC voltage; and
a second circuit that is responsive to the battery voltage and is configured to convert the battery voltage into an AC voltage and to place the AC voltage on a coaxial cable regardless of whether the AC input voltage is operational. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
-
-
33. An Uninterruptible Power Supply (UPS) for a communications signal distribution system that distributes a communications signal and Alternating Current (AC) power over a coaxial cable, the UPS comprising:
-
a first circuit that is responsive to a Direct Current (DC) input voltage and is configured to convert the DC input voltage into first and second complementary DC voltages; and
a second circuit that is responsive to the first and second complementary DC voltages and is configured to convert the first and second complementary DC voltages into an AC voltage and to place the AC voltage on a coaxial cable. - View Dependent Claims (34, 35, 36, 37, 38, 39, 40, 41, 42, 43)
-
-
44. A method for supplying power to a communications signal distribution system that distributes a communications signal and Alternating Current (AC) power over a coaxial cable having a conductor and a sheath, the method comprising:
-
converting an input voltage between an input neutral line and an input voltage line into first and second complementary Direct Current (DC) voltages;
converting the first and second complementary DC voltages into an AC voltage between an output neutral line and an output voltage line while connecting the input neutral line to the output neutral line without an intervening transformer winding; and
connecting the output neutral line to a coaxial cable sheath and the output voltage line to a coaxial cable conductor. - View Dependent Claims (45, 46, 47, 48, 49, 50, 51, 52)
-
Specification