Apparatus for transferring intelligence between two voltage levels

Claim 2

Apparatus for transmitting intelligence between two potential levels comprising first and second couplers, each of said couplers including first and second end terminals capacitively coupled together, first and second impedance coupling devices, each of said impedance coupling devices having a first pair of electrically spaced terminals and an intermediate terminal, first means coupling said intermediate terminal of said first device to said potential at a first of said levels, second means coupling said intermediate terminal of said second device to said potential at the second of said levels, third means coupling said spaced terminals of said first device to said first end terminals, fourth means coupling said spaced terminals of said second device to said second end terminals, intelligence transmitting means coupled to said first device to supply an intelligence signal thereto, and an intelligence receiving means coupled to said second device to receive said intelligence signal transmitted through said couplers.

Claim 3

The combination of claim 1 in which each said coupler includes a plurality of series connected capacitive devices.

Claim 4

The combination of claim 1 in which each said coupler comprises a plurality of series connected suspension insulators.

Claim 5

The combination of claim 1 in which said intelligence transmitting means includes a current to frequency transducer and a transmitter, said transducer having an input connected to be energized as a function of the current in a conductor at said first potential level and an output coupled to said transmitter, and means coupling said transmitter to said conductor for the supply of energy to said transmitter from said conductor.

Claim 6

The combination of claim 4 in which said conductor is energized with alternating current, said transmitter includes first and second oscillators, said first oscillator being rendered effective during the first half-cycles of one polarity and said second oscillator being rendered effective during second half cycles of a second polarity.

Claim 7

The combination of claim 5 in which the rendering of said oscillators effective is controlled by said means which supplies energy to said transmitter from said conductor.

Claim 8

The combination of claim 5 in which said oscillators transmit signals at different frequencies whereby current directions in said conductor is transmitted without phase delay.

Claim 9

The combination of claim 1 in which each said impedance coupling device is inductive in nature and includes winding means, said spaced terminals being connected to said winding means at spaced portions thereof and said intermediate terminal being connected to said winding means intermediate said spaced portions.

Claim 10

The combination of claim 8 in which said intermediate terminal is equally spaced inductively from each of said end terminals.

Claim 11

The combination of claim 9 in which each said inductive device includes a second pair of spaced terminals connected to said winding means, said transmitting means being coupled between said second pair of spaced terminals of said first inductive device, and said receiving means being coupled between said second pair of spaced terminals of said second inductive device.

Claim 12

The combinations of claim 10 in which the portion of said winding means of each said impedance device to which its second pair of spaced terminals is connected is conductively isolated from and inductively coupled to the portion of said winding means of the respective said impedance device to which its said first pair of spaced terminals is connected.

Claim 13

In a relaying system for an alternating potential power transmission line having a current conductor at a potential difference with respect to ground, a pair of couplers, each of said couplers including first and second terminals capacitively coupled together, first and second transformers, each of said transformers having a first winding portion including a first pair of end terminals and an intermediate terminal and a second winding portion including a second pair of end terminals, means coupling said intermediate terminal of said first transformer to said conductor, means coupling said intermediate terminal of said second transformer to ground, means coupling said first pair of end terminals of said first transformer between said first terminals of said couplers and said first pair of end terminals of said second transformer between said second terminals of said couplers, an intelligence transmitter having input and output circuits, means coupling said output circuit of said transmitter to said second pair of end terminals of said winding portion of said first transformer, an intelligence sensing transducer coupling said input circuit to said conductor whereby said transmitter is enabled to transmit intelligence derived from said line to said second transformer through said couplers, an intelligence receiver having input and output connections, and means coupling said input connection of said receiver to said end terminals of said second winding portion of said second transformer whereby said receiver is operable to energize its output connection with a signal representative of said derived intelligence.

Claim 14

In a relaying system for an alternating potential power transmission line having a current conductor at a potential difference with respect to ground, a pair of couplers, each of said couplers including first and second terminals capacitively coupled together, first and second transformers, each of said transformers having a first winding portion including a first pair of end terminals and an intermediate terminal and a second winding portion including a second pair of end terminals, means coupling said intermediate terminal of said first transformer to said conductor, means coupling said intermediate terminal of said second transformer to ground, means coupling said first pair of end terminals of said first transformer between said first terminals of said couplers and said first pair of end terminals of said second transformer between said second terminals of said couplers, an intelligence transmitter having input and output circuits, means coupling said output circuit of said transmitter to said second pair of end terminals of said winding portion of said first transformer, an intelligence sensing transducer coupling said input circuit to said conductor whereby said transmitter is enabled to transmit intelligence derived from said line to said second transformer through said couplers, an intelligence receiver having input and output connections, and means coupling said input connection of said receiver to said end terminals of said second winding portion of said second transformer whereby said receiver is operable to energize its output connection with a signal representative of said derived intelligence.