US2037183A - Carrier line power supply - Google Patents
Carrier line power supply Download PDFInfo
- Publication number
- US2037183A US2037183A US401735A US2037183A US 2037183 A US2037183 A US 2037183A US 401735 A US401735 A US 401735A US 2037183 A US2037183 A US 2037183A
- Authority
- US
- United States
- Prior art keywords
- power
- circuit
- repeater
- station
- lines
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B11/00—Communication cables or conductors
- H01B11/18—Coaxial cables; Analogous cables having more than one inner conductor within a common outer conductor
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/20—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess voltage
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/02—Details
- H04B3/44—Arrangements for feeding power to a repeater along the transmission line
Definitions
- the present invention relates to carrier wave signaling employing coaxial conductor lines, and more particularly to the supply of power over such lines to outlying unattended repeater stations.
- a practical type of coaxial conductor system is one using two separate coaxial pairs, one for transmitting exclusively in one direction and the other in the other direction.
- One-way repeaters are inserted in each line at intervals of the order of five or ten miles. It is uneconomical of plant, space and personnel to make each of these repeaters an attended station requiring suitable location and housing.
- the attended stations may, for example, be at intervals of fifty miles, with four unattended stations between each two attended stations.
- a general object of the invention is to supply power over a pair of coaxial lines to repeaters 1ocated on the lines.
- Fig. 1 is a block diagram showing the general layout of a pair of attended stations with intermediate unattended repeaters
- Fig. 2 is a schematic circuit diagram of a terminal and one unattended repeater showing one manner of supplying power over the coaxial lines;
- Fig. 3 is a similar circuit diagram showing an alternative manner of supplying power over the coaxial lines.
- Fig. 4 is a detail showing of a constant current device that may be used in the circuit of Fig. 3.
- Fig. 1 two attended stations I and 2 are shown interconnected by a pair of coaxial conductor lines 3 and 4.
- the attended station I may be either a terminal station or an attended repeater station and it is assumed that station 2 is a repeater station.
- Intermediate to the stations I and 2 are shown a number of unattended repeater stations R1, R2, R3, and R4. Each of these latter stations includes an eastward one-way repeater 5 and a westward one-way repeater 6.
- a source of power is located at each of the attended stations.
- This power may, for example, be derived from a commercial (iO-cycle system. Power from such a source is supplied from station I to repeater stations R1 and R2 over a two-wire circuit comprising the central conductors of the coaxial lines 3 and 4, the general power circuit or the route traversed by the power currents being indicated in this gure in heavy lines. Similarly, power is supplied from station 2 over the central conductors of the two coaxial lines to the repeater stations R3 and R4.
- a circuit 1 is provided for two purposes, (l) for taking oif some of the power supplied over the central conductors and applying this power in proper form to the repeaters 5 and 6 for energizing the tubes in these repeaters, and (2) for transmitting some of the power on to the next unattended repeater if that is desired.
- the circuit 1, for example, may include suitable transformers, rectiers, etc. to be described more fully hereinafter.
- Fig. 2 shows in greater detail the circuits at the attended station I and at the rst unattended repeater station R1.
- the station I is shown as comprising suitable high frequency transmitting apparatus 5U and high frequency receiving apparatus 5I preferably in the form of multiplex terminal circuits for respectively impressing on the outgoing conductor 3 and receiving from the incoming conductor 4 modulated carrier waves in a large number of channels extending over a frequency range of the order of hundreds or thousands of kilocycles.
- Terminal amplifiers 5 and 6 are shown associated with the transmitting and receiving circuits, these amplifiers being energized in any suitable manner not specifically indicated in this drawing.
- These terminal muitiplex transmitting and receiving circuits may, for example, be of the type disclosed in United States patent to Espen Kunststoff et al. 1,835,031, December 8, 1931, or of any other suitable type.
- the station comprises also a source of alternating current power such as the usual 60-cycle commercial system, the source being indicated at 23.
- the terminals of this source 20 are connected through a voltage regulator 2
- is for the purpose of holding the voltage impressed on the line constant and may be of any suitable or well-known type.
- the power filter 22 is for the purpose of allowing the power current as well as the high frequency signaling current utilized by the terminal apparatus 5
- This lter may comprise series condensers 29, which are of a size to offer low impedance to the high frequency signaling current but Very high impedance to the power current; inductances 25 and condensers 21 and also inductances 25.
- the inductances 25 and 26 offer very high impedance to currents of the signaling frequency, but low impedance to the power current.
- Condensers 27 are of high impedance at the power frequency, but low impedance at the signaling frequency. By means of this filter the high frequency signaling currents are prevented from entering the power circuit and the power currents are prevented from traversing the terminal circuits used by the signaling currents.
- the outer shells of the coaxial lines 3 and 4 are connected to ground at 28, which is also preferably the mid-point of the power supply Voltage.
- the high frequency signaling currents on the line 3 pass into the amplifying repeater 5 and after amplification they pass through the power filter 24, which may be similar to power filter 23, and out on the outgoing section of coaxial line 3.
- the high frequency signaling currents in the opposite direction are amplified at 6.
- has a small secondary winding 32 for supplying the heaters or iilamentary cathodes, as the case may be, of the tubes used in the amplifiers 5 and 6. Voltage taps on the secondary of the transformer 3
- also leads through the output power filter 24 to the section of lines 3 and 4 leading to the next repeater station Rz.
- the current may be transmitted over the lines 3 and 4 at a terminal Voltage twice as high as that appearing between the conductors of either coaxial conductor.
- the terminal voltage of the power circuit attached to the central conductors of the two coaxial lines is 500 volts
- the voltage between the conductors of either line is 250 Volts.
- the outer conductor is grounded and the high potential conductor is the central conductor which is spaced a substantial distance away from the outer conductor by means of high grade insulators.
- the circuit of Fig. 3 differs from that of Fig. 2 in being a constant current rather than a constant Voltage system.
- are assumed as in the case of Fig. 2.
- are shown for maintaining the voltage constant at the output terminals of the device 2
- a constant current device 55 is connected to the output terminals of the device 2
- Two secondary windings are shown for the primary windings 5B comprising a low voltage filament or heater winding 52 and a high Voltage winding 54 leading to rectifier filter combination 53 used to supply to the amplifiers 5 and 6 a direct current voltage or series of voltages for xing the potentials of the plate and screen electrodes of the tubes.
- the high frequency signaling waves pass directly through the amplifier 5 or 6 to the outgoing sections of their respective lines.
- the power currents are taken off from the output terminals of filter 23 (as in the case of Fig. 2) and supplied through a suitable transformer 56 to the output power lter 24 leading to the next line section.
- the transformer 56 is shown connected in series with the line in this case.
- Rectifier-filter combination 33 derives suitable voltage from winding 56 and applies such voltage, rectified and filtered, to the tubes in the repeaters 5 and 6. Filament or cathode heating current is derived from one of the secondary windings of transformer 56.
- a constant current device suitable for use at in Fig. 3 is shown in detail in Fig. 4.
- a circuit of bridge configuration comprising condensers C and inductances L mu tually related to each other, the total inductance resonating with the total capacity at the power frequency.
- the load is connected across a diagonal of this circuit as illustrated.
- Steinmetz in Alternating Current Phenom ena (1916) pp. '76, '77.
- Any other suitable regulator such as a transformer with counterweighted movable secondary coil, may be used.
- the amplifying repeaters used at 5 and 6 are preferably of the general type of repeater disclosed in application for United States Letters Patent of H. S. Black, Serial No. 606,871 led April 22, 1932.
- two coaxial conductor lines connecting a pair of terminal or attended stations, means to transmit high frequency carrier waves between said stations over one of said lines in one direction and over the other of said lines in the opposite direction, one-way repeaters in tandem in each line between said stations, a power transmission circuit comprising portions of the central conductors of each of said coaxial lines in a series circuit extending from a terminal or attended station through at least one repeater point, means at said terminal station to supply power currents to said power transmission circuit, and a local circuit at a repeater point for deriving power from the circuit comprising said central conductors and using the derived power to energize the repeaters, at that point, in the two coaxial lines.
- said power transmission circuit comprises a voltage regulator at the attended station and at each repeater point for supplying power of constant voltage to the respective repeaters and to each section of the power circuit.
- said power transmission circuit includes a suitable source of power at the terminal or attended station, together with means for maintaining constant the current applied from said source to the conductors of the power circuit, whereby a constant current is delivered to the repeater points notwithstanding changes in resistance of the conductors of the power circuit.
- a carrier wave system two coaxial conductor lines extending between geographically separated stations, repeaters at intervals on each line between said stations, means to transmit carrier waves over each line between said separated stations, means to amplify the waves at said repeater points, and a power circuit extending from one of said stations to a plurality of said repeaters for supplying alternating energizing current to said repeaters, said power circuit comprising the central conductor of one coaxial line as one side and the central conductor of the other coaxial line as the return side.
- a system according to claim 4 in which means is provided to maintain constant the alternating current sent over said power circuit under the varying conditions of service.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Amplifiers (AREA)
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR816510D FR816510A (fr) | 1935-01-30 | 1935-01-30 | Perfectionnements aux systèmes de signalisation électrique |
US401735 US2037183A (en) | 1935-01-30 | 1935-01-30 | Carrier line power supply |
GB2883635A GB441825A (en) | 1935-01-30 | 1935-10-18 | Carrier line power supply |
NL75269A NL42754C (xx) | 1935-01-30 | 1935-10-23 | |
BE412432D BE412432A (xx) | 1935-01-30 | 1935-11-23 | |
DEI54196D DE733857C (de) | 1935-01-30 | 1936-01-30 | Traegerfrequenzanlage |
US15051637 US2153329A (en) | 1935-01-30 | 1937-06-26 | Carrier line power supply |
GB1767338A GB508816A (en) | 1935-01-30 | 1938-06-14 | Improvements in high frequency carrier signalling transmission systems |
FR839857D FR839857A (fr) | 1935-01-30 | 1938-06-25 | Systèmes à courant porteur |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US401735 US2037183A (en) | 1935-01-30 | 1935-01-30 | Carrier line power supply |
US15051637 US2153329A (en) | 1935-01-30 | 1937-06-26 | Carrier line power supply |
Publications (1)
Publication Number | Publication Date |
---|---|
US2037183A true US2037183A (en) | 1936-04-14 |
Family
ID=41682650
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US401735 Expired - Lifetime US2037183A (en) | 1935-01-30 | 1935-01-30 | Carrier line power supply |
US15051637 Expired - Lifetime US2153329A (en) | 1935-01-30 | 1937-06-26 | Carrier line power supply |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US15051637 Expired - Lifetime US2153329A (en) | 1935-01-30 | 1937-06-26 | Carrier line power supply |
Country Status (6)
Country | Link |
---|---|
US (2) | US2037183A (xx) |
BE (1) | BE412432A (xx) |
DE (1) | DE733857C (xx) |
FR (2) | FR816510A (xx) |
GB (2) | GB441825A (xx) |
NL (1) | NL42754C (xx) |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2663759A (en) * | 1951-05-31 | 1953-12-22 | Western Union Telegraph Co | Regulated power supply |
US3535474A (en) * | 1967-08-25 | 1970-10-20 | Philips Corp | Transmission system for the transmission of signals |
US4024356A (en) * | 1974-10-14 | 1977-05-17 | U.S. Philips Corporation | Transmission system with balanced bridge to prevent low frequency cross talk |
US5532525A (en) * | 1994-06-02 | 1996-07-02 | Albar, Inc. | Congeneration power system |
US5638244A (en) * | 1993-10-29 | 1997-06-10 | Alpha Technologies, Inc. | Apparatus and methods for generating uninterruptible AC power signals |
US5739595A (en) * | 1992-10-28 | 1998-04-14 | Alpha Technologies, Inc. | Apparatus and methods for generating an AC power signal for cable tv distribution systems |
US5760495A (en) * | 1995-02-22 | 1998-06-02 | Alpha Technologies, Inc. | Inverter/charger circuit for uninterruptible power supplies |
US20110198932A1 (en) * | 2010-02-18 | 2011-08-18 | Alpha Technologies Inc. | Ferroresonant transformer for use in uninterruptible power supplies |
US9030045B2 (en) | 2011-01-23 | 2015-05-12 | Alpha Technologies Inc. | Switching systems and methods for use in uninterruptible power supplies |
US9234916B2 (en) | 2012-05-11 | 2016-01-12 | Alpha Technologies Inc. | Status monitoring cables for generators |
US10074981B2 (en) | 2015-09-13 | 2018-09-11 | Alpha Technologies Inc. | Power control systems and methods |
US10103571B2 (en) | 2011-01-23 | 2018-10-16 | Alpha Technologies Inc. | Uninterruptible power supplies for use in a distributed network |
US10381867B1 (en) | 2015-10-16 | 2019-08-13 | Alpha Technologeis Services, Inc. | Ferroresonant transformer systems and methods with selectable input and output voltages for use in uninterruptible power supplies |
US10635122B2 (en) | 2017-07-14 | 2020-04-28 | Alpha Technologies Services, Inc. | Voltage regulated AC power supply systems and methods |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2640275A (en) * | 1949-04-29 | 1953-06-02 | Standard Oil Dev Co | Oriented dip and strike indicator for boreholes |
DE926141C (de) * | 1952-08-02 | 1955-04-07 | Siemens Ag | Schaltungsanordnung fuer die Energiefernversorgung, insbesondere von Verstaerkeraemtern |
GB872000A (en) * | 1958-04-23 | 1961-07-05 | Ass Elect Ind | Improvements relating to regulated power supply arrangements |
US4004110A (en) * | 1975-10-07 | 1977-01-18 | Westinghouse Electric Corporation | Power supply for power line carrier communication systems |
-
1935
- 1935-01-30 FR FR816510D patent/FR816510A/fr not_active Expired
- 1935-01-30 US US401735 patent/US2037183A/en not_active Expired - Lifetime
- 1935-10-18 GB GB2883635A patent/GB441825A/en not_active Expired
- 1935-10-23 NL NL75269A patent/NL42754C/xx active
- 1935-11-23 BE BE412432D patent/BE412432A/xx unknown
-
1936
- 1936-01-30 DE DEI54196D patent/DE733857C/de not_active Expired
-
1937
- 1937-06-26 US US15051637 patent/US2153329A/en not_active Expired - Lifetime
-
1938
- 1938-06-14 GB GB1767338A patent/GB508816A/en not_active Expired
- 1938-06-25 FR FR839857D patent/FR839857A/fr not_active Expired
Cited By (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2663759A (en) * | 1951-05-31 | 1953-12-22 | Western Union Telegraph Co | Regulated power supply |
US3535474A (en) * | 1967-08-25 | 1970-10-20 | Philips Corp | Transmission system for the transmission of signals |
US4024356A (en) * | 1974-10-14 | 1977-05-17 | U.S. Philips Corporation | Transmission system with balanced bridge to prevent low frequency cross talk |
US5739595A (en) * | 1992-10-28 | 1998-04-14 | Alpha Technologies, Inc. | Apparatus and methods for generating an AC power signal for cable tv distribution systems |
US5638244A (en) * | 1993-10-29 | 1997-06-10 | Alpha Technologies, Inc. | Apparatus and methods for generating uninterruptible AC power signals |
US5642002A (en) * | 1993-10-29 | 1997-06-24 | Alpha Technologies | Apparatus and methods for generating uninterruptible AC power signals |
US5532525A (en) * | 1994-06-02 | 1996-07-02 | Albar, Inc. | Congeneration power system |
US5760495A (en) * | 1995-02-22 | 1998-06-02 | Alpha Technologies, Inc. | Inverter/charger circuit for uninterruptible power supplies |
US9633781B2 (en) | 2010-02-18 | 2017-04-25 | Alpha Technologies Inc. | Ferroresonant transformer for use in uninterruptible power supplies |
US20110198932A1 (en) * | 2010-02-18 | 2011-08-18 | Alpha Technologies Inc. | Ferroresonant transformer for use in uninterruptible power supplies |
US8575779B2 (en) | 2010-02-18 | 2013-11-05 | Alpha Technologies Inc. | Ferroresonant transformer for use in uninterruptible power supplies |
US10819144B2 (en) | 2010-02-18 | 2020-10-27 | Alpha Technologies Services, Inc. | Ferroresonant transformer for use in uninterruptible power supplies |
US9030045B2 (en) | 2011-01-23 | 2015-05-12 | Alpha Technologies Inc. | Switching systems and methods for use in uninterruptible power supplies |
US9812900B2 (en) | 2011-01-23 | 2017-11-07 | Alpha Technologies Inc. | Switching systems and methods for use in uninterruptible power supplies |
US10103571B2 (en) | 2011-01-23 | 2018-10-16 | Alpha Technologies Inc. | Uninterruptible power supplies for use in a distributed network |
US10355521B2 (en) | 2011-01-23 | 2019-07-16 | Alpha Technologies Services, Inc. | Switching systems and methods for use in uninterruptible power supplies |
US9234916B2 (en) | 2012-05-11 | 2016-01-12 | Alpha Technologies Inc. | Status monitoring cables for generators |
US10074981B2 (en) | 2015-09-13 | 2018-09-11 | Alpha Technologies Inc. | Power control systems and methods |
US10790665B2 (en) | 2015-09-13 | 2020-09-29 | Alpha Technologies Services, Inc. | Power control systems and methods |
US10381867B1 (en) | 2015-10-16 | 2019-08-13 | Alpha Technologeis Services, Inc. | Ferroresonant transformer systems and methods with selectable input and output voltages for use in uninterruptible power supplies |
US10635122B2 (en) | 2017-07-14 | 2020-04-28 | Alpha Technologies Services, Inc. | Voltage regulated AC power supply systems and methods |
Also Published As
Publication number | Publication date |
---|---|
FR839857A (fr) | 1939-04-13 |
FR816510A (fr) | 1937-08-10 |
GB441825A (en) | 1936-01-27 |
DE733857C (de) | 1943-04-03 |
US2153329A (en) | 1939-04-04 |
NL42754C (xx) | 1938-03-15 |
GB508816A (en) | 1939-07-06 |
BE412432A (xx) | 1935-12-31 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US2037183A (en) | Carrier line power supply | |
US2756414A (en) | Coupling unit | |
US3414688A (en) | Communication system having level control means for repeaters connected along a transmission cable | |
US2522402A (en) | Negative resistance repeater system | |
US2159927A (en) | Neutralization of inductive interference | |
US2208617A (en) | Signal transmission system | |
US2294735A (en) | Carrier current amplifier apparatus | |
US2138613A (en) | Signaling system | |
US2003967A (en) | Signaling and power supply system | |
US1891190A (en) | System of electrical distribution | |
US2089179A (en) | Coaxial transmission system | |
US1855303A (en) | Multiple coaxial conductor system | |
US2282377A (en) | Control means for railway train communication apparatus | |
US2326871A (en) | Gain control | |
US1950127A (en) | Communication system | |
US1894656A (en) | Hum elimination system | |
US1561227A (en) | Carrier-current signaling system | |
US3414687A (en) | Transmission system having a plurality of separate parallel transmission lines and common control of intermediate repeater stations in the transmission lines | |
US2851529A (en) | Monitoring device in carrier-wave telephone transmissions | |
US3483336A (en) | Disabling device for the alternating-current path of a two-wire transmission syste | |
US2020875A (en) | Energization and control of amplifiers | |
US2147688A (en) | Magnetic impulse storing device | |
US2201983A (en) | Power supply circuit | |
US1516519A (en) | Electrical transformer | |
US2531498A (en) | Wayside station line coupling means for train communication systems |