US1796071A - High-frequency repeater - Google Patents

High-frequency repeater Download PDF

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Publication number
US1796071A
US1796071A US443908A US44390830A US1796071A US 1796071 A US1796071 A US 1796071A US 443908 A US443908 A US 443908A US 44390830 A US44390830 A US 44390830A US 1796071 A US1796071 A US 1796071A
Authority
US
United States
Prior art keywords
circuit
oscillations
anode
frequency
grid
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
Application number
US443908A
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English (en)
Inventor
John L Woodworth
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
General Electric Co
Original Assignee
General Electric Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to FR659308D priority Critical patent/FR659308A/fr
Priority to FR36834D priority patent/FR36834E/fr
Priority to FR38031D priority patent/FR38031E/fr
Priority to FR38178D priority patent/FR38178E/fr
Application filed by General Electric Co filed Critical General Electric Co
Priority to US443908A priority patent/US1796071A/en
Application granted granted Critical
Publication of US1796071A publication Critical patent/US1796071A/en
Priority to FR40100D priority patent/FR40100E/fr
Priority to DEA61551D priority patent/DE667299C/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/54—Systems for transmission via power distribution lines
    • H04B3/58—Repeater circuits
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
    • H02J13/00007—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using the power network as support for the transmission
    • H02J13/00009—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using the power network as support for the transmission using pulsed signals
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
    • Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
    • Y04S40/121—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using the power network as support for the transmission

Definitions

  • My invention relates to high frequency repeaters, and it has for one of its objects to provide a repeater which is particularly adapted to repeat high frequency oscillations which are transmitted over the lines of the usual power distribution system for control purposes.
  • Another object of the invention is to provide a repeater employing one or more electron discharge devices which may be supplied with operating electromotive force of commercial frequency and which has greater output energy than may be had from discharge devices of the same rated capacity when connected in known repeater circuit arrangements.
  • a further object of the invention is to provide a repeater of the type indicated which is particularly adapted for repeating carrier current signals between power lines which do not permit of carrier signaling at the same frequency, the repeater being adapted to change the frequency of the repeated signals.
  • a repeater for receiving oscillations from an input channel 2 and for supplying oscillations of increased amplitude to an output channel 3.
  • the channels 2 and 3 may be either the same or different lines of a power distribution system.
  • the channel 2 is c0upled by means of coupling condensers 4 to the input circuit 5 of the repeater.
  • the channel 3 is coupled through condensers 6 to the output circuit 7 of the repeater.
  • the repeater comprises an electron discharge device 8, the anode and grid of which are energized with alternating electromotive force supplied respectively from the sec- 1930. Serial No. 443,908.
  • This transformer may be supplied With electromotive force of any suitable commercial frequency as, for example, electromotive force derived from either of the channels 2 and
  • the third secondary winding 12 on transformer 11 is utilized to energize the oathode of the discharge device and the midpoint of this Winding is connected to both of the inner terminals of the windings 9 and 10.
  • the anode and grid are supplied with operating electromotive forces which are in opposed phase relation.
  • the anode circuit of the discharge device includes, in addition to the Winding 9, an oscillatory circuit 13 and a relay 14.
  • the grid circuit includes a winding 15 and a tuned circuit 16.
  • the winding 15 is coupled to the oscillatory circuit 13 and comprises a feed back coil whereby energy is fed from the anode circuit into the grid circuit thereby to cause the discharge device to produce oscillations having a frequency determined by the circuit 13.
  • the output circuit 7 is also coupled to the winding 13, and hence oscillations produced in the circuit 13 are supplied to the winding 7 and hence to the outgoing channel 3.
  • the Winding 10 serves to cause the grid to be negative during the half cycle of the alternating current wave in which the anode is positive.
  • the potential of this winding is sufficient noruiaily to prevent the production of oscillations in the tuned circuit 13.
  • this electromotivo force will partially overcome the effect of electromotive force of the winding 10, and thus trigger the device into oscillations, these oscillations being supplied to the channel 3.
  • the circuit may be adjusted to extreme sensitivity to received oscillations. That is, in response to a received signal of relatively small intensity the system may be triggered into oscillation, and
  • the ill then supply high frequency currents of relatively large amplitude to the output circuit.
  • the ratio between the amplitude of the input and output waves may be greater when the discharge device is connected in a circuit as described, than is the case with a discharge device having the same rated capacity connected in known circuit arrangements to amplify the received signals.
  • the sensitivity of the system is dependent to a certain extent upon the range of variations in the low frequency voltage which maycocour in any particular installation of the equipment.
  • a repeater of the type described may be located at one of these points having a relay 14.- included in the anode circuit of the discharge device.
  • Zhen high frequency oscillations are received in the input circuit 5 and the device is thereby triggered into oscillations, the anode current of the discharge device substantially increases.
  • the relay 1% may thus be adjusted to respond to this increase in anode current.
  • This relay may be employed to perform any desired control function at the point at which the repeater is located.
  • the high frequency oscillations produced will be su pplied to the outgoing channel 3 which may extend to the next point at which it is desired to produce a control operation.
  • the oscillatory circuit 13 may be tuned to the frequency of the received oscillations, or to any other suitable frequency, as desired.
  • the device comprises a very convenient means for repeating from one distribution system to another where the characteristics of the two systems to not permit the use of carrier waves of the same frequency upon the two systems.
  • the circuit 13 may be tuned to a harmonic of the received oscillations or to some frequency with which the received oscillations are modulated. Since, due to the negative potential impressed upon the grid when the anode is positive, the device Soperates as a detector oscillations of a modulation frequency will be set up in the circuit 13 and supplied to the outgoing channel. In this way the frequency of the oscillations produced may be controlled within certain limits, dependent upon the tuning of the circuit 13, from the station at which the operator is located.
  • Fig. 2 I have shown an arrangement in which high frequency oscillations may be supplied to the outgoing channel during both half cycles of the alternating current wave.
  • the system comprises two electron discharge devices 17 and 18 having separate sources of electromotive force comprising the secondary windings of transformers l9 and 20. An intermediate point on each of these secondary windings is connected to the cathode. Opposite points on the secondary winding of transformer 19 are connected respectively to the two grids, and opposite points on the secondary winding of transformer 20 are connected respectively to the two anodes.
  • connection between the cathodes ofthe dis.- charge devices 17 and 18 and the intermediate point on the secondary winding of transformer 20 includes the relay 1 1 and the oscillatory circuit 13, this circuit being coupled to the output circuit 7 and also to the feedback coil 15.
  • the coil 15 is included in the connection between the cathodes and the intermediate point on the secondary winding of transformer 19.
  • This latter connection also includes the tuned circuit 16 which is tuned to the received oscillations and coupled to the input circuit 5.
  • the transformers 19 and 20 the anodes of the two discharge devices are energized in opposite phase and the grid of each device energized in opposite phase with respect to the respective anode.
  • each device oscillates during the half cycle in which its respective anode is positive. nately thereby to supply high frequency oscillations to the channel 3 substantially continuously.
  • the cathodes of the discharge devices are energized through a transformer 21.
  • the primary windings of the transformers 19, 20 and 21 may be supplied in parallel from a distribution circuit 22 which may in turn be supplied from the power distribution system over which the carrier waves are transmitted or received.
  • a trap circuit 28, 24 is provided in each of the conductors of the power line to. isolate the two channels with respect to high frequency currents. These circuits may be tuned either to the frequency of the received or transmitted oscillations or to an intermediate frequency. These trap circuits, however, may be obviated where the two channels are connected by high impedance power apparatus such as a transformer VVhile'I have disclosed particular embodiments of my invention, it will of course be Thusthe two devices operate alterunderstood that I do not wish to be limited thereto since many modifications may be made, both in the circuit arrangements and in the instrumentalities employed, and I therefore contemplate by the appended claims to cover any such modifications as fall within the true spirit and scope of my invention.
  • said incoming channel whereby received high frequency electromotive force may be applied to said grid to overcome the low frequency electromotive force applied thereto thereby to cause said device to produce oscillations and a coupling between the anode circuit and said outgoing channel whereby high frequency oscillations are supplied to said outgoing channel.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Ac-Ac Conversion (AREA)
US443908A 1930-04-12 1930-04-12 High-frequency repeater Expired - Lifetime US1796071A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
FR659308D FR659308A (fr) 1930-04-12 1928-05-26 Perfectionnements aux systèmes de commande à distance de relais par courants porteurs
FR36834D FR36834E (fr) 1930-04-12 1929-04-17 Perfectionnements aux systèmes de commande à distance de relais par courants porteurs
FR38031D FR38031E (fr) 1930-04-12 1930-02-26 Perfectionnements aux systèmes de commande à distance de relais par courants porteurs
FR38178D FR38178E (fr) 1930-04-12 1930-03-26 Perfectionnements aux systèmes de commande à distance de relais par courants porteurs
US443908A US1796071A (en) 1930-04-12 1930-04-12 High-frequency repeater
FR40100D FR40100E (fr) 1930-04-12 1931-04-10 Perfectionnements aux systèmes de commande à distance de relais par courants porteurs
DEA61551D DE667299C (de) 1930-04-12 1931-04-14 Einrichtung zum Empfang und zur Weitergabe von laengs Kraftleitungen uebertragenen Stromzeichen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US443908A US1796071A (en) 1930-04-12 1930-04-12 High-frequency repeater

Publications (1)

Publication Number Publication Date
US1796071A true US1796071A (en) 1931-03-10

Family

ID=23762670

Family Applications (1)

Application Number Title Priority Date Filing Date
US443908A Expired - Lifetime US1796071A (en) 1930-04-12 1930-04-12 High-frequency repeater

Country Status (3)

Country Link
US (1) US1796071A (fr)
DE (1) DE667299C (fr)
FR (5) FR659308A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3263182A (en) * 1965-02-12 1966-07-26 Detrex Chem Ind Pulsed radio-frequency generator

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE722815C (de) * 1935-10-27 1942-07-22 Aeg Traegerstromtelefoniesystem mit zwei Traegerstroemen und Zwischenverstaerkerstationen
US4475209A (en) * 1982-04-23 1984-10-02 Westinghouse Electric Corp. Regenerator for an intrabundle power-line communication system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3263182A (en) * 1965-02-12 1966-07-26 Detrex Chem Ind Pulsed radio-frequency generator

Also Published As

Publication number Publication date
FR38031E (fr) 1931-03-03
FR40100E (fr) 1932-04-20
FR36834E (fr) 1930-09-20
FR38178E (fr) 1931-04-21
FR659308A (fr) 1929-06-27
DE667299C (de) 1938-11-08

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