US1917403A - Repeater - Google Patents

Repeater Download PDF

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Publication number
US1917403A
US1917403A US579357A US57935731A US1917403A US 1917403 A US1917403 A US 1917403A US 579357 A US579357 A US 579357A US 57935731 A US57935731 A US 57935731A US 1917403 A US1917403 A US 1917403A
Authority
US
United States
Prior art keywords
relay
impulse
outgoing line
contact
line
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
US579357A
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English (en)
Inventor
Stich Johannes
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.)
Siemens and Halske AG
Siemens AG
Original Assignee
Siemens AG
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
Application filed by Siemens AG filed Critical Siemens AG
Application granted granted Critical
Publication of US1917403A publication Critical patent/US1917403A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H04Q1/30—Signalling arrangements; Manipulation of signalling currents
    • H04Q1/32—Signalling arrangements; Manipulation of signalling currents using trains of dc pulses

Definitions

  • the present invention relates to a circuit arrangement for transmission of impulses in telephone systems with automatic operation.
  • the loop normally extends over the windings of a choke coil or the like on the outgoing side of the impulse repeater and that this choke coil is short-circuited during impulsing to improve the impulse transmission. This frequently gives rise to the occurrences that the impulse receiving relay, upon the completion of an impulse series, is influenced by induced impulses caused by the whole choke coil being connected up, thus bringing about faulty connections.
  • the object of the present invention is to eliminate this drawback in a simple manner, this according to the invention being accomplished by the con trol devices which are required to set up the connection and which are influenced while an impulse series is being transmitted, being caused, after the impulse series has completed its operation, to connect up the windings of the choke coil stage by stage so as to bridge the outgoing leads.
  • relay V1 the junction line VL is seized in some manner or other the bridging relay S, as usual, will be energized, causing relay V1 to respond over earth, battery, relay V1, contact 13, by opening contact 88 and closing contact 18.
  • Relay Vl closes contact 2421 so that the following circuit is set up: earth, contact 2121, relay V2, relay V1, battery, earth. Due to the short-circuit at contact 18, relay V1 only is able to actuate its contacts. If the subscriber who has seized the junction line VL now sends out impulses, relay S will be deenergized in accordance with the interruptions of the impulse series. The impulses received by relay S are transmitted at contact 78 to relay A in known manner.
  • Relay V1 When relay S releases at the first interruption of the impulse series, the contact 18 will be opened and contact 88 closed. This removes the short-circuit for relay V2 with the result that it is energized.
  • Relay V1 by reason of its slow action, is not deenergized due to the short-circuit of relay V1 at contact 88 since this contact is reopened before relay V1 is due to release, a fresh circuit being set up for relay V1 over contact 18.
  • Relay V2 is not influenced even by its short circuit at contact 15* or by the further interruptions of the impulse series as it too operates as aslow-acting relay. The two relays V2 and V1, therefore, remain energized during the impulse series.
  • Contacts 4122 and 512 of relay V2 are ad usted so that on the operation of the relay contact 4112 is closed shortly after the armature starts its stroke whereas contact 5712 is not closed until the armature has nearly com pleted its stroke. Similarly, upon the release of the relay, contact 5 02 is opened shortly after the armature of the relay starts its return to normal while contact 402 is not closed until the armature has nearly reached.
  • VVhen relay S remains permanently energized at the end of the lmpulse series, contact 18 also remains permanently closed, and,
  • relay V2 consequently keeps relay V2 'short-circuited.
  • Relay V2 releases at the end of the impulse series whereas relay V1 still remains energized over earth, battery, relay V1,
  • an impulse repeater an incoming and an outgoing line, an impedance comprising a plurality of sections normally bridged across said outgoing line, means responsive to impulses received over said incoming line for repeating like impulses over said outgoing line, and means for short-circuiting said impedance during each impulse train and for successively reconnecting the sections of said impedance across said outgoing line, one aft-er the other, at the termination of the impulse train.
  • an impulse repeater an incoming and an outgoing line, an impedance comprisfor repeating like impulses over said outgoing line, and means for successively SllOlt-Clfcuiting the sections or" said impedance, one
  • an impulse repeater an incoming and an outgoing line, a repeating relay bridged across said incoming line, an impedance bridged across said outgoing line, said impedance being divided into a plurality of sections, a slow acting relay operated during each impulse series to short-circuit said impedance, and means controlled by said relay when it releases at the end of an impulse series for successively reconnecting the sections of said impedance across said outgoing line, one after the other.
  • an incoming and an outgoing line coupled by condensers, a direct current bridge across said outgoing line comprising a plurality of impedances, means responsive to impulses received over said incoming line for repeating said impulses over said outgoin line, and means effective during each impulse series for disconnecting said outgoing line from said condensers and for short-circuiting said impedance bridge, said means being also eilective at the end of each impulse series to successively reconnect said impedances across said outgoing line, one after the other.
  • an impulse repeater an incoming and an outgoing line, a plurality of impedances normally bridges across said outgoing line, means responsive to impulses received over said incoming line for repeating said impulses over said outgoing line, a slow acting relay operated at the beginning of each impulse series to short-circuit said impedances for the duration of the series, and contacts on said relay for successively connecting said impedances across the outgoing line, one after the other, when said relay releases at the termination of the impulse series.
  • an impulse repeater an incoming line and an outgoing line coupled by condensers, a plurality of impedances bridged across said outgoing line, a repeating relay bridged across said incoming line and responsive to impulses to repeat the same over said outgoing line, a slow acting relay operated at the beginning of each impulse series and remaining operated throughout the series, and cont-acts on said slow acting relay to disconnecting said outgoing line from said condensers and short-circuiting said impedances when the relay is operated, and for reconnecting said outgoing line to said condensers and successively reconnecting said impedances across said outgoing line, one at a time, when the relay releases at the termination of the impulse series.
  • an incoming line and an outgoing line means responsive to impulses received over said incoming line for repeating like impulses over said outgoing line, a relay operated throughout each impulse series, and means controlled by said relay at the end of each impulse series for bridging impedances across said outgoing line and for subsequently increasing such impedance.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Interface Circuits In Exchanges (AREA)
US579357A 1931-03-02 1931-12-07 Repeater Expired - Lifetime US1917403A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1917403X 1931-03-02
DES97081D DE592681C (de) 1931-03-02 1931-03-03 Schaltungsanordnung zur Stromstossuebertragung in Fernsprechanlagen

Publications (1)

Publication Number Publication Date
US1917403A true US1917403A (en) 1933-07-11

Family

ID=25998086

Family Applications (1)

Application Number Title Priority Date Filing Date
US579357A Expired - Lifetime US1917403A (en) 1931-03-02 1931-12-07 Repeater

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US (1) US1917403A (de)
DE (1) DE592681C (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2502820A (en) * 1946-07-08 1950-04-04 Bell Telephone Labor Inc Private branch exchange system with means for preventing interference from unbalanceconditions
US2563311A (en) * 1944-06-02 1951-08-07 Comp Generale Electricite Antidistortion device for receiving and retransmitting impulses
US2597869A (en) * 1946-11-30 1952-05-27 Standard Telephones Cables Ltd Impulse repeater for metered automatic telephone service

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2563311A (en) * 1944-06-02 1951-08-07 Comp Generale Electricite Antidistortion device for receiving and retransmitting impulses
US2502820A (en) * 1946-07-08 1950-04-04 Bell Telephone Labor Inc Private branch exchange system with means for preventing interference from unbalanceconditions
US2597869A (en) * 1946-11-30 1952-05-27 Standard Telephones Cables Ltd Impulse repeater for metered automatic telephone service

Also Published As

Publication number Publication date
DE592681C (de) 1934-02-12

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