US1831730A - Impulse current repeater - Google Patents

Impulse current repeater Download PDF

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Publication number
US1831730A
US1831730A US362048A US36204829A US1831730A US 1831730 A US1831730 A US 1831730A US 362048 A US362048 A US 362048A US 36204829 A US36204829 A US 36204829A US 1831730 A US1831730 A US 1831730A
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US
United States
Prior art keywords
relay
contact
circuit
current
impulse
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
US362048A
Other languages
English (en)
Inventor
Ahlberg Curt Fredrik
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.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson AB
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 Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Application granted granted Critical
Publication of US1831730A publication Critical patent/US1831730A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • H04Q1/36—Pulse-correcting arrangements, e.g. for reducing effects due to interference

Definitions

  • an impulse sender designates an impulse sender, by way of example a finger disk by means of which current im ulses maybe sent over a primary circuit BS for instance the subscribers line 7 containing a primary impulse relay A.
  • the latter relay controls an operating circuit of a secondary impulse relay B and also a holding circuit for an auxillary'relay C which in turn controls the circuit of a slow-acting relay D.
  • the relay B controls together with the relay D a secondary impulse circuit SS.
  • the impulse relay B is according to the invention adapted to attract its armature rapidly when actuated by a current impulse of very short duration and thereupon, to hold its armature energized during a period of time which is constant and may be arbitrarily chosen. Said period may for instance be adjusted by a suitable dimensioning of an ohmic resistance R connected in parallel with the relay coil B.
  • the relay G is a quick-acting relay
  • the relay D is a slow-acting relay which rapidly attracts its armature but only slowly releases the same. It is adjusted so as to retain its armature energized during the sending of the impulses.
  • the arrangement functions in the following manner. WVhen the primary circuit 1s closed the relay B receives a current impulse over the contact 1 on the relay A and. the contact 2 on the relay OJ
  • the relay B attracts its armature and connects itself into a current path independent. .of the former circuit over its contact 3 and the contact 4 of the relay C.
  • it closes an operating circuit for the relay C at the contact 5 which relay then connects itself into a holding circuit over the contact 6 and at the same time opens the two current paths of the relay B, viz. at the contact 2 and also at the contact 4:.
  • the relay B then de-energizes and'releases its armature after a definite period of time.
  • the relay D operates said relay having been connected into circuit over the contact'7 of the relay 0.
  • the secondary circuit SS at the contacts Sand 9 C which is thus de-energized.
  • Thecondition for attaining such a constant operation of the relay B is that the relay is supplied with a suiiicient excitation energy.
  • said special current path over the contacts 3, L is provided. It has namely to be noted that the relay B is energized already before the magnetic field has reached its full force. If now the current closing in the contact 1 should be of an insufficient length of time to enable the relay B to be fully energized by the current passing over said contact, the relay obtains an additional exciting current over the contacts 3 and t which current is sufiicient to enable the held to reach the required force. he supply of exciting current over the contacts3, a takes place during the period of time between the energization of the relays B and O which period is adequate for the purpose in question.
  • the contacts 3 and on the relay B should be so designed that the contact 3 is closed earlier than the contact 5. If this should not be the case but for instance the contact 5 be closed before the contact 3 the relay G should be able to attract its armature and would break the contact 4 too early, in which case the relay B will not obtain suflicient excitation energy.
  • Figure 3 shows the current operations in the primary circuit PS and the secondary cir cuit SS which is represented by the curves E and G respectively
  • the curve H represents the corresponding movements of the armature of the relay B.
  • the curves are arranged in relation to each other in such a manner that the portions of the curves lying vertically above each other correspond to'the same instant of time.
  • an impulse current repeater the combination of a primary circuit, a secondary circuit, an impulse repeating relay controlled from the primary circuit and controlling said secondary circuit,an intermediate circuit for the energization of the impulse repeating relay by means of current impulses controlled from the primary circuit, means at the repeating relay to break the secondary circuit upon energization of said relay, an auxiliary relay which upon being energized connects itself into a holding circuit controlled from the primary circuit and means whereby the repeating relay upon being energized connects itself into a holding circuit independent of the primary circuit, the holding circuit of the repeating relay containing a break contact of the auxiliary relay.
  • an impulse current repeater thecombination of a primary circuit, a secondary circuit, an impulse repeating relay controlled from the primary circuit and controlling said secondary circuit, an intermediate circuit for the energization of the impulse repeating relay by means of current impulses controlled from the primary circuit, means at the repeating relay to break the secondary circuit upon energization of said relay, an auxiliary relay which upon being energized connects itself into a holding circuit controlled from the primary circuit, means whereby the repeating relay upon being energized connects itself into a holding circuit independent of the primary circuit, the holding circuit of the repeating relay containing a break contact of the auxiliary relay and means Whereby the holding circuit of the auxiliary relay is controlled by the repeating relay in such a manner that it may be interrupted by the latter relay When this is de-energized.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Relay Circuits (AREA)
US362048A 1928-05-12 1929-05-10 Impulse current repeater Expired - Lifetime US1831730A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE1831730X 1928-05-12
SE674871X 1928-05-12

Publications (1)

Publication Number Publication Date
US1831730A true US1831730A (en) 1931-11-10

Family

ID=26656311

Family Applications (1)

Application Number Title Priority Date Filing Date
US362048A Expired - Lifetime US1831730A (en) 1928-05-12 1929-05-10 Impulse current repeater

Country Status (3)

Country Link
US (1) US1831730A (zh)
FR (1) FR311410A (zh)
NL (1) NL46259C (zh)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2500289A (en) * 1946-08-30 1950-03-14 Automatic Elect Lab Telephone pulse repeater actuated by break period
US2500286A (en) * 1946-08-30 1950-03-14 Automatic Elect Lab Impulse correcting repeater
US2563311A (en) * 1944-06-02 1951-08-07 Comp Generale Electricite Antidistortion device for receiving and retransmitting impulses
US2574532A (en) * 1948-01-15 1951-11-13 Stromberg Carlson Co Reverting call circuit
US2579469A (en) * 1939-03-24 1951-12-25 Int Standard Electric Corp Revertive calling party line system
US2626996A (en) * 1947-02-07 1953-01-27 Int Standard Electric Corp Conversion from direct current to double voice frequency impulsing
US3450843A (en) * 1965-11-24 1969-06-17 Bell Telephone Labor Inc Dial pulse repeating and correcting circuit
US11130041B2 (en) * 2017-11-15 2021-09-28 Jae Hwan Kim System for providing a virtual exercise place
US11452928B2 (en) 2019-07-02 2022-09-27 Jae Hwan Kim System for providing virtual exercising place

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2579469A (en) * 1939-03-24 1951-12-25 Int Standard Electric Corp Revertive calling party line system
US2563311A (en) * 1944-06-02 1951-08-07 Comp Generale Electricite Antidistortion device for receiving and retransmitting impulses
US2500289A (en) * 1946-08-30 1950-03-14 Automatic Elect Lab Telephone pulse repeater actuated by break period
US2500286A (en) * 1946-08-30 1950-03-14 Automatic Elect Lab Impulse correcting repeater
US2626996A (en) * 1947-02-07 1953-01-27 Int Standard Electric Corp Conversion from direct current to double voice frequency impulsing
US2574532A (en) * 1948-01-15 1951-11-13 Stromberg Carlson Co Reverting call circuit
US3450843A (en) * 1965-11-24 1969-06-17 Bell Telephone Labor Inc Dial pulse repeating and correcting circuit
US11130041B2 (en) * 2017-11-15 2021-09-28 Jae Hwan Kim System for providing a virtual exercise place
US11148034B2 (en) * 2017-11-15 2021-10-19 Jae Hwan Kim System for providing a virtual exercise place
US11452928B2 (en) 2019-07-02 2022-09-27 Jae Hwan Kim System for providing virtual exercising place

Also Published As

Publication number Publication date
NL46259C (zh)
FR311410A (zh)

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