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GB1128583A - Improvements in or relating to electric circuit arrangements for use in telecommunications exchange systems - Google Patents

Improvements in or relating to electric circuit arrangements for use in telecommunications exchange systems

Info

Publication number
GB1128583A
GB1128583A GB2051367A GB2051367A GB1128583A GB 1128583 A GB1128583 A GB 1128583A GB 2051367 A GB2051367 A GB 2051367A GB 2051367 A GB2051367 A GB 2051367A GB 1128583 A GB1128583 A GB 1128583A
Authority
GB
United Kingdom
Prior art keywords
zener diode
uab
uan
relay
exchange systems
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
Application number
GB2051367A
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 AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
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 claimed from DES96269A external-priority patent/DE1242710B/en
Priority claimed from DES103622A external-priority patent/DE1279109B/en
Application filed by Siemens AG, Siemens Corp filed Critical Siemens AG
Publication of GB1128583A publication Critical patent/GB1128583A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/0008—Selecting arrangements using relay selectors in the switching stages
    • H04Q3/0012—Selecting arrangements using relay selectors in the switching stages in which the relays are arranged in a matrix configuration
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H63/00—Details of electrically-operated selector switches
    • H01H63/36—Circuit arrangements for ensuring correct or desired operation and not adapted to a particular application of the selector switch
    • H01H63/40—Circuit arrangements for ensuring correct or desired operation and not adapted to a particular application of the selector switch for multi-position switches without wipers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H67/00—Electrically-operated selector switches
    • H01H67/22—Switches without multi-position wipers
    • H01H67/24—Co-ordinate-type relay switches having an individual electromagnet at each cross-point
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H67/00—Electrically-operated selector switches
    • H01H67/22—Switches without multi-position wipers
    • H01H67/32—Switches without multi-position wipers having a multiplicity of interdependent armatures operated in succession by a single coil and each controlling one contact or set of contacts, e.g. counting relay

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Interface Circuits In Exchanges (AREA)

Abstract

1,128,583. Automatic exchange systems. SIEMENS A.G. 3 May, 1967 [4 May, 1966], No. 20513/67. Addition to 1, 092, 599. Heading H4K. In a switching matrix comprising a plurality of bi-stable, single winding relays which each have one end of their windings connected to an associated column conductor and their other ends connected via oppositely poled rectifiers to a pair of associated row conductors, at least one of each pair of row conductors includes a voltage threshold device. The device may be a Zener diode or a current-direction independent varistor. In Fig. 1, selective operation of e.g. relay A22 is effected by closing switches Y2 and X2 when these are connected respectively to + and -, U. In order to release A22, the same switches are operated but in this case they must be connected to - and +, U. Operation of more than one relay at a time is prevented by choosing U such that it is greater than the breakdown voltage Uz of a single Zener diode but is less than 3Uz (the latter criterion is obtained by determining the number of Zener diodes which will be encountered in the shortest path parallel to the wanted path). In Fig. 2, operation or release of a relay is effected by closing a selected X and Y switch and by connecting the common Y conductor to +Uan or -Uab respectively. Assuming the thresholds of varistors V and Zener diode Z are all equal to Uz then 2Uz > Uan = Uab > Uz. If Zener diode Z is omitted, then 2Uz > Uab > Uz > Uan.
GB2051367A 1965-03-30 1967-05-03 Improvements in or relating to electric circuit arrangements for use in telecommunications exchange systems Expired GB1128583A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DES96269A DE1242710B (en) 1965-03-30 1965-03-30 Circuit arrangement for telecommunications systems, in particular telephone exchanges, with switch panels constructed in a matrizenfoermig
DES103622A DE1279109B (en) 1966-05-04 1966-05-04 Circuit arrangement for telecommunication systems, in particular telephone exchanges with matrizenfoermig built switch panels

Publications (1)

Publication Number Publication Date
GB1128583A true GB1128583A (en) 1968-09-25

Family

ID=25998023

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2051367A Expired GB1128583A (en) 1965-03-30 1967-05-03 Improvements in or relating to electric circuit arrangements for use in telecommunications exchange systems

Country Status (1)

Country Link
GB (1) GB1128583A (en)

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