GB1072718A – Improvements relating to coordinate switches
– Google Patents
GB1072718A – Improvements relating to coordinate switches
– Google Patents
Improvements relating to coordinate switches
Info
Publication number
GB1072718A
GB1072718A
GB31864/65A
GB3186465A
GB1072718A
GB 1072718 A
GB1072718 A
GB 1072718A
GB 31864/65 A
GB31864/65 A
GB 31864/65A
GB 3186465 A
GB3186465 A
GB 3186465A
GB 1072718 A
GB1072718 A
GB 1072718A
Authority
GB
United Kingdom
Prior art keywords
gate
semi
conductor
layer
strips
Prior art date
1964-07-24
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
GB31864/65A
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.)
1964-07-24
Filing date
1965-07-26
Publication date
1967-06-21
1965-07-26
Application filed by Telefonaktiebolaget LM Ericsson AB
filed
Critical
Telefonaktiebolaget LM Ericsson AB
1967-06-21
Publication of GB1072718A
publication
Critical
patent/GB1072718A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
Classifications
H—ELECTRICITY
H04—ELECTRIC COMMUNICATION TECHNIQUE
H04Q—SELECTING
H04Q3/00—Selecting arrangements
H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker
H04Q3/52—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker using static devices in switching stages, e.g. electronic switching arrangements
H04Q3/521—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker using static devices in switching stages, e.g. electronic switching arrangements using semiconductors in the switching stages
H—ELECTRICITY
H03—ELECTRONIC CIRCUITRY
H03K—PULSE TECHNIQUE
H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
H03K17/002—Switching arrangements with several input- or output terminals
H—ELECTRICITY
H03—ELECTRONIC CIRCUITRY
H03K—PULSE TECHNIQUE
H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
H03K17/70—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices having only two electrodes and exhibiting negative resistance
Abstract
1,072,718. Electric selectors; semi-conductor switches. TELEFONAKTIEBOLAGET L. M. ERICSSON. July 26, 1965 [July 24, 1964], No. 31864/65. Headings H1K and H1L. [Also in Divisions H3 and H4] The switching elements in a co-ordinate switching matrix comprise semi-conductor devices which have a high or low resistance depending upon whether a setting current fed thereto is removed slowly or quickly. Such elements may, as described in Specification 1,070,411, be of the type which fuse when a given current is exceeded and return to a high-resistance amorphous or low resistance crystalline state depending upon whether the current is removed rapidly or slowly. The construction may comprise a base layer 7 (Fig. 3) carrying conductive strips X1-X10 coated with the semi-conductor material. This is covered by an insulating layer (3) (Fig. 2, not shown), a conductive screening layer 4 and a further insulating layer 5 carrying on its outer surface conductive strips Y1-Y10 arranged transversely to the strips X1-X10. Connections are made through apertures between the semi-conductor layer and the strips Y at each cross point, the connections not making contact with the screening layer. The telecommunication switching matrix circuit shown in Fig. 4 provides connections between LE and LK. To establish a connection a half-current pulse is applied to a gate GY under the control of a logic circuit STY and a slightly larger pulse via a gate GX under the control of a logic circuit STX. Gate GY is now opened and a slowly falling signal is applied from circuit A, the switching circuit path being completed by one of diodes D1-Dn. To break the connection a square current pulse is applied via the GX gate only from unit B.
GB31864/65A
1964-07-24
1965-07-26
Improvements relating to coordinate switches
Expired
GB1072718A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
SE900364
1964-07-24
Publications (1)
Publication Number
Publication Date
GB1072718A
true
GB1072718A
(en)
1967-06-21
Family
ID=20275580
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB31864/65A
Expired
GB1072718A
(en)
1964-07-24
1965-07-26
Improvements relating to coordinate switches
Country Status (4)
Country
Link
US
(1)
US3383472A
(en)
BE
(1)
BE667264A
(en)
GB
(1)
GB1072718A
(en)
NL
(1)
NL6509506A
(en)
Cited By (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
DE2011851A1
(en)
*
1969-03-13
1970-10-08
Family Cites Families (4)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US2271591A
(en)
*
1940-09-27
1942-02-03
Raymond C Hickman
Power rake
US3141067A
(en)
*
1960-11-17
1964-07-14
Lester M Spandorfer
Automatic electronic communication switching exchange
GB944211A
(en)
*
1961-02-28
US3185898A
(en)
*
1962-04-23
1965-05-25
Western Electric Co
Packaged assembly for electronic switching units
1965
1965-07-08
US
US470388A
patent/US3383472A/en
not_active
Expired – Lifetime
1965-07-22
BE
BE667264D
patent/BE667264A/xx
unknown
1965-07-22
NL
NL6509506A
patent/NL6509506A/xx
unknown
1965-07-26
GB
GB31864/65A
patent/GB1072718A/en
not_active
Expired
Cited By (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
DE2011851A1
(en)
*
1969-03-13
1970-10-08
Also Published As
Publication number
Publication date
US3383472A
(en)
1968-05-14
NL6509506A
(en)
1966-01-25
BE667264A
(en)
1965-11-16
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None