FR2417908A1 - Switch matrix for telephone exchange - has each switch controlled by electrically independent coils arranged in columns and rows - Google Patents
Switch matrix for telephone exchange - has each switch controlled by electrically independent coils arranged in columns and rowsInfo
- Publication number
- FR2417908A1 FR2417908A1 FR7804388A FR7804388A FR2417908A1 FR 2417908 A1 FR2417908 A1 FR 2417908A1 FR 7804388 A FR7804388 A FR 7804388A FR 7804388 A FR7804388 A FR 7804388A FR 2417908 A1 FR2417908 A1 FR 2417908A1
- Authority
- FR
- France
- Prior art keywords
- switch
- columns
- rows
- coils
- controlled
- 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.)
- Withdrawn
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
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
Abstract
The switch matrix has a number of two-position switches whose contacts are sealed in an envelope. Each switch is controlled by electrically first and second independent coils. The first coil has two halves wound in opposite sense to magnetic respective contacts of the switch. The first coils are in columns each including a selection relay coil. The second coils are connected in lines with each column controlled by a selection relay. Energising one column of the first coils opens the column switches and closes the selection relay. Energising one line cancels half of the first coil and closes switch.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7804388A FR2417908A1 (en) | 1978-02-16 | 1978-02-16 | Switch matrix for telephone exchange - has each switch controlled by electrically independent coils arranged in columns and rows |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7804388A FR2417908A1 (en) | 1978-02-16 | 1978-02-16 | Switch matrix for telephone exchange - has each switch controlled by electrically independent coils arranged in columns and rows |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2417908A1 true FR2417908A1 (en) | 1979-09-14 |
Family
ID=9204663
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7804388A Withdrawn FR2417908A1 (en) | 1978-02-16 | 1978-02-16 | Switch matrix for telephone exchange - has each switch controlled by electrically independent coils arranged in columns and rows |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2417908A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113490325A (en) * | 2015-11-13 | 2021-10-08 | 舍弗勒技术股份两合公司 | Multilayer circuit board with printed coils and method for producing same |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1243731B (en) * | 1965-09-30 | 1967-07-06 | Telefonbau | Switching matrix for switching through one of several input lines to one of several output lines of a telecommunications system, in particular a telephone exchange |
-
1978
- 1978-02-16 FR FR7804388A patent/FR2417908A1/en not_active Withdrawn
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1243731B (en) * | 1965-09-30 | 1967-07-06 | Telefonbau | Switching matrix for switching through one of several input lines to one of several output lines of a telecommunications system, in particular a telephone exchange |
Non-Patent Citations (1)
Title |
---|
EXBK/73 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113490325A (en) * | 2015-11-13 | 2021-10-08 | 舍弗勒技术股份两合公司 | Multilayer circuit board with printed coils and method for producing same |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |