BE882340A - Circuit de detection de l'etat d'un interrupteur - Google Patents
Circuit de detection de l'etat d'un interrupteurInfo
- Publication number
- BE882340A BE882340A BE0/199878A BE199878A BE882340A BE 882340 A BE882340 A BE 882340A BE 0/199878 A BE0/199878 A BE 0/199878A BE 199878 A BE199878 A BE 199878A BE 882340 A BE882340 A BE 882340A
- Authority
- BE
- Belgium
- Prior art keywords
- detecting
- switch
- circuit
- state
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/16—Indicators for switching condition, e.g. "on" or "off"
- H01H9/167—Circuits for remote indication
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/035,534 US4272725A (en) | 1979-05-03 | 1979-05-03 | Interface circuit for use with electronic control devices |
Publications (1)
Publication Number | Publication Date |
---|---|
BE882340A true BE882340A (fr) | 1980-09-22 |
Family
ID=21883309
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BE0/199878A BE882340A (fr) | 1979-05-03 | 1980-03-20 | Circuit de detection de l'etat d'un interrupteur |
Country Status (5)
Country | Link |
---|---|
US (1) | US4272725A (fr) |
BE (1) | BE882340A (fr) |
CA (1) | CA1138045A (fr) |
DE (1) | DE3016287A1 (fr) |
GB (1) | GB2049960B (fr) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2565027B1 (fr) * | 1984-05-23 | 1986-09-26 | Aerospatiale | Dispositif pour controler l'etat de contacts electriques |
US4697093A (en) * | 1985-01-23 | 1987-09-29 | Westinghouse Electric Corp. | Testable, fault-tolerant power interface circuit for controlling plant process equipment |
US4683105A (en) * | 1985-10-31 | 1987-07-28 | Westinghouse Electric Corp. | Testable, fault-tolerant power interface circuit for normally de-energized loads |
US4864285A (en) * | 1988-05-11 | 1989-09-05 | O G & E | Method and apparatus for testing contacts to determine if opened or closed |
DE4311883A1 (de) * | 1993-04-10 | 1994-10-13 | Tehalit Gmbh | EIB-Modul |
FR2704370B1 (fr) * | 1993-04-19 | 1995-07-07 | Matra Transport | Relais statique de securite pour installation de commande ou de controle. |
US6250936B1 (en) * | 1998-08-05 | 2001-06-26 | Cisco Technology, Inc. | Single-port connection and circuitry accepting both balanced and unbalanced data signals |
AT506138B1 (de) * | 2007-11-22 | 2009-11-15 | Fronius Int Gmbh | Verfahren zur erkennung der betätigung eines bedienelements einer bedienfront und bedienfront mit zumindest einem bedienelement |
CN105182173B (zh) * | 2015-08-07 | 2018-08-28 | 国网山东省电力公司淄博供电公司 | 新型组合式互感器极性测试仪 |
MX2018011236A (es) * | 2016-03-15 | 2019-05-16 | Schlumberger Technology Bv | Sistema y metodo para detectar filtraciones de corriente electrica en un sistema sismico de terrestre. |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3774106A (en) * | 1971-09-15 | 1973-11-20 | Federal Pacific Electric Co | Electrical grounding system and ground integrity checker |
US3869664A (en) * | 1973-06-08 | 1975-03-04 | Avtron Manufacturing Inc | Improved surge tester for electrical windings |
-
1979
- 1979-05-03 US US06/035,534 patent/US4272725A/en not_active Expired - Lifetime
-
1980
- 1980-03-20 BE BE0/199878A patent/BE882340A/fr unknown
- 1980-04-28 DE DE19803016287 patent/DE3016287A1/de not_active Withdrawn
- 1980-04-30 CA CA000350934A patent/CA1138045A/fr not_active Expired
- 1980-05-01 GB GB8014433A patent/GB2049960B/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US4272725A (en) | 1981-06-09 |
CA1138045A (fr) | 1982-12-21 |
GB2049960A (en) | 1980-12-31 |
GB2049960B (en) | 1983-03-09 |
DE3016287A1 (de) | 1980-11-06 |
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