JPS398275B1 - - Google Patents
Info
- Publication number
- JPS398275B1 JPS398275B1 JP1542661A JP1542661A JPS398275B1 JP S398275 B1 JPS398275 B1 JP S398275B1 JP 1542661 A JP1542661 A JP 1542661A JP 1542661 A JP1542661 A JP 1542661A JP S398275 B1 JPS398275 B1 JP S398275B1
- Authority
- JP
- Japan
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
-
- 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
- H03K17/80—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used using non-linear magnetic devices; using non-linear dielectric devices
-
- 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
- H03K17/80—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used using non-linear magnetic devices; using non-linear dielectric devices
- H03K17/82—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used using non-linear magnetic devices; using non-linear dielectric devices the devices being transfluxors
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/22—Arrangements for supervision, monitoring or testing
- H04M3/2272—Subscriber line supervision circuits, e.g. call detection circuits
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Magnetic Treatment Devices (AREA)
- Measuring Magnetic Variables (AREA)
- Monitoring And Testing Of Exchanges (AREA)
- Interface Circuits In Exchanges (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US26758A US3175042A (en) | 1960-05-04 | 1960-05-04 | Monitoring gate circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS398275B1 true JPS398275B1 (enExample) | 1964-05-22 |
Family
ID=21833632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1542661A Pending JPS398275B1 (enExample) | 1960-05-04 | 1961-05-04 |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US3175042A (enExample) |
| JP (1) | JPS398275B1 (enExample) |
| BE (1) | BE603392A (enExample) |
| DE (1) | DE1438234B2 (enExample) |
| FR (1) | FR1288546A (enExample) |
| GB (1) | GB980704A (enExample) |
| NL (2) | NL136573C (enExample) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3524933A (en) * | 1967-09-14 | 1970-08-18 | Automatic Elect Lab | Line circuit scanner for electronic telephone systems |
| US3671759A (en) * | 1970-09-02 | 1972-06-20 | Northern Electric Co | Magnetic sensor |
| US3899644A (en) * | 1974-06-19 | 1975-08-12 | Data Time | AC/DC-monitoring telephone line ringing voltage detector |
| US4118597A (en) * | 1975-06-23 | 1978-10-03 | Proctor & Associates Company | Method and apparatus for detecting direct currents in a transmission line |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2805407A (en) * | 1953-07-30 | 1957-09-03 | Bell Telephone Labor Inc | Magnetic register |
| US2938129A (en) * | 1958-01-21 | 1960-05-24 | Clarence B House | Variable frequency magnetic multivibrator |
| US3024447A (en) * | 1958-08-06 | 1962-03-06 | Gen Electric | Core signal translating devices |
| US2976472A (en) * | 1960-01-04 | 1961-03-21 | Bell Telephone Labor Inc | Magnetic control circuits |
-
0
- NL NL264401D patent/NL264401A/xx unknown
- NL NL136573D patent/NL136573C/xx active
-
1960
- 1960-05-04 US US26758A patent/US3175042A/en not_active Expired - Lifetime
-
1961
- 1961-04-27 DE DE19611438234 patent/DE1438234B2/de active Pending
- 1961-05-01 GB GB15676/61A patent/GB980704A/en not_active Expired
- 1961-05-04 BE BE603392A patent/BE603392A/fr unknown
- 1961-05-04 FR FR860810A patent/FR1288546A/fr not_active Expired
- 1961-05-04 JP JP1542661A patent/JPS398275B1/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| NL264401A (enExample) | |
| FR1288546A (fr) | 1962-03-24 |
| DE1438234A1 (de) | 1968-12-19 |
| BE603392A (fr) | 1961-09-01 |
| US3175042A (en) | 1965-03-23 |
| DE1438234B2 (de) | 1971-12-30 |
| NL136573C (enExample) | |
| GB980704A (en) | 1965-01-20 |