BE693006A - - Google Patents
Info
- Publication number
- BE693006A BE693006A BE693006DA BE693006A BE 693006 A BE693006 A BE 693006A BE 693006D A BE693006D A BE 693006DA BE 693006 A BE693006 A BE 693006A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F29/00—Variable transformers or inductances not covered by group H01F21/00
- H01F29/14—Variable transformers or inductances not covered by group H01F21/00 with variable magnetic bias
- H01F29/146—Constructional details
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F29/00—Variable transformers or inductances not covered by group H01F21/00
- H01F29/14—Variable transformers or inductances not covered by group H01F21/00 with variable magnetic bias
- H01F2029/143—Variable transformers or inductances not covered by group H01F21/00 with variable magnetic bias with control winding for generating magnetic bias
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Signal Processing (AREA)
- Transformers For Measuring Instruments (AREA)
- Coils Or Transformers For Communication (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US52336566A | 1966-01-27 | 1966-01-27 | |
| US54545166A | 1966-04-26 | 1966-04-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE693006A true BE693006A (fi) | 1967-07-24 |
Family
ID=27061124
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE693006D BE693006A (fi) | 1966-01-27 | 1967-01-23 |
Country Status (2)
| Country | Link |
|---|---|
| US (2) | US3461247A (fi) |
| BE (1) | BE693006A (fi) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3582561A (en) * | 1969-02-11 | 1971-06-01 | Automatic Elect Lab | Permalloy film monitoring device for telephone line circuits |
| 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 (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2911631A (en) * | 1958-06-27 | 1959-11-03 | Rca Corp | Magnetic memory systems |
| US3138720A (en) * | 1962-07-30 | 1964-06-23 | Bell Telephone Labor Inc | Ferromagnetic sensing device |
| US3268878A (en) * | 1962-10-10 | 1966-08-23 | Ex Cell O Corp | Electromagnetic transducer heads |
-
1966
- 1966-01-27 US US523365A patent/US3461247A/en not_active Expired - Lifetime
- 1966-04-26 US US545451A patent/US3466402A/en not_active Expired - Lifetime
-
1967
- 1967-01-23 BE BE693006D patent/BE693006A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| US3461247A (en) | 1969-08-12 |
| US3466402A (en) | 1969-09-09 |