NL215808A - - Google Patents
Info
- Publication number
- NL215808A NL215808A NL215808DA NL215808A NL 215808 A NL215808 A NL 215808A NL 215808D A NL215808D A NL 215808DA NL 215808 A NL215808 A NL 215808A
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/738—Interface circuits for coupling substations to external telephone lines
- H04M1/74—Interface circuits for coupling substations to external telephone lines with means for reducing interference; with means for reducing effects due to line faults
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/02—Details
- H04B3/44—Arrangements for feeding power to a repeater along the transmission line
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/738—Interface circuits for coupling substations to external telephone lines
- H04M1/76—Compensating for differences in line impedance
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Amplifiers (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US1172721XA | 1956-03-29 | 1956-03-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL215808A true NL215808A (fr) |
Family
ID=22371938
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL100978D NL100978C (fr) | 1956-03-29 | ||
| NL215808D NL215808A (fr) | 1956-03-29 |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL100978D NL100978C (fr) | 1956-03-29 |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE555288A (fr) |
| DE (1) | DE1096424B (fr) |
| FR (1) | FR1172721A (fr) |
| NL (2) | NL215808A (fr) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE439637A (fr) * | 1939-06-10 | |||
| US2732436A (en) * | 1947-12-22 | 1956-01-24 | Frequency in cycles per second | |
| DE887956C (de) * | 1950-12-27 | 1953-08-27 | Western Electric Co | Schaltungsanordnung zur Regelung des UEbertragungspegels fuer Fernsprechteilnehmerstellen |
| DE862917C (de) * | 1951-07-12 | 1953-01-15 | Siemens Ag | Fernsprechstation mit Kohlemikrofon und Speisung vom Amt |
-
0
- NL NL100978D patent/NL100978C/xx active
- NL NL215808D patent/NL215808A/xx unknown
- BE BE555288D patent/BE555288A/xx unknown
-
1957
- 1957-02-09 DE DEW20571A patent/DE1096424B/de active Pending
- 1957-02-28 FR FR1172721D patent/FR1172721A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| BE555288A (fr) | |
| NL100978C (fr) | |
| DE1096424B (de) | 1961-01-05 |
| FR1172721A (fr) | 1959-02-13 |