DK70575A - - Google Patents
Info
- Publication number
- DK70575A DK70575A DK70575*#A DK70575A DK70575A DK 70575 A DK70575 A DK 70575A DK 70575 A DK70575 A DK 70575A DK 70575 A DK70575 A DK 70575A
- Authority
- DK
- Denmark
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/01—Frequency selective two-port networks
- H03H7/06—Frequency selective two-port networks including resistors
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/01—Frequency selective two-port networks
- H03H7/17—Structural details of sub-circuits of frequency selective networks
- H03H7/1741—Comprising typical LC combinations, irrespective of presence and location of additional resistors
- H03H7/1766—Parallel LC in series path
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/46—Networks for connecting several sources or loads, working on different frequencies or frequency bands, to a common load or source
- H03H7/463—Duplexers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S3/00—Systems employing more than two channels, e.g. quadraphonic
- H04S3/006—Systems employing more than two channels, e.g. quadraphonic in which a plurality of audio signals are transformed in a combination of audio signals and modulated signals, e.g. CD-4 systems
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/01—Frequency selective two-port networks
- H03H7/075—Ladder networks, e.g. electric wave filters
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Filters And Equalizers (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
- Networks Using Active Elements (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2135674 | 1974-02-25 | ||
| JP2135674A JPS5515885B2 (ro) | 1974-02-25 | 1974-02-25 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DK70575A true DK70575A (ro) | 1975-10-27 |
| DK144047B DK144047B (da) | 1981-11-23 |
| DK144047C DK144047C (da) | 1982-04-26 |
Family
ID=12052803
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK70575A DK144047C (da) | 1974-02-25 | 1975-02-24 | Sammensat filterkredsloeb |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US3944755A (ro) |
| JP (1) | JPS5515885B2 (ro) |
| AT (1) | AT349232B (ro) |
| DK (1) | DK144047C (ro) |
| FI (1) | FI750509A (ro) |
| NO (1) | NO143858C (ro) |
| SE (1) | SE410372B (ro) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4152550A (en) * | 1976-10-21 | 1979-05-01 | Victor Company Of Japan, Ltd. | Apparatus for reproducing a multichannel record disc |
| US5027426A (en) * | 1989-07-07 | 1991-06-25 | Chiocca Jr Joseph J | Signal coupling device and system |
| US5045821A (en) * | 1989-11-03 | 1991-09-03 | Motorola, Inc. | Broadband multi-phase hybrid |
| US20050162140A1 (en) * | 2004-01-23 | 2005-07-28 | Mark Hirst | Apparatus including switching circuit |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3201716A (en) * | 1961-03-28 | 1965-08-17 | Bell Telephone Labor Inc | Plural channel switching system with impedance of on gate and off gates forming a bandpass filter |
| FR1352223A (fr) * | 1963-01-02 | 1964-02-14 | Radiotechnique | Filtre de bande à quatre circuits accordés, notamment pour télévision |
| US3325753A (en) * | 1963-04-19 | 1967-06-13 | Int Research & Dev Co Ltd | Band pass filter |
| US3843850A (en) * | 1970-06-26 | 1974-10-22 | Victor Co Ltd | Four channel record reproducing apparatus with muting of speakers not used for stereo or monaural records |
-
1974
- 1974-02-25 JP JP2135674A patent/JPS5515885B2/ja not_active Expired
-
1975
- 1975-02-18 US US05/550,376 patent/US3944755A/en not_active Expired - Lifetime
- 1975-02-20 AT AT128875A patent/AT349232B/de not_active IP Right Cessation
- 1975-02-24 FI FI750509A patent/FI750509A/fi not_active Application Discontinuation
- 1975-02-24 NO NO750613A patent/NO143858C/no unknown
- 1975-02-24 DK DK70575A patent/DK144047C/da not_active IP Right Cessation
- 1975-02-24 SE SE7502022A patent/SE410372B/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DK144047C (da) | 1982-04-26 |
| NO143858B (no) | 1981-01-12 |
| SE410372B (sv) | 1979-10-08 |
| NO143858C (no) | 1981-04-22 |
| ATA128875A (de) | 1978-08-15 |
| FI750509A (ro) | 1975-08-26 |
| SE7502022L (ro) | 1975-08-26 |
| NO750613L (ro) | 1975-08-26 |
| DK144047B (da) | 1981-11-23 |
| JPS5515885B2 (ro) | 1980-04-26 |
| JPS50115950A (ro) | 1975-09-10 |
| AT349232B (de) | 1978-08-15 |
| US3944755A (en) | 1976-03-16 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PBP | Patent lapsed |