ZA76507B - Tunable resonant circuit especially half-wave line resonant circuit for at least two frequency bands - Google Patents
Tunable resonant circuit especially half-wave line resonant circuit for at least two frequency bandsInfo
- Publication number
- ZA76507B ZA76507B ZA507A ZA76507A ZA76507B ZA 76507 B ZA76507 B ZA 76507B ZA 507 A ZA507 A ZA 507A ZA 76507 A ZA76507 A ZA 76507A ZA 76507 B ZA76507 B ZA 76507B
- Authority
- ZA
- South Africa
- Prior art keywords
- resonant circuit
- frequency bands
- wave line
- tunable
- especially half
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J5/00—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner
- H03J5/24—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with a number of separate pretuned tuning circuits or separate tuning elements selectively brought into circuit, e.g. for waveband selection or for television channel selection
- H03J5/242—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with a number of separate pretuned tuning circuits or separate tuning elements selectively brought into circuit, e.g. for waveband selection or for television channel selection used exclusively for band selection
- H03J5/244—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with a number of separate pretuned tuning circuits or separate tuning elements selectively brought into circuit, e.g. for waveband selection or for television channel selection used exclusively for band selection using electronic means
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J3/00—Continuous tuning
- H03J3/02—Details
- H03J3/16—Tuning without displacement of reactive element, e.g. by varying permeability
- H03J3/18—Tuning without displacement of reactive element, e.g. by varying permeability by discharge tube or semiconductor device simulating variable reactance
- H03J3/185—Tuning without displacement of reactive element, e.g. by varying permeability by discharge tube or semiconductor device simulating variable reactance with varactors, i.e. voltage variable reactive diodes
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2503785A DE2503785C3 (de) | 1975-01-30 | 1975-01-30 | Kombituner für die Frequenzbereiche UHF und VHF |
Publications (1)
Publication Number | Publication Date |
---|---|
ZA76507B true ZA76507B (en) | 1977-01-26 |
Family
ID=5937679
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ZA507A ZA76507B (en) | 1975-01-30 | 1976-01-29 | Tunable resonant circuit especially half-wave line resonant circuit for at least two frequency bands |
Country Status (5)
Country | Link |
---|---|
DE (1) | DE2503785C3 (no) |
FI (1) | FI760198A (no) |
NZ (1) | NZ179794A (no) |
SE (1) | SE402037B (no) |
ZA (1) | ZA76507B (no) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2371821A1 (fr) * | 1976-10-25 | 1978-06-16 | Indesit | Dispositif d'accord pour recepteur de television |
JPS6043696B2 (ja) * | 1978-03-15 | 1985-09-30 | 三洋電機株式会社 | Vhfチユ−ナの段間同調結合回路 |
DE3317219A1 (de) * | 1983-05-11 | 1984-11-15 | Telefunken electronic GmbH, 7100 Heilbronn | Eingangsschaltung mit wenigstens zwei eingangswegen |
DE3321262A1 (de) * | 1983-06-11 | 1984-12-13 | Telefunken electronic GmbH, 7100 Heilbronn | Abstimmschaltung fuer die bereiche uhf- und vhf |
US4567523A (en) * | 1983-12-05 | 1986-01-28 | North American Philips Consumer Electronics Corp. | Television receiver input circuit |
US4593257A (en) * | 1985-02-28 | 1986-06-03 | Rca Corporation | Multiband local oscillator |
US4598423A (en) * | 1985-02-28 | 1986-07-01 | Rca Corporation | Tuning circuit for a multiband tuner |
DE3509517A1 (de) * | 1985-03-16 | 1986-09-25 | Philips Patentverwaltung Gmbh, 2000 Hamburg | Schaltungsanordnung fuer einen tuner zur umschaltung zweier frequenzbaender |
-
1975
- 1975-01-30 DE DE2503785A patent/DE2503785C3/de not_active Expired
-
1976
- 1976-01-20 NZ NZ179794A patent/NZ179794A/xx unknown
- 1976-01-28 FI FI760198A patent/FI760198A/fi not_active Application Discontinuation
- 1976-01-29 SE SE7600961A patent/SE402037B/xx unknown
- 1976-01-29 ZA ZA507A patent/ZA76507B/xx unknown
Also Published As
Publication number | Publication date |
---|---|
AU1033676A (en) | 1977-07-21 |
DE2503785B2 (de) | 1977-06-16 |
SE7600961L (sv) | 1976-08-02 |
DE2503785A1 (de) | 1976-08-05 |
DE2503785C3 (de) | 1984-07-12 |
NZ179794A (en) | 1978-03-06 |
SE402037B (sv) | 1978-06-12 |
FI760198A (no) | 1976-07-31 |
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