ZA74550B - An adjustable aperiodic high-frequency input stage - Google Patents
An adjustable aperiodic high-frequency input stageInfo
- Publication number
- ZA74550B ZA74550B ZA740550A ZA74550A ZA74550B ZA 74550 B ZA74550 B ZA 74550B ZA 740550 A ZA740550 A ZA 740550A ZA 74550 A ZA74550 A ZA 74550A ZA 74550 B ZA74550 B ZA 74550B
- Authority
- ZA
- South Africa
- Prior art keywords
- adjustable
- input stage
- frequency input
- aperiodic high
- aperiodic
- 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
- H03G—CONTROL OF AMPLIFICATION
- H03G1/00—Details of arrangements for controlling amplification
- H03G1/0005—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal
- H03G1/0035—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal using continuously variable impedance elements
- H03G1/0052—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal using continuously variable impedance elements using diodes
- H03G1/0058—PIN-diodes
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2304058A DE2304058C3 (de) | 1973-01-27 | 1973-01-27 | Regelbare aperiodische Hochfrequenz-Eingangsstufe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ZA74550B true ZA74550B (en) | 1974-11-27 |
Family
ID=5870151
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ZA740550A ZA74550B (en) | 1973-01-27 | 1974-01-25 | An adjustable aperiodic high-frequency input stage |
Country Status (4)
| Country | Link |
|---|---|
| DE (1) | DE2304058C3 (xx) |
| FR (1) | FR2215757B1 (xx) |
| SE (1) | SE395810B (xx) |
| ZA (1) | ZA74550B (xx) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06326628A (ja) * | 1993-05-13 | 1994-11-25 | Toshiba Corp | アンテナ入力切換回路 |
| DE9419377U1 (de) * | 1994-12-06 | 1995-02-09 | Spaun-electronic GmbH, 78224 Singen | Elektronisch veränderbares Dämpfungsglied für HF-Signale oberhalb etwa 1 MHz |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1219770A (en) * | 1967-05-26 | 1971-01-20 | Plessey Co Ltd | Improvements in or relating to variable attenuators |
-
1973
- 1973-01-27 DE DE2304058A patent/DE2304058C3/de not_active Expired
- 1973-10-24 FR FR7337831A patent/FR2215757B1/fr not_active Expired
-
1974
- 1974-01-24 SE SE7400934A patent/SE395810B/xx unknown
- 1974-01-25 ZA ZA740550A patent/ZA74550B/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| FR2215757A1 (xx) | 1974-08-23 |
| SE395810B (sv) | 1977-08-22 |
| FR2215757B1 (xx) | 1979-04-13 |
| DE2304058A1 (de) | 1974-08-01 |
| DE2304058C3 (de) | 1980-01-10 |
| DE2304058B2 (de) | 1979-05-17 |
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