JPS63149632U - - Google Patents
Info
- Publication number
- JPS63149632U JPS63149632U JP4288487U JP4288487U JPS63149632U JP S63149632 U JPS63149632 U JP S63149632U JP 4288487 U JP4288487 U JP 4288487U JP 4288487 U JP4288487 U JP 4288487U JP S63149632 U JPS63149632 U JP S63149632U
- Authority
- JP
- Japan
- Prior art keywords
- variable capacitance
- capacitance diode
- tuning control
- automatic fine
- diode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000010586 diagram Methods 0.000 description 9
- 230000003321 amplification Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
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
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
- H03J7/02—Automatic frequency control
- H03J7/04—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant
- H03J7/08—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant using varactors, i.e. voltage variable reactive diodes
Landscapes
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
- Television Receiver Circuits (AREA)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4288487U JPH0434581Y2 (sl) | 1987-03-24 | 1987-03-24 | |
GB8806714A GB2203006B (en) | 1987-03-24 | 1988-03-21 | Local oscillators |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4288487U JPH0434581Y2 (sl) | 1987-03-24 | 1987-03-24 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS63149632U true JPS63149632U (sl) | 1988-10-03 |
JPH0434581Y2 JPH0434581Y2 (sl) | 1992-08-18 |
Family
ID=12648465
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4288487U Expired JPH0434581Y2 (sl) | 1987-03-24 | 1987-03-24 |
Country Status (2)
Country | Link |
---|---|
JP (1) | JPH0434581Y2 (sl) |
GB (1) | GB2203006B (sl) |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0644185Y2 (ja) * | 1988-02-10 | 1994-11-14 | アルプス電気株式会社 | 電子同調チューナにおける局部発振回路 |
-
1987
- 1987-03-24 JP JP4288487U patent/JPH0434581Y2/ja not_active Expired
-
1988
- 1988-03-21 GB GB8806714A patent/GB2203006B/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
GB2203006B (en) | 1991-06-19 |
GB2203006A (en) | 1988-10-05 |
GB8806714D0 (en) | 1988-04-20 |
JPH0434581Y2 (sl) | 1992-08-18 |