DE2131136B2 - Schaltung zum abstimmen von schwingkreisen - Google Patents
Schaltung zum abstimmen von schwingkreisenInfo
- Publication number
- DE2131136B2 DE2131136B2 DE19712131136 DE2131136A DE2131136B2 DE 2131136 B2 DE2131136 B2 DE 2131136B2 DE 19712131136 DE19712131136 DE 19712131136 DE 2131136 A DE2131136 A DE 2131136A DE 2131136 B2 DE2131136 B2 DE 2131136B2
- Authority
- DE
- Germany
- Prior art keywords
- vibrant
- tuning
- circuits
- circuit
- vibrant circuits
- 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.)
- Ceased
Links
Classifications
-
- 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
- H03J7/10—Modification of automatic frequency control sensitivity or linearising automatic frequency control operation
-
- 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
- H03J5/02—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 variable tuning element having a number of predetermined settings and adjustable to a desired one of these settings
- H03J5/0209—Discontinuous tuning using an electrical variable impedance element, e.g. a voltage variable reactive diode, by selecting the corresponding analogue value between a set of non preset values
-
- 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
- H03J7/12—Combination of automatic frequency control voltage with stabilised varactor supply voltage
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5568270 | 1970-06-25 | ||
JP5568370A JPS5121288B1 (de) | 1970-06-25 | 1970-06-25 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE2131136A1 DE2131136A1 (de) | 1971-12-30 |
DE2131136B2 true DE2131136B2 (de) | 1973-01-11 |
Family
ID=26396586
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19712131136 Ceased DE2131136B2 (de) | 1970-06-25 | 1971-06-23 | Schaltung zum abstimmen von schwingkreisen |
Country Status (4)
Country | Link |
---|---|
US (1) | US3750028A (de) |
CA (1) | CA925968A (de) |
DE (1) | DE2131136B2 (de) |
GB (1) | GB1357379A (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2221773C2 (de) * | 1972-05-04 | 1979-04-05 | Loewe Opta Gmbh, 1000 Berlin | Schaltung zum Anschalten gespeicherter konstanter elektrischer Abstinunspanniingen für die Festsenderwahl in Geraten der Nachrichtentechnik |
US3914696A (en) * | 1974-01-18 | 1975-10-21 | Rca Corp | Controllable reference supply for television tuners |
US4100578A (en) * | 1977-05-03 | 1978-07-11 | Admiral Corporation | AFT summing circuit for varactor-type tuning systems |
US4234962A (en) * | 1979-09-17 | 1980-11-18 | Gte Products Corporation | Automatic AFT defeat circuit |
JP3141900B2 (ja) * | 1992-04-07 | 2001-03-07 | ソニー株式会社 | Afc回路及びそのic |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3487311A (en) * | 1966-11-16 | 1969-12-30 | Us Army | Transceiver with tunable phase locked oscillator and tuning voltage generator |
GB1232202A (de) * | 1967-08-14 | 1971-05-19 | ||
US3505620A (en) * | 1968-11-27 | 1970-04-07 | Gen Instrument Corp | Presettable television channel tuner using variable capacitor and variable capacitance diodes |
-
1971
- 1971-06-21 GB GB2904171A patent/GB1357379A/en not_active Expired
- 1971-06-21 US US00154980A patent/US3750028A/en not_active Expired - Lifetime
- 1971-06-23 DE DE19712131136 patent/DE2131136B2/de not_active Ceased
- 1971-06-24 CA CA116552A patent/CA925968A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US3750028A (en) | 1973-07-31 |
GB1357379A (en) | 1974-06-19 |
DE2131136A1 (de) | 1971-12-30 |
CA925968A (en) | 1973-05-08 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
BHV | Refusal |