PT78720A - Sintonizador para,pelo menos,duas gamas de frequencias - Google Patents
Sintonizador para,pelo menos,duas gamas de frequenciasInfo
- Publication number
- PT78720A PT78720A PT78720A PT7872084A PT78720A PT 78720 A PT78720 A PT 78720A PT 78720 A PT78720 A PT 78720A PT 7872084 A PT7872084 A PT 7872084A PT 78720 A PT78720 A PT 78720A
- Authority
- PT
- Portugal
- Prior art keywords
- tuner
- frequencies
- range
- 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
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
- H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
- H03B5/12—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
- H03B5/1203—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device the amplifier being a single transistor
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
- H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
- H03B5/12—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
- H03B5/1231—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device the amplifier comprising one or more bipolar transistors
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
- H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
- H03B5/12—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
- H03B5/1237—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device comprising means for varying the frequency of the generator
- H03B5/124—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device comprising means for varying the frequency of the generator the means comprising a voltage dependent capacitance
- H03B5/1243—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device comprising means for varying the frequency of the generator the means comprising a voltage dependent capacitance the means comprising voltage variable capacitance diodes
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B2200/00—Indexing scheme relating to details of oscillators covered by H03B
- H03B2200/003—Circuit elements of oscillators
- H03B2200/004—Circuit elements of oscillators including a variable capacitance, e.g. a varicap, a varactor or a variable capacitance of a diode or transistor
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B2200/00—Indexing scheme relating to details of oscillators covered by H03B
- H03B2200/003—Circuit elements of oscillators
- H03B2200/0048—Circuit elements of oscillators including measures to switch the frequency band, e.g. by harmonic selection
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B2200/00—Indexing scheme relating to details of oscillators covered by H03B
- H03B2200/003—Circuit elements of oscillators
- H03B2200/0052—Circuit elements of oscillators including measures to switch the feedback circuit
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B2200/00—Indexing scheme relating to details of oscillators covered by H03B
- H03B2200/003—Circuit elements of oscillators
- H03B2200/0056—Circuit elements of oscillators including a diode used for switching
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B2201/00—Aspects of oscillators relating to varying the frequency of the oscillations
- H03B2201/02—Varying the frequency of the oscillations by electronic means
- H03B2201/0208—Varying the frequency of the oscillations by electronic means the means being an element with a variable capacitance, e.g. capacitance diode
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
- H03D7/12—Transference of modulation from one carrier to another, e.g. frequency-changing by means of semiconductor devices having more than two electrodes
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3321725A DE3321725A1 (de) | 1983-06-16 | 1983-06-16 | Tuner fuer wenigstens zwei frequenzbereiche |
Publications (2)
Publication Number | Publication Date |
---|---|
PT78720A true PT78720A (pt) | 1985-01-01 |
PT78720B PT78720B (de) | 1986-07-11 |
Family
ID=6201624
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PT78720A PT78720B (de) | 1983-06-16 | 1984-06-12 | Tuner fuer wenigstens zwei frequenzbereiche |
Country Status (9)
Country | Link |
---|---|
EP (1) | EP0129154A3 (pt) |
JP (1) | JPS6019329A (pt) |
DE (1) | DE3321725A1 (pt) |
ES (1) | ES533167A0 (pt) |
FI (1) | FI842429A (pt) |
IN (1) | IN160160B (pt) |
PT (1) | PT78720B (pt) |
YU (1) | YU103384A (pt) |
ZA (1) | ZA844169B (pt) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2580116B2 (ja) * | 1985-12-16 | 1997-02-12 | ソニー株式会社 | Ic化高周波可変周波数発振回路 |
DE3850758T2 (de) * | 1987-12-21 | 1995-03-02 | Sharp Kk | Bilderzeugungsgerät mit mehreren Bildverarbeitungsfunktionen. |
DE4340581C1 (de) * | 1993-11-29 | 1995-04-27 | Rohde & Schwarz | Frequenzconverter zum Erweitern des Grundempfangsbereiches eines Überlagerungsempfängers |
DE19612439C2 (de) * | 1996-03-28 | 2001-02-01 | Siemens Ag | Halbleiterspeichervorrichtung |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1441714A1 (de) * | 1963-04-27 | 1968-10-31 | Imp Rundfunk Und Fernsehwerk G | Abstimmeinrichtung fuer Ultra-Kurze-Wellen |
FR1449972A (fr) * | 1965-09-21 | 1966-05-06 | Telefunken Patent | Dispositif d'accord |
DE1591364B1 (de) * | 1967-04-29 | 1970-08-20 | Philips Patentverwaltung | Schaltungsanordnung zum Abstimmen |
DE2158691A1 (de) * | 1971-11-26 | 1973-05-30 | Blaupunkt Werke Gmbh | Oszillatoranordnung mit kapazitiver abstimmung und elektronischer bereichsumschaltung |
-
1983
- 1983-06-16 DE DE3321725A patent/DE3321725A1/de not_active Withdrawn
-
1984
- 1984-05-24 IN IN355/CAL/84A patent/IN160160B/en unknown
- 1984-06-04 ZA ZA844169A patent/ZA844169B/xx unknown
- 1984-06-06 ES ES533167A patent/ES533167A0/es active Granted
- 1984-06-07 EP EP84106501A patent/EP0129154A3/de not_active Withdrawn
- 1984-06-12 PT PT78720A patent/PT78720B/pt unknown
- 1984-06-13 YU YU01033/84A patent/YU103384A/xx unknown
- 1984-06-14 FI FI842429A patent/FI842429A/fi not_active Application Discontinuation
- 1984-06-15 JP JP59122188A patent/JPS6019329A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
ES8502822A1 (es) | 1985-02-01 |
JPS6019329A (ja) | 1985-01-31 |
ZA844169B (en) | 1985-01-30 |
IN160160B (pt) | 1987-06-27 |
DE3321725A1 (de) | 1984-12-20 |
EP0129154A3 (de) | 1986-04-16 |
EP0129154A2 (de) | 1984-12-27 |
PT78720B (de) | 1986-07-11 |
ES533167A0 (es) | 1985-02-01 |
FI842429A (fi) | 1984-12-17 |
FI842429A0 (fi) | 1984-06-14 |
YU103384A (en) | 1987-10-31 |
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