DE1081072B - Shortwave receiver - Google Patents
Shortwave receiverInfo
- Publication number
- DE1081072B DE1081072B DEP2146D DEP0002146D DE1081072B DE 1081072 B DE1081072 B DE 1081072B DE P2146 D DEP2146 D DE P2146D DE P0002146 D DEP0002146 D DE P0002146D DE 1081072 B DE1081072 B DE 1081072B
- Authority
- DE
- Germany
- Prior art keywords
- shortwave
- tuning
- changed
- ranges
- receiver
- 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.)
- Pending
Links
- 238000001228 spectrum Methods 0.000 description 4
- 239000003990 capacitor Substances 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 241000158147 Sator Species 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F21/00—Variable inductances or transformers of the signal type
- H01F21/02—Variable inductances or transformers of the signal type continuously variable, e.g. variometers
- H01F21/06—Variable inductances or transformers of the signal type continuously variable, e.g. variometers by movement of core or part of core relative to the windings as a whole
- H01F21/065—Measures for obtaining a desired relation between the position of the core and the inductance
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J3/00—Continuous tuning
- H03J3/02—Details
- H03J3/10—Circuit arrangements for fine tuning, e.g. bandspreading
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
Description
DEUTSCHESGERMAN
Die Erfindung bezieht sich auf einen Kurzwellenempfänger, der über mehrere verhältnismäßig breite Kurzwellenbereiche stetig abstimmbar ist und außerdem zwecks Abstimmungserleichterung an Stellen großer Stationsdichte (Rundfunkbändern) mit Bandspreizung arbeiten kann; bei Bandspreizungsabstimmung in den verhältnismäßig schmalen Rundfunkbändern werden dabei die Scheinwiderstände der bei der stetigen Abstimmung unverändert bleibenden Abstimmittel mit Hilfe besonderer Feinabstimmittel um relativ geringe Beträge geändert. Dies hat den Vorteil, daß für jedes der zu spreizenden Rundfunkbänder die gleiche Abstimmgenauigkeit erzielt wird, und zwar weil das Verhältnis der Feinabstimmittel zu den unveränderlichen Abstimmitteln des Schwingungs- 1S kreises unverändert bleibt.The invention relates to a shortwave receiver which can be continuously tuned over several relatively wide shortwave ranges and which can also work with a spread spectrum to facilitate tuning at locations with a high density of stations (radio bands); In the case of spread spectrum tuning in the relatively narrow radio bands, the apparent resistances of the tuning means, which remain unchanged in the continuous tuning, are changed by relatively small amounts with the help of special fine tuning means. This has the same tuning accuracy is obtained for each of the to be spread broadcast bands, namely because the ratio of fine tune means to the tuning means of the steady oscillation circuit 1 S remains unchanged the advantage.
Wenn ein solcher Empfänger auf mehrere verhältnismäßig breite Kurzwellenbereiche abstimmbar ist, wobei der Wechsel dieser Kurzwellenbereiche durch Umschaltung der unveränderlichen Abstimmittel erfolgt, wird bei dieser Umschaltung im allgemeinen gleichzeitig das obenerwähnte Verhältnis zu den Feinabstimmitteln geändert. Wenn die zu spreizenden Rundfunkbänder über die verschiedenen breiteren Kurzwellenbereiche verteilt sind, ist die Abstimm- a5 genauigkeit in den einzelnen Bändern dann nicht mehr die gleiche.If such a receiver can be tuned to several relatively wide shortwave ranges, the change of these shortwave ranges being carried out by switching over the invariable tuning means, the above-mentioned ratio to the fine tuning means is generally changed at the same time during this switchover. If the broadcast bands to be spread are distributed over the various broader shortwave ranges , the tuning accuracy in the individual bands is then no longer the same.
Die Erfindung hat den Zweck, diesen Nachteil zu vermeiden und die gleichbleibende Abstimmgenauigkeit wenigstens annähernd wiederherzustellen.The invention has the purpose of avoiding this disadvantage and the consistent tuning accuracy at least approximately to restore.
Erfindungsgemäß wird beim Wechsel der verhältnismäßig breiten Kurzwellenbereiche gleichzeitig die Größe bzw. der Regelbereich der besonderen Feinabstimmittel zwecks Anpassung an den jeweiligen Wert der bei der stetigen Abstimmung unverändert bleibenden Abstimmittel geändert.According to the invention, when changing the relatively wide shortwave ranges, the Size or the control range of the special fine-tuning means for the purpose of adapting to the respective value the voting means, which remain unchanged in the continuous voting, have been changed.
Es war bereits ein Empfänger bekannt, bei dem in verschiedenen Rundfunkbändern eine Bandspreizung durchgeführt wurde, zu welchem Zweck für jedes dieser Bänder ein besonderer Satz von Drehkondensatoren vorgesehen war, welcher bei der Wahl des betreffenden Bandes abwechselnd eingeschaltet wurde. Dabei erfolgt zwar eine Umschaltung der Feinabstimmittel, jedoch nicht wie bei der Erfindung gleichzeitig mit dem Wechsel breiterer Kurzwellenbereiche.A receiver was already known in which a spread spectrum was used in different radio bands was carried out, for which purpose a special set of variable capacitors for each of these bands was provided, which was switched on alternately when the relevant band was selected. The fine-tuning means are switched over, but not at the same time as in the invention with the change of broader shortwave ranges.
Die Erfindung wird an Hand der Zeichnung näher erläutert.The invention is explained in more detail with reference to the drawing.
In der Zeichnung ist ein Schwingungskreis 1 dargestellt, welcher in zwei Kurzwellenbereichen abstimmbar ist und gleichzeitig in jedem dieser Kurz- 5t> Wellenbereiche für Bandspreizungsempfang eingerichtet ist.In the drawing, an oscillating circuit 1 is shown, which can be tuned in two short-wave ranges is and at the same time set up in each of these short wave ranges for spread spectrum reception is.
In der gezeichneten Stellung wird der Schwingungskreis durch einen veränderlichen Abstimmkonden- KurzwellenempfängerIn the position shown, the oscillation circuit is controlled by a variable tuning capacitor Shortwave receiver
Anmelder:Applicant:
Philips Patentverwaltung G.m.b.H.,
Hamburg 1, Mönckebergstr. 7Philips Patentverwaltung GmbH,
Hamburg 1, Mönckebergstr. 7th
Anträge nach. Gesetz Nr. 8 AHK sind gestelltRequests after. Law No. 8 AHK are provided
und vor der Schiedskommission für Güter, Rechteand before the Arbitration Commission for Goods, Rights
und Interessen in Deutschland anhängigand interests in Germany pending
Theodorus Antonius Spoor, Eindhoven (Niederlande), ist als Erfinder genannt wordenTheodorus Antonius Spoor, Eindhoven (Netherlands), has been named as the inventor
sator 2, eine feste Selbstinduktionsspule 3 und eine für Bandspreizung dienende veränderliche Selbstinduktionsspule 4 gebildet. Zwischen die Spulen 3 und 4 sind zwei mechanisch gekuppelte, in Reihe geschaltete Schalter 5 und 6 geschaltet. Die mechanische Kupplung ist durch eine punktierte Linie 7 schematisch dargestellt.Sator 2, a fixed self-induction coil 3 and a variable self-induction coil serving for band spreading 4 formed. Between the coils 3 and 4 are two mechanically coupled, connected in series Switches 5 and 6 switched. The mechanical coupling is shown schematically by a dotted line 7 shown.
Wenn die beiden Schalter 5 und 6 umgeschaltet werden, wird die Spule 3 ausgeschaltet und eine kleinere Spule 8 mit einem Teil der veränderlichen Selbstinduktionsspule 4 in Reihe geschaltet. Zu diesem Zweck ist an der Spule 4 eine Anzapfung 9 vorgesehen, welche mit einem Kontakt des Schalters 6 in Verbindung steht.When the two switches 5 and 6 are switched, the coil 3 is switched off and one smaller coil 8 connected in series with part of the variable self-induction coil 4. To this Purpose, a tap 9 is provided on the coil 4, which with a contact of the switch 6 in Connection.
Die Anzapfung 9 wird derart gewählt, daß die mit der Spule 4 erhaltene prozentuale Änderung der Gesamtinduktivität des Schwingungskreises 1 in den beiden Stellungen des Schalters annähernd die gleiche ist.The tap 9 is selected in such a way that the percentage change in the total inductance obtained with the coil 4 of the oscillating circuit 1 is approximately the same in the two positions of the switch.
Die Schalter 5 und 6 können einen Teil des Wellenlängenumschalters bilden, welcher im Empfänger bereits für die Umschaltung auf den Zwischen- und Langwellenbereich vorhanden ist.The switches 5 and 6 can be part of the wavelength switch form, which is already available in the receiver for switching to the intermediate and long wave ranges.
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEP2146D DE1081072B (en) | 1938-10-13 | 1939-06-28 | Shortwave receiver |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE536412X | 1938-10-13 | ||
DE2285029X | 1939-06-22 | ||
DE2252100X | 1939-06-28 | ||
DEP2146D DE1081072B (en) | 1938-10-13 | 1939-06-28 | Shortwave receiver |
Publications (1)
Publication Number | Publication Date |
---|---|
DE1081072B true DE1081072B (en) | 1960-05-05 |
Family
ID=32096473
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEP2146D Pending DE1081072B (en) | 1938-10-13 | 1939-06-28 | Shortwave receiver |
Country Status (6)
Country | Link |
---|---|
US (2) | US2252100A (en) |
BE (1) | BE440362A (en) |
DE (1) | DE1081072B (en) |
FR (3) | FR860823A (en) |
GB (1) | GB536412A (en) |
NL (1) | NL64971C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5302415A (en) * | 1992-12-08 | 1994-04-12 | E. I. Du Pont De Nemours And Company | Electroless plated aramid surfaces and a process for making such surfaces |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE442583A (en) * | 1940-08-28 | |||
DE761144C (en) * | 1941-01-27 | 1952-11-10 | Telefunken Gmbh | Receiver with spread spectrum in the shortwave range |
DE976578C (en) * | 1941-04-11 | 1963-12-05 | Siemens Ag | Variometer arrangement with different variation ranges |
NL57804C (en) * | 1941-07-01 | |||
DE952184C (en) * | 1942-03-14 | 1956-11-15 | Lorenz C Ag | Receiver with permeability adjustment by moving iron cores for band spreading |
US2424506A (en) * | 1942-10-24 | 1947-07-22 | Rca Corp | Permeability-tuned short-wave spread-band receiver |
DE963884C (en) * | 1949-03-04 | 1957-05-16 | Siemens Ag | Circuit for frequency adjustment |
DE933346C (en) * | 1950-10-21 | 1955-09-22 | Siemens Ag | Variometer with movable iron core, especially for shortwave band spreading in radio equipment |
DE864894C (en) * | 1951-03-15 | 1953-01-29 | Saba Gmbh | Device for fine tuning of high-frequency oscillation circuits, preferably for radio equipment |
DE902265C (en) * | 1951-11-20 | 1954-01-21 | Oskar Vierling Dr | Voting arrangement and construction of small receivers |
DE4012265A1 (en) * | 1990-04-17 | 1991-10-24 | Toepholm & Westermann | CIRCUIT ARRANGEMENT FOR AN OUTPUT TANK CIRCUIT OF A TRANSMITTER END STAGE OPERATED WITH FREQUENCY REVERSING |
-
0
- NL NL64971D patent/NL64971C/xx active
- BE BE440362D patent/BE440362A/xx unknown
-
1939
- 1939-06-28 DE DEP2146D patent/DE1081072B/en active Pending
- 1939-10-10 GB GB27623/39A patent/GB536412A/en not_active Expired
- 1939-10-12 FR FR860823D patent/FR860823A/en not_active Expired
-
1940
- 1940-05-09 US US334113A patent/US2252100A/en not_active Expired - Lifetime
- 1940-05-11 US US334499A patent/US2285029A/en not_active Expired - Lifetime
-
1941
- 1941-02-15 FR FR51420D patent/FR51420E/en not_active Expired
- 1941-02-18 FR FR51427D patent/FR51427E/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5302415A (en) * | 1992-12-08 | 1994-04-12 | E. I. Du Pont De Nemours And Company | Electroless plated aramid surfaces and a process for making such surfaces |
US5422142A (en) * | 1992-12-08 | 1995-06-06 | E. I. Du Pont De Nemours And Company | Process for making electroless plated aramid fibrids |
Also Published As
Publication number | Publication date |
---|---|
BE440362A (en) | |
US2252100A (en) | 1941-08-12 |
US2285029A (en) | 1942-06-02 |
FR51427E (en) | 1942-06-24 |
FR860823A (en) | 1941-01-24 |
FR51420E (en) | 1942-06-24 |
NL64971C (en) | |
GB536412A (en) | 1941-05-14 |
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