DE548384C - Receiver circuit for waves of different sizes - Google Patents
Receiver circuit for waves of different sizesInfo
- Publication number
- DE548384C DE548384C DE1930548384D DE548384DD DE548384C DE 548384 C DE548384 C DE 548384C DE 1930548384 D DE1930548384 D DE 1930548384D DE 548384D D DE548384D D DE 548384DD DE 548384 C DE548384 C DE 548384C
- Authority
- DE
- Germany
- Prior art keywords
- circuit
- tube
- waves
- receiver circuit
- receiving
- 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.)
- Expired
Links
- 230000001172 regenerating effect Effects 0.000 claims 2
- 230000003321 amplification Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/16—Circuits
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D11/00—Super-regenerative demodulator circuits
- H03D11/02—Super-regenerative demodulator circuits for amplitude-modulated oscillations
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Amplifiers (AREA)
- Superheterodyne Receivers (AREA)
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
- Circuits Of Receivers In General (AREA)
Description
Es kommt bei SpezialVorrichtungen in der Hochfrequenztechnik vor, daß es notwendig ist, in einem Empfänger zwei oder mehrere sehr verschiedene Wellenbänder aufnehmen zu können, z. B. die Bänder 1000 bis 2000 m und 3 bis 6 m. Bekanntlich ist es schwer, einen Hochfrequenzverstärker zu bauen, der für diese beiden Wellenbänder gleichzeitig funktioniert.It happens with special devices in high frequency technology that it is necessary is to record two or more very different wavebands in one receiver to be able to, e.g. B. the bands 1000 to 2000 m and 3 to 6 m. As is well known, it is difficult to to build a high frequency amplifier that handles these two wavebands simultaneously functions.
to Bis jetzt wurde deshalb diese Aufgabe in der Weise gelöst, daß man für die beiden Bereiche zwei getrennte Empfänger nahm, die höchstens den Niederfrequenzverstärker gemeinsam hatten. Der Kurzwellenempfänger war dann im allgemeinen nach dem Superregenerativprinzip aufgebaut, während für den Langwellenempfang ein Superheterodyne- oder Neutrodynverstärker Anwendung fand.So up to now this task has been solved in such a way that one for the two Areas took two separate receivers, at most the low frequency amplifier had in common. The shortwave receiver was then generally constructed according to the super-regenerative principle, while a superheterodyne or neutrodyne amplifier application for long wave reception found.
Gemäß der Erfindung werden diese beiden Empfänger in solcher Weise in einen zusammengefaßt, daß der Verlust an Verstärkung, der entsteht, wenn man umschaltet von der Superregenerativschaltung auf die andere Schaltung, teilweise wieder ausgeglichen wird, indem das abgeschaltete Pendelfrequenzrohr in der anderen Schaltung eine neue Funktion, z. B. die eines Hoohfrequenzverstärkerrohres, übernimmt. Ein schematisches Ausführungsbeispiel zeigt Abb. 1. Hierin ist 1 die Langwellenantenne und 2 die Kurzwellenantenne, diese beiden Antennen können unter Umständen identisch sein.According to the invention, these two receivers are combined into one in such a way that that the loss of gain that occurs when switching from the super-regenerative circuit to the other circuit, partially balanced again is, by the switched off pendulum frequency tube in the other circuit a new function, z. B. that of a high frequency amplifier tube, takes over. A schematic embodiment is shown in Fig. 1. Here, 1 is the long wave antenna and 2 the shortwave antenna, these two antennas may be identical.
Die langen Wellen werden empfangen, indem die Röhren 3 und 4 als Hochfrequenzverstärker arbeiten.The long waves are received by using tubes 3 and 4 as high frequency amplifiers work.
Die kurzen Wellen werden empfangen, wenn die Schalter 5 und 6 geschlossen sind. Durch Schalter 5 wird ein Rückkopplungskon densator 10 eingeschaltet, wodurch das Rohr 4 in seiner normalen, langen Welle ins Schwingen gerät. Das Rohr 3 kann dann abgeschaltet werden. Die vom Rohr 4 erzeugte Schwingung arbeitet nun als Pendelfrequenz durch die Kurzwellendrossel 8 hindurch auf das Gitter der Röhren. Die Kurzwellenantenne 2 ist mit dem Kreise 7 gekoppelt und das ankommende Zeichen schaukelt sidhi also in diesem Kreise durch die periodische Entdämpfung infolge der Pendelfrequenz zu solchen großen Amplituden auf, daß die zwei fehlenden Stufen Hochfrequenzverstärkung, welche bei der Langwellenschaltung wirksam sind, wieder wettgemacht werden.The short waves are received when switches 5 and 6 are closed. By switch 5 a Rückkopplungskon capacitor 10 is turned on, whereby the Tube 4 starts to oscillate in its normal, long wave. The tube 3 can then be switched off. The oscillation generated by the pipe 4 now works as a pendulum frequency through the short wave choke 8 onto the grid of the tubes. the Shortwave antenna 2 is coupled to circle 7 and the incoming character sways sidhi through this circle the periodic undamping due to the pendulum frequency to such large amplitudes on that the two missing stages high-frequency amplification, which are effective in the long-wave circuit, again be made up for.
Eine Kurzwellendrossel 9 sorgt dafür, daß die kurzen Wellen nicht in den Niederfrequenzverstärker eindringen.A short-wave choke 9 ensures that the short waves do not enter the low-frequency amplifier penetration.
Es ist selbstverständlich, daß die in Abb. 1 dargestellte Anordnung auf viele Weise abgeändert werden kann. Man könnte z. B. den Lanigwellenempfang durch Anwendung einer Audionrückkopplung noch verbessern. Auch braucht der gezeichnete Hochfrequenz-Verstärker nicht direkt an die Antenne 1 angeschlossen zu sein, sondern der Verstärker könnte auch als Mittelfrequenzverstärker in einem Superheterodyneempfänger eingebaut sein. "It will be understood that the arrangement shown in Fig. 1 can be modified in many ways can be. One could e.g. B. Lanigwellenempfang through application an audio feedback. Also needs the drawn high-frequency amplifier not to be connected directly to antenna 1, but to the amplifier could also be built into a superheterodyne receiver as a medium frequency amplifier be. "
Claims (2)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE548384T | 1930-02-26 | ||
| DE373570X | 1931-02-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE548384C true DE548384C (en) | 1932-04-11 |
Family
ID=34436163
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE1930548384D Expired DE548384C (en) | 1930-02-26 | 1930-02-26 | Receiver circuit for waves of different sizes |
Country Status (6)
| Country | Link |
|---|---|
| US (2) | US1897735A (en) |
| AT (1) | AT125887B (en) |
| DE (1) | DE548384C (en) |
| FR (2) | FR709545A (en) |
| GB (2) | GB357913A (en) |
| NL (1) | NL31058C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1014587B (en) * | 1955-02-26 | 1957-08-29 | Koerting Radio Werke G M B H | Switchable multipurpose oscillator in combined radio and television sets |
-
0
- NL NL31058D patent/NL31058C/xx active
-
1930
- 1930-02-26 DE DE1930548384D patent/DE548384C/en not_active Expired
- 1930-12-30 AT AT125887D patent/AT125887B/en active
-
1931
- 1931-01-16 FR FR709545D patent/FR709545A/en not_active Expired
- 1931-01-21 GB GB2093/31A patent/GB357913A/en not_active Expired
- 1931-02-18 US US516571A patent/US1897735A/en not_active Expired - Lifetime
- 1931-10-01 US US566197A patent/US1981374A/en not_active Expired - Lifetime
- 1931-10-14 FR FR40874D patent/FR40874E/en not_active Expired
-
1932
- 1932-02-19 GB GB5058/32A patent/GB373570A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1014587B (en) * | 1955-02-26 | 1957-08-29 | Koerting Radio Werke G M B H | Switchable multipurpose oscillator in combined radio and television sets |
Also Published As
| Publication number | Publication date |
|---|---|
| GB373570A (en) | 1932-05-26 |
| GB357913A (en) | 1931-10-01 |
| US1897735A (en) | 1933-02-14 |
| FR40874E (en) | 1932-09-16 |
| NL31058C (en) | |
| FR709545A (en) | 1931-08-07 |
| US1981374A (en) | 1934-11-20 |
| AT125887B (en) | 1931-12-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE548384C (en) | Receiver circuit for waves of different sizes | |
| DE437542C (en) | Circuit arrangement for the purposes of high-frequency telephony and telegraphy with cathode ray tubes | |
| DE878975C (en) | Arrangement for triggering a process after receiving a high-frequency wave train of a given minimum duration | |
| DE464227C (en) | Method of receiving unattenuated waves using multiple step amplification | |
| AT154225B (en) | Arrangement for wireless two-way traffic. | |
| DE927159C (en) | Transmitter output stage for a single sideband multi-channel connection | |
| AT119212B (en) | Circuit for radio receivers. | |
| DE624512C (en) | Receiver for receiving wireless messages | |
| DE706648C (en) | High frequency receiver | |
| AT102486B (en) | Selective receiving circuit with low susceptibility to interference for telecommunications systems. | |
| DE694201C (en) | Receiving system connected to several antennas that are effective in only one frequency range | |
| DE574010C (en) | Radio receiver for receiving medium and long waves | |
| DE546153C (en) | Directional receiver | |
| DE1006904B (en) | Mixing stage of an overlay receiver for the VHF range | |
| DE716293C (en) | Radio receiver for several wavebands | |
| AT156945B (en) | Overlay Receiver. | |
| DE830967C (en) | Two-stage reflex receiver | |
| DE703728C (en) | Device for wireless reception with automatic fading compensation and manually operated volume control | |
| DE461948C (en) | Receiving arrangement, consisting of a multiple tube with resistance coupling and built-in coupling elements for high frequency amplification in connection with a multiple tube for low frequency amplification | |
| DE307681C (en) | ||
| AT160739B (en) | Amplification circuit for modulated high frequency. | |
| DE623111C (en) | Method for achieving one-button operation with overlay receivers | |
| AT153609B (en) | Band filter with adjustable bandwidth. | |
| DE433602C (en) | Arrangement for interference-free reception in wireless telegraphy | |
| AT253075B (en) | Variable capacitor |