DE863673C - Electrical signal receiver - Google Patents
Electrical signal receiverInfo
- Publication number
- DE863673C DE863673C DES23709A DES0023709A DE863673C DE 863673 C DE863673 C DE 863673C DE S23709 A DES23709 A DE S23709A DE S0023709 A DES0023709 A DE S0023709A DE 863673 C DE863673 C DE 863673C
- Authority
- DE
- Germany
- Prior art keywords
- signal
- circuit arrangement
- arrangement according
- relay
- frequencies
- 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
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q1/00—Details of selecting apparatus or arrangements
- H04Q1/18—Electrical details
- H04Q1/30—Signalling arrangements; Manipulation of signalling currents
- H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
- H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
- H04Q1/446—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using one signalling frequency
- H04Q1/4465—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using one signalling frequency the same frequency being used for all signalling information, e.g. A.C. nr.9 system
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Radio Relay Systems (AREA)
Description
Bei Schaltungsanordnungen Zum Empfang elektrischer Signale kann zum besseren Schutz gegen störende Spannungen, insbesondere zur Verringerung .der Sprachempfindlichkeit, vor jedem Steuersignal ein aus zwei oder mehr Frequenzen zusammengesetztes Vörsignal, ein sogenanntes Schlüsselsignal, übertragen werden, In Fig. i ist ein derartiger bekannter Signalempfänger dargestellt, der im Anodenkreis einer Verstärkerröhre drei Schwingkreise aufweist, von denen zwei, L1, Cl und L2, C2, auf die beiden Frequenzen des Schlüsselsignals und einer; L,3, C3, auf das Steuersignal abgestimmt sind. Über die Gleichrichteranordnungen Gll, G1, und rxl, werden die Empfangsrelaiswicklungen AI, BI und C, gespeist, deren Kontakte a, b und c die Signale als Gleichstromimpuls der nicht mehr dargestellten Tonfrequenzrelaisübertragung weiterleiten. Die Rückstellung der Relais erfolgt durch besondere Rückstellerregerwicklungen A ]I, BII und Ca. Der Sperrelaiskreis ist in die Abbildungen nicht aufgenommen worden. U.m eine besondere Steuerfrequenz einzusparen, könnte man an sich eine der beiden Frequenzen des Schlüsselsignals für das Steuersignal verwenden; es treten dabei jedoch Verzerrungen auf; die diese Maßnahme nicht erlauben.In circuit arrangements for receiving electrical signals, a so-called key signal, a so-called key signal, composed of two or more frequencies can be transmitted in front of each control signal for better protection against interfering voltages, in particular to reduce the speech sensitivity , which has three resonant circuits in the anode circuit of an amplifier tube, two of which, L1, Cl and L2, C2, to the two frequencies of the key signal and one; L, 3, C3, are matched to the control signal. Via the rectifier arrangements Gll, G1, and rxl, the receiving relay windings AI, BI and C, are fed, the contacts a, b and c of which transmit the signals as a direct current pulse of the audio frequency relay transmission, which is no longer shown. The relays are reset by special reset exciter windings A] I, BII and Ca. The blocking relay circuit has not been included in the figures. In order to save a special control frequency, one of the two frequencies of the key signal could be used for the control signal; however, there are distortions; who do not allow this measure.
Die Signalempfänger arbeiten mit vorzugsweise selbsttätiger Eingangspegelregelung auf konstanten Gesamtanodenwechselstromwert, so daß der Gleichstrom in den nunmehr allein vorhandenen beiden Empfangsrelais beim Einfrequenzensignal größer als beim. Zweifrequenzensignal ist. Bei Einstellung des Pegels auf das Zweifrequenzensignal folgt hieraus eine unerwünschte Verlängerung des nachfolgenden Einfrequenzensignals und umgekehrt.The signal receivers work with preferably automatic input level control to constant total anode alternating current value, so that the direct current in the now The only two receiving relays available for the single-frequency signal are greater than for the. Two-frequency signal is. When setting the level to the two-frequency signal this results in an undesirable lengthening of the subsequent single-frequency signal and vice versa.
Bei der Schaltungsanordnung gemäß der Erfindung wird diese Erscheinung dadurch ausgeglichen, daß nach dem Empfang von Spannungen zweier oder mehrerer als Schlüsselsignal dienender Frequenzen eine Umschaltung von seiten der Tonfrequenzrelaisübertragung her vorgenommen wird, wobei Mittel zur Regelung der resultierenden Amperewindungen in solch einem Sinn wirksam werden, daß für die nachfolgenden, eine der Frequenzen des Schlüsselsignals verwendenden Steuersignale ein verzerrungsfreier Signalempfang gewährleistet ist.In the circuit arrangement according to the invention, this phenomenon becomes compensated by the fact that after receiving voltages two or more than Key signal serving frequencies a switchover on the part of the audio frequency relay transmission is made forth, with means for regulating the resulting ampere-turns in such a sense that for the following, one of the frequencies of the key signal using control signals a distortion-free signal reception is guaranteed.
Bei der Schaltungsanordnung gemäß der Erfindung besteht der Vorteil des Einsparens von für eine dritte Frequenz, die Steuerfrequenz, erforderlichen Schwing-und Übertragungsmittel, ohne daß sich dabei eine Signalverzerrung ergibt.The circuit arrangement according to the invention has the advantage the saving of the necessary for a third frequency, the control frequency Vibration and transmission means without resulting in signal distortion.
Die Erfindung wird an Hand der Fig. 2, 3 und q:, die beispielsweise Schaltschemata darstellen, noch näher erläutert.The invention is illustrated with reference to FIGS. 2, 3 and q: for example Represent circuit diagrams, explained in more detail.
Die Fig: 2 zeigt nur den Schwingkreis LC des Zweifrequenzenschlüsselsignals, der für das Stcucrsignal Verwendung finden soll und über die Glcichrichteranordnung Gl das Empfangsrelais E speist. Durch Betätigung des Kontaktes k von seiten der nicht dargestellten Tonfrequenzrelaisübertragung her wird das Hilfsrelais R zur Wirkung gebracht, dessen Kontakt r den Zwischen Schwingkreis L C und Gleichrichteranordnung Gl befindlichen Spannungsteiler W1, W2 einschaltet und so die der Gleichrichteranordnung zugeführte Signalspannung herabsetzt.FIG. 2 shows only the resonant circuit LC of the two-frequency key signal which is to be used for the control signal and which feeds the receiving relay E via the rectifier arrangement Gl. By actuating the contact k on the part of the audio frequency relay transmission, not shown, the auxiliary relay R is activated, the contact r of which switches on the voltage divider W1, W2 located between the oscillating circuit LC and the rectifier arrangement Gl and thus reduces the signal voltage fed to the rectifier arrangement.
Die Fig. 3 zeigt zwei EmpfangsrelaiswicklungenA und BI mit ihren zugehörigen Rückstellerregungswicklungen A,[ und B ]I. Der Kontakt k der Tonfreqüenzrelaisübertragung schließt im Rückstellstromkreis den Vorwiderstand W kurz und erhöht somit die Rückstellerregung beider Empfangsrelais.Figure 3 shows two receive relay windings A and BI with their associated reset excitation windings A, [ and B] I. Contact k of the audio frequency relay transmission shorts the series resistor W in the reset circuit and thus increases the reset excitation of both receiving relays.
In der Anordnung nach Fig. q. wird durch die Betätigung des Ruhekontaktes k der Tonfrequenzreläisübertragung der Parallelwiderstand W abgeschaltet, so daß, da es sich z. B. bei Pentoden um eingeprägten Strom handelt, die Richtspannung im Pegelregler steigt, wodurch das Pegelniveau gesenkt wird.In the arrangement according to Fig. Q. is activated by pressing the normally closed contact k of the audio frequency relay transmission, the parallel resistor W is switched off, so that, since it is z. B. pentodes to impressed current, the directional voltage im Level control rises, which lowers the level.
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DES23709A DE863673C (en) | 1951-06-29 | 1951-06-29 | Electrical signal receiver |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DES23709A DE863673C (en) | 1951-06-29 | 1951-06-29 | Electrical signal receiver |
Publications (1)
Publication Number | Publication Date |
---|---|
DE863673C true DE863673C (en) | 1953-01-19 |
Family
ID=7477508
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DES23709A Expired DE863673C (en) | 1951-06-29 | 1951-06-29 | Electrical signal receiver |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE863673C (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE943653C (en) * | 1953-02-07 | 1956-05-24 | Siemens Ag | Method for testing the frequency-dependent residual damping of carrier frequency telephone systems without putting the channels out of operation |
DE1006474B (en) * | 1953-12-16 | 1957-04-18 | Lorenz C Ag | Selective call receiver that can be switched off |
DE1056184B (en) * | 1956-03-29 | 1959-04-30 | Int Standard Electric Corp | Signal receivers for message transmission systems for receiving signals outside the transmission band, e.g. B. Call or election signs |
DE1062747B (en) * | 1955-10-10 | 1959-08-06 | Nederlanden Staat | Method for signal transmission with carrier-frequency message transmission |
DE1095332B (en) * | 1954-04-28 | 1960-12-22 | Siemens Ag | Circuit arrangement for the delivery of a practically constant selective call voltage to the selective call receiving devices of radio equipment |
DE1134723B (en) * | 1960-07-25 | 1962-08-16 | Siemens Ag | Method and circuit arrangement for establishing connections in large telecommunications, in particular telephone networks |
-
1951
- 1951-06-29 DE DES23709A patent/DE863673C/en not_active Expired
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE943653C (en) * | 1953-02-07 | 1956-05-24 | Siemens Ag | Method for testing the frequency-dependent residual damping of carrier frequency telephone systems without putting the channels out of operation |
DE1006474B (en) * | 1953-12-16 | 1957-04-18 | Lorenz C Ag | Selective call receiver that can be switched off |
DE1095332B (en) * | 1954-04-28 | 1960-12-22 | Siemens Ag | Circuit arrangement for the delivery of a practically constant selective call voltage to the selective call receiving devices of radio equipment |
DE1062747B (en) * | 1955-10-10 | 1959-08-06 | Nederlanden Staat | Method for signal transmission with carrier-frequency message transmission |
DE1056184B (en) * | 1956-03-29 | 1959-04-30 | Int Standard Electric Corp | Signal receivers for message transmission systems for receiving signals outside the transmission band, e.g. B. Call or election signs |
DE1134723B (en) * | 1960-07-25 | 1962-08-16 | Siemens Ag | Method and circuit arrangement for establishing connections in large telecommunications, in particular telephone networks |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE3641310A1 (en) | ARRANGEMENT FOR DETERMINING AN EXTREME VALUE OF A PHYSICAL SIZE | |
DE2534310A1 (en) | NOISE REDUCTION DEVICE FOR AN FM STEREO RECEIVER | |
DE863673C (en) | Electrical signal receiver | |
DE1285576B (en) | Diversity reception method | |
DE2151048A1 (en) | Multi-frequency FM detector | |
DE3009787A1 (en) | FM CAR RADIO WITH TWO RECEIVER PARTS AND SEARCH SEARCH | |
DE69220733T2 (en) | detector | |
DE543903C (en) | Arrangement for reducing the effect of fading in the case of wireless reception by means of a plurality of antenna systems | |
DE383448C (en) | Receiving device for overlay reception | |
DE939820C (en) | Circuit arrangement for receiving voltages of one or more signal frequencies | |
DE863674C (en) | Electrical signal receiver | |
DE889016C (en) | Circuit arrangement for the simultaneous amplification of voltages of low or carrier frequency transmitted voice channels and for the reception of signal voltages | |
DE861271C (en) | Electrical signal receiver | |
DE878953C (en) | Electrical signal receiver | |
DE1438956A1 (en) | Method and circuit arrangement for wireless triggering of switching functions | |
DE538211C (en) | Method and device for wireless character transmission | |
DE2907611C2 (en) | Automatic receiver selection for radio control centers | |
AT338881B (en) | CIRCUIT ARRANGEMENT FOR A VOICE PROTECTED RECEIVING DEVICE FOR MULTI-FREQUENCY CODE SELECTION IN REMOTE COMMUNICATION DEVICES, IN PARTICULAR TELEPHONE SWITCHING SYSTEMS | |
DE862912C (en) | Electrical signal receiver | |
DE887058C (en) | Circuit arrangement for receiving voltages of one or more signal frequencies | |
EP0256506B1 (en) | Transmission system with balanced lines | |
DE670674C (en) | Method for interference-free character transmission, especially for wireless purposes | |
AT145345B (en) | Switching arrangement for the simultaneous reception of two different carrier oscillations, between which there is a constant frequency difference. | |
DE680895C (en) | Method for displaying more than two, preferably three, low-frequency signals | |
DE844918C (en) | Electrical signal receiver |