DE884517C - Electrical signal receiver - Google Patents
Electrical signal receiverInfo
- Publication number
- DE884517C DE884517C DES10944D DES0010944D DE884517C DE 884517 C DE884517 C DE 884517C DE S10944 D DES10944 D DE S10944D DE S0010944 D DES0010944 D DE S0010944D DE 884517 C DE884517 C DE 884517C
- Authority
- DE
- Germany
- Prior art keywords
- bias
- electrical signal
- signal receiver
- resistors
- tapped
- 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
- 230000011664 signaling Effects 0.000 claims 1
- 238000004804 winding Methods 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G11/00—Limiting amplitude; Limiting rate of change of amplitude ; Clipping in general
- H03G11/002—Limiting amplitude; Limiting rate of change of amplitude ; Clipping in general without controlling loop
-
- 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)
- Circuits Of Receivers In General (AREA)
- Amplifiers (AREA)
Description
Die Erfindung betrifft einen elektrischen Signalempfänger; bei dem beim Empfang anderer Nachrichtenfrequenzen die Signalvorrichtung durch auf diese Frequenzen ansprechende Mittel unwirksam gemacht ist, mit einer amplitudenab'hängigen Gegenkopplung über eine Anordnung von nichtlinearen, Widerständen mit negativer Gleichstromvorspannun:g nach dem Patent 87402,3. Die negative Vorspannung wurde bei der Anordnung nach dem Patent 874023 angewandt, um die Arbeitskurve der Regelung steiler zu gestalten. Um an Einzelteilen und Betriebsleistung zu sparen, sollen nun gemäß der vorliegenden Erfindung die nichtlinearen Widerstände ihre Vorspannung durch den Spannungsabfall an einem Kathodenwiderstand der Empfangsverstärkerrähre erhalten, an dem auch die Gittervorspannung .dieser Röhre abgegriffen ist. Insbesondere ist dabei der Kathodenwiderstand als Spannungsteiler ausgebildet, wobei für die Gittervorspannung und ,die Vorspannung der nichtlinearen Widerstände verschiedene Spannungen abgegriffen werden können.The invention relates to an electrical signal receiver; in which the signal device is rendered ineffective by means that respond to these frequencies when receiving other message frequencies, with an amplitude-dependent negative feedback via an arrangement of non-linear resistors with negative DC bias voltage: g according to patent 87402.3. The negative bias was used in the arrangement according to patent 874023 in order to make the working curve of the control steeper. In order to save on individual parts and operating power, according to the present invention, the non-linear resistors should get their bias voltage from the voltage drop across a cathode resistor of the receiving amplifier tube, from which the grid bias voltage .dieser tube is tapped. In particular, the cathode resistor is designed as a voltage divider, with different voltages being able to be tapped off for the grid bias and the bias of the non-linear resistors.
In den Fig. i und 2 sind Ausführungsbeispiele der Erfindung dargestellt. Das an den Klemmen i, 2 ankommende Nachrichtenband wird über den Vorübertrager hÜ -,der Verstärkerröhre V zugeführt. Über den im Anodenkreis der Verstärkerröhre angeordneten Ausgangsübertrager NU wird es den Ausgangsklemmen 3, 4 zugeleitet, an die die nicht dargestellten Signalvorrichtungen angeschlossen sind. Als nichtlineare Widerstandsanordnung dient die aus entgegengesetzt parallel geschalteten Trockengleichrichtern bestehende Anordnung Gl, ,die in Reihe mit einer niederohmigen Wicklung des Nachübertragers NÜ parallel zu der hochohmi.gen Sekundärwicklung des Vorübertragers VÜ liegt. Um die Gleichrichter in ihrer Durchlaßrichtung negativ vorzuspannen, ist bei dem Beispiel nach Fig. i .der Kathodenwiderstand R' benutzt, an dem auch die Gittervorspannung der Röhre V abgegriffen ist. Bei .dem Ausführungsbeispiel nach Fig. 2 ist der Kathodenwiderstand durch den Spannungsteiler aus den Widerständen R' und R" gebildet, um die Gleichrichtervorspannung zu vergrößern. Die Gittervorsp.annung ist hierbei nur am Widerstand R' abgenommen, während die Gleichstromvorspannung der Gleichrichteranordnung am gesamten Spannungsteiler abgegriffen wird. Bei den dargestellten Anordnungen werden also zur Erzeugung der benötigten Vorspannung für die Gleichrichteranordnung keine besonderen Widerstände erforderlich. Damit entfällt aber auch der zusätzliche Querstrom durch einen beispielsweise bei der Anordnung nach dem Patent 874023 angewendeten Spannungsteiler.Exemplary embodiments of the invention are shown in FIGS. The message tape arriving at terminals i, 2 is fed to the amplifier tube V via the pre-transmitter hÜ -. Via the output transformer NU arranged in the anode circuit of the amplifier tube, it is fed to the output terminals 3, 4 to which the signal devices (not shown) are connected. The non-linear resistor arrangement is the arrangement Gl, which consists of dry rectifiers connected in opposite directions and which is in series with a low-resistance winding of the secondary transformer NÜ and parallel to the high-resistance secondary winding of the primary transformer VÜ. In order to bias the rectifiers negatively in their forward direction, the cathode resistor R 'is used in the example according to FIG. In the embodiment according to FIG. 2, the cathode resistor is formed by the voltage divider from resistors R 'and R "in order to increase the rectifier bias voltage divider is sensed. in the illustrated arrangements, so no special resistors are required to generate the required bias voltage for the rectifier arrangement. but this also eliminates the additional cross-flow through an applied example, in the arrangement according to the Patent 874023 voltage divider.
Claims (2)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DES7257D DE874023C (en) | 1942-02-10 | 1942-02-10 | Electrical signal receiver |
DES10944D DE884517C (en) | 1942-02-10 | 1943-01-06 | Electrical signal receiver |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DES7257D DE874023C (en) | 1942-02-10 | 1942-02-10 | Electrical signal receiver |
DES10944D DE884517C (en) | 1942-02-10 | 1943-01-06 | Electrical signal receiver |
Publications (1)
Publication Number | Publication Date |
---|---|
DE884517C true DE884517C (en) | 1953-07-27 |
Family
ID=34712151
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DES7257D Expired DE874023C (en) | 1942-02-10 | 1942-02-10 | Electrical signal receiver |
DES10944D Expired DE884517C (en) | 1942-02-10 | 1943-01-06 | Electrical signal receiver |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DES7257D Expired DE874023C (en) | 1942-02-10 | 1942-02-10 | Electrical signal receiver |
Country Status (1)
Country | Link |
---|---|
DE (2) | DE874023C (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE956774C (en) * | 1953-08-22 | 1957-01-24 | Telefunken Gmbh | Arrangement for suppressing the interference level in tone call receivers with amplitude-dependent negative feedback |
DE1176180B (en) * | 1956-11-07 | 1964-08-20 | Fernseh Gmbh | Circuit arrangement for limiting the amplitude of television signals |
US3094670A (en) * | 1959-10-09 | 1963-06-18 | Central Electronics Inc | Inverse clipping circuit |
-
1942
- 1942-02-10 DE DES7257D patent/DE874023C/en not_active Expired
-
1943
- 1943-01-06 DE DES10944D patent/DE884517C/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE874023C (en) | 1953-04-20 |
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