DE648680C - Arrangement for simultaneous control of the volume in the high-frequency and in the low-frequency part of a receiving device by means of a single resistance tap - Google Patents
Arrangement for simultaneous control of the volume in the high-frequency and in the low-frequency part of a receiving device by means of a single resistance tapInfo
- Publication number
- DE648680C DE648680C DES105735D DES0105735D DE648680C DE 648680 C DE648680 C DE 648680C DE S105735 D DES105735 D DE S105735D DE S0105735 D DES0105735 D DE S0105735D DE 648680 C DE648680 C DE 648680C
- Authority
- DE
- Germany
- Prior art keywords
- frequency
- low
- volume
- arrangement
- frequency part
- 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
- 239000003990 capacitor Substances 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/02—Manually-operated control
Landscapes
- Control Of Amplification And Gain Control (AREA)
Description
Anordnung zur, gleichzeitigen gleichsinnigen Regelung der Lautstärke im Hochfrequenz- und im Niederfrequenzteil eines Empfangsgerätes mittels eines einzigen Widerstandsabgriffes Die Erfindung bezieht sich auf Anordnungen zur gleichzeitigen gleichsinnigen Regelung der Lautstärke im Hoch.frequenzteil und im Niederfrequenzteil mittels eines einzigen Widerstandsabgriffes in Empfangsgeräten.Arrangement for, simultaneous control of the volume in the same direction in the high-frequency and in the low-frequency part of a receiving device by means of a single Resistance tap The invention relates to arrangements for simultaneous control of the volume in the same direction in the high-frequency part and in the low-frequency part by means of a single resistance tap in receiving devices.
Solche Anordnungen sind bereits in der Form bekanntgeworden, daß die Anodenruhespannung des Audions und die Schirmgitterspannung eines Hochfrequenzrohres ioder die Anodenruhespannung eines Rohres im Hochfrequenzteil und ein Nebenwiderstand zur Primärwicklung eines Niederfrequenztransformators gleichzeitig geregelt werden.Such arrangements are already known in the form that the Anode rest voltage of the audion and the screen grid voltage of a high-frequency tube ior the anode rest voltage of a tube in the high-frequency part and a shunt resistance to the primary winding of a low frequency transformer can be regulated simultaneously.
Der Erfindung liegt die Aufgabe-zugrunde, bei Änderung eines Niederfrequenzspannungsabgriffes gleichzeitig im Hochfrequenzteil des Gerätes durch Änderung der Steuergittervorspannung die Lautstärke zu regeln, da mittels der Steuergittervorspannung auf wesentlich einfachere Weise geregelt werden kann.The invention is based on the problem of changing a low-frequency voltage tap at the same time in the high-frequency part of the device by changing the control grid bias to regulate the volume, since by means of the control grid bias on essential can be regulated in a simpler way.
Die Benutzung :eines verstellbaren Abgriffes .an einem Belastungswiderstand im Anodenkreis eines Niederfrequenzrohres führt jedoch zunächst zu Regelungen entgegengesetzten Sinnes im Hochfrequenz- und im Niederfrequenzteil. Diese Verhältnisse sollen an Hand der Abb. i der Zeichnung erläutert werden.The use: an adjustable tap on a load resistor in the anode circuit of a low-frequency tube, however, initially leads to opposite regulations Sense in high frequency and low frequency part. These relationships are supposed to Hand of Fig. I of the drawing will be explained.
In dieser bezeichnet A ein Rohr des H@ochfrequen7verstärkerteiles und B ein Anodengleichrichterrohr oder, wenn die Schaltung nicht gleichzeitig zur automatischen Lautstärkeregelung benutzt #t#@,ird, ein Rohr des Niederfrequenzverstärkers.In this, A denotes a tube of the high frequency amplifier part and B an anode rectifier tube or, if the circuit is not used simultaneously automatic volume control uses #t # @, ird, a tube of low frequency amplifier.
Verschiebt man in dieser Anordnung den Reiter i .am Widerstand 2 nach obern, so wird das. Gitter des Hochfrequenzverstärkerroh.Des A positiver vorgespannt, so daß Hochfrequenzverstärkung -und Lautstärke wachsen, während sich beim Verschieben des Reiters i nach unten das Umgekehrte ergibt. Andererseits ist aber zu erkennen, daß beim Verschieben des Reiters i nach oben die zwischen den Punkten 6 und 7 entstehende Niederfrequenzspannung sinkt, während sie beim Verschieben des Reiters 2 nach unten wächst und sich auch die Lautstärke der Wiedergabe entsprechend ändert. Bei dieser Anordnung sind also die Regelwirkungen im Hochfrequenzteil und im Niederfrequenzteil beim Verstellen des Reiters i entgegengesetzte für die Lautstärke.If you move the tab i. At resistor 2 in this arrangement at the top, the grid of the high-frequency amplifier raw. The A is biased more positively, so that high frequency gain and volume grow while moving of the tab i downwards results in the reverse. On the other hand, it can be seen that when the tab i is moved upwards, the result between points 6 and 7 Low frequency voltage drops while it is moving the tab 2 down grows and the volume of playback changes accordingly. At this The arrangement is therefore the control effects in the high-frequency part and in the low-frequency part when moving the tab i opposite for the volume.
Wird jedoch gemäß der Erfindung zur Regelung der Lautstärke im Hochfrequenzteil durch Änderung der Steuergitbervorspannung und im Niederfrequenzteil durch Änderung des Belastungswiderstandes eines Anodenkreises der Regel.abgriff an einem im Anodenkreis eines Niederfrequenzrohres zum Kopplungswiderstand wechselstrommäßig parallel liegendem Widerstand verstellt, dessen Enden durch einen Kondensator überbrückt sind, so läßt sich die gleichzeitige gleichsinnige Regelung verwirklichen.However, according to the invention, it is used to regulate the volume in the high-frequency part by changing the control grid bias and in the low frequency part by changing the load resistance of an anode circuit usually tapping on one in the anode circuit a low-frequency tube lying parallel to the coupling resistance in terms of alternating current Resistance adjusted, its ends through bridged a capacitor are, the simultaneous regulation in the same direction can be implemented.
Eine beispielsweise Ausführung zeigt die Abb. 2 der Zeichnung. B, i und 5 bezeichnenwieder die entsprechenden Teile wie in Abb. i. . Die Widerstände 2,2 und all bilden einen wech-@ selstrommäßig im Anodenkreis des Rohres B zum Widerstand 5 parallel liegenden Widerstand, dessen Enden durch den Kondensator 3 überbrückt sind. Zwischen dem Abgriff i und dem negativen Punkt der Stromquelle liegt der Widerstand S.An example embodiment is shown in Fig. 2 of the drawing. B, i and 5 again designate the corresponding parts as in Fig. i. . The resistances 2,2 and all form an alternating current in the anode circuit of the tube B to the resistor 5 parallel resistor, the ends of which are bridged by capacitor 3 are. The resistance is between the tap i and the negative point of the current source S.
Wird bei dieser Anordnun- der Ab-riff i I nach unten verstellt, so steigt einerseits die über die Leitung 9 an dem Steuergitter des Hochfrequenzrohres liegende Spannung im positiven Sinne, und andererseits wächst die zwischen den Klemmen 6 und 7 liegende Niederfrequenzspannung, während bei der Verstellung des Abgriifes i nach oben das Entgegengesetzte stattfindet, so daß also die Regelung sowohl im Hochfrequenz- als auch im Niederfrequenzteil durchaus gleichsinnig erfolgt.If the Ab-riff i I is adjusted downwards in this arrangement, on the one hand the voltage across the line 9 on the control grid of the high-frequency tube increases in the positive sense, and on the other hand the low-frequency voltage between the terminals 6 and 7 increases Adjustment of the tap i upwards takes place in the opposite direction, so that the regulation takes place in the same direction both in the high-frequency and in the low-frequency part.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DES105735D DE648680C (en) | 1932-08-05 | 1932-08-05 | Arrangement for simultaneous control of the volume in the high-frequency and in the low-frequency part of a receiving device by means of a single resistance tap |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DES105735D DE648680C (en) | 1932-08-05 | 1932-08-05 | Arrangement for simultaneous control of the volume in the high-frequency and in the low-frequency part of a receiving device by means of a single resistance tap |
Publications (1)
Publication Number | Publication Date |
---|---|
DE648680C true DE648680C (en) | 1937-08-06 |
Family
ID=7526826
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DES105735D Expired DE648680C (en) | 1932-08-05 | 1932-08-05 | Arrangement for simultaneous control of the volume in the high-frequency and in the low-frequency part of a receiving device by means of a single resistance tap |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE648680C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1107279B (en) * | 1958-01-09 | 1961-05-25 | Marconi Wireless Telegraph Co | Circuit arrangement for gain control, in particular for contrast control in television receivers |
-
1932
- 1932-08-05 DE DES105735D patent/DE648680C/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1107279B (en) * | 1958-01-09 | 1961-05-25 | Marconi Wireless Telegraph Co | Circuit arrangement for gain control, in particular for contrast control in television receivers |
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