DE685673C - Multi-part, adjustable tone screen for receiver and amplifier - Google Patents
Multi-part, adjustable tone screen for receiver and amplifierInfo
- Publication number
- DE685673C DE685673C DET46719D DET0046719D DE685673C DE 685673 C DE685673 C DE 685673C DE T46719 D DET46719 D DE T46719D DE T0046719 D DET0046719 D DE T0046719D DE 685673 C DE685673 C DE 685673C
- Authority
- DE
- Germany
- Prior art keywords
- amplifier
- tone screen
- receiver
- capacitors
- adjustable tone
- 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
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G5/00—Tone control or bandwidth control in amplifiers
- H03G5/02—Manually-operated control
- H03G5/04—Manually-operated control in untuned amplifiers
- H03G5/06—Manually-operated control in untuned amplifiers having discharge tubes
Landscapes
- Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
Description
Mehrgliedrige, regelbare Tonbde für Empfänger und Verstärker In Empfängern wendet man häufig Tonblenden zur Unterdrückung der hohen Töne an, um die Störungen zu vermindern oder ein Durchschlagen der Nachbarsender zu verhindern. Es ist z. B. bekannt, mehrere untereinander und zur Anoden-Kathoden-Strecke einer Röhre parallel liegende Kondensatoren mittels eines Stufenschalters nacheinander abschaltbar zu machen. Mit demselben Stufenschalter können untereinander parallel liegende Kopplungskondensatoren der Widerstandsverstärkerstufe abgeschaltet werden.Multi-section, adjustable sound base for receivers and amplifiers in receivers One often applies tone screens to suppress the high tones in order to avoid the disturbances to reduce or prevent the neighboring transmitters from breaking through. It is Z. B. known, several parallel to each other and to the anode-cathode section of a tube lying capacitors can be switched off one after the other by means of a step switch do. Coupling capacitors that are parallel to one another can be used with the same step switch the resistance amplifier stage can be switched off.
Die Frequ.enzkurve des Niederfrequenzteiles fällt um so steiler ab, je mehr Glieder die Tonblende aufweist. Dann wird aber die Regelung umständlicher. Bisher mußte man die einzelnen veränderbaren Kondensatoren einer aus Längswiderständen und Querkondensatoren bestehenden Tonblende miteinander kuppeln.The frequency curve of the low frequency part falls off the more steeply, the more links the tone screen has. But then the regulation becomes more cumbersome. Up to now, the individual changeable capacitors had to be made up of series resistors and shunt capacitors couple the existing sound screen with one another.
Es ist ferner bekannt, bei einer Dämpfungseinrichtung für Prüf-, Meß- und Tonfilmzwecke, bestehend aus einer mehrgliedrigen Filterkette, mehrere Längswiderstände und mehrere Querwiderstände gleichzeitig mittels gekuppelter Schalter unwirksam. zu machen, indem die Längswiderstände kurzgeschlossen und .die Querwiderstände abgeschaltet werden.It is also known, in a damping device for testing, measuring and sound film purposes, consisting of a multi-link filter chain, several series resistors and several transverse resistances ineffective at the same time by means of coupled switches. to do by short-circuiting the series resistors and disconnecting the cross resistors will.
Die Erfindung befaßt sich mit einer Vereinfachung der Regelung einer aus Längswiderständen und Querkondensatoren bestehenden mehrgliedrigen, regelbaren Tonblende.The invention is concerned with simplifying the control of a multi-link, controllable, consisting of series resistors and shunt capacitors Bezel.
Nach der Erfindung wird vorgeschlagen, daß die Längswiderstände nacheinander mittels eines einzigen Stufenschalters oder .eines aus den Längswiderständen mehrerer Glieder gebildeten Regelwiderstandes kurzschließbar oder die Querkondensatoren nacheinander mittels eines einzigen Stufienschaiters abschaltbar sind.According to the invention it is proposed that the series resistances one after the other by means of a single step switch or one of the series resistances of several Elements formed variable resistor can be short-circuited or the cross capacitors one after the other can be switched off by means of a single step switch.
Der Vorteil der Erfindung liegt .darin, daß ein einziger Stufenschalter bzw. nur ein einziger regelbarer Widerstand angewendet und trotzdem ein Regelbereich erzielt wird, der sich von der vollen Wirksamkeit der Tonblende bis zur völligen Ausschaltung oder fast völligen Ausschaltung erstreckt.The advantage of the invention is .darin that a single tap changer or only a single adjustable resistor is used and still has a control range is achieved, which varies from the full effectiveness of the tone screen to complete Elimination or almost complete elimination.
In Abb.i ist mit Cl der Ankopplungskondensator von der vorhergehenden Röhre zur dargestellten Röhre bezeichnet. R1 ist der Gitterableitwiderstand. R2 bildet zusammen mit den Kondensatoren C2 und C3 die Tonblende. Mit S ist der gemäß der Erfindung angewendete Schalter bezeichnet. In der dargestellten Stellung ist die Tonblende voll wirksam. In der nächsten Stellung wirkt nur der linke Teil des Widerstandes R2 zusammen mit den parallel geschalteten Kondensatoren C2 und C3, während in der linken Stellung des Schalters die Tonblende im wesentlichen unwirksam ist.In Fig.i, Cl is the coupling capacitor from the previous one Tube referred to the tube shown. R1 is the grid leakage resistance. R2 forms together with the capacitors C2 and C3 the tone screen. With S that is according to the invention applied switches referred to. Is in the position shown the tone screen is fully effective. In the next position only the left part of the is effective Resistor R2 together with the capacitors C2 and C3 connected in parallel, while in the left position of the switch the sound screen is essentially ineffective is.
In Abb.3 ist die Änderung der Frequenzkurve dargestellt, wobei auch zwei in Abb. i nicht vorgesehene Zwischenstellungen z und q. berücksichtigt sind. Auf der Waagerechten ist die Frequenz und auf der Senkrechten die Lautstärke aufgetragen.In Fig.3 the change in the frequency curve is shown, where also two intermediate positions z and q not provided in Fig. i. are taken into account. The frequency is plotted on the horizontal and the volume on the vertical.
In Abb. z ist ein stetig regelbarer Widerstand vorgesehen, so daß der Bereich zwischen den Kurven i und 5 in Abb. 3 stetig durchlaufen wird.In Fig. Z a continuously adjustable resistor is provided so that the area between curves i and 5 in Fig. 3 is traversed continuously.
Die Abb. q. stellt ein Ausführungsbeispiel für die obenerwähnte Abschaltung der Kondensatoren dar.Fig.q. represents an embodiment for the aforementioned shutdown of the capacitors.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DET46719D DE685673C (en) | 1936-04-07 | 1936-04-07 | Multi-part, adjustable tone screen for receiver and amplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DET46719D DE685673C (en) | 1936-04-07 | 1936-04-07 | Multi-part, adjustable tone screen for receiver and amplifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE685673C true DE685673C (en) | 1939-12-22 |
Family
ID=7562410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DET46719D Expired DE685673C (en) | 1936-04-07 | 1936-04-07 | Multi-part, adjustable tone screen for receiver and amplifier |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE685673C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE882104C (en) * | 1943-01-26 | 1953-07-06 | Schaub Appbau Ges M B H G | Radio receiver with pickup connection |
| US3146407A (en) * | 1960-12-01 | 1964-08-25 | Sperry Rand Corp | Tunable regenerative feedback amplifier having constant attenuation variable phase shift network |
-
1936
- 1936-04-07 DE DET46719D patent/DE685673C/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE882104C (en) * | 1943-01-26 | 1953-07-06 | Schaub Appbau Ges M B H G | Radio receiver with pickup connection |
| US3146407A (en) * | 1960-12-01 | 1964-08-25 | Sperry Rand Corp | Tunable regenerative feedback amplifier having constant attenuation variable phase shift network |
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