DE432496C - Amplifier circuit - Google Patents

Amplifier circuit

Info

Publication number
DE432496C
DE432496C DEA40651D DEA0040651D DE432496C DE 432496 C DE432496 C DE 432496C DE A40651 D DEA40651 D DE A40651D DE A0040651 D DEA0040651 D DE A0040651D DE 432496 C DE432496 C DE 432496C
Authority
DE
Germany
Prior art keywords
speech
amplifier circuit
amplified
amplifiers
directional
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
Application number
DEA40651D
Other languages
German (de)
Inventor
Dr Georg Respondek
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AEG AG
Original Assignee
AEG AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to DEA38760D priority Critical patent/DE431660C/en
Priority to US661739A priority patent/US1688701A/en
Application filed by AEG AG filed Critical AEG AG
Priority to DEA40651D priority patent/DE432496C/en
Priority to US726200A priority patent/US1595927A/en
Priority claimed from GB1982424A external-priority patent/GB247612A/en
Application granted granted Critical
Publication of DE432496C publication Critical patent/DE432496C/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B3/00Line transmission systems
    • H04B3/02Details
    • H04B3/20Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Amplifiers (AREA)
  • Filters And Equalizers (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Description

Verstärkerschaltung. Im Hauptpatent 43166o ist eine Verstärkerschaltung angegeben, bei der mittels Richtverstärker ein Teil der verstärkten Sprechströme in Gleichstrom umgeformt wird, der dazu dient, die einer besonderen Stromduelle entnommene, dauernde Vormagnetisierung von Drosselspulen in den mnodenkreisen der Sprechverstärker durch den umgeformten Gleichstrom in Abhängigkeit von der Sprechrichtung derart auszugleichen, daß die Impedanz der Steuerdrosseln für die Frequenzen, die zu Störungen innerhalb der Verstärkerschaltung führen können, geändert wird.Amplifier circuit. In the main patent 43166o is an amplifier circuit specified, with the directional amplifier part of the amplified speech streams is converted into direct current, which is used to generate a special current duel removed, permanent premagnetization of choke coils in the mnode circles of the Speech amplifier through the converted direct current depending on the direction of speech compensate so that the impedance the control throttles for the Frequencies, which can lead to disturbances within the amplifier circuit, changed will.

Die Erfindung ermöglicht es, von dieser dauernden Vormagnetisierung abzusehen, und zwar dadurch, daß, wie die Zeichnung für ein Ausführungsbeispiel zeigt, die Gitterkreise der Richtverstärker R, und R, ebenso wie diejenigen der Sprechverstärker V, und V2 geschaltet werden, d. h. an die Sekundärwicklungen der Ausgleichsübertrager AUe, und AUe, oder an besondere Wicklungen z und 2 der letzteren oder endlich, wie punktiert eingezeichnet ist, an besondere Ausgleichsübertrager AUe,' und AUez angeschlossen werden.The invention enables this permanent bias to be foreseen, in that, as the drawing for an embodiment shows the grating circles of the directional amplifiers R, and R, as well as those of the Speech amplifiers V, and V2 are switched, d. H. to the secondary windings of the Compensating transformer AUe, and AUe, or on special windings z and 2 of the latter or, finally, as shown in dotted lines, to special equalizing transformers AUe, 'and AUez can be connected.

Die von der Fernleitung F, kommenden Sprechströme fließen über den Verstärker V, verstärkt nach der Fernleitung F2. Ein Teil der ankommenden Sprechströme fließt über den Richtverstärker R, und erzeugt eine Vormagnetisierung für die Drosselspule Dr" so daß deren Induktivität herabgesetzt wird und sie die verstärkten Ströme nicht drosselt. Die Richtverstärker müssen hierbei abweichend vom Hauptpatent so eingestellt sein, daß bereits ein Teil der unverstärkten Sprechströme durch die Richtverstärker auf den für die Vormagnetisierung erforderlichen Wert verstärkt wird. Von dem in V, verstärkten Sprechstrom fließt ein Teil nach der Fernleitung F2, ein Teil nach der Kunstleitung K12. Ist die Nachbildung nicht genau, so sind diese Teilströme ungleich, ihre Differenz wirkt auf V2 und R2 auf letzteren jedoch in so geringem Maße, daß der durch R, gleichgerichtete und verstärkte Strom zu einer nennenswerten Vormagnetisierung der Drossel Dy. nicht ausreicht. Diese Drossel behält daher ihre hohe Induktivität und drosselt die Ströme, die von VZ nach F1 und V1 zurückfließen könnten.The speech currents coming from the trunk line F, flow over the Amplifier V, amplified after the trunk line F2. Part of the incoming speech streams flows through the directional amplifier R, and generates a bias for the choke coil Dr "so that their inductance is reduced and they do not receive the amplified currents throttles. In this case, the directional amplifiers have to be set differently from the main patent be that already part of the unamplified speech streams through the directional amplifier is amplified to the value required for the premagnetization. From the in V, part of the amplified speech current flows to the trunk line F2, part to it the art director K12. If the simulation is not exact, then these are partial flows unequal, but their difference has so little effect on V2 and R2 on the latter Measure that the current rectified and amplified by R, becomes a significant Bias of the choke Dy. not enough. This throttle therefore retains its high inductance and throttles the currents that flow back from VZ to F1 and V1 could.

Claims (1)

PATENTANSPRUCH: Verstärkerschaltung nachPatent43i66o, dadurch gekennzeichnet; daß die Gitterkreise der Richtverstärker ebenso wie diejenigen der Sprechverstärker an die Ausgleichsübertrager oder an besondere Wicklungen der letzteren angeschlossen sind, so daß für jede Sprechrichtung die von den verstärkten Sprechströmen durchflossene Drossel von den unverstärkten Strömen aus über die zugehörigen Richtverstärker eine ausreichende Vormagnetisierung erhält, daß die Induktivität der Drossel praktisch aufgehoben ist. PATENT CLAIM: Amplifier circuit according to Patent 43i66o, characterized; that the lattice circles of the directional amplifiers as well as those of the speech amplifiers are connected to the equalizing transformer or to special windings of the latter, so that for each speech direction the throttle through which the amplified speech currents flow from the unamplified currents via the associated directional amplifier receives a sufficient premagnetization that the Inductance of the choke is practically eliminated.
DEA40651D 1922-11-08 1923-09-13 Amplifier circuit Expired DE432496C (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DEA38760D DE431660C (en) 1922-11-08 1922-11-08 Intermediate amplifier circuit with selective switching means
US661739A US1688701A (en) 1922-11-08 1923-09-10 Amplifier connection
DEA40651D DE432496C (en) 1922-11-08 1923-09-13 Amplifier circuit
US726200A US1595927A (en) 1922-11-08 1924-07-15 Amplifier connection

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DEA38760D DE431660C (en) 1922-11-08 1922-11-08 Intermediate amplifier circuit with selective switching means
DEA40651D DE432496C (en) 1922-11-08 1923-09-13 Amplifier circuit
GB1982424A GB247612A (en) 1924-08-21 1924-08-21 Improvements in electric amplifying apparatus

Publications (1)

Publication Number Publication Date
DE432496C true DE432496C (en) 1926-08-09

Family

ID=27208900

Family Applications (2)

Application Number Title Priority Date Filing Date
DEA38760D Expired DE431660C (en) 1922-11-08 1922-11-08 Intermediate amplifier circuit with selective switching means
DEA40651D Expired DE432496C (en) 1922-11-08 1923-09-13 Amplifier circuit

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DEA38760D Expired DE431660C (en) 1922-11-08 1922-11-08 Intermediate amplifier circuit with selective switching means

Country Status (2)

Country Link
US (2) US1688701A (en)
DE (2) DE431660C (en)

Also Published As

Publication number Publication date
US1688701A (en) 1928-10-23
US1595927A (en) 1926-08-10
DE431660C (en) 1926-07-15

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