DE432496C - Amplifier circuit - Google Patents
Amplifier circuitInfo
- 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
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/02—Details
- H04B3/20—Reducing 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)
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) |
-
1922
- 1922-11-08 DE DEA38760D patent/DE431660C/en not_active Expired
-
1923
- 1923-09-10 US US661739A patent/US1688701A/en not_active Expired - Lifetime
- 1923-09-13 DE DEA40651D patent/DE432496C/en not_active Expired
-
1924
- 1924-07-15 US US726200A patent/US1595927A/en not_active Expired - Lifetime
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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