DE600243C - High frequency amplifier with two amplifier tubes connected in series - Google Patents

High frequency amplifier with two amplifier tubes connected in series

Info

Publication number
DE600243C
DE600243C DES104365D DES0104365D DE600243C DE 600243 C DE600243 C DE 600243C DE S104365 D DES104365 D DE S104365D DE S0104365 D DES0104365 D DE S0104365D DE 600243 C DE600243 C DE 600243C
Authority
DE
Germany
Prior art keywords
tube
amplifier
series
high frequency
tubes connected
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
DES104365D
Other languages
German (de)
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.)
Sueddeutsche Telefon Apparate Kabel und Drahtwerke AG TEKADE
Original Assignee
Sueddeutsche Telefon Apparate Kabel und Drahtwerke AG TEKADE
Publication date
Priority to DES104365D priority Critical patent/DE600243C/en
Application granted granted Critical
Publication of DE600243C publication Critical patent/DE600243C/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/08—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/42—Amplifiers with two or more amplifying elements having their dc paths in series with the load, the control electrode of each element being excited by at least part of the input signal, e.g. so-called totem-pole amplifiers
    • H03F3/44—Amplifiers with two or more amplifying elements having their dc paths in series with the load, the control electrode of each element being excited by at least part of the input signal, e.g. so-called totem-pole amplifiers with tubes only

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)

Description

Hochfrequenzverstärker mit zwei in Reihe geschalteten Verstärkerröhren Die Erfindung betrifft eine Verstärkerschaltung mit zwei in Reihe geschalteten Röhren, von denen die eine zur Spannungsverstärkung dient und die zweite Röhre einen steuerbaren Widerstand bildet. Die Anwendung reiner zweiten gesteuerten Röhre in einer Stufe ist bereits bekannt. Die Erfindung bezieht sich auf eine besonders einfache Steuerung dieser Röhre, durch die .es möglich ist, der Arbeitskennline der Stufe jede beliebige Steilheit zu geben, so daß die Anordnung die mit gchirmgitterröhren erreichbare Verstärkung erheblich übertrifft.High-frequency amplifier with two amplifier tubes connected in series The invention relates to an amplifier circuit with two tubes connected in series, one of which is used for voltage amplification and the second tube is a controllable one Resistance forms. The application of a pure second controlled tube in one stage is already known. The invention relates to a particularly simple control this tube, through which it is possible, the working characteristic of the stage any To give steepness, so that the arrangement can be achieved with screen lattice tubes Gain significantly outperforms.

Nach der Erfindung wird die Wechsel. spannung zur Steuerung des Gitters der Widerstandsröhre von :einem zwischen den beiden in Reihe geschalteten Röhren liegenden Punkt abgenommen. Die Erfindung ist in der Zeichnung beispielsweise und schematisch dargestellt, und zwar ist mit i die Antennenspule und mit 2,3 der Gitterkreis der Bersten Röhre q. bezeichnet, welche von einem mit einem Kondensator 5 überbrückten Widerstand 6 ihre Gittervorspannung erhält. Die zweite Röhre 7 arbeitet zweckmäßig mit der gleichen Gittervorspannung wie die erste Röhre, zu deren Herstellung der von dem Kondensator 8 überbrückte Widerstand 9 dient, dessen eines Ende an der Anode der ersten Röhre und an dein Gitterkreis i o, i i der zweiten Röhre liegt. An diesem Widerstandsende ist über seinen den Gleichstrom blockierenden Kondensator 12 die den Anodenkreis der ersten Röhre bildende Wicklung 13 angeschlossen, die induktiv mit dem Gitterkreis 14, 15 der nachfolgenden Stufe -und gleichzeitig mit dem Gitterkreis i o, I I der Widerstandsröhre gekoppelt ist. Bei phasenrichtiger Ankopplung und entsprechender Dimensionierung der Wicklungen i o und 13 erfolgt eine Steuerung der Röhre 7 derart, daß bei zunehmendem Anodenstrom in der Röhre q. der Widerstand an der Röhre 7 sinkt, wobei durch Einstellung der Kopplung zwischen den Spulen 13 und i o die Widerstandsänderungen derart neingehalten werden - können, daß der Spannungsabfall an der Röhre 7 so klein wird, daß an der Röhre 4 eine Spannungserhöhung auftritt, die eine Drehung der Arbeitäkennlinle um den von - der negativen Gittervorspannung und dem Ruhestrom bestimmten Arbeitspunkt der Röhre 4 hervorruft, wodurch sich Steilheiter ergeben, die ein Vielfaches der statischen Steilheit betragen.According to the invention, the change. voltage for controlling the grid of the resistance tube taken from: a point lying between the two tubes connected in series. The invention is shown in the drawing by way of example and schematically, namely with i the antenna coil and with 2.3 the grid circle of the bursting tube q. denotes which receives its grid bias voltage from a resistor 6 bridged with a capacitor 5. The second tube 7 expediently works with the same grid bias voltage as the first tube, for the production of which the resistor 9 bridged by the capacitor 8 is used, one end of which is connected to the anode of the first tube and to the grid circle io, ii of the second tube. At this end of the resistor, via its capacitor 12 blocking the direct current, the winding 13 forming the anode circuit of the first tube is connected, which is inductively coupled to the grid circuit 14, 15 of the subsequent stage and at the same time to the grid circuit io, II of the resistance tube. With the correct phase coupling and appropriate dimensioning of the windings io and 13, the tube 7 is controlled in such a way that with increasing anode current in the tube q. the resistance at the tube 7 drops, and by adjusting the coupling between the coils 13 and io the changes in resistance can be kept in such a way that the voltage drop at the tube 7 becomes so small that a voltage increase occurs at the tube 4, which is a rotation the operating characteristic around the operating point of the tube 4 determined by the negative grid bias and the quiescent current, which results in steepnesses that are a multiple of the static steepness.

Claims (1)

PATENTANSPRUCH: Hochfrequenzverstärker für Wellen mit einer Frequenz unter iooo kHz mit zwei in Reihe geschalteten Verstärkerröhren, von denen die eine als. Spannungsverstärkerröhre und die andere als gesteuerte Widerstandsröhre dient und die Steuerung der Widerstandsröhre gegenphasig zur Steuerung der Spannungsverstärkerröhre erfolgt, dadurch gekennzeichnet, daß der Steuerkreis der Widerstandsröhre induktiv an einen kapazitiv an die Anode der Spannungsverstärkerröhre angeschlossenen Schwingkreis angekoppelt ist.PATENT CLAIM: High frequency amplifier for waves with one frequency below 100 kHz with two amplifier tubes connected in series, one of which as. Voltage amplifier tube and the other serves as a controlled resistance tube and controlling the resistance tube in phase opposition to controlling the voltage booster tube takes place, characterized in that the control circuit of the resistance tube is inductive to an oscillating circuit capacitively connected to the anode of the voltage amplifier tube is coupled.
DES104365D High frequency amplifier with two amplifier tubes connected in series Expired DE600243C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DES104365D DE600243C (en) High frequency amplifier with two amplifier tubes connected in series

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES104365D DE600243C (en) High frequency amplifier with two amplifier tubes connected in series

Publications (1)

Publication Number Publication Date
DE600243C true DE600243C (en) 1934-07-17

Family

ID=7525804

Family Applications (1)

Application Number Title Priority Date Filing Date
DES104365D Expired DE600243C (en) High frequency amplifier with two amplifier tubes connected in series

Country Status (1)

Country Link
DE (1) DE600243C (en)

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