GB377563A - Improvements in or relating to amplifier and other systems wherein a linear relationship between output and input is required - Google Patents

Improvements in or relating to amplifier and other systems wherein a linear relationship between output and input is required

Info

Publication number
GB377563A
GB377563A GB825/32A GB82532A GB377563A GB 377563 A GB377563 A GB 377563A GB 825/32 A GB825/32 A GB 825/32A GB 82532 A GB82532 A GB 82532A GB 377563 A GB377563 A GB 377563A
Authority
GB
United Kingdom
Prior art keywords
valve
input
voltage
output
amplifier
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
GB825/32A
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.)
Telefunken AG
Original Assignee
Telefunken AG
Telefunken Gesellschaft fuer Drahtlose Telegraphie mbH
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
Application filed by Telefunken AG, Telefunken Gesellschaft fuer Drahtlose Telegraphie mbH filed Critical Telefunken AG
Publication of GB377563A publication Critical patent/GB377563A/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
    • H03F1/32—Modifications of amplifiers to reduce non-linear distortion
    • H03F1/33—Modifications of amplifiers to reduce non-linear distortion in discharge-tube amplifiers

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)

Abstract

377,563. Valve amplifying circuits. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE, 12, Hallesches Ufer, Berlin.-(Assignees of Siemens & Halske Akt.-Ges.; Siemensstadt, Berlin.) Jan. 11, 1982, No. 825. Convention date, Jan. 9, 1931. [Class 40 (v).] Distortion, due to non-linearity in the relation between input and output of a valve amplifier, is removed by combining the main output with the output of an auxiliary amplifier the input to which is suitably controlled. As shown in Fig. 4, applied to a push-pull amplifier V1, V2, the input is applied at K1, K2 to the valve grids, and the output load Z is coupled to the anode circuits by transformers Trl, Tr2 in the usual way. These transformers are also fed with current derived through a transformer Tr4 from the anode circuit of an auxiliary valve V4. The input to this valve is resistance-coupled to a valve V3 which has a complex input voltage. This is composed (1.) of a voltage Eg1, derived from the main input, (2) of a voltage Eg2 derived through a condenser Cl from a resistance or'impedance R in the anode circuit of the valve V4, and (3) of a voltage Eg3 derived from the anode current of the main valves V1, V2. The Specification shows by analysis that the load current J1 + J3, has a linear relation to the input voltage, despite non-linearity in the amplifier stage VI, V2, which may comprise a single valve instead of the push-pull pair shown. The Specification states that disturbing voltages or ripple are also eliminated. In a modification shown in Fig. 5, the load circuit Z is connected in series with the output transformers Trl, Tr2 of the main amplifier valve V1 and the auxiliary valve V4. The input voltage Eg1 is applied to the grid of the valve V1 through a coil W3, and to the grid of a valve V3 through a coil W2, the valve V3 being resistance-coupled to the auxiliary valve V4. The grid of the valve V3 also receives a voltage Eg2 through a condenser C1 from the output transformer of the valve V1, and a voltage Eg3 from a transformer Tr3 connected across a resistance R in the anode circuit of the auxiliary valve V4.
GB825/32A 1931-01-09 1932-01-11 Improvements in or relating to amplifier and other systems wherein a linear relationship between output and input is required Expired GB377563A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE377563X 1931-01-09

Publications (1)

Publication Number Publication Date
GB377563A true GB377563A (en) 1932-07-28

Family

ID=6344419

Family Applications (1)

Application Number Title Priority Date Filing Date
GB825/32A Expired GB377563A (en) 1931-01-09 1932-01-11 Improvements in or relating to amplifier and other systems wherein a linear relationship between output and input is required

Country Status (2)

Country Link
US (1) US1940414A (en)
GB (1) GB377563A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8497734B2 (en) 2010-06-14 2013-07-30 Harman International Industries, Incorporated High efficiency audio amplifier system
US8482346B2 (en) 2010-06-14 2013-07-09 Harman International Industries, Incorporated High efficiency balanced output amplifier system

Also Published As

Publication number Publication date
US1940414A (en) 1933-12-19

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