GB984876A - Transistor amplifier - Google Patents

Transistor amplifier

Info

Publication number
GB984876A
GB984876A GB1860063A GB1860063A GB984876A GB 984876 A GB984876 A GB 984876A GB 1860063 A GB1860063 A GB 1860063A GB 1860063 A GB1860063 A GB 1860063A GB 984876 A GB984876 A GB 984876A
Authority
GB
United Kingdom
Prior art keywords
transistor
resistor
collector
capacitor
stage
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
GB1860063A
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.)
Robert Bosch Fernsehanlagen GmbH
Original Assignee
Fernseh GmbH
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 Fernseh GmbH filed Critical Fernseh GmbH
Publication of GB984876A publication Critical patent/GB984876A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/14—Picture signal circuitry for video frequency region
    • H04N5/148—Video amplifiers
    • 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/30—Single-ended push-pull [SEPP] amplifiers; Phase-splitters therefor
    • H03F3/3083—Single-ended push-pull [SEPP] amplifiers; Phase-splitters therefor the power transistors being of the same type
    • H03F3/3086—Single-ended push-pull [SEPP] amplifiers; Phase-splitters therefor the power transistors being of the same type two power transistors being controlled by the input signal
    • H03F3/3096—Single-ended push-pull [SEPP] amplifiers; Phase-splitters therefor the power transistors being of the same type two power transistors being controlled by the input signal using a single transistor with output on emitter and collector as phase splitter
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/50—Amplifiers in which input is applied to, or output is derived from, an impedance common to input and output circuits of the amplifying element, e.g. cathode follower
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
    • H03F2203/50—Indexing scheme relating to amplifiers in which input being applied to, or output being derived from, an impedance common to input and output circuits of the amplifying element, e.g. cathode follower
    • H03F2203/5006—Indexing scheme relating to amplifiers in which input being applied to, or output being derived from, an impedance common to input and output circuits of the amplifying element, e.g. cathode follower the input signal being capacitively coupled to the gate of the source follower
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
    • H03F2203/50—Indexing scheme relating to amplifiers in which input being applied to, or output being derived from, an impedance common to input and output circuits of the amplifying element, e.g. cathode follower
    • H03F2203/5009—Indexing scheme relating to amplifiers in which input being applied to, or output being derived from, an impedance common to input and output circuits of the amplifying element, e.g. cathode follower the output signal being capacitively coupled to the source of the source follower
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
    • H03F2203/50—Indexing scheme relating to amplifiers in which input being applied to, or output being derived from, an impedance common to input and output circuits of the amplifying element, e.g. cathode follower
    • H03F2203/5015—Indexing scheme relating to amplifiers in which input being applied to, or output being derived from, an impedance common to input and output circuits of the amplifying element, e.g. cathode follower the source follower has a controlled source circuit, the controlling signal being derived from the gate circuit of the follower
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
    • H03F2203/50—Indexing scheme relating to amplifiers in which input being applied to, or output being derived from, an impedance common to input and output circuits of the amplifying element, e.g. cathode follower
    • H03F2203/5021—Indexing scheme relating to amplifiers in which input being applied to, or output being derived from, an impedance common to input and output circuits of the amplifying element, e.g. cathode follower the source follower has a controlled source circuit

Landscapes

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

Abstract

984,876. Transistor amplifying circuits. FERNSEH G.m.b.H. May 10, 1963 [May 11, 1962], No. 18600/63. Heading H3T. A transistor amplifier comprises a voltageamplifying stage T 2 , Fig. 1, driving an output stage T 1 in common-collector connection which feeds into an output load R L via a capacitor C. According to the invention, in order to reduce the loss at low frequencies due to the capacitor C, negative feedback is applied to the transistor T 1 by the inclusion of a resistor R 3 in its collector circuit and returning the load resistor R 1 of the amplifying stage T 2 to the collector of the stage T 1 . The emitter-circuit resistor R 2 of the transistor T 1 may be replaced by the emitter collector path of a further transistor T 3 , Fig. 3, in which case the base of this further transistor may be driven by returning it to the cathode of the amplifying transistor T 2 . The transistor T 3 may be of opposite conductivity type to the transistors T 1 , T 2 . In this arrangement the collector circuit resistor R 3 may be used to derive a voltage for automatic gain control, the voltage across this resistor being applied via capacitor C 2 to a rectifier circuit comprising diodes D 1 , D 2 to produce a smoothed voltage across capacitor C 3 which is used to control the gain of preceding stages of the amplifier.
GB1860063A 1962-05-11 1963-05-10 Transistor amplifier Expired GB984876A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEF36780A DE1160012B (en) 1962-05-11 1962-05-11 Transistor amplifier with low output resistance

Publications (1)

Publication Number Publication Date
GB984876A true GB984876A (en) 1965-03-03

Family

ID=7096602

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1860063A Expired GB984876A (en) 1962-05-11 1963-05-10 Transistor amplifier

Country Status (2)

Country Link
DE (1) DE1160012B (en)
GB (1) GB984876A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3840854C2 (en) * 1988-12-03 1995-05-04 Telefunken Microelectron Broadband amplifier

Also Published As

Publication number Publication date
DE1160012B (en) 1963-12-27

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