GB951342A - Improvements in or relating to electrical amplifying apparatus employing junction transistors - Google Patents

Improvements in or relating to electrical amplifying apparatus employing junction transistors

Info

Publication number
GB951342A
GB951342A GB3727761A GB3727761A GB951342A GB 951342 A GB951342 A GB 951342A GB 3727761 A GB3727761 A GB 3727761A GB 3727761 A GB3727761 A GB 3727761A GB 951342 A GB951342 A GB 951342A
Authority
GB
United Kingdom
Prior art keywords
stage
output
transistor
temperature
relating
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
GB3727761A
Inventor
John Edward Lawrence
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.)
S Smith and Sons Ltd
S Smith and Sons England Ltd
Original Assignee
S Smith and Sons Ltd
S Smith and Sons England Ltd
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 S Smith and Sons Ltd, S Smith and Sons England Ltd filed Critical S Smith and Sons Ltd
Priority to GB3727761A priority Critical patent/GB951342A/en
Publication of GB951342A publication Critical patent/GB951342A/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
    • H03F1/30—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters
    • H03F1/302—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters in bipolar transistor amplifiers

Landscapes

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

Abstract

951,342. Transistor amplifying circuits. S. SMITH & SONS (ENGLAND) Ltd. Oct. 12, 1962 [Oct. 17, 1961], No. 37277/61. Heading H3T. In a two-stage transistor amplifier in which the base bias for the second, output; stage is derived from the output of the first stage, temperature compensation of the output stage is achieved by mounting the transistors of the two stages on a common head sink and by so arranging the parameters of the first stage that the changes in bias voltage at the output stage resulting from variations in temperature are such as to compensate the corresponding changes of collector current in the output stage. In the circuit shown, resistor 13 is so chosen that the bias variations applied to the base of output transistor 21 via emitter-follower 20 due to the temperature sensitivity of first-stage transistor 9 are such as to compensate changes in collector current in transistor 21 with temperature.
GB3727761A 1961-10-17 1961-10-17 Improvements in or relating to electrical amplifying apparatus employing junction transistors Expired GB951342A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3727761A GB951342A (en) 1961-10-17 1961-10-17 Improvements in or relating to electrical amplifying apparatus employing junction transistors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3727761A GB951342A (en) 1961-10-17 1961-10-17 Improvements in or relating to electrical amplifying apparatus employing junction transistors

Publications (1)

Publication Number Publication Date
GB951342A true GB951342A (en) 1964-03-04

Family

ID=10395167

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3727761A Expired GB951342A (en) 1961-10-17 1961-10-17 Improvements in or relating to electrical amplifying apparatus employing junction transistors

Country Status (1)

Country Link
GB (1) GB951342A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3667064A (en) * 1969-05-19 1972-05-30 Massachusetts Inst Technology Power semiconductor device with negative thermal feedback
US4013971A (en) * 1974-12-04 1977-03-22 Telefonaktiebolaget L M Ericsson Integrated amplifier

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3667064A (en) * 1969-05-19 1972-05-30 Massachusetts Inst Technology Power semiconductor device with negative thermal feedback
US4013971A (en) * 1974-12-04 1977-03-22 Telefonaktiebolaget L M Ericsson Integrated amplifier

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