GB775633A - Improvements in or relating to audio-frequency transistor amplifiers - Google Patents

Improvements in or relating to audio-frequency transistor amplifiers

Info

Publication number
GB775633A
GB775633A GB3219855A GB3219855A GB775633A GB 775633 A GB775633 A GB 775633A GB 3219855 A GB3219855 A GB 3219855A GB 3219855 A GB3219855 A GB 3219855A GB 775633 A GB775633 A GB 775633A
Authority
GB
United Kingdom
Prior art keywords
transistor
transistors
class
audio
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
GB3219855A
Inventor
Robert Arthur Hilbourne
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.)
General Electric Co PLC
Original Assignee
General Electric Co PLC
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 General Electric Co PLC filed Critical General Electric Co PLC
Priority to GB3219855A priority Critical patent/GB775633A/en
Publication of GB775633A publication Critical patent/GB775633A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/26—Push-pull amplifiers; Phase-splitters therefor

Landscapes

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

Abstract

775,633. Transistor amplifying circuits. GENERAL ELECTRIC CO., Ltd. Nov. 10, 1955, No. 32198/55. Class 40(6) In a class B audio amplifier two similar transistors 9, 10 are arranged in push-pull with a small forward emitter bias, a driver 1 feeding the transistors via a step-up transformer 4 with an overall ratio of at least two to one, the transistor 1 operating in class A and all the transistors being connected in the common collector arrangement. Current limiting resistors 5, 6 decoupled by capacitors 7, 11 are arranged in the emitter circuit of transistor 1 and provide the forward bias for the transistors 9, 10. Since the peak-to-peak value of the output from transistor 1 is limited to the battery 'voltage and this signal is required for each transistor 9. 10 the transformer 4 has a turns ratio of at least two to one.
GB3219855A 1955-11-10 1955-11-10 Improvements in or relating to audio-frequency transistor amplifiers Expired GB775633A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3219855A GB775633A (en) 1955-11-10 1955-11-10 Improvements in or relating to audio-frequency transistor amplifiers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3219855A GB775633A (en) 1955-11-10 1955-11-10 Improvements in or relating to audio-frequency transistor amplifiers

Publications (1)

Publication Number Publication Date
GB775633A true GB775633A (en) 1957-05-29

Family

ID=10334812

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3219855A Expired GB775633A (en) 1955-11-10 1955-11-10 Improvements in or relating to audio-frequency transistor amplifiers

Country Status (1)

Country Link
GB (1) GB775633A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1118261B (en) * 1958-10-14 1961-11-30 Philips Nv Push-pull A-amplifier with two transistors

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1118261B (en) * 1958-10-14 1961-11-30 Philips Nv Push-pull A-amplifier with two transistors

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