GB956638A - Improvements in or relating to audio frequency transformers - Google Patents

Improvements in or relating to audio frequency transformers

Info

Publication number
GB956638A
GB956638A GB2018962A GB2018962A GB956638A GB 956638 A GB956638 A GB 956638A GB 2018962 A GB2018962 A GB 2018962A GB 2018962 A GB2018962 A GB 2018962A GB 956638 A GB956638 A GB 956638A
Authority
GB
United Kingdom
Prior art keywords
primary
wound
trifilar
audio frequency
transformers
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
GB2018962A
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.)
BAE Systems Electronics Ltd
Original Assignee
Marconi Co 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
Priority claimed from AU5150/61A external-priority patent/AU256030B2/en
Application filed by Marconi Co Ltd filed Critical Marconi Co Ltd
Publication of GB956638A publication Critical patent/GB956638A/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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F19/00—Fixed transformers or mutual inductances of the signal type
    • H01F19/02—Audio-frequency transformers or mutual inductances, i.e. not suitable for handling frequencies considerably beyond the audio range

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Multimedia (AREA)
  • Coils Or Transformers For Communication (AREA)

Abstract

956,638. Transformers. MARCONI CO. Ltd. May 25, 1962 [May 26, 1961], No. 20189/62. Heading H1T. audio frequency transformer has its primary and secondary windings wound together in the form of a trifilar or multifilar winding in order to arrange the natural frequency so that feedback of harmonics to earlier stages in a radio receiver is minimised. Trifilar wound coils may be connected to form one primary and a centre tapped secondary (Fig. 2a) or a centre tapped primary and a single secondary. Quadrifilar wound coils may be connected to give centre tapped primary and secondary windings or three of the coils may be connected together to form either the primary or secondary winding (Fig. 2c, not shown). The circuit of a transistorised radio receiver employing two trifilar wound transformers is given.
GB2018962A 1961-05-26 1962-05-25 Improvements in or relating to audio frequency transformers Expired GB956638A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AU5150/61A AU256030B2 (en) 1961-05-26 Improved method of stabilizing transistorised receivers

Publications (1)

Publication Number Publication Date
GB956638A true GB956638A (en) 1964-04-29

Family

ID=3695611

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2018962A Expired GB956638A (en) 1961-05-26 1962-05-25 Improvements in or relating to audio frequency transformers

Country Status (1)

Country Link
GB (1) GB956638A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4311977A (en) * 1980-05-29 1982-01-19 Continental Electronics Mfg. Co. Output transformer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4311977A (en) * 1980-05-29 1982-01-19 Continental Electronics Mfg. Co. Output transformer

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