GB259015A - Improvements in or relating to electrical transformers suitable for use with thermionic valve systems - Google Patents

Improvements in or relating to electrical transformers suitable for use with thermionic valve systems

Info

Publication number
GB259015A
GB259015A GB951725A GB951725A GB259015A GB 259015 A GB259015 A GB 259015A GB 951725 A GB951725 A GB 951725A GB 951725 A GB951725 A GB 951725A GB 259015 A GB259015 A GB 259015A
Authority
GB
United Kingdom
Prior art keywords
spools
spool
windings
wound
enable
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
GB951725A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB951725A priority Critical patent/GB259015A/en
Publication of GB259015A publication Critical patent/GB259015A/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F19/00Fixed transformers or mutual inductances of the signal type
    • H01F19/02Audio-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 Of Transformers For General Uses (AREA)

Abstract

259,015. Graham, E. A., and Paddle, L. H. April 9, 1925. Transformers. - In iron-cored electric transformers for use in wireless apparatus employing thermionic valves, the primary and secondary windings 8, 2 are wound on detachable concentric spools 7, 1 of insulating material to enable a damaged winding to be replaced or to enable the transformation ratio to be varied by replacing an existing winding by one having a different number of turns. The spools may be formed with integral spacing flanges 4 for dividing the windings into sections, or each spool may be built up of a number of separate sections such as 4<a>, 4<b>, 4<c>, Fig. 3, or 10, Fig. 6 on which separate sections of the windings are wound. The spools are provided with shoulders against which the end flanges 3<a>, Fig. 3. and 6<a>. Fig. 6, abut, and the outer spool is provided with an inwardly extending flange 3<b> against which the inner spool abuts. The inner spool is provided with a hole of square cross-section through which the centre limb of the core extends. and an insulating bush may be provided. The core comprises complementary sets of E-shaped laminations formed with ends cut as shown in Fig. 7 adjacent layers of stampings being reversed so as to break joint. The laminations are clamped together between end plates or between a pair of channel-shaped members 11, Fig. 1, by bolts 9*, and a non-magnetic casing 12 which may be corrugated and carries insulated terminals 13 is provided.
GB951725A 1925-04-09 1925-04-09 Improvements in or relating to electrical transformers suitable for use with thermionic valve systems Expired GB259015A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB951725A GB259015A (en) 1925-04-09 1925-04-09 Improvements in or relating to electrical transformers suitable for use with thermionic valve systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB951725A GB259015A (en) 1925-04-09 1925-04-09 Improvements in or relating to electrical transformers suitable for use with thermionic valve systems

Publications (1)

Publication Number Publication Date
GB259015A true GB259015A (en) 1926-10-11

Family

ID=9873491

Family Applications (1)

Application Number Title Priority Date Filing Date
GB951725A Expired GB259015A (en) 1925-04-09 1925-04-09 Improvements in or relating to electrical transformers suitable for use with thermionic valve systems

Country Status (1)

Country Link
GB (1) GB259015A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE965344C (en) * 1941-01-28 1957-06-06 Aeg Iron core for magnetic purposes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE965344C (en) * 1941-01-28 1957-06-06 Aeg Iron core for magnetic purposes

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