GB402081A - Improvements in and relating to tuning inductance units - Google Patents

Improvements in and relating to tuning inductance units

Info

Publication number
GB402081A
GB402081A GB14254/32A GB1425432A GB402081A GB 402081 A GB402081 A GB 402081A GB 14254/32 A GB14254/32 A GB 14254/32A GB 1425432 A GB1425432 A GB 1425432A GB 402081 A GB402081 A GB 402081A
Authority
GB
United Kingdom
Prior art keywords
wave
coils
screen
inductances
cambridge
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
GB14254/32A
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.)
ERNEST VICTOR ROOT
PYE RADIO Ltd
Original Assignee
ERNEST VICTOR ROOT
PYE RADIO 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 ERNEST VICTOR ROOT, PYE RADIO Ltd filed Critical ERNEST VICTOR ROOT
Priority to GB14254/32A priority Critical patent/GB402081A/en
Publication of GB402081A publication Critical patent/GB402081A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
    • H01F27/36—Electric or magnetic shields or screens
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
    • H01F27/36—Electric or magnetic shields or screens
    • H01F27/363—Electric or magnetic shields or screens made of electrically conductive material

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Structure Of Receivers (AREA)

Abstract

402,081. Inductances. PYE RADIO, Ltd., Cambridge, and ROOT, E. V., 176, Milton Road, Cambridge. May 19, 1932, No. 14254. [Class 37.] A tuning inductance unit comprises short-wave coils located in a U -shape screen 12, a further U-shape screen 13 being positioned between the coils and at an angle to their common axis. The legs of the screen 13 may be connected by strips of resistance material. Long-wave coils 14 with their common axis at rightangles to that of the shortwave coils have a screen 19 between them formed of short-circuited turns of hare wire. A wave-change switch 22, 24 is operated by a rod 26. One of the inductances may be tapped to provide a reaction winding and the aerial connected to this tapping, these connections being effected by the wave-change switch. The switch may have points to cut out the tuning unit and connect a gramophone pick-up.
GB14254/32A 1932-05-19 1932-05-19 Improvements in and relating to tuning inductance units Expired GB402081A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB14254/32A GB402081A (en) 1932-05-19 1932-05-19 Improvements in and relating to tuning inductance units

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB14254/32A GB402081A (en) 1932-05-19 1932-05-19 Improvements in and relating to tuning inductance units

Publications (1)

Publication Number Publication Date
GB402081A true GB402081A (en) 1933-11-20

Family

ID=10037812

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14254/32A Expired GB402081A (en) 1932-05-19 1932-05-19 Improvements in and relating to tuning inductance units

Country Status (1)

Country Link
GB (1) GB402081A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2722663A (en) * 1948-11-20 1955-11-01 Hartford Nat Bank & Trust Comp High frequency inductance coil assembly
US3083339A (en) * 1958-06-30 1963-03-26 Zenith Radio Corp Turret tuner

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2722663A (en) * 1948-11-20 1955-11-01 Hartford Nat Bank & Trust Comp High frequency inductance coil assembly
US3083339A (en) * 1958-06-30 1963-03-26 Zenith Radio Corp Turret tuner

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