GB1077512A - Electron tube shield - Google Patents

Electron tube shield

Info

Publication number
GB1077512A
GB1077512A GB4112364A GB4112364A GB1077512A GB 1077512 A GB1077512 A GB 1077512A GB 4112364 A GB4112364 A GB 4112364A GB 4112364 A GB4112364 A GB 4112364A GB 1077512 A GB1077512 A GB 1077512A
Authority
GB
United Kingdom
Prior art keywords
shield
tube
electron tube
tube shield
neighbourhood
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
GB4112364A
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.)
3M Co
Original Assignee
Minnesota Mining and Manufacturing Co
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 Minnesota Mining and Manufacturing Co filed Critical Minnesota Mining and Manufacturing Co
Publication of GB1077512A publication Critical patent/GB1077512A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K9/00—Screening of apparatus or components against electric or magnetic fields
    • H05K9/0007—Casings
    • H05K9/002—Casings with localised screening

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
  • Elimination Of Static Electricity (AREA)

Abstract

1,077,512. Discharge apparatus. MINNESOTA MINING & MANUFACTURING CO. Oct. 8, 1964 [Nov. 29, 1963], No. 41123/64. Heading H1D. An electric discharge tube (10) in the neighbourhood of a loud-speaker is protected by an acoustic-electrostatic shield (16) of resilient rubber vulcanizate having sufficient carbon black dispersed therein to provide an electrical resistivity of less than 10<SP>8</SP> ohm. cm. and a durometer reading of between 30 and 80. The walls of the cylindrical shield are preferably spaced from the tube envelope, with its open end fitting over a metal screen (12) of the tube socket (11), and is held in place by dimples (19); alternatively, the shield may be earthed through a capacitor or a resistor.
GB4112364A 1963-11-29 1964-10-08 Electron tube shield Expired GB1077512A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US32698463A 1963-11-29 1963-11-29

Publications (1)

Publication Number Publication Date
GB1077512A true GB1077512A (en) 1967-08-02

Family

ID=23274622

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4112364A Expired GB1077512A (en) 1963-11-29 1964-10-08 Electron tube shield

Country Status (3)

Country Link
DE (1) DE1234863B (en)
FR (1) FR1414239A (en)
GB (1) GB1077512A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015218066A1 (en) * 2015-09-21 2017-03-23 Sennheiser Electronic Gmbh & Co. Kg Hi-Fi audio tube amplifier

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2899483A (en) * 1959-08-11 Electron tube protective device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015218066A1 (en) * 2015-09-21 2017-03-23 Sennheiser Electronic Gmbh & Co. Kg Hi-Fi audio tube amplifier
DE102015218066B4 (en) 2015-09-21 2018-10-11 Sennheiser Electronic Gmbh & Co. Kg Hi-Fi audio tube amplifier

Also Published As

Publication number Publication date
DE1234863B (en) 1967-02-23
FR1414239A (en) 1965-10-15

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