GB451387A - Improvements in or relating to mobile sound reproducing apparatus - Google Patents

Improvements in or relating to mobile sound reproducing apparatus

Info

Publication number
GB451387A
GB451387A GB27009/35A GB2700935A GB451387A GB 451387 A GB451387 A GB 451387A GB 27009/35 A GB27009/35 A GB 27009/35A GB 2700935 A GB2700935 A GB 2700935A GB 451387 A GB451387 A GB 451387A
Authority
GB
United Kingdom
Prior art keywords
relating
reproducing apparatus
sound reproducing
mobile sound
merchantville
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
GB27009/35A
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.)
Marconis Wireless Telegraph Co Ltd
Original Assignee
Marconis Wireless Telegraph 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
Application filed by Marconis Wireless Telegraph Co Ltd filed Critical Marconis Wireless Telegraph Co Ltd
Publication of GB451387A publication Critical patent/GB451387A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers without distortion of the input signal
    • H03G3/20—Automatic control
    • H03G3/22—Automatic control in amplifiers having discharge tubes
    • H03G3/24—Control dependent upon ambient noise level or sound level

Landscapes

  • Control Of Position, Course, Altitude, Or Attitude Of Moving Bodies (AREA)
  • Transceivers (AREA)

Abstract

451,387. Electromagnetic switches. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Electra House, Victoria Embankment, London.-(Assignees of Wolff, I. ; 41, West Walnut Avenue, Merchantville, New Jersey, U.S.A.) Sept. 30, 1935, No. 27009. Convention date, Oct. 31, 1934. [A Specification was laid open to inspection under Sect. 91 of the Acts, March 30, 1936.] [Class 38 (v)] [See also Groups XL and XXXIX] A potentiometer 75 is operated by an eddy current disc 81 rotated by a revolving magnet 80 driven by a flexible shaft 78.
GB27009/35A 1934-10-31 1935-09-30 Improvements in or relating to mobile sound reproducing apparatus Expired GB451387A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US451387XA 1934-10-31 1934-10-31

Publications (1)

Publication Number Publication Date
GB451387A true GB451387A (en) 1936-08-05

Family

ID=21936190

Family Applications (1)

Application Number Title Priority Date Filing Date
GB27009/35A Expired GB451387A (en) 1934-10-31 1935-09-30 Improvements in or relating to mobile sound reproducing apparatus

Country Status (1)

Country Link
GB (1) GB451387A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2207533A (en) * 1987-07-31 1989-02-01 Suzuki Motor Co Audio alarm outputting device for outboard engine
GB2256102A (en) * 1991-05-24 1992-11-25 Robin Middlemass Howie Automatic level controller for in-vehicle sound system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2207533A (en) * 1987-07-31 1989-02-01 Suzuki Motor Co Audio alarm outputting device for outboard engine
GB2207533B (en) * 1987-07-31 1992-03-18 Suzuki Motor Co Audio alarm outputting device for outboard engine
GB2256102A (en) * 1991-05-24 1992-11-25 Robin Middlemass Howie Automatic level controller for in-vehicle sound system

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