GB451345A - Improvements in or relating to modulated carrier wave receivers - Google Patents

Improvements in or relating to modulated carrier wave receivers

Info

Publication number
GB451345A
GB451345A GB34747/34A GB3474734A GB451345A GB 451345 A GB451345 A GB 451345A GB 34747/34 A GB34747/34 A GB 34747/34A GB 3474734 A GB3474734 A GB 3474734A GB 451345 A GB451345 A GB 451345A
Authority
GB
United Kingdom
Prior art keywords
tuning
dec
remote point
push
contacts
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
GB34747/34A
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
BAE Systems Electronics Ltd
Original Assignee
Marconis Wireless Telegraph Co Ltd
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
Application filed by Marconis Wireless Telegraph Co Ltd, Marconi Co Ltd filed Critical Marconis Wireless Telegraph Co Ltd
Publication of GB451345A publication Critical patent/GB451345A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/06—Arrangements or circuits for starting the arc, e.g. by generating ignition voltage, or for stabilising the arc
    • B23K9/067—Starting the arc
    • B23K9/0672—Starting the arc without direct contact between electrodes
    • B23K9/0678—Ionization of the arc gap by means of an auxiliary arc
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J3/00—Continuous tuning
    • H03J3/02—Details
    • H03J3/12—Electrically-operated arrangements for indicating correct tuning

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Transmitters (AREA)
  • Selective Calling Equipment (AREA)

Abstract

451,345. Distant - control systems. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Electra House, Victoria Embankment, London.-(Assignees of Braden, R. A. ; 509, Cedar Avenue, Collingswood, New Jersey, U.S.A.) Dec. 3, 1934, No. 34747. Convention date, Dec. 1, 1933. [Class 40 (i)] [See also Group XL] The Specification as open to inspection under Sect. 91 describes an arrangement wherein selection, from a remote point or manually, of predetermined broadcasting stations is effected by means of a disc 589, with adjustable contacts 591, mounted on the tuning spindle. The tuning member is driven by an electric motor 337 controlled by forward and reversing push-buttons 343, 341, a magnetic brake 135 preventing further rotation of the tuning member when the contacts 591, 597 close. The push-button 345 de-energizes the brake 135 when it is desired to tune to another station. Indication of the tuning dial and pointer position may be given at the remote point by a calibrated milliammeter 511 in circuit with a variable resistance 517 the slider of which is actuated by the tuning spindle of the receiver. This subject-matter does not appear in the Specification as accepted.
GB34747/34A 1933-12-01 1934-12-03 Improvements in or relating to modulated carrier wave receivers Expired GB451345A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US451345XA 1933-12-01 1933-12-01

Publications (1)

Publication Number Publication Date
GB451345A true GB451345A (en) 1936-08-04

Family

ID=21936173

Family Applications (1)

Application Number Title Priority Date Filing Date
GB34747/34A Expired GB451345A (en) 1933-12-01 1934-12-03 Improvements in or relating to modulated carrier wave receivers

Country Status (5)

Country Link
BE (1) BE451345A (en)
DE (1) DE701720C (en)
FR (1) FR781707A (en)
GB (1) GB451345A (en)
NL (1) NL43698C (en)

Also Published As

Publication number Publication date
FR781707A (en) 1935-05-21
BE451345A (en)
DE701720C (en) 1941-01-23
NL43698C (en)

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