FR1380108A - Device for generating a signal dependent on the existence of an electric oscillation of determined frequency - Google Patents

Device for generating a signal dependent on the existence of an electric oscillation of determined frequency

Info

Publication number
FR1380108A
FR1380108A FR960519A FR960519A FR1380108A FR 1380108 A FR1380108 A FR 1380108A FR 960519 A FR960519 A FR 960519A FR 960519 A FR960519 A FR 960519A FR 1380108 A FR1380108 A FR 1380108A
Authority
FR
France
Prior art keywords
existence
generating
determined frequency
signal dependent
electric oscillation
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
FR960519A
Other languages
French (fr)
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Priority to FR960519A priority Critical patent/FR1380108A/en
Application granted granted Critical
Publication of FR1380108A publication Critical patent/FR1380108A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L1/00—Devices along the route controlled by interaction with the vehicle or train
    • B61L1/18—Railway track circuits
    • B61L1/181—Details
    • B61L1/187—Use of alternating current
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L23/00—Control, warning or like safety means along the route or between vehicles or trains
    • B61L23/08—Control, warning or like safety means along the route or between vehicles or trains for controlling traffic in one direction only
    • B61L23/14—Control, warning or like safety means along the route or between vehicles or trains for controlling traffic in one direction only automatically operated
    • B61L23/16—Track circuits specially adapted for section blocking
    • B61L23/166—Track circuits specially adapted for section blocking using alternating current

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
FR960519A 1964-01-16 1964-01-16 Device for generating a signal dependent on the existence of an electric oscillation of determined frequency Expired FR1380108A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR960519A FR1380108A (en) 1964-01-16 1964-01-16 Device for generating a signal dependent on the existence of an electric oscillation of determined frequency

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR960519A FR1380108A (en) 1964-01-16 1964-01-16 Device for generating a signal dependent on the existence of an electric oscillation of determined frequency

Publications (1)

Publication Number Publication Date
FR1380108A true FR1380108A (en) 1964-11-27

Family

ID=8821036

Family Applications (1)

Application Number Title Priority Date Filing Date
FR960519A Expired FR1380108A (en) 1964-01-16 1964-01-16 Device for generating a signal dependent on the existence of an electric oscillation of determined frequency

Country Status (1)

Country Link
FR (1) FR1380108A (en)

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