FR12693E - Speed indicating device for direct current or alternating current motors - Google Patents

Speed indicating device for direct current or alternating current motors

Info

Publication number
FR12693E
FR12693E FR12693A FR12693DA FR12693E FR 12693 E FR12693 E FR 12693E FR 12693 A FR12693 A FR 12693A FR 12693D A FR12693D A FR 12693DA FR 12693 E FR12693 E FR 12693E
Authority
FR
France
Prior art keywords
indicating device
speed indicating
direct current
alternating current
motors
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
FR12693A
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.)
Ateliers De Constructions Electriques Du Nord Et De Lest
Original Assignee
Ateliers De Constructions Electriques Du Nord Et De Lest
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 Ateliers De Constructions Electriques Du Nord Et De Lest filed Critical Ateliers De Constructions Electriques Du Nord Et De Lest
Application granted granted Critical
Publication of FR12693E publication Critical patent/FR12693E/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
    • G01R23/02—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR12693A 1908-03-04 1909-08-14 Speed indicating device for direct current or alternating current motors Expired FR12693E (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR388080T 1908-03-04
FR12693T 1909-08-14

Publications (1)

Publication Number Publication Date
FR12693E true FR12693E (en) 1910-10-26

Family

ID=1354856

Family Applications (1)

Application Number Title Priority Date Filing Date
FR12693A Expired FR12693E (en) 1908-03-04 1909-08-14 Speed indicating device for direct current or alternating current motors

Country Status (1)

Country Link
FR (1) FR12693E (en)

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