FR907447A - Device for examining the general efficiency of a device or a variable efficiency circuit with the naked eye - Google Patents

Device for examining the general efficiency of a device or a variable efficiency circuit with the naked eye

Info

Publication number
FR907447A
FR907447A FR907447DA FR907447A FR 907447 A FR907447 A FR 907447A FR 907447D A FR907447D A FR 907447DA FR 907447 A FR907447 A FR 907447A
Authority
FR
France
Prior art keywords
efficiency
examining
naked eye
circuit
variable
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
Other languages
French (fr)
Inventor
Charles Boutelleau
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.)
MELODIUM SOC
Original Assignee
MELODIUM SOC
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 MELODIUM SOC filed Critical MELODIUM SOC
Application granted granted Critical
Publication of FR907447A publication Critical patent/FR907447A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D7/00—Indicating measured values

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR907447D 1944-04-18 1944-04-18 Device for examining the general efficiency of a device or a variable efficiency circuit with the naked eye Expired FR907447A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR907447T 1944-04-18

Publications (1)

Publication Number Publication Date
FR907447A true FR907447A (en) 1946-03-12

Family

ID=9406309

Family Applications (1)

Application Number Title Priority Date Filing Date
FR907447D Expired FR907447A (en) 1944-04-18 1944-04-18 Device for examining the general efficiency of a device or a variable efficiency circuit with the naked eye

Country Status (1)

Country Link
FR (1) FR907447A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2781736A (en) * 1955-06-07 1957-02-19 Bell & Howell Co Indicating means

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2781736A (en) * 1955-06-07 1957-02-19 Bell & Howell Co Indicating means

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