FR681961A - Veilleur photoélectrique - Google Patents

Veilleur photoélectrique

Info

Publication number
FR681961A
FR681961A FR681961DA FR681961A FR 681961 A FR681961 A FR 681961A FR 681961D A FR681961D A FR 681961DA FR 681961 A FR681961 A FR 681961A
Authority
FR
France
Prior art keywords
watchman
photoelectric
photoelectric watchman
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
English (en)
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.)
CEMA SOC
Original Assignee
CEMA 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 CEMA SOC filed Critical CEMA SOC
Application granted granted Critical
Publication of FR681961A publication Critical patent/FR681961A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
    • H01H47/22—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for supplying energising current for relay coil
    • H01H47/24—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for supplying energising current for relay coil having light-sensitive input
FR681961D 1929-01-12 1929-01-12 Veilleur photoélectrique Expired FR681961A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR681961T 1929-01-12

Publications (1)

Publication Number Publication Date
FR681961A true FR681961A (fr) 1930-05-21

Family

ID=9023084

Family Applications (1)

Application Number Title Priority Date Filing Date
FR681961D Expired FR681961A (fr) 1929-01-12 1929-01-12 Veilleur photoélectrique

Country Status (1)

Country Link
FR (1) FR681961A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2473893A (en) * 1941-09-19 1949-06-21 Westinghouse Electric Corp Object detecting and indicating device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2473893A (en) * 1941-09-19 1949-06-21 Westinghouse Electric Corp Object detecting and indicating device

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