FR2454120A1 - Procede et dispositif de commutation d'un eclairage en relation avec un projecteur - Google Patents
Procede et dispositif de commutation d'un eclairage en relation avec un projecteurInfo
- Publication number
- FR2454120A1 FR2454120A1 FR7905401A FR7905401A FR2454120A1 FR 2454120 A1 FR2454120 A1 FR 2454120A1 FR 7905401 A FR7905401 A FR 7905401A FR 7905401 A FR7905401 A FR 7905401A FR 2454120 A1 FR2454120 A1 FR 2454120A1
- Authority
- FR
- France
- Prior art keywords
- projector
- supply
- series
- resistor
- detection
- 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.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B29/00—Combinations of cameras, projectors or photographic printing apparatus with non-photographic non-optical apparatus, e.g. clocks or weapons; Cameras having the shape of other objects
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Projection Apparatus (AREA)
Abstract
LA PRESENTE INVENTION CONCERNE UN PROCEDE ET UN DISPOSITIF DE COMMUTATION D'UN ECLAIRAGE EN RELATION AVEC UN PROJECTEUR. CE DISPOSITIF COMPREND DES BORNES SECTEUR 10 ET 11, UN CIRCUIT DEPHASEUR 18, UN CIRCUIT D'ECHANTILLONNAGE DU COURANT TRAVERSANT UN PROJECTEUR 12 AU VOISINAGE DES MAXIMA DE LA TENSION D'ALIMENTATION; UN DETECTEUR DE SEUIL 19 ET UN CIRCUIT DE COMMANDE D'INTERRUPTION 20. AINSI, UN TRIAC EN SERIE AVEC UN MOYEN D'ECLAIRAGE 14 EST COMMANDE EN FONCTION DU COURANT TRAVERSANT LE PROJECTEUR AU VOISINAGE DES MAXIMA DE LA TENSION D'ALIMENTATION. APPLICATION AUX PROJECTEURS DE CINEMA A USAGE DOMESTIQUE.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7905401A FR2454120A1 (fr) | 1979-03-01 | 1979-03-01 | Procede et dispositif de commutation d'un eclairage en relation avec un projecteur |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7905401A FR2454120A1 (fr) | 1979-03-01 | 1979-03-01 | Procede et dispositif de commutation d'un eclairage en relation avec un projecteur |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2454120A1 true FR2454120A1 (fr) | 1980-11-07 |
FR2454120B1 FR2454120B1 (fr) | 1981-12-11 |
Family
ID=9222652
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7905401A Granted FR2454120A1 (fr) | 1979-03-01 | 1979-03-01 | Procede et dispositif de commutation d'un eclairage en relation avec un projecteur |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2454120A1 (fr) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2306051A1 (de) * | 1972-03-09 | 1973-09-20 | Hauser Raimund | Schaltungsanordnung |
US3938129A (en) * | 1974-08-21 | 1976-02-10 | General Electric Company | Power line data transmission system |
-
1979
- 1979-03-01 FR FR7905401A patent/FR2454120A1/fr active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2306051A1 (de) * | 1972-03-09 | 1973-09-20 | Hauser Raimund | Schaltungsanordnung |
US3938129A (en) * | 1974-08-21 | 1976-02-10 | General Electric Company | Power line data transmission system |
Also Published As
Publication number | Publication date |
---|---|
FR2454120B1 (fr) | 1981-12-11 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |