GB630470A - Improvements in or relating to stage or theatre lighting installations - Google Patents
Improvements in or relating to stage or theatre lighting installationsInfo
- Publication number
- GB630470A GB630470A GB30240/47A GB3024047A GB630470A GB 630470 A GB630470 A GB 630470A GB 30240/47 A GB30240/47 A GB 30240/47A GB 3024047 A GB3024047 A GB 3024047A GB 630470 A GB630470 A GB 630470A
- Authority
- GB
- United Kingdom
- Prior art keywords
- switches
- circuit
- illumination
- stage
- change
- 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
Links
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/004—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes to give the appearance of moving signs
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
- H05B47/155—Coordinated control of two or more light sources
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
630,470. Control systems for stage and theatre lighting. ETABLISSEMENTS A. DE BACKER SOC. ANON. Nov. 13, 1947, No. 30240. Convention date, Dec. 27, 1946. [Class 38 (iv)] In a system in which a common control means A actuates illumination control contacts C<1>, C<2> in unison, change-over switches, such as OS<1>, are provided in each circuit or sub-circuit so that the sense in which the illumination is varied may be determined independently for each circuit. As shown, each switch connects the return lead of a circuit selectively to one or other of the leads E<1>, E<2> supplying the autotransformer winding T. The switches may be remotely controlled by manual switches such as BS<1> installed adjacent to the respective mechanical control elements S<1>, S<2>. Dimmers may be used in association with the changeover switches to prevent undesired sudden changes in illumination. Direct or rectified current may be used for the operating circuits of the change-over switches, to avoid noise.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL630470X | 1946-12-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB630470A true GB630470A (en) | 1949-10-13 |
Family
ID=19788719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB30240/47A Expired GB630470A (en) | 1946-12-27 | 1947-11-13 | Improvements in or relating to stage or theatre lighting installations |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB630470A (en) |
-
1947
- 1947-11-13 GB GB30240/47A patent/GB630470A/en not_active Expired
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