GB547649A - Improvements in or relating to electric circuit control systems, particularly for illumination - Google Patents

Improvements in or relating to electric circuit control systems, particularly for illumination

Info

Publication number
GB547649A
GB547649A GB14674/41A GB1467441A GB547649A GB 547649 A GB547649 A GB 547649A GB 14674/41 A GB14674/41 A GB 14674/41A GB 1467441 A GB1467441 A GB 1467441A GB 547649 A GB547649 A GB 547649A
Authority
GB
United Kingdom
Prior art keywords
fading
voltage
control systems
nov
operating
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
GB14674/41A
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.)
Cutler Hammer Europe Ltd
Original Assignee
Igranic Electric Co Ltd
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 Igranic Electric Co Ltd filed Critical Igranic Electric Co Ltd
Publication of GB547649A publication Critical patent/GB547649A/en
Expired legal-status Critical Current

Links

Classifications

    • 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

  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)

Abstract

547,649. Control systems for lamps. IGRANIC ELECTRIC CO., Ltd. Nov. 14, 1941, No. 14674. Convention date, Nov. 14, 1940. [Class 38 (iv)] [Also in Group XXXVI] Resistance control.-In an illumination system having means for independent setting of lighting intensities of a number of lamp circuits 1, 2, as for example in Specification 538,575, and wherein potentiometers 9, 10 determine the voltage to be applied to voltage responsive means 3, 4 operating lamp controllers as in Specification 538,576, fading means such as a further potentiometer 11 being connected between two voltage controlling means so that the lighting intensity of a circuit may be progressively changed from one preset value to another, alternative mechanical means for operating the fading means at differing speeds may be selectively brought into action. A hand lever 16 may operate a sliding contact 11a along a potentiometer resistance 11 constituting the fading means or, by tilting it about an axis 17, 18, one lever may be engaged alternatively with a fork 21 or 22 whereby it is moved by mechanism 26 which may be operated by an electric motor 25. The forks are each frictionally driven from shafts 23, 24 respectively at different speeds and in directions determined by suitable energization of the motor. Several such fading means may be arranged in association with a common driving means.
GB14674/41A 1940-11-14 1941-11-14 Improvements in or relating to electric circuit control systems, particularly for illumination Expired GB547649A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US547649XA 1940-11-14 1940-11-14

Publications (1)

Publication Number Publication Date
GB547649A true GB547649A (en) 1942-09-04

Family

ID=21993377

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14674/41A Expired GB547649A (en) 1940-11-14 1941-11-14 Improvements in or relating to electric circuit control systems, particularly for illumination

Country Status (1)

Country Link
GB (1) GB547649A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2145586A (en) * 1983-08-25 1985-03-27 Lutron Electronics Co Lighting scene control panel and control circuit
US4727296A (en) * 1983-08-25 1988-02-23 Lutron Electronics Co., Inc. Lighting scene control panel and control circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2145586A (en) * 1983-08-25 1985-03-27 Lutron Electronics Co Lighting scene control panel and control circuit
US4727296A (en) * 1983-08-25 1988-02-23 Lutron Electronics Co., Inc. Lighting scene control panel and control circuit

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