GB1485796A - Electronic brightness control for room lighting - Google Patents

Electronic brightness control for room lighting

Info

Publication number
GB1485796A
GB1485796A GB5404074A GB5404074A GB1485796A GB 1485796 A GB1485796 A GB 1485796A GB 5404074 A GB5404074 A GB 5404074A GB 5404074 A GB5404074 A GB 5404074A GB 1485796 A GB1485796 A GB 1485796A
Authority
GB
United Kingdom
Prior art keywords
phase control
dec
control
phase
current source
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
GB5404074A
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.)
TDK Micronas GmbH
ITT Inc
Original Assignee
Deutsche ITT Industries GmbH
ITT Industries Inc
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 Deutsche ITT Industries GmbH, ITT Industries Inc filed Critical Deutsche ITT Industries GmbH
Publication of GB1485796A publication Critical patent/GB1485796A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
    • H02M5/02—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc
    • H02M5/04—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters
    • H02M5/22—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M5/25—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means
    • H02M5/257—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only
    • H02M5/2573—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only with control circuit
    • H02M5/2576—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only with control circuit with digital control
    • 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
    • H05B39/00—Circuit arrangements or apparatus for operating incandescent light sources
    • H05B39/04—Controlling
    • H05B39/08—Controlling by shifting phase of trigger voltage applied to gas-filled controlling tubes also in controlled semiconductor devices
    • H05B39/083—Controlling by shifting phase of trigger voltage applied to gas-filled controlling tubes also in controlled semiconductor devices by the variation-rate of light intensity
    • H05B39/085—Controlling by shifting phase of trigger voltage applied to gas-filled controlling tubes also in controlled semiconductor devices by the variation-rate of light intensity by touch control

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Electronic Switches (AREA)

Abstract

1485796 Touch responsive switching systems ITT INDUSTRIES Inc 13 Dec 1974 [14 Dec 1973 54040/74 Heading G1N [Also in Division H2] An electronic lamp brightness control arrangement comprises a semi-conductor switching device in a main current path which is periodically switched on and off via a phase control circuit whose angle of current flow can be varied by means of a control element which has a plurality of finger touch contact panels at least one or each of which serves as an on-off switch, and are associated with control or glow lamps or pilot lights. In the dimmer circuit of Fig. 3 an A.C. voltage stabilizer consists of two opposed Zener diodes Z1, Z2, and a bidirectional constant current source controlled by the touch contact panels 1 charges the phase control capacitor Cc and controls the setting of the phase angle. The bi-directional current source includes transistors T1, T2 and one of the potentiometers R1, R2, R3 as well as a rectified GB producing a necessary supply voltage on Cb for a digital circuit E. It is via the base electrodes of the transistors Tr that the respective potentiometer R is switched on or off by a panel 1 to vary the charging or discharging current of the phase control capacitor Cc.
GB5404074A 1973-12-14 1974-12-13 Electronic brightness control for room lighting Expired GB1485796A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19732362225 DE2362225B2 (en) 1973-12-14 1973-12-14 Device for the brightness selection of the room lighting

Publications (1)

Publication Number Publication Date
GB1485796A true GB1485796A (en) 1977-09-14

Family

ID=5900781

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5404074A Expired GB1485796A (en) 1973-12-14 1974-12-13 Electronic brightness control for room lighting

Country Status (2)

Country Link
DE (1) DE2362225B2 (en)
GB (1) GB1485796A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2154322A (en) * 1984-02-14 1985-09-04 Guy Darell Unwin Switches for standard and table lamps
GB2163613A (en) * 1984-08-21 1986-02-26 Crabtree Electrical Ind Ltd Power control device
GB2330704A (en) * 1997-10-21 1999-04-28 Timeguard Limited Semiconductor AC switch units

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH655219A5 (en) * 1981-06-05 1986-03-27 Giuseppe Baccanelli DEVICE making it possible to ECONOMIZE ENERGY ELECTRIC LIGHTING.
DE59102311D1 (en) * 1990-04-17 1994-09-01 Siemens Ag Device for the stepless control of electrical consumers according to the phase gating principle, in particular brightness controller and use of such a device.
DE59102312D1 (en) * 1990-04-17 1994-09-01 Siemens Ag Device for the stepless control of electrical consumers according to the phase gating principle, in particular brightness controller and use of such a device.

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2154322A (en) * 1984-02-14 1985-09-04 Guy Darell Unwin Switches for standard and table lamps
GB2163613A (en) * 1984-08-21 1986-02-26 Crabtree Electrical Ind Ltd Power control device
GB2330704A (en) * 1997-10-21 1999-04-28 Timeguard Limited Semiconductor AC switch units

Also Published As

Publication number Publication date
DE2362225A1 (en) 1975-06-26
DE2362225B2 (en) 1980-07-03

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee