JPS57206932A - Phase controlling device - Google Patents

Phase controlling device

Info

Publication number
JPS57206932A
JPS57206932A JP9273881A JP9273881A JPS57206932A JP S57206932 A JPS57206932 A JP S57206932A JP 9273881 A JP9273881 A JP 9273881A JP 9273881 A JP9273881 A JP 9273881A JP S57206932 A JPS57206932 A JP S57206932A
Authority
JP
Japan
Prior art keywords
circuit
filter
output
zero
higher harmonic
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.)
Pending
Application number
JP9273881A
Other languages
Japanese (ja)
Inventor
Takeshi Nakano
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.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works 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 Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP9273881A priority Critical patent/JPS57206932A/en
Publication of JPS57206932A publication Critical patent/JPS57206932A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/10—Regulating voltage or current
    • G05F1/12—Regulating voltage or current wherein the variable actually regulated by the final control device is ac
    • G05F1/40—Regulating voltage or current wherein the variable actually regulated by the final control device is ac using discharge tubes or semiconductor devices as final control devices
    • G05F1/44—Regulating voltage or current wherein the variable actually regulated by the final control device is ac using discharge tubes or semiconductor devices as final control devices semiconductor devices only
    • G05F1/45—Regulating voltage or current wherein the variable actually regulated by the final control device is ac using discharge tubes or semiconductor devices as final control devices semiconductor devices only being controlled rectifiers in series with the load
    • G05F1/455—Regulating voltage or current wherein the variable actually regulated by the final control device is ac using discharge tubes or semiconductor devices as final control devices semiconductor devices only being controlled rectifiers in series with the load with phase control

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Control Of Electrical Variables (AREA)
  • Power Conversion In General (AREA)

Abstract

PURPOSE:To prevent the variation of output electric power by detecting a zero- crossing signal from an output terminal of a filter interrupting higher harmonic included in AC power voltage. CONSTITUTION:A load 2 is connected to an AC power source 3 through an electric power controlling element 1 such as a thyristor to pass the basic frequency of AC power voltage, a filter 4 interrupting higher harmonic is connected to the AC power source 3 to input the output of the filter 4 to a zero-crossing detecting circuit 5 and a trigger circuit 6 setting up the output timing of a trigger pulse outputted from the element 1 on the basis of the output timing of the circuit 5 is also provided in a titled circuit. The input voltage of the zero-crossing circuit 5 is made to almost complete sine wave by using the filter 4, so that the ignition timing of the element 1 is prevented from variation due to the superposition of higher harmonic.
JP9273881A 1981-06-15 1981-06-15 Phase controlling device Pending JPS57206932A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9273881A JPS57206932A (en) 1981-06-15 1981-06-15 Phase controlling device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9273881A JPS57206932A (en) 1981-06-15 1981-06-15 Phase controlling device

Publications (1)

Publication Number Publication Date
JPS57206932A true JPS57206932A (en) 1982-12-18

Family

ID=14062754

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9273881A Pending JPS57206932A (en) 1981-06-15 1981-06-15 Phase controlling device

Country Status (1)

Country Link
JP (1) JPS57206932A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999018651A1 (en) * 1997-10-02 1999-04-15 Lutron Electronics Co., Inc. Phase controlled dimming system with active filter for preventing flickering and undesired intensity changes

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999018651A1 (en) * 1997-10-02 1999-04-15 Lutron Electronics Co., Inc. Phase controlled dimming system with active filter for preventing flickering and undesired intensity changes
US6091205A (en) * 1997-10-02 2000-07-18 Lutron Electronics Co., Inc. Phase controlled dimming system with active filter for preventing flickering and undesired intensity changes
AU738147B2 (en) * 1997-10-02 2001-09-13 Lutron Electronics Co., Inc. Phase controlled dimming system with active filter for preventing flickering and undesired intensity changes
US6380692B1 (en) 1997-10-02 2002-04-30 Lutron Electronics, Inc. Phase controlled dimming system with active filter for preventing flickering and undesired intensity changes
DE69812133T2 (en) 1997-10-02 2003-12-04 Lutron Electronics Co., Inc. PHASE-CONTROLLED DIMMER WITH ACTIVE FILTER TO PREVENT FLICKERS AND UNWANTED LIGHT INTENSITY CHANGES

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