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SG158771A1 - Energy saving circuit for electronic ballasts - Google Patents

Energy saving circuit for electronic ballasts

Info

Publication number
SG158771A1
SG158771A1 SG200805538-6A SG2008055386A SG158771A1 SG 158771 A1 SG158771 A1 SG 158771A1 SG 2008055386 A SG2008055386 A SG 2008055386A SG 158771 A1 SG158771 A1 SG 158771A1
Authority
SG
Singapore
Prior art keywords
microcontroller
energy saving
saving circuit
electronic ballasts
output type
Prior art date
Application number
SG200805538-6A
Inventor
Hui Wing Hong
Ng-Mok Sau Chin
Original Assignee
Singapore Polytechnic
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 Singapore Polytechnic filed Critical Singapore Polytechnic
Priority to SG200805538-6A priority Critical patent/SG158771A1/en
Publication of SG158771A1 publication Critical patent/SG158771A1/en

Links

Classifications

    • Y02B20/14—
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection

Landscapes

  • Discharge-Lamp Control Circuits And Pulse- Feed Circuits (AREA)

Abstract

The invention describes an energy saving circuit for operating electronic ballasts commonly classified as the non-constant output type or non-regulated output type for dimming fluorescent lamps, connected electrically between a power supply and the electronic ballast of the fluorescent lamp, comprising a step-down voltage transformer, bridge rectifier circuits and switches which is operated manually or controlled by a microcontroller or microprocessor. A second embodiment comprises a rectifier, a buck converter for stepping down the voltage, the converter being operated at a high frequency by a microcontroller. In both the embodiments, a Passive Infrared Detector connected to the microcontroller detects the presence of a person and is used to override the embedded lighting schedule.
SG200805538-6A 2008-07-17 2008-07-17 Energy saving circuit for electronic ballasts SG158771A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SG200805538-6A SG158771A1 (en) 2008-07-17 2008-07-17 Energy saving circuit for electronic ballasts

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SG200805538-6A SG158771A1 (en) 2008-07-17 2008-07-17 Energy saving circuit for electronic ballasts

Publications (1)

Publication Number Publication Date
SG158771A1 true SG158771A1 (en) 2010-02-26

Family

ID=41716833

Family Applications (1)

Application Number Title Priority Date Filing Date
SG200805538-6A SG158771A1 (en) 2008-07-17 2008-07-17 Energy saving circuit for electronic ballasts

Country Status (1)

Country Link
SG (1) SG158771A1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5498931A (en) * 1990-03-10 1996-03-12 Tlg Plc Method for automatic switching and control of lighting
US5612594A (en) * 1995-09-13 1997-03-18 C-P-M Lighting, Inc. Electronic dimming ballast feedback control scheme
US6072284A (en) * 1998-07-20 2000-06-06 Duro-Test Corporation Three-way compact fluorescent lamp ballast and lamp holder incorporating same

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5498931A (en) * 1990-03-10 1996-03-12 Tlg Plc Method for automatic switching and control of lighting
US5612594A (en) * 1995-09-13 1997-03-18 C-P-M Lighting, Inc. Electronic dimming ballast feedback control scheme
US6072284A (en) * 1998-07-20 2000-06-06 Duro-Test Corporation Three-way compact fluorescent lamp ballast and lamp holder incorporating same

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