EP1937038A2 - Leistungsregler - Google Patents

Leistungsregler Download PDF

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Publication number
EP1937038A2
EP1937038A2 EP20070107040 EP07107040A EP1937038A2 EP 1937038 A2 EP1937038 A2 EP 1937038A2 EP 20070107040 EP20070107040 EP 20070107040 EP 07107040 A EP07107040 A EP 07107040A EP 1937038 A2 EP1937038 A2 EP 1937038A2
Authority
EP
European Patent Office
Prior art keywords
terminal
resistor
trigger
coupled
diode
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.)
Withdrawn
Application number
EP20070107040
Other languages
English (en)
French (fr)
Inventor
Pun King Kwok
Chow Wah Chun
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.)
Advanced Dimming Technology Ltd
Original Assignee
Advanced Dimming Technology 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 Advanced Dimming Technology Ltd filed Critical Advanced Dimming Technology Ltd
Publication of EP1937038A2 publication Critical patent/EP1937038A2/de
Withdrawn legal-status Critical Current

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    • 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
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/36—Controlling
    • H05B41/38—Controlling the intensity of light
    • H05B41/39—Controlling the intensity of light continuously
    • H05B41/392—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor
    • H05B41/3921—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor with possibility of light intensity variations
    • H05B41/3924—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor with possibility of light intensity variations by phase control, e.g. using a triac

Definitions

  • the present invention relates generally to a power regulator. More specifically, the present invention relates to a power regulator for a fluorescent lamp or an energy-saving lamp.
  • the current fluorescent lamp ballasts and energy-saving lamp dimmers unlike the traditional incandescent lamp dimmers which can be directly installed, have to be rewired before they can be put into use since a neutral line is a must and therefore cause a bit inconvenient to users.
  • a traditional power regulator where a two-way thyristor (Triac) is used as electronic switch, the power can not be conducted when the supply voltage reaches zero, and once the power is conducted, the connection of the thyristor will become intermittent, even out of control due to the resonance caused by said two-way thyristor (Triac).
  • Triac two-way thyristor
  • To drive the thyristor several milliamperes or above will be necessary, which either fluorescent lamps or energy-saving lamps can provide.
  • Fluorescent lamps and energy-saving lamps thus will not achieve the function of power regulation, especially for lamps with small power under 25 Watt.
  • the prior art is complicated and using unnecessary elements in the process of sampling circuit, delayed control circuit and propelling circuits, which is really power-consume.
  • a neutral line is necessary in order to operate the aforementioned circuits.
  • the present invention provides a circuit with relatively simple design by adopting a small scale CMOS IC as the control circuit.
  • CMOS IC has the advantage of low power consumption.
  • the invention is to achieve stable power regulation in low power inductive loads with relatively large internal resistance.
  • the technical scheme of the present invention is to adopt a power regulator, comprising a full bridge rectification circuit composed of diodes D 1 to D 4 and a filter capacitor C 5 connected in parallel to the input terminals of diodes D 1 and D 4 , said power regulator connected in series between power supply and load.
  • Said power regulator has two triggers U 1 and U 2 connected in series, and said two triggers U 1 and U 2 are connected with peripheral components R 3 , R 4 , C 2 , C 3 , R 7 , D 7 and VR 1 to construct a triggering signal processing circuit, and the output terminal of said triggering signal processing circuit is connected in series with a delay circuit composed of another trigger U 3 and its peripheral components R 5 and C 4 , and the output terminal of said delay circuit is connected in series with a drive constructed by trigger U 4 and its peripheral component Q 1 .
  • a short-circuit protection circuit is also included in said power regulator.
  • a current limiting resistor R 1 , a diode D 5 and a capacitor C 1 are connected in series between the positive terminal and the negative terminal of said full bridge rectification circuit; a voltage stabilizing diode ZD 1 and a resistor R 2 are connected in parallel to the negative output terminal of the full bridge rectification circuit; said full bridge rectification circuit is connected between capacitor C 1 and diode D 5 ; one terminal of a resistor R 3 is connected in parallel between the negative output terminal of the full bridge rectification circuit and another terminal of said resistor R 3 is connected between said diode D 5 and resistor R 1 .
  • said triggering signal processing circuit is composed of trigger U 1 and trigger U 2 connected in parallel; one input terminal of trigger U 1 is connected between resistors R 1 and R 3 , and another input terminal of trigger U 1 is coupled between resistor R 4 and capacitor C 2 ; another terminal of resistor R 4 is coupled between diode D 5 and capacitor C 1 ; another terminal of capacitor C 2 is coupled with the negative output terminal of the full bridge rectification circuit; resistor C 3 is connected between the output terminal of trigger U 1 and one input terminal of trigger U 2 ; a resistor is connected in parallel between the output negative terminal of the full bridge rectification circuit and the input terminal of said trigger U 2 and a diode D 7 is coupled in reversal parallel between the output negative terminal of the full bridge rectification circuit and the input terminal of said trigger U 2 ; said resistor in parallel is composed of a varistor VR 1 and a resistor R 7 connected in series; the positive terminal of said diode D 6 is coupled between resistor R 4 and capacitor C 2 , and the negative terminal
  • said delay circuit is composed of trigger U 3 with its two input terminals connected between capacitor C 4 and resistor R 5 ; the other terminal of said capacitor C 4 is coupled between diode D 5 and capacitor C 1 ; the other terminal of said resistor R 5 is coupled with the negative output terminal of the full bridge rectification circuit; the output terminal of said trigger U 3 is coupled with the input terminal of trigger U 4 .
  • said drive has another input terminal of the trigger U 4 coupled with the output terminal of the trigger U 2 , and the output terminal of said driving trigger U 4 coupled with a resistor R 6 , is connected to the collector of a triode Q 1 ; the emitter of said triode Q 1 coupled in serial with a resistor R 10 , is connected to the negative output terminal of the full bridge rectification circuit.
  • said short-circuit protection circuit has one terminal of resistor R 8 coupled between diode D 5 and capacitor C 1 , and the other terminal is coupled in series with the positive terminal of a diode thyristor Q 2 ; the negative terminal of said diode thyristor Q 2 is coupled with the negative output terminal of the full bridge rectification circuit; the control electrode of said diode thyristor Q 2 is coupled between the emitter of triode Q 1 and resistor R 10 ; a resistor R 9 is connected in series between the control electrode of said diode thyristor Q 2 and the emitter of said triode Q 1 ; the input terminal of trigger U 2 is connected between resistor R 8 and the positive terminal of said diode thyristor Q 2 .
  • a voltmeter V 1 is coupled in parallel between the positive terminal and the negative terminal of said full bridge rectification circuit.
  • the invention achieves the following effects: the circuit structure is simple and the power consumption is extremely small.
  • the power regulator can be connected in series between the electrical appliance and the power supply to achieve effective regulation of lamplight luminance.
  • the invention uses a power switching element (metal-oxide-semiconductor field-effect transistor) as electronic switch and a small scale extremely-small-power-consumption trigger as control circuit; when power voltage crosses zero, conduction will be triggered and delayed for a period of time, which enables the charging and energy-storing and then the disconnection of electronic ballast; power regulation is achieved by adjusting the energy-storing time, hence the regulation of the luminance of the fluorescent lamp.
  • Said power regulator not only regulates power of inductive load, but also resistant load.
  • a power regulator in accordance with the present invention is connected in series between a power supply and a fluorescent lamp or an incandescent lamp, a full bridge rectification circuit constituted by diodes D 1 to D 4 and a filter capacitor C 5 connected in parallel with the input terminals of diodes D 1 and D 4 .
  • Said power regulator comprises two triggers U 1 and U 2 connected in series; said two triggers U 1 and U 2 connected with the peripheral components R 3 , R 4 , C 2 , C 3 , R 7 , D 7 , VR 1 constitutes a triggering signal processing circuit; the output terminal of said triggering signal processing circuit is connected in series with the delay circuit constituted by trigger U 3 and its peripheral components R 5 and C 4 .
  • the output terminal of said delay circuit is coupled in series with the drive constituted by trigger U 4 and its peripheral component Q 1 .
  • a short-circuit protection circuit is also included in said power regulator.
  • a current limiting resistor R 1 , a diode D 5 and a capacitor C 1 are connected in series between the positive terminal and the negative terminal of said full bridge rectification circuit; a voltage stabilizing diode ZD 1 and a resistor R 2 are connected in parallel to the negative output terminal of the full bridge rectification circuit between capacitor C 1 and diode D 5 .
  • a resistor R 3 is connected in parallel between diode D 5 and resistor R 1 , and the negative output terminal of the full bridge rectification circuit.
  • Said triggering signal processing circuit is composed of trigger U 1 and trigger U 2 connected in parallel; one input terminal of trigger U 1 is connected between resistors R 1 and R 3 , and another input terminal of trigger U 1 is coupled between resistor R 4 and capacitor C 2 ; another terminal of resistor R 4 is coupled between diode D 5 and capacitor C 1 ; another terminal of capacitor C 2 is coupled with the negative output terminal of the full bridge rectification circuit; resistor C 3 is connected between the output terminal of trigger U 1 and one input terminal of trigger U 2 ; a resistor is connected in parallel between the output negative terminal of the full bridge rectification circuit and the input terminal of said trigger U 2 and a diode D 7 is coupled in reversal parallel between the output negative terminal of the full bridge rectification circuit and the input terminal of said trigger U 2 ; said resistor in parallel is composed of a varistor VR 1 and a resistor R 7 is connected in series; the positive terminal of said diode D 6 is coupled between resistor R 4 and capacitor C 2 , and the negative terminal of said
  • Said delay circuit is composed of trigger U 3 with its two input terminals connected between capacitor C 4 and resistor R 5 ; the other terminal of said capacitor C 4 is coupled between diode D 5 and capacitor C 1 ; the other terminal of said resistor R 5 is coupled with the negative output terminal of the full bridge rectification circuit; the output terminal of said trigger U 3 is coupled with the input terminal of trigger U 4 .
  • Said drive has another input terminal of the trigger U 4 coupled with the output terminal of the trigger U 2 , and the output terminal of said driving trigger U 4 coupled with a resistor R 6 , is connected to the collector of a triode Q 1 ; the emitter of said triode Q 1 coupled in serial with a resistor R 10 , is connected to the negative output terminal of the full bridge rectification circuit.
  • Said short-circuit protection circuit has one terminal of resistor R 8 coupled between diode D 5 and capacitor C 1 , and the other terminal is coupled in series with the positive terminal of a diode thyristor Q 2 ; the negative terminal of said diode thyristor Q 2 is coupled with the negative output terminal of the full bridge rectification circuit; the control electrode of said diode thyristor Q 2 is coupled between the emitter of triode Q 1 and resistor R 10 ; a resistor R 9 is connected in series between the control electrode of said diode thyristor Q 2 and the emitter of said triode Q 1 ; the input terminal of trigger U 2 is connected between resistor R 8 and the positive terminal of said diode thyristor Q 2 .
  • a voltmeter V 1 is coupled in parallel between the positive terminal and the negative termnial of said full bridge rectification circuit.
  • Capacitor C 1 is charged by the current passing the load via the full bridge rectification circuit constituted by diodes D 1 to D 4 ; resistor R 1 operates as charging current limiting resistor; diode D 5 prevents discharging of capacitor C 1 when triode Q 1 is conducted; ZD 1 limits the charging voltage for Capacitor C 1 , which guarantees the no-higher-than-12 V working voltage for triggers U 1 to U 4 .
  • Triggers U 1 and U 2 and their peripheral components constitute the triggering signal processing circuit; resistor R 3 is the sampling resistor for sensing zero-crossing of voltage.
  • resistor R 3 is the sampling resistor for sensing zero-crossing of voltage.
  • Capacitor C 3 is charged via varistor VR 1 and resistor R 7 ; when charging is completed, the high level of trigger U 2 's output terminal becomes low with its output terminal 4PIN of high level; at this moment, the voltage level of U 1 's two input terminals also becomes high, which enables the low level of trigger U 1 's output terminal 3PIN, and capacitor C 3 begins its charging. Diode D 7 is set for diminishing discharging duration.
  • Trigger U 3 operates as a time delay circuit, which enables full power level for the initiation of the fluorescent lamp or the energy-saving lamp, and the initiation lasts 2 to 5 seconds with the duration determined by the combination of capacitor C 4 and resistor R 5 .
  • Trigger U 4 works as the drive of triode Q 1 .
  • trigger U 4 produces high-level output, which enables the conduction of triode Q 1 , and then the load works. Since the time when trigger U 2 produces low-level output is determined by the values of capacitor C 3 , varistor VR 1 and resistor R 7 , changing the value of varistor VR 1 enables the change of triode Q 1 's conduction time, and therefore, the power control of load is ensured.
  • Resistor R 7 is particularly set for dimming of the fluorescent lamps or the energy-saving lamps. Since a certain minimum operation voltage is required for them, the charging duration of C 3 should not be too short. Thus in the invention it is ensured by resistor R 7 .
  • Resistors R 8 , R 9 , R 10 and diode thyristor Q 2 constitute a short-circuit protection circuit.
  • Resistor R 10 is a sampling resistor for load shorting or overloading of triode Q 1 . When load shorting or overloading appears, diode thyristor Q 2 is conducted, and this disables the conduction of triode Q 1 until diode thyristor Q 2 is reset after power is switched off.
  • Capacitor C 5 set for power factor enhancement, is used to improve switching waveform, and is also beneficial to diminishing interference of electromagnetic wave on electronic components.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Rectifiers (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
EP20070107040 2006-12-19 2007-04-26 Leistungsregler Withdrawn EP1937038A2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNB2006101676089A CN100499342C (zh) 2006-12-19 2006-12-19 功率调节器

Publications (1)

Publication Number Publication Date
EP1937038A2 true EP1937038A2 (de) 2008-06-25

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EP20070107040 Withdrawn EP1937038A2 (de) 2006-12-19 2007-04-26 Leistungsregler

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EP (1) EP1937038A2 (de)
CN (1) CN100499342C (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104768299A (zh) * 2015-04-04 2015-07-08 尉人杰 一种输出短路保护型恒流电源
CN104768298A (zh) * 2015-04-04 2015-07-08 尉人杰 一种输入欠压保护型恒流电源
CN104768300A (zh) * 2015-04-04 2015-07-08 郑继鑫 一种过热保护型恒流电源
CN104797054A (zh) * 2015-04-28 2015-07-22 卫斌鹏 Led分段调光阻容驱动电源

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104768299A (zh) * 2015-04-04 2015-07-08 尉人杰 一种输出短路保护型恒流电源
CN104768298A (zh) * 2015-04-04 2015-07-08 尉人杰 一种输入欠压保护型恒流电源
CN104768300A (zh) * 2015-04-04 2015-07-08 郑继鑫 一种过热保护型恒流电源
CN104768299B (zh) * 2015-04-04 2017-02-22 尉人杰 一种输出短路保护型恒流电源
CN104768300B (zh) * 2015-04-04 2017-02-22 郑继鑫 一种过热保护型恒流电源
CN104768298B (zh) * 2015-04-04 2017-05-03 深圳市聚多能科技股份有限公司 一种输入欠压保护型恒流电源
CN104797054A (zh) * 2015-04-28 2015-07-22 卫斌鹏 Led分段调光阻容驱动电源
CN104797054B (zh) * 2015-04-28 2018-02-06 中山市俊利来电子科技有限公司 Led分段调光阻容驱动电源

Also Published As

Publication number Publication date
CN1976194A (zh) 2007-06-06
CN100499342C (zh) 2009-06-10

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