CN102695351A - Forming circuit of three-section dimming control signals of fluorescent lamp ballast - Google Patents
Forming circuit of three-section dimming control signals of fluorescent lamp ballast Download PDFInfo
- Publication number
- CN102695351A CN102695351A CN2012101578607A CN201210157860A CN102695351A CN 102695351 A CN102695351 A CN 102695351A CN 2012101578607 A CN2012101578607 A CN 2012101578607A CN 201210157860 A CN201210157860 A CN 201210157860A CN 102695351 A CN102695351 A CN 102695351A
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- ballast
- line
- fluorescent lamp
- control
- effect transistor
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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
- H05B41/3925—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor with possibility of light intensity variations by frequency variation
-
- 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
- H05B41/26—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
- H05B41/28—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters
- H05B41/295—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices and specially adapted for lamps with preheating electrodes, e.g. for fluorescent lamps
Abstract
The invention discloses a forming circuit of three-section dimming control signals of a fluorescent lamp ballast; an electronic ballast which is supplies with power by a phase line and a middle line of an alternating current power supply is internally provided with an electromagnetic-interference-inhibition inductance coil on the middle line, and the electronic ballast is connected with the phase line of ballast input alternating current power supply through a control line C on a dimming control single-pole three-position band switch K2, or is connected with the middle line of the ballast input alternating current power supply through the control line C, or is not connected with the phase line and the middle line, thereby forming three dimming control signals with different level; and the forming circuit provided by the invention has the advantages of simple circuit, low manufacture cost, reliable and convenient operation and control.
Description
Technical field
The present invention relates to a kind of light adjusting controller of fluorescent lamp electric ballast, particularly a kind of control signal of sectional dimming forms circuit.
Background technology
In order to satisfy the different application demand of fluorescent lighting, except normally lighting the ballast of fluorescent lamp, the various dimming ballasts that can control the brightness of fluorescent lamp variation have appearred.
Thereby the brilliance control of fluorescent lamp is the operating frequency through the electric ballast that changes driving fluorescent lamp to be changed the electric current that flows through fluorescent lamp and realizes.The core of adjusting brightness of fluorescent lamp ballast can be summed up as and produces one the ballast inverter carried out the low level dc control signal of FREQUENCY CONTROL, through the frequency of oscillation of ballast inside inverter is controlled, just can realize the adjusting of brightness of fluorescent lamp.The form of control signal has just confirmed that also light modulation is the form that brightness of fluorescent lamp changes.Normally the frequency control circuit of electronic ballast inverter is applied a variable low-level DC voltage like 1V to 10V and realize adjusting brightness of fluorescent lamp.The high and low variation of dc controling level makes the operating frequency of ballast that corresponding the variation taken place, thereby corresponding electric current and the luminosity that flows through fluorescent lamp also just changes thereupon.
By control mode, the light modulation of electronic ballast for fluoresent lamp can divide serve as reasons dark to bright or by the bright sectional dimming control mode two that changes step by step to the continuous light tuning control mode and the brightness of dark brightness gradual change class greatly.
Modal sectional dimming is so-called " two sections " light modulation and " three sections " light modulation.Have only the two sections light modulations that are called of bright (100% intensity level) and dark (like 5% or 10% intensity level) two kinds of brightness variations; And the three-stage dimming that is called that bright (100% intensity level), intermediate light (like 50% intensity level) and dark (like 5% or 10% intensity level) three kinds of intensity levels change arranged.
Continually varying dimming control signal voltage obtains the effect of bright dark continuous light tuning; The dimming control signal voltage that produces hierarchical level just can be realized sectional dimming.Two sections dimming modes are realized through the control signal that forms high and low two level; The three-stage dimming mode then is to realize through the control signal that forms height, low three level of neutralization.
A kind of four kinds of on off operating modes combinations that are docked at two single knife switches on the ballast AC power incoming line are arranged,, export the three-stage dimming ballast of four kinds of control levels such as high, medium and low and zero through photoelectricity coupling and digital-to-analogue conversion.Also have and adopt application-specific integrated circuit (ASIC) to realize sectional dimming.
Summary of the invention
Technical problem to be solved by this invention is will provide a kind of will be connected with ballast with power supply phase line L, power supply center line N and three lines of control line C, forms fluorescent lamp ballast three-stage dimming control signals high, low three level controling signals of neutralization and forms circuit.
In order to solve above technical problem; The invention provides a kind of fluorescent lamp ballast three-stage dimming control signal and form circuit; With the AC power phase line; Center line power supply and on center line in the electric ballast of built-in inhibition electromagnetic interference inductance coil; Control line C through being connected on three band switch K2 of a brightness adjustment control hilted broadsword is connected with the phase line of ballast input ac power, or is connected with the center line of ballast input ac power, or the dimming control signal of three kinds of varying levels of all unconnected formation.
The control line C of three band switch K2 of said brightness adjustment control hilted broadsword connects input ac power phase line L in turn, or connects input ac power center line N; Perhaps do not connect and unsettled; Realize correspondingly that then fluorescent lamp is 100% brightness, or medium 50% brightness, or 5%～10% brightness.
The end of inhibition electromagnetic interference inductance coil L1 on the control line C of three band switch K2 of said brightness adjustment control hilted broadsword and the input ac power center line N is connected; The other end of inductance coil L1 and control signal form the datum mark of circuit, and promptly the source electrode of two field effect transistor switch pipe Q1, Q2 connects.
Said dimming control signal forms circuit; Be to be connected a rectifier diode D1 with the control line C of three band switch K2 of brightness adjustment control hilted broadsword; Be connected with the grid of field effect transistor switch pipe Q1 behind divider resistance R1, R2 through the filtered voltage of filter capacitor C1; Field effect transistor switch pipe Q1 drain electrode is connected with the grid of another field effect transistor switch pipe Q2; From the drain electrode load resistance R4 of field effect transistor switch pipe Q1 and drain electrode load resistance R6 and the divider resistance R3 of field effect transistor switch pipe Q2, the common point of R5 output light modulation direct-current control voltage.The drain electrode load output direct-current control voltage of FET Q2.
Directly be connected in the ballast during with operate as normal with the AC power cord voltage Vac of ready-made ballast input electromagnetic interference on the input ac power center line N suppress on the inductance pressure drop VL as form and brightness expose most corresponding high level and with the sampled signal of formation intermediate light level.It is simple to have circuit, cheap for manufacturing cost, controls advantages such as convenient and reliable.
With the control switch that three band switch K2 of brightness adjustment control hilted broadsword are high as forming, three level are hanged down in neutralization.
When 1 position, position of three band switch K2 of brightness adjustment control hilted broadsword; Supply voltage Vac through control line C through diode D1 and filter capacitor C1 rectification, filtered direct voltage; Be connected on divider resistance R1 and R2 on the field effect transistor switch pipe Q1 control gate pole divide voltage make switching tube Q1 conducting, and cause switching tube Q2 to end.Above-mentioned commutating voltage is through divider resistance R3 and R4 dividing potential drop, and the output voltage V o that obtains is a high level.
When 2 positions, three band switch K2 of brightness adjustment control hilted broadsword position; Be connected in the ballast during operate as normal electromagnetic interference on the input ac power center line N suppress pressure drop VL on the inductance L 1 through control line C through diode D1 and filter capacitor C1 rectification, filtered direct voltage, the branch pressure voltage of divider resistance R1 and R2 also makes Q1 conducting of field effect transistor switch pipe and switching tube Q2 end.The above-mentioned commutating voltage of this moment is through divider resistance R3 and switching tube Q1 load resistance R4 dividing potential drop, and the output voltage V o that obtains is middle level.
When 3 positions, three band switch K2 of brightness adjustment control hilted broadsword position; Control line C is unsettled; There is not voltage through diode D1 and filter capacitor C1 rectification, filtering; Field effect transistor switch pipe Q1 ends, the low-voltage dc power supply+Vdc conducting of the control utmost point of switching tube Q2 because of providing through resistance R 4 and R5 and ballast inside.The voltage Vo that form this moment be+Vdc is through resistance R 5 and switching tube Q2 load resistance R6 dividing potential drop, obtains a low level output voltage V o.
The height of formed output voltage V o, the low level value that neutralizes can be according to supply voltage Vac, and electromagnetic interference suppresses the pressure drop VL on the inductance L 1, voltage+Vdc that ballast inside provides, and through adjustment resistance R 3, R4, the resistance of R5 and R6 is confirmed.
Superior effect of the present invention is: be connected on pressure drop on the inhibition electromagnetic interference inductance coil on the power supply center line N as the sampled signal that forms the intermediate light level with the ballast input; When control line C is connected with power supply phase line L, form and the brightness corresponding high level that exposes most; And when control line C is unsettled, form and the darkest corresponding low level of brightness.It is simple to have circuit, cheap for manufacturing cost, controls advantages such as convenient and reliable.
Description of drawings
Fig. 1 is a basic circuit diagram of the present invention;
Label declaration among the figure
The 1-electric ballast; Electromagnetic interference suppresses the pressure drop on the inductance on the VL-center line;
The 2-fluorescent lamp; Vo-dimming control signal output voltage;
3-three-stage dimming control signal forms circuit; + Vdc-DC low-voltage;
The 10-electromagnetic interference suppresses inductance; Gnd-ground;
The 20-rectification circuit; K1-ballast on-off switch;
The 30-power factor correction; Three band switches of K2-brightness adjustment control hilted broadsword;
The 40-inverter; L1-suppresses the electromagnetic interference inductance coil;
50-potential isolation level shifts; The D1-rectifier diode;
The 60-brightness adjustment control; The C1-filter capacitor;
L-Alternating Current Power Supply phase line; R1, R2, R3, R5-divider resistance;
N-Alternating Current Power Supply center line; R4-switching tube Q1 load resistance;
C-brightness adjustment control line; R6-switching tube Q2 load resistance
The Vac-alternating supply voltage; Q1, Q2-fet switch pipe.
Embodiment
See also shown in the accompanying drawing, the present invention is done further description.
As shown in Figure 1; The invention provides a kind of fluorescent lamp ballast three-stage dimming control signal and form circuit; The power supply of ballast is the two-phase alternating current power supply, is provided with in the rectifier to suppress the electromagnetic interference inductance coil, with the AC power phase line; Center line power supply and on center line in the electric ballast of built-in inhibition electromagnetic interference inductance coil; Control line C through being connected on three band switch K2 of a brightness adjustment control hilted broadsword is connected with the phase line of ballast input ac power, or is connected with the center line of ballast input ac power, or the dimming control signal of three kinds of varying levels of all unconnected formation.
The control line C of three band switch K2 of said brightness adjustment control hilted broadsword; Connect in turn input ac power phase line L three band switch K2 of brightness adjustment control hilted broadsword the position 1; Or connect the position 2 of three band switch K2 of brightness adjustment control hilted broadsword of the center line N of input ac power, and perhaps be connected successively with the position 3 of unsettled three band switch K2 of brightness adjustment control hilted broadsword, realize correspondingly that then fluorescent lamp is 100% brightness; Or intermediate light, or 5%～10% brightness.
The end of inhibition electromagnetic interference inductance coil L1 on the control line C of three band switch K2 of said brightness adjustment control hilted broadsword and the input ac power center line N is connected; The other end of inductance coil L1 and control signal form the datum mark of circuit, and promptly the source electrode of two field effect transistor switch pipe Q1, Q2 connects.
Said dimming control signal forms circuit; Be to be connected a rectifier diode D1 with the control line C of three band switch K2 of brightness adjustment control hilted broadsword; Be connected with the grid of field effect transistor switch pipe Q1 behind divider resistance R1, R2 through the filtered voltage of filter capacitor C1; Field effect transistor switch pipe Q1 drain electrode is connected with the grid of another field effect transistor switch pipe Q2; From the drain electrode load resistance R4 of field effect transistor switch pipe Q1 and drain electrode load resistance R6 and the divider resistance R3 of field effect transistor switch pipe Q2, the common point of R5 output light modulation direct-current control voltage.
The AC supply voltage Vac of input ballast suppresses inductance 10 through electromagnetic interference earlier, suppresses the electromagnetic interference of ballast inside to electrical network.In rectification circuit 20, AC supply voltage is become direct voltage.Through the power factor of circuit of power factor correction 30 raising ballasts, improve the harmonic distortion of source current.Direct voltage after the lifting is transformed into high-frequency ac in inverter 40, from ballast 1 output, drive support flourescent lamp 2.The normal working frequency of inverter is by being defined as fixing 20kHz～33kHz or more than or equal to 40kHz in the electric ballast of non-light modulation; In dimming ballast, the variation of brightness realizes through changing inverter operating frequency.Through the operating frequency of adjusting control circuit 60 control inverters, the inverter operating frequency is higher, and the luminosity of fluorescent lamp is darker.Normally adjusting control circuit 60 is applied the direct-current control voltage of a 0～10V, just can change inverter operating frequency, make fluorescent lamp the darkest and the brightest between change.
The three-stage dimming that, intermediate light bright in order to realize and dark three kinds of brightness change, exactly for adjusting control circuit 60 provide one with three kinds of corresponding height of intensity level, the low three kinds of control signals of neutralization.
The position 1 corresponding output high level of three band switch K2 of said brightness adjustment control hilted broadsword is connected with the phase line L of ac power supply after mains switch K1.Level in the position 2 corresponding outputs of three band switch K2 of brightness adjustment control hilted broadsword is connected with the input 1 of inhibition electromagnetic interference inductance coil L1 on the center line N of ac power supply.The position 3 of three band switch K2 of brightness adjustment control hilted broadsword is unsettled, corresponding output low level.The datum mark of the height that forms, the low three kinds of control signals of neutralization is outputs 2 of the inhibition electromagnetic interference inductance coil L1 on the center line N of ac power supply.
Draw a control line C from the cutter of three band switch K2 of brightness adjustment control hilted broadsword, join with the positive pole of rectifier diode D1.The common point of the negative pole of rectifier diode D1 and filter capacitor C1 and divider resistance R1 and R3 is connected together.
The grid of field effect transistor switch pipe Q1 and the common point of divider resistance R1 and R2 are connected together.The drain electrode of field effect transistor switch pipe Q1 connects the grid of load resistance R4 and field effect transistor switch pipe Q2.The source electrode of field effect transistor switch pipe Q1 and Q2 is connected together with the other end of divider resistance R2 and afterwards is connected with the last output 2 that suppresses electromagnetic interference inductance coil L1 of center line N.
The drain electrode of field effect transistor switch pipe Q2 and the end of load resistance R6 join; DC low-voltage+Vdc that the termination ballast inside of divider resistance R5 provides; The common point of the other end and load resistance R6 and divider resistance R3 and load resistance R4 is connected together; The brightness adjustment control voltage Vo that output forms through potential isolation and level shifter 50, obtains the suitable brightness adjustment control voltage of control input with brightness adjustment control 60.
When three band switch K2 of brightness adjustment control hilted broadsword, 1 position on the throne; Supply voltage Vac is through diode D1 and filter capacitor C1 rectification, filtered direct voltage; Be connected on divider resistance R1 and R2 on the field effect transistor switch pipe Q1 grid divide voltage make switching tube Q1 conducting, and cause switching tube Q2 to end.Above-mentioned commutating voltage is through divider resistance R3 and load resistance R4 and low-voltage dc voltage+Vdc of being provided by ballast inside, divides through divider resistance R5 and load resistance R4 to be pressed into, and output voltage V o is a high level
When three band switch K2 of brightness adjustment control hilted broadsword, 2 positions on the throne; Be connected on pressure drop VL on the inhibition electromagnetic interference inductance coil L1 on the input ac power center line N during operate as normal in the ballast through diode D1 and filter capacitor C1 rectification, filtered direct voltage, Q1 conducting of field effect transistor switch pipe and switching tube Q2 ended through the branch pressure voltage of divider resistance R1 and R2.The above-mentioned commutating voltage of this moment is through divider resistance R3 and load resistance R4 dividing potential drop, and the output voltage V o that obtains is middle level.
When 3 positions, three band switch K2 of brightness adjustment control hilted broadsword position; Control line C is unsettled; There is not voltage through diode D1 and filter capacitor C1 rectification, filtering; Field effect transistor switch pipe Q1 ends, the low-voltage dc power supply+Vdc conducting of the grid of switching tube Q2 because of providing through load resistance R4 and divider resistance R5 and ballast inside.The output voltage V o that form this moment is+Vdc is through divider resistance R5 and load resistance R6 dividing potential drop, obtains a low level.
The height of formed output voltage V o, the low level value that neutralizes can be confirmed through the resistance of adjustment resistance R 3, R4, R5 and R6 according to the pressure drop VL on supply voltage Vac, the inhibition electromagnetic interference inductance coil L1, voltage+Vdc that ballast inside provides.
Claims (4)
1. a fluorescent lamp ballast three-stage dimming control signal forms circuit; It is characterized in that: with the AC power phase line; Center line power supply and on center line in the electric ballast of built-in inhibition electromagnetic interference inductance coil; Control line C through being connected on three band switch K2 of a brightness adjustment control hilted broadsword is connected with the phase line of ballast input ac power, or is connected with the center line of ballast input ac power, or the dimming control signal of three kinds of varying levels of all unconnected formation.
2. fluorescent lamp ballast three-stage dimming control signal according to claim 1 forms circuit; It is characterized in that: the control line C of three band switch K2 of said brightness adjustment control hilted broadsword connects input ac power phase line L in turn, or connects input ac power center line N; Perhaps do not connect and unsettled; Realize correspondingly that then fluorescent lamp is 100% brightness, or intermediate light, or 5%～10% brightness.
3. fluorescent lamp ballast three-stage dimming control signal according to claim 1 and 2 forms circuit; It is characterized in that: the end of the inhibition electromagnetic interference inductance coil L1 on the control line C of three band switch K2 of said brightness adjustment control hilted broadsword and the input ac power center line N is connected; The other end of inductance coil L1 and control signal form the datum mark of circuit, and promptly the source electrode of two field effect transistor switch pipe Q1, Q2 connects.
4. fluorescent lamp ballast three-stage dimming control signal according to claim 1 forms circuit; It is characterized in that: said dimming control signal forms circuit; Be to be connected a rectifier diode D1 with the control line C of three band switch K2 of brightness adjustment control hilted broadsword; Be connected with the grid of field effect transistor switch pipe Q1 behind divider resistance R1, R2 through the filtered voltage of filter capacitor C1; Field effect transistor switch pipe Q1 drain electrode is connected with the grid of another field effect transistor switch pipe Q2, from the drain electrode load resistance R4 of field effect transistor switch pipe Q1 and drain electrode load resistance R6 and the divider resistance R3 of field effect transistor switch pipe Q2, and the common point of R5 output light modulation direct-current control voltage.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101578607A CN102695351A (en) | 2012-05-21 | 2012-05-21 | Forming circuit of three-section dimming control signals of fluorescent lamp ballast |
| PCT/CN2013/075243 WO2013174209A1 (en) | 2012-05-21 | 2013-05-07 | Forming circuit of three-section dimming control signals of fluorescent lamp ballast |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101578607A CN102695351A (en) | 2012-05-21 | 2012-05-21 | Forming circuit of three-section dimming control signals of fluorescent lamp ballast |
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| Publication Number | Publication Date |
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| CN102695351A true CN102695351A (en) | 2012-09-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101578607A Pending CN102695351A (en) | 2012-05-21 | 2012-05-21 | Forming circuit of three-section dimming control signals of fluorescent lamp ballast |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102695351A (en) |
| WO (1) | WO2013174209A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103313490A (en) * | 2013-07-08 | 2013-09-18 | 上海顿格电子贸易有限公司 | Control circuit of three-way dimming LED (light-emitting diode) lights |
| WO2013174209A1 (en) * | 2012-05-21 | 2013-11-28 | 上海阿卡得电子有限公司 | Forming circuit of three-section dimming control signals of fluorescent lamp ballast |
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| CN1050120A (en) * | 1989-09-05 | 1991-03-20 | 菲利浦(北美)有限公司 | Dimmer control circuit |
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| CN202587567U (en) * | 2012-05-21 | 2012-12-05 | 上海阿卡得电子有限公司 | Three-section light adjustment control signal forming circuit of fluorescent lamp ballast |
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| CN102695351A (en) * | 2012-05-21 | 2012-09-26 | 上海阿卡得电子有限公司 | Forming circuit of three-section dimming control signals of fluorescent lamp ballast |
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- 2012-05-21 CN CN2012101578607A patent/CN102695351A/en active Pending
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2013
- 2013-05-07 WO PCT/CN2013/075243 patent/WO2013174209A1/en active Application Filing
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| CN2058048U (en) * | 1987-12-30 | 1990-06-06 | 蒙振雄 | Light-regulating and energy-saving switch of fluorescent lamp |
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| WO2013174209A1 (en) * | 2012-05-21 | 2013-11-28 | 上海阿卡得电子有限公司 | Forming circuit of three-section dimming control signals of fluorescent lamp ballast |
| CN103313490A (en) * | 2013-07-08 | 2013-09-18 | 上海顿格电子贸易有限公司 | Control circuit of three-way dimming LED (light-emitting diode) lights |
| CN103313490B (en) * | 2013-07-08 | 2015-05-06 | 上海顿格电子贸易有限公司 | Control circuit of three-way dimming LED (light-emitting diode) lights |
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| Publication number | Publication date |
|---|---|
| WO2013174209A1 (en) | 2013-11-28 |
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Application publication date: 20120926 |