CN109068465A - A kind of HID lamp input circuit - Google Patents
A kind of HID lamp input circuit Download PDFInfo
- Publication number
- CN109068465A CN109068465A CN201810635422.4A CN201810635422A CN109068465A CN 109068465 A CN109068465 A CN 109068465A CN 201810635422 A CN201810635422 A CN 201810635422A CN 109068465 A CN109068465 A CN 109068465A
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- Prior art keywords
- circuit
- hid lamp
- hid
- input
- electric
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Classifications
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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
- H05B41/26—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
- H05B41/288—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 without preheating electrodes, e.g. for high-intensity discharge lamps, high-pressure mercury or sodium lamps or low-pressure sodium lamps
- H05B41/292—Arrangements for protecting lamps or circuits against abnormal operating conditions
-
- 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
Landscapes
- Circuit Arrangements For Discharge Lamps (AREA)
Abstract
The invention belongs to equipment power distribution circuit field more particularly to a kind of HID lamp input circuits.The present invention is by improving available circuit structure, increase new control mode, input circuit is provided between HID lamp and electric network source, and then signal is polluted in two-way isolation, prevent HID lamp by the influence of power grid noise signal, improve its stability, guarantee HID service performance, the noise signal for inhibiting the end HID to generate simultaneously, it prevents it from entering power grid and generates pollution, improve power grid electric energy environment, it is protected simultaneously by components of the circuit to HID etc. and its inside, the card for improving HID etc. examines capable and safety, can act in time when network voltage or electric current mutate prevents HID lamp from receiving influence.By Active control mode, the power coefficient of electric network source side is improved, guarantees the efficiency of power supply, power quality has been effectively ensured while excluding noise, avoiding power supply from changing influences the work of HID lamp.
Description
Technical field
The invention belongs to equipment power distribution circuit field more particularly to a kind of HID lamp input circuits.
Background technique
HID lamp is the lighting apparatus of efficient high life a kind of, and primary structure includes fluorescent tube and for guaranteeing fluorescent tube just
The ballast often operated, ballast life is long, can be improved the reliability of HID lamp, but that there is also power factor (PF)s is low, energy consumption is high,
The problems such as electric network pollution can be generated, with the development of HID lamp technology, power, service life and illumination intensity are continuously improved, and
The electromagnetic interference signal that HID etc. and its internal electronic component generate is also more and more；Since the elecrtonegativity of HID lamp is special
Point, integrally-built C-V characteristic also become increasingly complex, and the demand to inside and outside power utilization environment is also higher and higher.
Summary of the invention
The purpose of the invention is, provides a kind of input circuit suitable for HID lamp, it is defeated can to improve HID etc.
The quality for entering signal inhibits two-way harmonic pollution, improves the stability of HID lamp work, improves equipment life and performance.
To achieve the above object, the invention adopts the following technical scheme that；
A kind of HID lamp input circuit is set between HID lamp and electric network source, and two companies are included at least in electric network source
It is connected to the input line of HID lamp, going here and there respectively in described two input lines has fuse F10 and thermistor RT10；Fuse F10
With the rear end thermistor RT10, it is overlapped with filter capacitor C10 between two input lines where the two, the input line connects respectively
Enter the front stage of common mode inductance L10；
The input line is from access after the stretching of common mode inductance L10 front stage by Transient Voltage Suppressor RV10, filter capacitor
The secondary filter structure of C11, C12 and differential mode inductance L11 composition；The Transient Voltage Suppressor RV10 is connected across input electric wire
Between, filter capacitor C11 and C12 is in parallel with RV10, and differential mode inductance L11 is sealed in one of input line, and is set to two filters
Wave capacitor is between two tie points in the input line；
It further include the bridge rectifier in parallel with front end circuit, the rear end of bridge rectifier is parallel with capacitor C15；
It further include power supply correcting circuit, the power supply correcting circuit includes active power factor controlling chip U20, the electricity
Source correcting circuit includes divider resistance R21, R22 that the two sides capacitor C15 are connected across after being serially connected, divider resistance R21, R22's
Ground capacity C22 is equipped between intermediate point and the MULT pin of U20；The prime Np of boost inductance T20 is sealed in input line, is boosted
The Vcc energization pins of the rear class Ns and U20 of inductance T20 connect, and when voltage is more than 11V, U20 starts to work, and defeated from GD pin
Driving signal out, driving signal control is by the fast cut-off knot of slow conducting that resistance R25, diode D21 and switching tube Q20 are formed
Structure；Boost inductance T20 prime Np is used as boost inductance, and T20 rear class Ns is equipped with the detection for detecting inductive current zero cross signal
Circuit；Resistance R28 series connection R29 constitutes negative voltage feedback network, and D/C voltage inputs INV pin after R28, R29 partial pressure after boosting,
MULT multiplier port is also inputted simultaneously, after processing as the reference of current sense comparator；When signal driving Q20 conducting
When, booster diode D20 cut-off, the electric current for flowing through T20 is linearly increasing since 0, and by Q20 to ground, once T20 electric current reaches
To peak value, the pulse of Q20 is driven to become low level, Q20 cut-off, inductance T20 is discharged by diode D20 to circuit, T20 electric current
Linear decline is received by U20 zero current detector, is generated new defeated when electric current is reduced to the electric current that 0, T20 mutation electromotive force generates
Q20 is connected in pulsed drive out, until ending again, until ending again；When output overvoltage, overshoot current by R28 and
Compensation circuit flows into error amplifier, if this electric current is greater than preset value, chip will close driving output to protect circuit.
Refinement to above scheme includes that the U20 refers to that AP1661 controls chip, and the DIV of the AP1661 chip draws
Foot and ONMP pin are connect with feedback network, and tie point is between R28 and R29.
Refinement to above scheme includes the Vcc pin and GND pin and T20 rear class Ns of the AP1661 control chip
Connection.
The beneficial effect is that: the present invention by improve available circuit structure, increase new control mode, HID lamp with
And input circuit is provided between electric network source, and then signal is polluted in two-way isolation, prevents HID lamp by power grid noise signal
It influences, improves its stability, the noise signal for guaranteeing HID service performance, while the end HID being inhibited to generate prevents it from entering electricity
Net generates pollution, improves power grid electric energy environment, while protecting by components of the circuit to HID etc. and its inside, mentions
The card of high HID etc. examines capable and safety, and can act in time when network voltage or electric current mutate prevents HID lamp from receiving
To influence.By Active control mode, the power coefficient of electric network source side is improved, guarantees the efficiency of power supply, makes an uproar excluding
Power quality is effectively ensured while sound, avoiding power supply from changing influences the work of HID lamp.
Detailed description of the invention
Fig. 1 is the front end circuit of the embodiment of the present invention and the schematic diagram of rectification circuit；
Fig. 2 is the schematic diagram of the power supply correcting circuit of the embodiment of the present invention.
Specific embodiment
It elaborates below in conjunction with specific embodiment to the invention.
One of necessary accessory when being worked normally as HID lamp, ballast crowd fighting itself and power grid during the work time
In other electronic equipments can generate a large amount of electromagnetic interferences and enter power grid, and as power grid is in HID lamp ballast and various electronics
Transmitted repeatedly between equipment, thus the present invention be provided with circuit as shown in Figure 1 be used to improve ballast reliability and every
From the electromagnetic interference in filtering power grid, in actual use, due to the interference most serious between various electronic equipments and power grid
Region be generally concentrated at input/output terminal, therefore this circuit is arranged in front of the input terminal of electric ballast preferably.
Circuit includes front end circuit, and front end circuit mainly includes the fuse F10 and heat for sealing in two input electric wires respectively
For realizing overcurrent protection, thermistor RT10 is used to inhibit electric network source moment surge by quick resistance RT10, fuse F10,
It is influenced with guaranteeing HID lamp and ballast not by power grid unusual fluctuations；Fuse F10 and the rear end thermistor RT10, the two
It is overlapped with filter capacitor C10 between two input lines at place, the input line is respectively connected to the front stage of common mode inductance L10,
Filter capacitor C10 and common mode inductance L10 forms common mode filtering structure, and common mode filtering structure is (non-for stopping common mode interference signal
Symmetric disturbance electric current), difference mode signal (symmetric disturbance electric current) and source current is connected, and then reduce the decaying of source current,
Inhibit current noise.
Specifically, RT10 is negative temperature coefficient (NTC) thermistor in the present embodiment, for inhibiting power supply to connect moment
The inrush current shock of generation, model NTC10D-11, room temperature resistance value 10 Ω, diameter 11mm, power bracket 40-80W, most
High current 3A；RV10 is Zinc-oxide piezoresistor, is used as Transient Voltage Suppressor, pressure sensitive voltage 560V, model 07K561.
Enter secondary filter structure by the current signal that common mode filtering structure eliminates symmetrical interference signal, the second level
Filter structure is made of Transient Voltage Suppressor RV10, filter capacitor C11, C12 and common mode inductance L11；Transient voltage inhibits
Device RV10 is connected across between input electric wire, and filter capacitor C11 and C12 is in parallel with RV10, and it is defeated that differential mode inductance L11 seals in one of them
Enter in line, and is set to two filter capacitors between two tie points in the input line.The secondary filter structure effectively stops
High-frequency interferencing signal, improves the stability of the normal works such as HID, has excluded High-frequency Interference, while it can make interference source
The interference signal back reflection of generation, is not influenced by filtering impedance and interference source impedance factors, improves the structure to interference
The validity of signal；
Signal utilizes common mode filtering structure and secondary filter by obtaining circuit abnormality defencive function after aforementioned structure
Structure inhibits the electromagnetic interference from power grid, while the electromagnetic interference signal for generating ballast itself is inhibited, and reduces
To the adverse effect of power grid when ballast work, effectively inhibits two-way harmonic pollution, improve signal quality, inhibit whole
Electromagnetic pollution.
Further include the bridge rectifier being connected with ballast input in front end circuit, mains supply is converted to flat
Sliding DC power supply, the frequency of the pulsating dc voltage of bridge rectifier output is twice of supply voltage, while being kept just
String half-wave waveform, therefore in rear end shunt capacitance C15, ripple is obtained than smaller by the periodical charge and discharge of capacitor C15
DC voltage guarantees that the ballast of its rear end and HID lamp pipe work normally, improves power-efficient to improve power supply power quality.
DC power supply by obtaining after aforementioned protective separation circuit can reduce electricity due to containing a large amount of harmonic signal
Generation, transmission and the efficiency utilized of energy reduce the insulation ag(e)ing characteristic of equipment, generate overheating effect, shorten equipment life
Even result in equipment damage；Bridge rectifier structure above-mentioned can make subsequent conditioning circuit due to that can generate zigzag ripple also simultaneously
At influence.It therefore further include improving the power supply school of power quality for improving power factor (PF), limitation wave distortion in the present embodiment
Positive circuit.
In Fig. 2, power supply correcting circuit includes passive power factor corrective control chip AP1661, boost inductance T20, function
Rate switching tube Q20, booster diode D20, output capacitance C20 and feedback arrangement.Ac supply signal is by protective separation electricity
DC voltage is obtained after road is added in the both ends capacitor C15, composition partial pressure knot in parallel with C15 after divider resistance R21 and R2 series connection
Structure, while using the waveform and phase of partial-pressure structure detection input voltage, the intermediate point of two divider resistances and the MULT of U20
Ground capacity C22 is equipped between pin to eliminate the high-frequency interferencing signal of the pin, the secondary and the Vcc of U20 of boost inductance T20
Energization pins connection, starts to work when voltage is more than 11V, and from GD pin output drive signal, driving signal is controlled by electricity
Hinder the fast cut-off control structure of slow conducting of R25, diode D21 and switching tube Q20 composition.Transformer T20 primary Np, which is used as, to be risen
Voltage inductance, secondary Ns are equipped with the detection circuit for detecting inductive current zero cross signal.Resistance R28, R29 constitute negative voltage feedback
Network, D/C voltage divides input INV pin through R28, R29 after boosting, while also inputting MULT multiplier port, makees after processing
For the reference of current sense comparator.R27 is inductive current detection resistance, for sampling inductive current rising edge (metal-oxide-semiconductor electricity
Stream).When signal driving Q20 conducting, booster diode D20 cut-off, the electric current for flowing through T20 is linearly increasing since 0, and passes through
Q20 is to ground, once T20 electric current reaches peak value, the pulse of Q20 is driven to become low level, Q20 cut-off, inductance T20 by D20 to
Circuit electric discharge, T20 electric current linear decline, when electric current is reduced to the electric current that 0, T20 mutation electromotive force generates, by U20 zero current detection
Device receives, and generates a new output pulsed drive, Q20 is connected, until ending again.U20 has output over-voltage protection function,
When output overvoltage, overshoot current flows into error amplifier by R28 and compensation circuit, if this electric current is greater than 40 μ A, chip
Driving output will be closed to protect circuit.
Using the power supply correcting circuit, source side power factor (PF) can be improved, improve power quality, reduce current distortion,
Realize the power coefficient close to 1.
Finally it should be noted that above embodiments are only to illustrate the technical solution of the invention, rather than to this hair
It is bright create protection scope limitation, although being explained in detail referring to preferred embodiment to the invention, this field it is general
Lead to it will be appreciated by the skilled person that can be modified or replaced equivalently to the technical solution of the invention, without departing from this
The spirit and scope of innovation and creation technical solution.
Claims (3)
1. a kind of HID lamp input circuit, which is characterized in that the HID lamp input circuit is set between HID lamp and electric network source,
Include at least two input lines for being connected to HID lamp in electric network source, in described two input lines respectively string have fuse F10 with
And thermistor RT10；Fuse F10 and the rear end thermistor RT10 are overlapped with filtering between two input lines where the two
Capacitor C10, the input line are respectively connected to the front stage of common mode inductance L10；
The input line from common mode inductance L10 front stage stretching after access by Transient Voltage Suppressor RV10, filter capacitor C11,
The secondary filter structure of C12 and differential mode inductance L11 composition；The Transient Voltage Suppressor RV10 be connected across input electric wire it
Between, filter capacitor C11 and C12 and Transient Voltage Suppressor RV10 are in parallel, and differential mode inductance L11 seals in one of input line
In, and two filter capacitors are set between two tie points in the input line；
It further include the bridge rectifier in parallel with front end circuit, the rear end of bridge rectifier is parallel with capacitor C15；
It further include power supply correcting circuit, the power supply correcting circuit includes active power factor controlling chip U20, the power supply school
Positive circuit includes divider resistance R21, R22 that the two sides capacitor C15 are connected across after being serially connected, the centre of divider resistance R21, R22
Ground capacity C22 is equipped between point and the MULT pin of U20；The prime Np of boost inductance T20, boost inductance are sealed in input line
The Vcc energization pins of the rear class Ns and U20 of T20 connect；
When voltage is more than 11V, U20 starts to work, and from GD pin output drive signal, driving signal control by resistance R25,
The fast cut-off structure of slow conducting of diode D21 and switching tube Q20 composition；Boost inductance T20 prime Np is used as boost inductance,
T20 rear class Ns is equipped with the detection circuit for detecting inductive current zero cross signal；Resistance R28 series connection R29 constitutes negative voltage feedback
Network, supply voltage inputs INV pin after R28, R29 partial pressure after boosting, while also inputting MULT multiplier port, through handling
Afterwards as the reference of current sense comparator；When signal driving Q20 conducting, the electricity of T20 is flowed through in booster diode D20 cut-off
Stream is linearly increasing since 0, and, once T20 electric current reaches peak value, the pulse of Q20 is driven to become low level to ground by Q20,
Q20 cut-off, inductance T20 are discharged by diode D20 to circuit, T20 electric current linear decline, when electric current is reduced to 0, T20 mutation electricity
The electric current that kinetic potential generates, is received, generating new output pulsed drive is connected Q20, until cutting again by U20 zero current detector
Only, until ending again；When output overvoltage, overshoot current flows into error amplifier by R28 and compensation circuit, if this is electric
Stream is greater than preset value, and chip will close driving output to protect circuit.
2. a kind of HID lamp input circuit according to claim 1, which is characterized in that the U20 refers to that AP1661 controls core
Piece, the DIV pin and ONMP pin of the AP1661 chip are connect with feedback network, and tie point is between R28 and R29.
3. a kind of HID lamp input circuit according to claim 2, which is characterized in that the Vcc of the AP1661 control chip draws
Foot and GND pin are connect with T20 rear class Ns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810635422.4A CN109068465A (en) | 2018-06-20 | 2018-06-20 | A kind of HID lamp input circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810635422.4A CN109068465A (en) | 2018-06-20 | 2018-06-20 | A kind of HID lamp input circuit |
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| Publication Number | Publication Date |
|---|---|
| CN109068465A true CN109068465A (en) | 2018-12-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810635422.4A Pending CN109068465A (en) | 2018-06-20 | 2018-06-20 | A kind of HID lamp input circuit |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7067987B2 (en) * | 2004-03-26 | 2006-06-27 | Argent Electric, Inc. | Electronic ballast with closed loop control using composite current and voltage feedback and method thereof |
| CN201523229U (en) * | 2009-11-02 | 2010-07-07 | 杭州华三通信技术有限公司 | Surge protective circuit and device containing common mode choke |
| CN104822216A (en) * | 2015-05-15 | 2015-08-05 | 泉州师范学院 | Miniwatt HID lamp drive circuit |
| CN107072020A (en) * | 2017-02-06 | 2017-08-18 | 珠海美光原科技股份有限公司 | A kind of single-stage HID digital ballast circuits based on piezoelectric transformer |
-
2018
- 2018-06-20 CN CN201810635422.4A patent/CN109068465A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7067987B2 (en) * | 2004-03-26 | 2006-06-27 | Argent Electric, Inc. | Electronic ballast with closed loop control using composite current and voltage feedback and method thereof |
| CN201523229U (en) * | 2009-11-02 | 2010-07-07 | 杭州华三通信技术有限公司 | Surge protective circuit and device containing common mode choke |
| CN104822216A (en) * | 2015-05-15 | 2015-08-05 | 泉州师范学院 | Miniwatt HID lamp drive circuit |
| CN107072020A (en) * | 2017-02-06 | 2017-08-18 | 珠海美光原科技股份有限公司 | A kind of single-stage HID digital ballast circuits based on piezoelectric transformer |
Non-Patent Citations (1)
| Title |
|---|
| 孙爱如: "基于单片机控制的三级式恒功率金卤灯电子镇流器", 《专业学位硕士学位论文》 * |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181221 |
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| RJ01 | Rejection of invention patent application after publication |