CN109089366A - Electric ballast with surge protection circuit - Google Patents
Electric ballast with surge protection circuit Download PDFInfo
- Publication number
- CN109089366A CN109089366A CN201710444201.4A CN201710444201A CN109089366A CN 109089366 A CN109089366 A CN 109089366A CN 201710444201 A CN201710444201 A CN 201710444201A CN 109089366 A CN109089366 A CN 109089366A
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- resistance
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- discharge tube
- gas
- input terminal
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- 230000005611 electricity Effects 0.000 claims abstract description 12
- 239000003990 capacitor Substances 0.000 claims description 56
- 239000002184 metal Substances 0.000 claims 1
- 229910044991 metal oxide Inorganic materials 0.000 abstract description 4
- 150000004706 metal oxides Chemical class 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000001052 transient effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000001012 protector Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000003985 ceramic capacitor Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000007537 lampworking Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002633 protecting effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- 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
- H05B41/282—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
- H05B41/285—Arrangements for protecting lamps or circuits against abnormal operating conditions
- H05B41/2851—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions
- H05B41/2853—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions against abnormal power supply conditions
-
- 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
Landscapes
- Filters And Equalizers (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
Electric ballast with surge protection circuit; belong to field of electronic devices; to provide a kind of electric ballast for capableing of anti-surge voltage impact; it is connected respectively with mains electricity input end and micro control unit including filter unit, active power factor correction unit, two semi-bridge inversion output circuits, micro control unit, surge protection unit surge protection unit; micro control unit is connected with filter unit, two semi-bridge inversion output circuits and dimming unit respectively, and active power factor correction unit is connected with filter unit, two semi-bridge inversion output circuits respectively；Surge protection unit includes two firewire, three input terminals of zero curve and ground wire, firewire and zero curve output ends; it further include gas-discharge tube one, gas-discharge tube two, gas-discharge tube three, resistance one, resistance two, resistance three, resistance four, inductance one and inductance two, resistance one, resistance two, resistance three, resistance four are all the metal oxide varistor of Thermal protection type；Suitable for existing electric ballast.
Description
Technical field
The invention belongs to field of electronic devices, specifically a kind of electric ballast with surge protection circuit.
Background technique
Ballast is the equipment for playing metering function on electric light and generating instantaneous pressure, and existing ballast is broadly divided into electromagnetism
Formula and electronic type two major classes, existing is electric ballast mostly.In lamp working, electric current is had always and is led to from ballast
It crosses, ballast is easy to generate vibration, and can generate heat, therefore be mounted with the electric light of electric ballast, is especially mounted with matter
The electric light of poor electric ballast is measured, ballast can issue very big noise in use.
There is surge voltage often in existing city's power supply network, therefore more demanding to electric ballast but used at present
The poor reliability of electric ballast is embodied in electronic component and is easily burned out.Existing electric ballast is not generally in the market
Surge protection circuit is set, even if being provided with the protection circuit, but its protecting effect is not satisfactory.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of electric ballast with surge protection circuit, the ballasts
Device has the performance of anti-surge voltage impact, low residual voltage and zero afterflow.
The technical solution adopted by the present invention to solve the technical problems is: the electric ballast with surge protection circuit,
Including filter unit, active power factor correction unit, semi-bridge inversion output circuit one, semi-bridge inversion output circuit two, micro-control
Unit further includes mains electricity input end, and the mains electricity input end includes zero line, zero line side, ground terminal, which is characterized in that is also wrapped
Surge protection unit is included, the surge protection unit is connected with mains electricity input end and micro control unit respectively, and micro control unit is also distinguished
It is connected with filter unit, semi-bridge inversion output circuit one, semi-bridge inversion output circuit two, active power factor correction unit point
It is not connected with filter unit, semi-bridge inversion output circuit one, semi-bridge inversion output circuit two,
The surge protection unit includes firewire input terminal, zero curve input terminal, ground wire input terminal, fire wire output end and zero curve
Output end further includes gas-discharge tube one, gas-discharge tube two, gas-discharge tube three, resistance one, resistance two, resistance three, resistance
Four, Thermal Cutoffs one, inductance one and inductance two, the resistance one, resistance two, resistance three, resistance four are all Thermal protection type
Metal oxide varistor；Firewire input terminal, zero curve input terminal, the ground wire input terminal of surge protection unit are defeated with alternating current respectively
Enter the zero line at end, zero line side, ground terminal to connect one to one；One end of Thermal Cutoffs one is connected with firewire input terminal, electricity
The both ends of resistance one are connected with one end of the other end of Thermal Cutoffs one and gas-discharge tube one respectively, the both ends difference of resistance two
It is connected with the other end of gas-discharge tube one and zero curve input terminal, the another end of gas-discharge tube one is connected with ground wire input terminal；
The both ends of resistance three are connected with one end of the other end of Thermal Cutoffs one and gas-discharge tube two respectively, gas-discharge tube two
The other end connects with zero curve input terminal；The both ends of resistance four are connected with one end of fire wire output end and gas-discharge tube three respectively,
The other end of gas-discharge tube three is connected with zero line output end；The other end of Thermal Cutoffs one is exported by inductance one and firewire
End is connected, and zero curve input terminal is connected by inductance two with zero line output end.
It further, further include indicator light and divider resistance, a pin and the resistance two of the Thermal Cutoffs of resistance one
One pin of Thermal Cutoffs connects, another pin of the Thermal Cutoffs of resistance two again with the Thermal Cutoffs of resistance three one
Pin connects, and another pin of the Thermal Cutoffs of resistance three is connected by divider resistance with the anode of indicator light, indicator light
Cathode is connected with a pin of the Thermal Cutoffs of resistance four again.
Preferably, the filter unit is LC filter, including FireWire port port, zero curve port, first capacitor, the second electricity
The both ends of appearance, third capacitor, the 4th capacitor and common mode inductance, the both ends of first capacitor and common mode inductance respectively with FireWire port port and
Zero curve port is connected, and the other both ends of common mode inductance are connected with one end of one end of third capacitor and the 4th capacitor respectively, third
The other end of the other end of capacitor and the 4th capacitor connects with ground, and the second capacitor is parallel to the two of third capacitor and the 4th capacitor
End, the first capacitor, the second capacitor, third capacitor and the 4th capacitor capacitance range be 0.15~0.3 μ F, common mode inductance is
150~30mH.
Preferably, the filter unit is electromagnetic interface filter circuit.
The beneficial effects of the present invention are: structure is simple, easily fabricated, high safety, using frequency modulating technology elimination sound
Covibration can guarantee that the current operating frequency moment of fluorescent lamp changes around centre frequency, and be capable of providing overcurrent, over-voltage
And abnormal protection, it is highly reliable, and long service life, reduce cost.The present invention is suitable for existing electronic ballast for fluorescent lamp.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention；
Fig. 2 is the structural schematic diagram of surge protection unit of the invention；
Fig. 3 is the structural schematic diagram of filter unit of the invention；
Wherein, L10 is firewire input terminal, and N10 is zero curve input terminal, and L20 is fire wire output end, and N20 is zero line output end,
PE is ground wire input terminal, and L1 is inductance one, and L2 is inductance two, and G1 is gas-discharge tube one, and G2 is gas-discharge tube two, and G3 is gas
Body discharge tube three, TMOV1 are resistance one, and TMOV2 is resistance two, and TMOV3 is resistance three, and TMOV4 is resistance four, and LED is instruction
Lamp, R are divider resistance, and TCO1 is Thermal Cutoffs one, and A is FireWire port port, and B is zero curve port, and C1 is first capacitor, C2 the
Two capacitors, C3 are third capacitor, and C4 is the 4th capacitor, and L is common mode inductance.
Specific embodiment
With reference to the accompanying drawing, the technical schemes of the invention are described in detail.
As shown in Fig. 1 and 2, the electric ballast with surge protection circuit of the invention, including filter unit, active function
Rate factor correcting unit, semi-bridge inversion output circuit one, semi-bridge inversion output circuit two, micro control unit further include alternating current input
End, it further includes surge protection unit that the mains electricity input end, which includes zero line, zero line side, ground terminal, the surge protection unit
Be connected respectively with mains electricity input end and micro control unit, micro control unit also respectively with filter unit, semi-bridge inversion output circuit one and
Semi-bridge inversion output circuit two is connected, active power factor correction unit respectively with filter unit, semi-bridge inversion output circuit
One, semi-bridge inversion output circuit two be connected, the surge protection unit include firewire input terminal L10, zero curve input terminal N10,
Line input terminal PE, fire wire output end L20 and zero line output end N20, further include one G1 of gas-discharge tube, two G2 of gas-discharge tube,
Three G3 of gas-discharge tube, one TMOV1 of resistance, two TMOV2 of resistance, three TMOV3 of resistance, four TMOV4 of resistance, Thermal Cutoffs one
TCO1, one L1 of inductance and inductance two L2, one TMOV1 of resistance, two TMOV2 of resistance, three TMOV3 of resistance, four TMOV4 of resistance are
The metal oxide varistor (TMOV) of Thermal protection type；The firewire input terminal L10 of surge protection unit, zero curve input terminal N10,
Ground wire input terminal PE connects one to one with the zero line of mains electricity input end, zero line side, ground terminal respectively；Thermal Cutoffs one
One end of TCO1 is connected with firewire input terminal L10, the both ends of one TMOV1 of the resistance other end with one TCO1 of Thermal Cutoffs respectively
And one end of gas-discharge tube one is connected, the both ends of two TMOV2 of the resistance other end and zero curve with one G1 of gas-discharge tube respectively
Input terminal N10 is connected, and the another end of one G1 of gas-discharge tube is connected with ground wire input terminal PE；Distinguish at the both ends of three TMOV3 of resistance
It is connected with one end of two G2 of the other end L10 of one TCO1 of Thermal Cutoffs and gas-discharge tube, two G2's of gas-discharge tube is another
End connects with zero curve input terminal N10；The both ends of four TMOV4 of resistance are respectively with three G3's of fire wire output end L20 and gas-discharge tube
One end is connected, and the other end of three G3 of gas-discharge tube is connected with zero line output end N20；The other end of one TCO1 of Thermal Cutoffs is logical
It crosses one L1 of inductance to be connected with fire wire output end L20, zero curve input terminal is connected by two L2 of inductance with zero line output end N20, surge
The fire wire output end L20 and zero line output end N20 of protection location respectively with the fire wire output end of filter unit and zero line output end
It is connected.
Electric ballast is substantially exactly power-switching circuit, by the low-frequency ac power of input carry out frequency, waveform and
The change of amplitude.
Standard component of the TMOV as Surge Protector can not only be used for an independent surge suppressor and be mounted on equipment
In, and can be used as the component of Surge Protector (such as SPD, TVSS).The classical insulation of TMOV and common MOV parameter
It is completely the same.MOV (metal oxide varistor) is concatenated with TCO (Thermal Cutoffs), has no effect on the electric property of MOV.
Wherein, the first branch are as follows: one TMOV1 of resistance, the concatenated branch of gas-discharge tube one G1 and two TMOV2 of resistance, energy
It is enough realize respectively firewire input terminal L10 and ground wire input terminal PE be isolated and zero curve input terminal N10 and ground wire input terminal PE
Isolation, is this technology key lightning protection part.Subsequent each unit can be formed by using Thermal protection type varistor
Thermal protection.Second branch are as follows: three TMOV3 of resistance and the concatenated branch of two G2 of gas-discharge tube.Third branch are as follows: resistance four
TMOV4 and the concatenated branch of three G3 of gas-discharge tube.
It is more reliable than only with single TMOV using multiple TMOV parallel connections, because being protected using single TMOV, once
TMOV failure, then protected device will just lose protection, and after using several TMOV parallel connections protection, in TMOV doublet
In, if one is damaged, other intact persons can still undertake protective effect.And in the protection field for being applied to larger transient state overcurrent
When conjunction, multiple TMOV parallel connections can provide lower clamping voltag, improve the ability for transient state overcurrent of releasing.Similarly, is taken
The mode of one branch, second branch and third branch circuit parallel connection, it is more reliable than single branch.
In the circuit of TMOV and GDT tandem compound, GDT seems to play on-off action, when not having transient overvoltage effect
When, it can keep apart TMOV and supply voltage, not apply power-frequency voltage, can be with almost without leakage current in TMOV
Effectively solve the problems, such as that the leakage current in TMOV constantly increases.If GDT can be generated individually GDT using in a power
Afterflow, however, TMOV therebetween can cut off afterflow when TMOV is concatenated with GDT.
In order to observe the working condition of surge protection unit in time, it is provided with indicator light.The temperature of one TMOV1 of resistance
Another pin of degree fuse connects with another pin of the Thermal Cutoffs of two TMOV2 of resistance, and the temperature of two TMOV2 of resistance is protected
Another pin of dangerous silk connects with another pin of the Thermal Cutoffs of three TMOV3 of resistance again, the Temperature protection of three TMOV3 of resistance
Another pin of silk is connected by divider resistance R with the anode of indicator light LED, the cathode of indicator light LED and with four TMOV4 of resistance
Thermal Cutoffs another pin be connected.Indicator light LED with each Thermal Cutoffs be also it is concatenated, when MOV is worked normally
When, indicator light is bright, internal to be presented short-circuit condition when MOV excess temperature, and entire MOV becomes a good conductor, and excessive electric current
MOV and fuse are flowed through in a very short period of time, and so as to cause blown fuse, indicator light extinguishes.Furthermore it also can use sound
Sound alarm unit or sound and light warning unit carry out alert operation when Thermal Cutoffs fusing.
For this surge protection unit when breaking down, device had thermal tripping defencive function, can disconnect immediately and electric
The connection of net improves protective capability and reliability, protects subsequent cell.
Filter unit can resist radio frequency and electromagnetic interference, and power supply network and electric ballast are mutually isolated, and exclude mutually
Between interference.As shown in figure 3, filter unit is LC filter, including FireWire port port A, zero curve port B, first capacitor C1, the
Two capacitor C2, third capacitor C3, the 4th capacitor C4 and the both ends of common mode inductance L, first capacitor C1 and the both ends of common mode inductance L are divided
It is not connected with FireWire port port A and zero curve port B, the other both ends of common mode inductance are electric with one end of third capacitor C3 and the 4th respectively
One end of appearance is connected, and the other end of third capacitor C3 and the other end of the 4th capacitor C4 connect with ground, and the second capacitor C2 is parallel to
The both ends of third capacitor C3 and the 4th capacitor C4, the first capacitor C1, the second capacitor C2, third capacitor C3 and the 4th capacitor C4
Capacitance range be 0.15~0.3 μ F, common mode inductance be 150~30mH.In order to prevent when power supply line plug, due to first capacitor
C1, the second capacitor C2 charge and discharge process and cause plug long charged, can at the both ends of first capacitor C1, the second capacitor C2
A safe Resistance in parallel.Third capacitor C3, the 4th capacitor C4 generally use high-voltage ceramic capacitor, be used to inhibit common mode dry
Disturb signal.
In addition, the filter unit can be electromagnetic interface filter circuit, structure is simple, wide adaptability, and filtering performance is good.
Particular embodiments described above has carried out further in detail the purpose of the present invention, technical scheme and beneficial effects
It describes in detail bright, it should be understood that the above is only a specific embodiment of the present invention, is not intended to restrict the invention, it is all
Within the spirit and principles in the present invention, any modification, equivalent substitution, improvement and etc. done should be included in guarantor of the invention
Within the scope of shield.
Claims (4)
1. the electric ballast with surge protection circuit, including filter unit, active power factor correction unit, semi-bridge inversion
Output circuit one, semi-bridge inversion output circuit two, micro control unit, further include mains electricity input end, and the mains electricity input end includes fire
Line end, zero line side, ground terminal, which is characterized in that further include surge protection unit, the surge protection unit is defeated with alternating current respectively
Enter end and micro control unit is connected, micro control unit is also exported with filter unit, semi-bridge inversion output circuit one and semi-bridge inversion respectively
Circuit two is connected, and active power factor correction unit is defeated with filter unit, semi-bridge inversion output circuit one, semi-bridge inversion respectively
Circuit two is connected out,
The surge protection unit includes firewire input terminal, zero curve input terminal, ground wire input terminal, fire wire output end and zero line output
End, further include gas-discharge tube one, gas-discharge tube two, gas-discharge tube three, resistance one, resistance two, resistance three, resistance four,
Thermal Cutoffs one, inductance one and inductance two, the resistance one, resistance two, resistance three, resistance four are all the metal of Thermal protection type
Oxide voltage-sensitive resistance；The firewire input terminal of surge protection unit, zero curve input terminal, ground wire input terminal respectively with mains electricity input end
Zero line, zero line side, ground terminal connect one to one；One end of Thermal Cutoffs one is connected with firewire input terminal, resistance one
Both ends be connected respectively with one end of the other end of Thermal Cutoffs one and gas-discharge tube one, the both ends of resistance two respectively with gas
The other end and zero curve input terminal of body discharge tube one are connected, and the another end of gas-discharge tube one is connected with ground wire input terminal；Resistance
Three both ends are connected with one end of the other end of Thermal Cutoffs one and gas-discharge tube two respectively, gas-discharge tube two it is another
End connects with zero curve input terminal；The both ends of resistance four are connected with one end of fire wire output end and gas-discharge tube three respectively, gas
The other end of discharge tube three is connected with zero line output end；The other end of Thermal Cutoffs one passes through inductance one and fire wire output end phase
Even, zero curve input terminal is connected by inductance two with zero line output end.
2. as described in claim 1 with surge protection circuit electric ballast, which is characterized in that further include indicator light and
Divider resistance, a pin of the Thermal Cutoffs of resistance one connect with a pin of the Thermal Cutoffs of resistance two, resistance two
Another pin of Thermal Cutoffs connects with a pin of the Thermal Cutoffs of resistance three again, the Thermal Cutoffs of resistance three it is another
One pin is connected by divider resistance with the anode of indicator light, the cathode of indicator light and the pipe with the Thermal Cutoffs of resistance four
Foot is connected.
3. as described in claim 1 with the electric ballast of surge protection circuit, which is characterized in that the filter unit is
LC filter, including FireWire port port, zero curve port, first capacitor, the second capacitor, third capacitor, the 4th capacitor and common mode inductance,
The both ends of first capacitor and the both ends of common mode inductance are connected with FireWire port port and zero curve port respectively, the other both ends of common mode inductance
Be connected respectively with one end of one end of third capacitor and the 4th capacitor, the other end of the other end of third capacitor and the 4th capacitor with
Ground connects, and the second capacitor is parallel to the both ends of third capacitor and the 4th capacitor, the first capacitor, the second capacitor, third capacitor
And the 4th capacitor capacitance range be 0.15~0.3 μ F, common mode inductance be 150~30mH.
4. as described in claim 1 with the electric ballast of surge protection circuit, which is characterized in that the filter unit is
Electromagnetic interface filter circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710444201.4A CN109089366A (en) | 2017-06-13 | 2017-06-13 | Electric ballast with surge protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710444201.4A CN109089366A (en) | 2017-06-13 | 2017-06-13 | Electric ballast with surge protection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109089366A true CN109089366A (en) | 2018-12-25 |
Family
ID=64838775
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710444201.4A Pending CN109089366A (en) | 2017-06-13 | 2017-06-13 | Electric ballast with surge protection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109089366A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109089367A (en) * | 2017-06-13 | 2018-12-25 | 乐山加兴科技有限公司 | Intelligent electronic ballast for fluorescent lamp |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104902628A (en) * | 2015-05-20 | 2015-09-09 | 苏州雄达顺新节能科技有限公司 | LED energy-saving street lamp ballast |
| CN204741609U (en) * | 2015-05-20 | 2015-11-04 | 苏州雄达顺新节能科技有限公司 | Electronic ballast suitable for metal halogen lamp |
| CN204741608U (en) * | 2015-05-20 | 2015-11-04 | 苏州雄达顺新节能科技有限公司 | Intelligence high pressure sodium lamp electronic ballast |
-
2017
- 2017-06-13 CN CN201710444201.4A patent/CN109089366A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104902628A (en) * | 2015-05-20 | 2015-09-09 | 苏州雄达顺新节能科技有限公司 | LED energy-saving street lamp ballast |
| CN204741609U (en) * | 2015-05-20 | 2015-11-04 | 苏州雄达顺新节能科技有限公司 | Electronic ballast suitable for metal halogen lamp |
| CN204741608U (en) * | 2015-05-20 | 2015-11-04 | 苏州雄达顺新节能科技有限公司 | Intelligence high pressure sodium lamp electronic ballast |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109089367A (en) * | 2017-06-13 | 2018-12-25 | 乐山加兴科技有限公司 | Intelligent electronic ballast for fluorescent lamp |
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