CN202799342U - Pulse starting circuit for electronic ballast of high-pressure gas discharge lamp - Google Patents
Pulse starting circuit for electronic ballast of high-pressure gas discharge lamp Download PDFInfo
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- CN202799342U CN202799342U CN2012204712887U CN201220471288U CN202799342U CN 202799342 U CN202799342 U CN 202799342U CN 2012204712887 U CN2012204712887 U CN 2012204712887U CN 201220471288 U CN201220471288 U CN 201220471288U CN 202799342 U CN202799342 U CN 202799342U
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- 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
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Abstract
A pulse starting circuit for an electronic ballast of a high-pressure gas discharge lamp comprises a first MOS (metal oxide semiconductor) transistor, a second capacitor, a second MOS (metal oxide semiconductor) transistor, a first capacitor, a first boosting transformer, a boosting rectifier circuit, a fourth capacitor and a switching element. A source electrode of the first MOS transistor and a drain electrode of the second MOS transistor are connected to one end of a series circuit comprising a secondary coil of the first boosting transformer and a bulb, the other end of the series circuit comprising the secondary coil of the first boosting transformer and the bulb is connected with one end of the first capacitor and one end of the second capacitor, the other end of the first capacitor and a drain electrode of the first MOS transistor are connected to one end of a power supply, a source electrode of the second MOS transistor and the other end of the second capacitor are connected to the other end of the power supply, a high-frequency alternating current power supply is connected with the boosting rectifier circuit and then connected with the fourth capacitor, and the fourth capacitor is connected with the switching element and then connected with a primary coil of the first boosting transformer. Only one high voltage and low current are generated on the secondary coil of the first boosting transformer, and the first MOS transistor and the second MOS transistor are safe.
Description
Technical field
The utility model relates to a kind of electronic ballast starting circuit, especially a kind of electronic ballast for high-pressure discharge lamp pulse starting circuit.
Background technology
Generally, all need the high pressure of a 4-5kV to puncture the gas of wick inside when high-voltage gas discharging light is lit a lamp, thereby lamp is started working.Thereby all electronic ballast for high-voltage gas discharge lamps all need to have a cover to produce the circuit of this high pressure.The high-voltage starting circuit of electronic ballast for high-pressure discharge lamp generally adopts the resonance Starting mode at present, as shown in Figure 1, comprise the first metal-oxide-semiconductor Q1, the first capacitor C 1, the second capacitor C 2, the second metal-oxide-semiconductor Q2, and the resonant circuit that is formed by current-limiting inductance L, the series connection of the 3rd capacitor C 3; The source electrode of described the first metal-oxide-semiconductor Q1 be connected the drain electrode of metal-oxide-semiconductor Q2 and connect, its tie point connects an end of described resonant circuit, the other end of described resonant circuit connects an end of described the first capacitor C 1 and an end of the second capacitor C 2, the drain electrode of the other end of described the first capacitor C 1 and the first metal-oxide-semiconductor Q1 links to each other and is connected in an end of power supply, the other end of the source electrode of described the second metal-oxide-semiconductor Q2 and the second capacitor C 2 links to each other and is connected in the other end of described power supply, and this circuit is the resonance start-up circuit.Electric light Lamp is in parallel with described the 3rd capacitor C 3, and the grid of described the first metal-oxide-semiconductor Q1 connects the first drive circuit, and the grid of described the second metal-oxide-semiconductor Q2 connects the second drive circuit, described the first drive circuit be connected drive circuit and connect a power supply.Described the first drive circuit and the second drive circuit have high-frequency driving signal to be input to the grid of the first metal-oxide-semiconductor Q1 and the second metal-oxide-semiconductor Q2 when needs are lit a lamp, this moment, described resonant circuit can produce resonance, produce the high pressure of 4-5KV at the two ends of described the 3rd capacitor C 3, thereby light bulb Lamp.This circuit is when described the 3rd capacitor C 3 two ends produce high pressure, can be at the two ends of described the first metal-oxide-semiconductor Q1, produce very large electric current between the two ends of the second metal-oxide-semiconductor Q2, this electric current has exceeded the maximum current that metal-oxide-semiconductor can bear, very easily damage metal-oxide-semiconductor, cause the damage of whole electric ballast.
In view of this, special the utility model that proposes.
The utility model content
The technical problems to be solved in the utility model is to overcome the deficiencies in the prior art, can not produce large electric current when a kind of the igniting is provided and flow through the electronic ballast for high-pressure discharge lamp pulse starting circuit that metal-oxide-semiconductor makes its damage.
For solving the problems of the technologies described above, the utility model adopts the basic conception of technical scheme to be:
A kind of electronic ballast for high-pressure discharge lamp pulse starting circuit comprises the first metal-oxide-semiconductor, the second electric capacity, the second metal-oxide-semiconductor and the first electric capacity;
The switch element that also comprises conducting when the first step-up transformer, boost rectifying circuit, the 4th electric capacity and the discharge voltage at described the 4th electric capacity reach predetermined value;
The secondary coil of described the first step-up transformer and bulb series connection, the source electrode of described the first metal-oxide-semiconductor be connected the drain electrode of metal-oxide-semiconductor and connect, its tie point connects an end of the series circuit that secondary coil and bulb by described the first step-up transformer form, the other end of the series circuit that is comprised of with bulb the secondary coil of described the first step-up transformer connects an end of described the first electric capacity and an end of the second electric capacity, the drain electrode of the other end of described the first electric capacity and the first metal-oxide-semiconductor links to each other and is connected in an end of power supply, the other end of the source electrode of described the second metal-oxide-semiconductor and the second electric capacity links to each other and is connected in the other end of described power supply, the grid of described the first metal-oxide-semiconductor connects the first drive circuit, and the grid of described the second metal-oxide-semiconductor connects the second drive circuit; One high-frequency ac power connects the input of described boost rectifying circuit, the output of described boost rectifying circuit connects respectively the two ends of described the 4th electric capacity, the two ends of described the 4th electric capacity connect the two ends of the primary coil of described the first step-up transformer, described the 4th electric capacity be connected the connecting circuit of primary coil of the first step-up transformer and connect described switch element.
Further, described switch element is ceramic gas discharge tube.
Further, described the 4th electric capacity be connected the connecting circuit of primary coil of the first step-up transformer and connect a current-limiting circuit.
Further, described current-limiting circuit is a resistance or is composed in series by at least two resistance.
Further, described boost rectifying circuit is a voltage-multiplying circuit.
Further, described boost rectifying circuit comprises the second step-up transformer and a rectification circuit, the primary coil of described the second step-up transformer connects described high-frequency ac power, secondary coil connects the input of described rectification circuit, and the output of described rectification circuit connects respectively the two ends of described the 4th electric capacity.
After adopting technique scheme, the utility model compared with prior art has following beneficial effect: boost rectifying circuit is given first the 4th capacitor charging, when the voltage of described the 4th electric capacity can make described switch element conducting, will produce voltage at described the first step-up transformer primary coil, produce a high pressure on described the first step-up transformer secondary coil, bulb is lit.This structure produces large electric current at the primary coil of described the 4th electric capacity, switch element and the first step-up transformer, but the secondary coil at described the first step-up transformer produces a high pressure and a little electric current, therefore can guarantee the safety of described the first metal-oxide-semiconductor and the second metal-oxide-semiconductor.
Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail.
Description of drawings
Fig. 1 is the reduced graph of electric ballast resonance start-up circuit in the prior art;
Fig. 2 is the circuit diagram of the utility model electronic ballast for high-pressure discharge lamp pulse starting circuit main circuit;
Fig. 3 is a kind of circuit diagram that is connected to the circuit of the first step-up transformer primary coil in the electronic ballast for high-pressure discharge lamp pulse starting circuit main circuit.
Embodiment
As shown in Figures 2 and 3, the utility model is a kind of electronic ballast for high-pressure discharge lamp pulse starting circuit, comprises the first metal-oxide-semiconductor Q1, the second capacitor C 2, the second metal-oxide-semiconductor Q2 and the first capacitor C 1; The switch element 2 that also comprises conducting when the first step-up transformer T1, boost rectifying circuit 1, the 4th capacitor C 4 and the discharge voltage in described the 4th capacitor C 4 reach predetermined value;
The secondary coil of described the first step-up transformer T1 and bulb Lamp series connection, the source electrode of described the first metal-oxide-semiconductor Q1 be connected the drain electrode of metal-oxide-semiconductor Q2 and connect, its tie point connects an end of the series circuit that secondary coil and bulb Lamp by described the first step-up transformer T1 form, the other end of the series circuit that is comprised of with bulb Lamp the secondary coil of described the first step-up transformer T1 connects an end of described the first capacitor C 1 and an end of the second capacitor C 2, the drain electrode of the other end of described the first capacitor C 1 and the first metal-oxide-semiconductor Q1 links to each other and is connected in an end of power supply, the other end of the source electrode of described the second metal-oxide-semiconductor Q2 and the second capacitor C 2 links to each other and is connected in the other end of described power supply, the grid of described the first metal-oxide-semiconductor Q1 connects the first drive circuit, and the grid of described the second metal-oxide-semiconductor Q2 connects the second drive circuit; One high-frequency ac power connects the input of described boost rectifying circuit 1, the output of described boost rectifying circuit 1 connects respectively the two ends of described the 4th capacitor C 4, the two ends of described the 4th capacitor C 4 connect the two ends of the primary coil of described the first step-up transformer T1, described the 4th capacitor C 4 be connected the connecting circuit of primary coil of the first step-up transformer T1 and connect described switch element 2.
The power supply that is connected with the first metal-oxide-semiconductor Q1, the second metal-oxide-semiconductor Q2, the first capacitor C 1 and the capacitor C 2 of being connected should be an energy for the power supply that is fit to of circuit supply, generally should be a power circuit.
The operation principle of the utility model electronic ballast for high-pressure discharge lamp pulse starting circuit is: the high-frequency ac power of connecting described boost rectifying circuit 1, this high-frequency ac power boosts after the rectification to 4 chargings of described the 4th capacitor C through described boost rectifying circuit 1, when the voltage of described the 4th capacitor C 4 can make described switch element 2 conducting, will produce voltage at described the first step-up transformer T1 primary coil, produce a high pressure on described the first step-up transformer T1 secondary coil, bulb is lit.This structure produces large electric current at the primary coil of described the 4th capacitor C 4, switch element 2 and the first step-up transformer T1, but the secondary coil at described the first step-up transformer T1 produces a high pressure and a little electric current, therefore can guarantee the safety of described the first metal-oxide-semiconductor Q1 and the second metal-oxide-semiconductor Q2.
The first specific embodiment: described boost rectifying circuit 1 is shown in Figure 1 by five capacitor C 10, the 6th capacitor C 11, the 7th capacitor C 12, the 8th capacitor C 13, the 9th capacitor C 14, the tenth capacitor C 15, the 11 capacitor C 16, the 12 capacitor C 17, the 13 capacitor C 18, the 14 capacitor C 19, the first diode D1, the second diode D2, the 3rd diode D3, the 4th diode D4, the 5th diode D5, the 6th diode D6, the 7th diode D7, the 8th diode D8, the voltage-multiplying circuit that the 9th diode D9 and the tenth diode D10 form.
The second specific embodiment: only be with the difference of the first specific embodiment, described boost rectifying circuit 1 comprises the second step-up transformer and boost rectifying circuit 1 (not shown) that rectification circuit forms, the primary coil of described the second step-up transformer connects power supply, secondary coil connects the input of described rectification circuit, and the output of described rectification circuit connects respectively the two ends of described the 4th capacitor C 4.
For the first and the second specific embodiment, described switch element 2 preferred ceramic gas discharge tube D12 shown in Figure 3.The preferably ceramic gas discharge tube is that other the switch element that can bear large electric current 2 is also passable certainly, states no longer one by one at this because it can bear large electric current as switch element 2.
For the first and the second specific embodiment; further; described the 4th capacitor C 4 be connected the connecting circuit of primary coil of the first step-up transformer T1 and connect a current-limiting circuit 10, prevent that 4 chargings of described the 4th capacitor C are too fast, protect the safety of described the 4th capacitor C 4.
Described current-limiting circuit 10 can be composed in series for a resistance or by at least two resistance, and current-limiting circuit 10 shown in Figure 3 is composed in series by the first resistance R 1, the second resistance R 2, the 3rd resistance R 3, the 4th resistance R 4, the 5th resistance R 5, the 6th resistance R 6, the 7th resistance R 7, the 8th resistance R 8, the 9th resistance R 9 and the tenth resistance R 10.
The above only is preferred implementation of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (6)
1. an electronic ballast for high-pressure discharge lamp pulse starting circuit comprises the first metal-oxide-semiconductor, the second electric capacity, the second metal-oxide-semiconductor and the first electric capacity; It is characterized in that:
The switch element that also comprises conducting when the first step-up transformer, boost rectifying circuit, the 4th electric capacity and the discharge voltage at described the 4th electric capacity reach predetermined value;
The secondary coil of described the first step-up transformer and bulb series connection, the source electrode of described the first metal-oxide-semiconductor be connected the drain electrode of metal-oxide-semiconductor and connect, its tie point connects an end of the series circuit that secondary coil and bulb by described the first step-up transformer form, the other end of the series circuit that is comprised of with bulb the secondary coil of described the first step-up transformer connects an end of described the first electric capacity and an end of the second electric capacity, the drain electrode of the other end of described the first electric capacity and the first metal-oxide-semiconductor links to each other and is connected in an end of power supply, the other end of the source electrode of described the second metal-oxide-semiconductor and the second electric capacity links to each other and is connected in the other end of described power supply, the grid of described the first metal-oxide-semiconductor connects the first drive circuit, and the grid of described the second metal-oxide-semiconductor connects the second drive circuit; One high-frequency ac power connects the input of described boost rectifying circuit, the output of described boost rectifying circuit connects respectively the two ends of described the 4th electric capacity, the two ends of described the 4th electric capacity connect the two ends of the primary coil of described the first step-up transformer, described the 4th electric capacity be connected the connecting circuit of primary coil of the first step-up transformer and connect described switch element.
2. electronic ballast for high-pressure discharge lamp pulse starting circuit according to claim 1, it is characterized in that: described switch element is ceramic gas discharge tube.
3. electronic ballast for high-pressure discharge lamp pulse starting circuit according to claim 1 is characterized in that: described the 4th electric capacity be connected the connecting circuit of primary coil of the first step-up transformer and connect a current-limiting circuit.
4. electronic ballast for high-pressure discharge lamp pulse starting circuit according to claim 3 is characterized in that: described current-limiting circuit is a resistance or is composed in series by at least two resistance.
5. electronic ballast for high-pressure discharge lamp pulse starting circuit according to claim 1, it is characterized in that: described boost rectifying circuit is a voltage-multiplying circuit.
6. electronic ballast for high-pressure discharge lamp pulse starting circuit according to claim 1, it is characterized in that: described boost rectifying circuit comprises the second step-up transformer and a rectification circuit, the primary coil of described the second step-up transformer connects described high-frequency ac power, secondary coil connects the input of described rectification circuit, and the output of described rectification circuit connects respectively the two ends of described the 4th electric capacity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204712887U CN202799342U (en) | 2012-09-14 | 2012-09-14 | Pulse starting circuit for electronic ballast of high-pressure gas discharge lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204712887U CN202799342U (en) | 2012-09-14 | 2012-09-14 | Pulse starting circuit for electronic ballast of high-pressure gas discharge lamp |
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| Publication Number | Publication Date |
|---|---|
| CN202799342U true CN202799342U (en) | 2013-03-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012204712887U Expired - Fee Related CN202799342U (en) | 2012-09-14 | 2012-09-14 | Pulse starting circuit for electronic ballast of high-pressure gas discharge lamp |
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| Country | Link |
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| CN (1) | CN202799342U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103702497A (en) * | 2013-11-12 | 2014-04-02 | 东莞市超明亮光之光照明节能科技有限公司 | Instant-start ballast and ceramic metal halide lamp thereof |
-
2012
- 2012-09-14 CN CN2012204712887U patent/CN202799342U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103702497A (en) * | 2013-11-12 | 2014-04-02 | 东莞市超明亮光之光照明节能科技有限公司 | Instant-start ballast and ceramic metal halide lamp thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: BEIJING JINSHENGDA BIOLOGICAL ELECTRONIC TECHNOLOG Free format text: FORMER OWNER: E LINGSONG Effective date: 20140414 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 100010 DONGCHENG, BEIJING TO: 102200 CHANGPING, BEIJING |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20140414 Address after: 102200, No. 27, Chuangxin Road, Beijing, Changping District, 2 floor, building 2, Changping Science Park, Zhongguancun Patentee after: Beijing Jinshengda Biological Electronic Technology Co., Ltd. Address before: 100010, 59 South Fourth Avenue, Beijing, Dongcheng District Patentee before: E Lingsong |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130313 Termination date: 20170914 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |