CN201674715U - Electronic ballast with HID lamp load shorted-to-earth short-circuit protection - Google Patents
Electronic ballast with HID lamp load shorted-to-earth short-circuit protection Download PDFInfo
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- CN201674715U CN201674715U CN2010202064895U CN201020206489U CN201674715U CN 201674715 U CN201674715 U CN 201674715U CN 2010202064895 U CN2010202064895 U CN 2010202064895U CN 201020206489 U CN201020206489 U CN 201020206489U CN 201674715 U CN201674715 U CN 201674715U
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- hid lamp
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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
The utility model relates to an electronic ballast with high intensity air discharge (HID) lamp shorted-to-earth short-circuit protection, including an external power source, wherein the external power source is connected to a normal power module, the normal power module is connected to the input terminal of a microcontroller, the output terminal of the microcontroller is respectively connected to a low-voltage high impedance circuit and a half-bridge drive control circuit, the output terminals of the low-voltage high impedance circuit and the half-bridge drive control circuit are connected to a half-bridge inverter circuit, the half-bridge inverter circuit is connected to an output circuit, the output circuit is connected to an earth leakage-current detection module, the earth leakage-current detection module is connected to the input terminal of the microcontroller, before the main circuit is powered on, a high-pressure not enough to startup the HID lamp generated by the low-voltage high impedance circuit and the half-bridge drive control circuit is added to the current detection module to detect the current in the circuit, when the shorting or insulating ability to earth of the HID lamp is broken, the leakage current exceeds the amplitude value, the microcontroller controls a switch-off main circuit to realize the protection to the electronic ballast.
Description
Technical field
The utility model relates to a kind of electric ballast, especially the electric ballast of high-intensity gas discharge lamp shorted to earth protection.
Background technology
When HID lamp shorted to earth, can produce the electric current more much bigger in the circuit than normal current, this electric current meeting grievous injury HID lamp and electric ballast, but also do not develop the electric ballast that can realize the protection of HID lamp shorted to earth at present.
Summary of the invention
The purpose of this utility model provides a kind of electric ballast that can realize the protection of HID lamp shorted to earth.
For achieving the above object, the utility model has adopted following technical scheme: this electric ballast comprises external power source, described external power source links to each other with the input of normal power module, the output of normal power module links to each other with the input of microcontroller, the output of microcontroller links to each other with the input of low pressure high impedance circuit with the half-bridge driven control circuit respectively, the output of low pressure high impedance circuit and half-bridge driven control circuit links to each other with the input of half-bridge inversion circuit, the output of half-bridge inversion circuit links to each other with output circuit, output circuit links to each other with the Ground leakage current detection module, and the output of Ground leakage current detection module links to each other with the input of microcontroller.
As shown from the above technical solution; before main circuit powers on; produce the high pressure that is not enough to start the HID lamp by low pressure high impedance circuit and Drive and Control Circuit; this high pressure is added in get on electric current in the check circuit of Ground leakage current detection module; when the HID lamp exists shorted to earth or insulating capacity destroyed; microprocessor controls is turn-offed main circuit, thereby has realized the protection to HID lamp and electric ballast.
Description of drawings
Fig. 1 is a theory diagram of the present utility model;
Fig. 2 is the circuit theory diagrams of output circuit in the utility model;
Fig. 3 is the theory diagram of the utility model embodiment.
Embodiment
As shown in Figure 1, the utility model comprises external power source 1, described external power source 1 links to each other with the input of normal power module 2, the output of described normal power module 2 links to each other with the input of microcontroller 3, the output of described microcontroller 3 links to each other with half-bridge driven control circuit 5 with low pressure high impedance circuit 4 respectively, the output of described low pressure high impedance circuit 4 and half-bridge driven control circuit 5 links to each other with half-bridge inversion circuit 6, half-bridge inversion circuit 6 links to each other with the output circuit 7 at HID lamp place, output circuit 7 links to each other with Ground leakage current detection module 8, and the output of Ground leakage current detection module 8 links to each other with the input of described microcontroller 3.
As shown in Figure 2, described output circuit 7 comprises LC series resonant circuit 11, microcontroller 3 control low pressure high impedance circuits 4 and half-bridge driven control circuit 5 output signals produce the high pressure that is not enough to start the HID lamp through LC series resonant circuit 11, whether described Ground leakage current detection module 8 obtains these high pressure, detect the HID lamp and exist short circuit or insulating capacity destroyed.The short circuit of described detection HID lamp comprises HID lamp shorted to earth, i.e. any one electrode or two electrode groundings in two electrodes.
As shown in Figure 3, described electric ballast also comprises voltage detection module 9, and the input of described voltage detection module 9 links to each other with external power source 1, and the output of temperature detecting module 10 and described voltage detection module 9 links to each other with the input of described microcontroller 3.
By voltage detection module 8 and temperature detecting module 9, prevented to damage electric ballast because of electric voltage exception or temperature anomaly.
Described microcontroller 3 is a singlechip microcontroller, and therefore the advantage that single-chip microcomputer has is able to programme, computational speed is fast makes the response of this electric ballast rapidly.
Below in conjunction with Fig. 1,2,3 explanations operation principle of the present utility model, after external power source 1 is connected, normal power module 2, voltage detection module 9 and singlechip microcontroller 3, whether voltage detection module 9 detects voltage and occurs unusually, whether temperature detecting module 10 detected temperatures occur unusually, when voltage and temperature anomaly, singlechip microcontroller 3 signals can for low pressure high impedance circuit 4 and half-bridge driven control circuit 5, simultaneously allowed voltage detection module 9 and temperature detecting module 10 detect voltage and temperature value once more every 30 seconds, when voltage and temperature just often, singlechip microcontroller 3 is sent signal by low pressure high impedance circuit 4 and 5 work of half-bridge driven control circuit, low pressure high impedance circuit 4 output low pressure high impedance signals, the control signal of half-bridge driven control circuit 5 output from high frequency to the low frequency frequency sweep, its frequency covers the frequency that LC series resonant circuit 11 is produced, generation is not enough to start the high pressure of HID lamp, this high pressure outputs on the Ground leakage current detection module 8, Ground leakage current detection module 8 detects the electric current that flows through for the first time, when the HID lamp exists short circuit or insulating capacity destroyed, singlechip microcontroller 3 is to 5 control signals of half-bridge driven control circuit, half-bridge driven control circuit 5 signals to half-bridge inversion circuit 6, half-bridge inversion circuit 6 is closed main circuit, singlechip microcontroller 3 allowed Ground leakage current detection module 8 detect once more every 30 seconds, get rid of up to fault, if the HID lamp is not unusual, singlechip microcontroller 3 is sent control signal and is stopped half-bridge driven control circuit 5 earlier, stop low pressure high impedance circuit 4 again, subsequent signal is by half-bridge inversion circuit 6 work, the output circuit 11 at HID lamp place is started working like this, and the HID lamp is activated.
Claims (4)
1. the electric ballast of HID lamp load shorted to earth protection; it is characterized in that: comprise external power source (1); described external power source (1) links to each other with the input of normal power module (2); the output of described normal power module (2) links to each other with the input of microcontroller (3); the output of described microcontroller (3) links to each other with the input of low pressure high impedance circuit (4) with half-bridge driven control circuit (5) respectively; the output of described low pressure high impedance circuit (4) and half-bridge driven control circuit (5) links to each other with the input of half-bridge inversion circuit (6); the output of described half-bridge inversion circuit (6) links to each other with the output circuit (7) at HID lamp place; the output of described output circuit (7) links to each other with the input of Ground leakage current detection module (8), and the output of described Ground leakage current detection module (8) links to each other with the input of described microcontroller (3).
2. the electric ballast of HID lamp load shorted to earth protection according to claim 1, it is characterized in that: described output circuit (7) comprises LC series resonant circuit (11).
3. the electric ballast of HID lamp load shorted to earth protection according to claim 1; it is characterized in that: described electric ballast also comprises voltage detection module (9); the input of described voltage detection module (9) links to each other with external power source (1), and the output of temperature detecting module (10) and described voltage detection module (9) links to each other with the input of described microcontroller (3).
4. according to the electric ballast of claim 1 or 3 described HID lamp load shorted to earth protections, it is characterized in that: described microcontroller (3) is singlechip microcontroller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202064895U CN201674715U (en) | 2010-05-25 | 2010-05-25 | Electronic ballast with HID lamp load shorted-to-earth short-circuit protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202064895U CN201674715U (en) | 2010-05-25 | 2010-05-25 | Electronic ballast with HID lamp load shorted-to-earth short-circuit protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201674715U true CN201674715U (en) | 2010-12-15 |
Family
ID=43332121
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202064895U Expired - Lifetime CN201674715U (en) | 2010-05-25 | 2010-05-25 | Electronic ballast with HID lamp load shorted-to-earth short-circuit protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201674715U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107613626A (en) * | 2017-10-25 | 2018-01-19 | 苏州纽克斯电源技术股份有限公司 | Output detection protection circuit and HID lamp AC electronic ballast |
-
2010
- 2010-05-25 CN CN2010202064895U patent/CN201674715U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107613626A (en) * | 2017-10-25 | 2018-01-19 | 苏州纽克斯电源技术股份有限公司 | Output detection protection circuit and HID lamp AC electronic ballast |
| CN107613626B (en) * | 2017-10-25 | 2021-01-26 | 苏州纽克斯电源技术股份有限公司 | Output detection protection circuit and alternating current electronic ballast for HID lamp |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 230031, Anhui Hefei new industrial park, Shushan Gang Kong Road, No. 68, 6 bases of scientific and technological achievements transformation base, four Patentee after: Hefei Daming Energy-Saving Technology Co.,Ltd. Address before: 230031, Anhui Hefei new industrial park, Shushan Gang Kong Road, No. 68, 6 bases of scientific and technological achievements transformation base, four Patentee before: Hefei Fitbright Electronic Technology Co., Ltd. |
|
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 4 building, No. 6, Zhenxing Road, Shushan new industrial park, Anhui, Hefei, 230031 Patentee after: HEFEI MING ENERGY-SAVING TECHNOLOGY Co.,Ltd. Address before: 230031, Anhui Hefei new industrial park, Shushan Gang Kong Road, No. 68, 6 bases of scientific and technological achievements transformation base, four Patentee before: Hefei Daming Energy-Saving Technology Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101215 |