CN211606848U - HID lamp driving circuit - Google Patents
HID lamp driving circuit Download PDFInfo
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- CN211606848U CN211606848U CN201921728183.3U CN201921728183U CN211606848U CN 211606848 U CN211606848 U CN 211606848U CN 201921728183 U CN201921728183 U CN 201921728183U CN 211606848 U CN211606848 U CN 211606848U
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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
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- 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 provides a HID lamp drive circuit, include: the input filter unit, the rectifying unit, the constant voltage trigger unit and the half-bridge inverter circuit; the input filtering unit is used for filtering input noise and high-frequency interference signals; the rectifying unit is connected with the output end of the input filtering unit and is used for rectifying the alternating current and outputting direct-current working voltage; the constant-voltage trigger unit comprises a single chip microcomputer control circuit and a constant-voltage trigger circuit, the single chip microcomputer control circuit is used for generating control voltage, and the constant-voltage trigger circuit is used for triggering the starting of the HID lamp; half-bridge inverter circuit with be used for driving the work of HID lamp, the utility model discloses circuit structure is simple, low cost and guaranteed the safety and stability start-up of HID lamp.
Description
Technical Field
The utility model relates to a lighting apparatus drives technical field, especially involves a HID lamp drive circuit.
Background
At present, a High Intensity Discharge (HID) lamp is widely used because of its advantages of no flicker, no insect attraction, High light brightness, strong penetrating power, etc., an existing HID lamp driving circuit generally includes a rectifying filter circuit, a power factor correction circuit, a voltage reduction circuit, a full-bridge inverter and an ignition circuit, which are connected in sequence, an input end of the rectifying filter circuit is connected with a mains supply, and an output end of the full-bridge inverter and the ignition circuit is connected with a load.
In summary, it is a problem to be solved by those skilled in the art to provide a HID lamp driving circuit capable of starting and using safely and stably.
SUMMERY OF THE UTILITY MODEL
The present solution addresses the above-mentioned problems and needs and proposes an HID lamp driving circuit that solves the above-mentioned technical problems by adopting the following technical solutions.
In order to achieve the above object, the utility model provides a following technical scheme: an HID lamp driving circuit comprising: the input filter unit, the rectifying unit, the constant voltage trigger unit and the half-bridge inverter circuit; the input filtering unit is used for filtering input noise and high-frequency interference signals; the rectifying unit is connected with the output end of the input filtering unit and is used for rectifying the alternating current and outputting direct-current working voltage; the constant-voltage trigger unit comprises a single chip microcomputer control circuit and a constant-voltage trigger circuit, the single chip microcomputer control circuit is used for generating control voltage, and the constant-voltage trigger circuit is used for triggering the starting of the HID lamp; the half-bridge inverter circuit is used for driving the HID lamp to work.
Further, the input filter unit comprises a nonpolar capacitor C1 and a common mode inductor L1, the nonpolar capacitor C1 is connected in parallel between the positive and negative ends of the alternating current, a pin one and a pin four of the common mode inductor L1 are connected in parallel, and a pin two and a pin three of the common mode inductor L1 form an output end of the input filter unit.
Further, the rectifying unit is a bridge rectifier, and the bridge rectifier comprises four rectifying diodes.
Further, the single chip microcomputer control circuit comprises a single chip microcomputer, a 555 chip, a resistor R1, a resistor R2, a triode Q1, a diode D1, a nonpolar capacitor C2 and a nonpolar capacitor C3, wherein a collector of the triode Q1 is connected with a first output end of the rectifying unit, an emitter of the triode Q1 is grounded, a base of the triode Q1 is connected with a resistor R1 in series and then connected with a pin II of the 555 chip, an output end of the single chip microcomputer is connected with a pin five of the 555 chip, a pin seven and a pin six of the 555 chip are connected in parallel and then connected with one end of the resistor R2 and one end of the nonpolar capacitor C2 in parallel, the other end of the nonpolar capacitor C2 is grounded, the other end of the resistor R2 is connected with a cathode of the diode D1, an anode of the diode D1 is connected with one end of the nonpolar capacitor C3 in parallel and then connected with an output end of the half-bridge, the other end of the nonpolar capacitor C3 is connected with the output end of the constant voltage trigger circuit, and the input end of the constant voltage trigger circuit is connected with the three phases of the pins of the 555 chip.
Furthermore, the constant voltage trigger circuit comprises a resistor R3, a resistor R4, a bidirectional thyristor and a diode D2, wherein one end of the resistor R3 is connected with a pin of the 555 chip in a three-phase manner, the other end of the resistor R3 is connected with the anode of the diode D2, the first anode of the bidirectional thyristor and one end of the resistor R4 in parallel, and the other end of the resistor R4 is connected with the second anode of the bidirectional thyristor and the cathode of the diode D2 in parallel and then connected with one end of the nonpolar capacitor C3 in parallel.
Further, the half-bridge inverter circuit comprises two MOS tubes, and the MOS tubes are of an N-channel type.
Further, the transistor Q1 is an NPN transistor.
Furthermore, the HID lamp driving circuit further includes an HID lamp unit, the HID lamp unit includes a non-polar capacitor C4, a non-polar capacitor C5, an inductor L2 and an inductor L3, the non-polar capacitor C4 is connected in parallel between a first output terminal of the half-bridge inverter circuit and one end of the inductor L2, the first output terminal of the half-bridge inverter circuit and a second output terminal of the rectifier unit are connected in parallel, the other end of the inductor L2 is connected to the second output terminal of the half-bridge inverter circuit, the non-polar capacitor C5 is connected in parallel between a third output terminal of the half-bridge inverter circuit and one end of the inductor L2, a primary coil of the inductor L3 is connected in parallel to both ends of the non-polar capacitor C4, and a secondary coil of the inductor L3 is connected to the HID lamp.
The beneficial effects of the utility model are that, this utility model circuit structure is simple, low cost, adopts PWM control to carry out effective control to the circuit, and has guaranteed the safety and stability start-up of HID lamp.
The following description of the preferred embodiments for carrying out the present invention will be made in detail with reference to the accompanying drawings so that the features and advantages of the present invention can be easily understood.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments of the present invention will be briefly described below. The drawings are intended to depict only some embodiments of the invention, and not all embodiments of the invention are limited thereto.
Fig. 1 is a schematic diagram of a structure of a HID lamp driving circuit according to the present invention.
Detailed Description
In order to make the technical solution of the present invention, its purpose, technical solution and advantages become clearer, the drawings of the embodiments of the present invention will be combined hereinafter, and the technical solution of the embodiments of the present invention will be clearly and completely described. Like reference symbols in the various drawings indicate like elements. It should be noted that the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive work based on the described embodiments of the present invention, belong to the protection scope of the present invention.
As shown in fig. 1, the utility model provides a HID lamp drive circuit can guarantee to start at HID lamp safety and stability in the use, include: the input filter unit, the rectifying unit, the constant voltage trigger unit and the half-bridge inverter circuit; the input filtering unit is used for filtering input noise and high-frequency interference signals; the rectifying unit is connected with the output end of the input filtering unit and is used for rectifying the alternating current and outputting direct-current working voltage; the constant-voltage trigger unit comprises a single chip microcomputer control circuit and a constant-voltage trigger circuit, the single chip microcomputer control circuit is used for generating control voltage, and the constant-voltage trigger circuit is used for triggering the starting of the HID lamp; the half-bridge inverter circuit is used for driving the HID lamp to work.
The input filtering unit comprises a nonpolar capacitor C1 and a common mode inductor L1, the nonpolar capacitor C1 is connected between the positive end and the negative end of alternating current in parallel, a pin I and a pin IV of the common mode inductor L1 are connected in parallel, a pin II and a pin III of the common mode inductor L1 form the output end of the input filtering unit, and the capacitor C1 is a filtering capacitor and can effectively filter noise and interference signals when the input filtering unit and the inductor are used together; the rectifier unit is the bridge rectifier, the bridge rectifier includes four rectifier diodes, and the bridge rectifier can export direct current operating voltage, guarantees the need voltage of back circuit, half-bridge inverter circuit includes two MOS pipes, the MOS pipe is the N channel type.
The singlechip control circuit comprises a singlechip, a 555 chip, a resistor R1, a resistor R2, a triode Q1, a diode D1, a nonpolar capacitor C2 and a nonpolar capacitor C3, the model of the singlechip adopted in the embodiment is STC89C51, a collector of the triode Q1 is connected with a first output end of the rectifying unit, an emitter of the triode Q1 is grounded, a base of the triode Q1 is connected with a resistor R1 in series and then connected with a pin II of the 555 chip, an output end of the singlechip is connected with a pin V of the 555 chip, a pin seven and a pin six of the 555 chip are connected in parallel and then connected with one end of the resistor R2 and one end of the nonpolar capacitor C2 in parallel, the other end of the nonpolar capacitor C2 is grounded, the other end of the resistor R2 is connected with a cathode of the diode D1, an anode of the diode D1 is connected with one end of the nonpolar capacitor C3 in parallel and then connected with the output end of the half-bridge, the other end of the nonpolar capacitor C3 is connected with the output end of the constant voltage trigger circuit, the input end of the constant voltage trigger circuit is connected with the pins of the 555 chip in a three-phase mode, wherein the triode Q1 is an NPN type triode, and the singlechip control circuit can generate a stable PWM control signal.
The constant-voltage trigger circuit comprises a resistor R3, a resistor R4, a bidirectional thyristor and a diode D2, one end of the resistor R3 is connected with a pin of the 555 chip in three phases, the other end of the resistor R3 is connected with the anode of the diode D2, the first anode of the bidirectional thyristor is connected with one end of the resistor R4 in parallel, the other end of the resistor R4 is connected with the second anode of the bidirectional thyristor and the cathode of the diode D2 in parallel and then connected with one end of a non-polar capacitor C3 in parallel, and the safety starting of the circuit is guaranteed through the matching of a rectifying circuit and a voltage trigger circuit.
The HID lamp driving circuit further comprises an HID lamp unit, the HID lamp unit comprises a nonpolar capacitor C4, a nonpolar capacitor C5, an inductor L2 and an inductor L3, the nonpolar capacitor C4 is connected in parallel between a first output end of the half-bridge inverter circuit and one end of the inductor L2, the first output end of the half-bridge inverter circuit is connected in parallel with a second output end of the rectifying unit, the other end of the inductor L2 is connected with the second output end of the half-bridge inverter circuit, the nonpolar capacitor C5 is connected in parallel between a third output end of the half-bridge inverter circuit and one end of the inductor L2, a primary coil of the inductor L3 is connected in parallel with two ends of the nonpolar capacitor C4, a secondary coil of the inductor L3 is connected with the HID lamp, and a driving signal output by the inverter circuit can light the HID lamp through inductive coupling.
It should be noted that the embodiments of the present invention are only the preferred embodiments for implementing the present invention, and all the obvious modifications and changes belonging to the overall concept of the present invention should fall within the protection scope of the present invention.
Claims (8)
1. An HID lamp driver circuit, comprising: the input filter unit, the rectifying unit, the constant voltage trigger unit and the half-bridge inverter circuit; the input filtering unit is used for filtering input noise and high-frequency interference signals;
the rectifying unit is connected with the output end of the input filtering unit and is used for rectifying the alternating current and outputting direct-current working voltage;
the constant-voltage trigger unit comprises a single chip microcomputer control circuit and a constant-voltage trigger circuit, the single chip microcomputer control circuit is used for generating control voltage, and the constant-voltage trigger circuit is used for triggering the starting of the HID lamp;
the half-bridge inverter circuit is used for driving the HID lamp to work.
2. The HID lamp driving circuit of claim 1, wherein the input filter unit comprises a non-polar capacitor C1 and a common mode inductor L1, the non-polar capacitor C1 is connected in parallel between the positive and negative terminals of the alternating current, a pin one and a pin four of the common mode inductor L1 are connected in parallel, and a pin two and a pin three of the common mode inductor L1 form the output terminal of the input filter unit.
3. The HID lamp driving circuit of claim 1 wherein the rectifying unit is a bridge rectifier, the bridge rectifier including four rectifying diodes.
4. The HID lamp driving circuit according to claim 1, wherein the single-chip microcomputer control circuit comprises a single-chip microcomputer, a 555 chip, a resistor R1, a resistor R2, a triode Q1, a diode D1, a non-polar capacitor C2 and a non-polar capacitor C3, wherein a collector of the triode Q1 is connected with the first output end of the rectifying unit, an emitter of the triode Q1 is grounded, a base of the triode Q1 is connected with a resistor R1 in series and then connected with a second pin of the 555 chip, an output end of the single-chip microcomputer is connected with a fifth pin of the 555 chip, a seventh pin and a sixth pin of the 555 chip are connected in parallel and then connected with one end of the resistor R2 and one end of the non-polar capacitor C2 in parallel, the other end of the non-polar capacitor C2 is grounded, the other end of the resistor R2 is connected with a cathode of the diode D1, an anode of the diode D1 is connected with one end of the non-polar capacitor C3 in parallel and then, the other end of the nonpolar capacitor C3 is connected with the output end of the constant voltage trigger circuit, and the input end of the constant voltage trigger circuit is connected with the three phases of the pins of the 555 chip.
5. The HID lamp driving circuit according to claim 4, wherein the constant voltage trigger circuit comprises a resistor R3, a resistor R4, a triac and a diode D2, wherein one end of the resistor R3 is connected with a pin of the 555 chip in three phases, the other end of the resistor R3 is connected with an anode of a diode D2, a first anode of the triac and one end of a resistor R4 in parallel, and the other end of the resistor R4 is connected with a second anode of the triac and a cathode of the diode D2 in parallel and then connected with one end of the non-polar capacitor C3 in parallel.
6. The HID lamp driver circuit of claim 1 wherein said half bridge inverter circuit includes two MOS transistors, said MOS transistors being of the N-channel type.
7. An HID lamp driver circuit as claimed in claim 4, wherein said transistor Q1 is an NPN transistor.
8. The HID lamp driving circuit of claim 6, further comprising an HID lamp unit, wherein the HID lamp unit comprises a non-polar capacitor C4, a non-polar capacitor C5, an inductor L2 and an inductor L3, the non-polar capacitor C4 is connected in parallel between a first output terminal of the half-bridge inverter circuit and one end of the inductor L2, the first output terminal of the half-bridge inverter circuit and a second output terminal of the rectifier unit are connected in parallel, the other end of the inductor L2 is connected with the second output terminal of the half-bridge inverter circuit, the non-polar capacitor C5 is connected in parallel between a third output terminal of the half-bridge inverter circuit and one end of the inductor L2, a primary coil of the inductor L3 is connected in parallel between two ends of the non-polar capacitor C4, and a secondary coil of the inductor L3 is connected with the HID lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921728183.3U CN211606848U (en) | 2019-10-16 | 2019-10-16 | HID lamp driving circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921728183.3U CN211606848U (en) | 2019-10-16 | 2019-10-16 | HID lamp driving circuit |
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| CN211606848U true CN211606848U (en) | 2020-09-29 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112600425A (en) * | 2020-12-02 | 2021-04-02 | 南京民联仪器制造有限公司 | Low-current controllable rectifier working in ultralow-frequency dielectric loss measuring device and rectification control method thereof |
-
2019
- 2019-10-16 CN CN201921728183.3U patent/CN211606848U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112600425A (en) * | 2020-12-02 | 2021-04-02 | 南京民联仪器制造有限公司 | Low-current controllable rectifier working in ultralow-frequency dielectric loss measuring device and rectification control method thereof |
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Effective date of registration: 20230215 Address after: Room 3011, Building 4, No. 9, Sanshanji Road, Banqiao Street, Yuhuatai District, Nanjing City, Jiangsu Province, 210000 Patentee after: Nanjing Shuimu Xinzan Enterprise Management Co.,Ltd. Address before: 362000 No. 268 Huancheng South Road, Nan'an City, Quanzhou City, Fujian Province Patentee before: NAN'AN ZHENBANG FAMILY FARM Co.,Ltd. |
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Effective date of registration: 20230423 Address after: Room 1105, Building 5, 181 Xianlin Avenue, Xigang Street, Qixia District, Nanjing City, Jiangsu Province, 210000 Patentee after: Jiangsu Hongjing Integrated Technology Co.,Ltd. Address before: 210000 Room 3011, Building 4, No. 9, Sanshanji Road, Banqiao Street, Yuhuatai District, Nanjing City, Jiangsu Province Patentee before: Nanjing Shuimu Xinzan Enterprise Management Co.,Ltd. |