CN202455635U - High-voltage pulse trigger circuit of electronic ballast - Google Patents
High-voltage pulse trigger circuit of electronic ballast Download PDFInfo
- Publication number
- CN202455635U CN202455635U CN2012200636244U CN201220063624U CN202455635U CN 202455635 U CN202455635 U CN 202455635U CN 2012200636244 U CN2012200636244 U CN 2012200636244U CN 201220063624 U CN201220063624 U CN 201220063624U CN 202455635 U CN202455635 U CN 202455635U
- Authority
- CN
- China
- Prior art keywords
- voltage
- controllable silicon
- voltage pulse
- silicon
- capacitor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Circuit Arrangements For Discharge Lamps (AREA)
Abstract
The utility model discloses a high-voltage pulse trigger circuit of an electronic ballast. The high-voltage pulse trigger circuit comprises a silicon-controlled thyristor gate trigger circuit and a silicon-controlled thyristor main circuit, and is characterized in that a charging resistor, a capacitor discharge circuit and a voltage stabilizing tube are serially connected to form the silicon-controlled thyristor main circuit, and the capacitor discharge circuit consists of a capacitor, a high-voltage pulse transformer and a silicon-controlled thyristor. High-voltage pulses are generated at a secondary winding of the high-voltage pulse transformer when the capacitor discharges electricity, a cathode of the voltage stabilizing tube is respectively connected with a cathode of the silicon-controlled thyristor and a cathode of the capacitor, an anode of the voltage stabilizing tube is connected with a ground electrode of a power source, and reverse bias voltage can be provided to the silicon-controlled thyristor, so that the silicon-control thyristor is reliably switched off.
Description
Technical field
The invention belongs to the electric ballast technical field, be specifically related to produce in the electronic ballast of high intensity gas discharge lamp circuit that high-voltage pulse triggers.
Background technology
Gaseous discharge lamp is a kind of electric light source with negative resistance charactertistic, the necessary and supporting together use of ballast.Electric ballast is used widely because of many advantages such as energy-efficient.Gaseous discharge lamp must be triggered by high voltage and light, so high-voltage triggering circuit is an important component part of electric ballast.In general high-voltage triggering circuit is divided into two big types: high voltage pulse circuits for triggering resonant high-voltage triggering circuit.
The high voltage pulse circuits for triggering are owing to circuit simply is used widely.High voltage pulse generally is to be produced by a very big transformer of primary and secondary turn ratio, and a capacitor that is full of electricity is through the elementary winding discharge of semiconductor switch to transformer, at the secondary generation high voltage of transformer.This semiconductor switch generally is field-effect transistor or controllable silicon.The shortcoming that makes field-effect transistors is that cost is high, and using the silicon controlled shortcoming is to be difficult to make reliably controllable silicon to turn-off.
The utility model content
The purpose of the utility model provides a kind of electric ballast high-voltage pulse circuits for triggering of reliable turn-off controllable silicon power switch.
For realizing above-mentioned technical purpose, the technical scheme of employing is:
Electric ballast high-voltage pulse circuits for triggering are made up of controllable silicon gate trigger circuit and controllable silicon main circuit, and it is characterized in that: the controllable silicon main circuit is made up of charging resistor, controllable silicon, clamp diode, electric capacity, high voltage pulse transformer and voltage-stabiliser tube; High voltage pulse transformer is connected with the anode of controllable silicon and electric capacity respectively, and the silicon controlled negative pole links to each other with the electric capacity negative pole; Charging resistor links to each other with dc power anode, links to each other with power supply ground with capacitor discharge loop that is made up of electric capacity, high voltage pulse transformer and controllable silicon and voltage-stabiliser tube series connection back successively.
Described clamp diode is connected in reverse parallel between silicon controlled negative electrode and the anode.
The negative electrode of said voltage-stabiliser tube is connected with the negative electrode of controllable silicon and electric capacity respectively, and the anode of voltage-stabiliser tube D is connected with power supply ground, for the controllable silicon gate pole provides reverse bias voltage, makes the controllable silicon reliable turn-off.
The beneficial effect of the utility model is:
Charging resistor and the capacitor discharge loop that constitutes by electric capacity, high voltage pulse transformer and controllable silicon; And voltage-stabiliser tube constitutes series circuit; The negative electrode of voltage-stabiliser tube is connected with the negative electrode of controllable silicon and electric capacity respectively, to gate pole reverse bias voltage is provided, and makes controllable silicon ability reliable turn-off.
When circuit charges to electric capacity, charging resistor, electric capacity and voltage-stabiliser tube series connection, electric current also flows through voltage-stabiliser tube; No matter the size of electric current, voltage-stabiliser tube two ends can both produce a constant voltage, the silicon controlled negative electrode receives the lifting of this constant voltage; Level makes controllable silicon ability reliable turn-off above Ground; If controllable silicon is conducting always, then charging resistor, controllable silicon and voltage-stabiliser tube are formed the relation of a series circuit, and be same, can produce a constant voltage at the voltage-stabiliser tube two ends, makes controllable silicon ability reliable turn-off.
Description of drawings
Below in conjunction with accompanying drawing and specific embodiments the utility model is further described:
Fig. 1 is embodiment 1 circuit diagram
Fig. 2 is embodiment 2 circuit diagrams
Embodiment
Embodiment one:
As shown in Figure 1: electric ballast high-voltage pulse circuits for triggering are made up of controllable silicon gate trigger circuit and controllable silicon main circuit.
The controllable silicon main circuit is made up of charging resistor R1, controllable silicon Q1, clamp diode D3, capacitor C 1, high voltage pulse transformer T1 and voltage-stabiliser tube D1; Charging resistor R1 one end links to each other with DC power supply Udc is anodal; The other end successively with the discharge loop that constitutes by capacitor C 1, high voltage pulse transformer T1 and controllable silicon Q1, and voltage-stabiliser tube D1 series connection back links to each other with power supply ground.The anode of capacitor C 1 links to each other with charging resistor R1, and DC power supply Udc is that capacitor C 1 provides charging current through charging resistor R1.Elementary winding W1 and the controllable silicon Q1 of capacitor C 1 and high voltage pulse transformer T1 connect into a closed discharge loop, after capacitor C 1 charging, just can on secondary winding W2, produce high-voltage pulse Uout when controllable silicon Q1 is triggered conducting.Clamp diode D3 and controllable silicon Q1 reverse parallel connection can protect controllable silicon Q1 to avoid the damage of reverse voltage.High voltage pulse transformer T1 is connected with the anode of controllable silicon Q1 and electric capacity respectively; The negative pole of controllable silicon Q1 links to each other with capacitor C 1 negative pole; The negative electrode of voltage-stabiliser tube D1 is connected with the negative electrode of controllable silicon Q1 and capacitor C 1 respectively, and the anode of voltage-stabiliser tube D is connected with power supply ground, and controllable silicon Q1 gate pole reverse bias voltage is provided, and makes controllable silicon Q1 ability reliable turn-off.
The controllable silicon gate trigger circuit is made up of resistance R 2, R3, R4 and capacitor C 2 and diac D2; Resistance R 2, R3 form a resistance series connection bleeder circuit, and this circuit is to capacitor C 2 chargings.When the voltage of capacitor C 2 reaches the puncture voltage of diac D2, the controllable silicon conducting that will be triggered, C2 is discharged simultaneously, and diac D2 recovers to end.When control circuit made transistor Q2 conducting, capacitor C 2 was by short circuit, diac D2 remain off, and not conducting of controllable silicon, the high pressure trigger impulse just is closed.
The charging current of 1 pair of capacitor C 1 of resistance R can flow through voltage-stabiliser tube D1, and according to the characteristic of voltage-stabiliser tube, no matter the size of electric current, the voltage at its two ends is constant, makes the cathode voltage lifting of controllable silicon Q1, thereby guarantees the reliable turn-off of Q1.
Embodiment two:
As shown in Figure 2; Be with the difference of embodiment one: among the embodiment one; The discharge loop that constitutes by capacitor C 1, high voltage pulse transformer T1 and controllable silicon Q1 in the controllable silicon main circuit; The anode of capacitor C 1 directly is connected with charging resistor R1, and the anode of controllable silicon Q1 is connected with charging resistor R1 through high voltage pulse transformer T1.The anode of capacitor C 1 is connected with charging resistor R1 through high voltage pulse transformer T1 in the present embodiment, and the anode of controllable silicon Q1 is connected with charging resistor R1.
Charging resistor R1 charges to capacitor C1 through the elementary winding W1 of high voltage pulse transformer T1.Because charging resistor R1 also flows through voltage stabilizing didoe D1 to the charging current of capacitor C1, thus a constant voltage can be produced at voltage-stabiliser tube D1 two ends, thus the cathode voltage of controllable silicon Q1 is raised, make controllable silicon Q1 reliable turn-off.
Claims (3)
1. electric ballast high-voltage pulse circuits for triggering are made up of controllable silicon gate trigger circuit and controllable silicon main circuit, and it is characterized in that: the controllable silicon main circuit is made up of charging resistor, controllable silicon, clamp diode, electric capacity, high voltage pulse transformer and voltage-stabiliser tube; High voltage pulse transformer is connected with the anode of controllable silicon and electric capacity respectively, and the silicon controlled negative pole links to each other with the electric capacity negative pole; Charging resistor links to each other with dc power anode, links to each other with power supply ground with capacitor discharge loop that is made up of electric capacity, high voltage pulse transformer and controllable silicon and voltage-stabiliser tube series connection back successively.
2. electric ballast high-voltage pulse circuits for triggering according to claim 1, it is characterized in that: described clamp diode is connected in reverse parallel between silicon controlled negative electrode and the anode.
3. electric ballast high-voltage pulse circuits for triggering according to claim 1 is characterized in that: the negative electrode of said voltage-stabiliser tube is connected with the negative electrode of controllable silicon and electric capacity respectively, and the anode of voltage-stabiliser tube is connected with power supply ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200636244U CN202455635U (en) | 2012-02-24 | 2012-02-24 | High-voltage pulse trigger circuit of electronic ballast |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200636244U CN202455635U (en) | 2012-02-24 | 2012-02-24 | High-voltage pulse trigger circuit of electronic ballast |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202455635U true CN202455635U (en) | 2012-09-26 |
Family
ID=46871453
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200636244U Expired - Fee Related CN202455635U (en) | 2012-02-24 | 2012-02-24 | High-voltage pulse trigger circuit of electronic ballast |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202455635U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107303194A (en) * | 2016-04-14 | 2017-10-31 | 上海卡姆南洋医疗器械股份有限公司 | A kind of new shock wave triggers circuit |
-
2012
- 2012-02-24 CN CN2012200636244U patent/CN202455635U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107303194A (en) * | 2016-04-14 | 2017-10-31 | 上海卡姆南洋医疗器械股份有限公司 | A kind of new shock wave triggers circuit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104981060B (en) | A kind of linear constant current LED drive device reducing wick quantity | |
| CN104185333A (en) | Constant-current constant-voltage circuit and illuminating device | |
| CN101203081B (en) | Supply apparatus for light modulation of LED | |
| CN209046525U (en) | A kind of MARX generator | |
| CN103956904A (en) | Fly-back electric power converter topological structure and control method thereof | |
| WO2018024037A1 (en) | Direct filtering type switching power supply | |
| CN202455635U (en) | High-voltage pulse trigger circuit of electronic ballast | |
| CN104023445A (en) | LED driving circuit | |
| CN204652731U (en) | A kind of LED power with short-circuit protection | |
| CN203859547U (en) | Super capacitor charging control device | |
| CN204305425U (en) | Transformerless constant-current power supply circuit | |
| CN104184128A (en) | Battery discharge protection method and circuit and lamp thereof | |
| CN203608102U (en) | Transistor-based switching power supply | |
| CN203086324U (en) | MOSFET driving and protecting circuit of miniwatt pulse transformer | |
| CN207251464U (en) | Anti- overshoot circuit with the damping of wide output area | |
| TWI502868B (en) | Self-oscillating and single stage high power factor driver circuit | |
| CN202285369U (en) | Single-ended primary inductor converter (Sepic) chopper circuit | |
| CN201839203U (en) | Three-level voltage dropping conversion circuit | |
| CN109981005A (en) | A kind of DC fan driving circuit and the DC fan using the driving circuit | |
| CN104519645A (en) | PWM (pulse-width modulation) dimming based light guide plate driving circuit | |
| CN106533146B (en) | Soft start switch circuit and electronic device | |
| CN204119070U (en) | A kind of switching power circuit | |
| CN203827043U (en) | Heavy-current constant-current charging circuit | |
| CN219875094U (en) | Reverse connection preventing protection circuit | |
| CN211908441U (en) | Battery reverse connection prevention circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120926 Termination date: 20130224 |