CN2698011Y - Electronic ballast with power closed loop control circuit - Google Patents
Electronic ballast with power closed loop control circuit Download PDFInfo
- Publication number
- CN2698011Y CN2698011Y CN 200420018713 CN200420018713U CN2698011Y CN 2698011 Y CN2698011 Y CN 2698011Y CN 200420018713 CN200420018713 CN 200420018713 CN 200420018713 U CN200420018713 U CN 200420018713U CN 2698011 Y CN2698011 Y CN 2698011Y
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- Prior art keywords
- pin
- switching tube
- inductance
- proportional
- connects
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- Expired - Fee Related
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Abstract
The utility model relates to an electronic ballast with a power closed loop control circuit, in particular to the electronic ballast of a gas discharge lamp of high intensity with the power closed loop control circuit. The electronic ballast with the power closed loop control circuit comprises a switch-signal generator (1), a switching tube (Q1), a switching tube (Q2), an inductor (L1), a lighting fitting (2), a capacitor (C1), a resistor (R1), a capacitor (C2), an inductor (L2), a signal amplifier (3), and a proportional and integral controller (4). The source electrode of the (Q2), one end of the (R1), one end of the (C2), and the pin 1 end of the (3) are connected with each other and connected with a digital earth; the other end of the (R1) is connected with one end of the (L2) and connected with a power earth; the other end of the (C2), the other end of the (L2), and the pin 2 end of the (3) are connected; the pin 4 end of the (3) is connected with the pin 1 end of the (4), and the pin 3 end of the (3) is connected the pin 2 end of the (4) and connected with the digital earth; the pin 4 end of the (4) is connected with the pin 1 end of the (1), and the pin 3 end of the (4) is connected with the pin 2 end of the (1) and connected with the digital earth. The utility model can automatically regulate an operating point according to operational status of the lighting fitting during operation, and the lighting fitting can do operation under the range of rated power state.
Description
Technical field:
The utility model relates to electronic ballast of high intensity gas discharge lamp, specifically is a kind of electronic ballast of high intensity gas discharge lamp that contains the power closed control circuit.
Background technology:
Because of high-intensity gas discharge lamp has negative resistance character, its working point is all different during with the light fixture operate as normal in the light fixture ignition procedures, and its working point moving range is very big, though and existing electronic ballast of high intensity gas discharge lamp has the function that adapts to the problems referred to above, but its accommodation is very little, make light fixture often be in work under the non-rated power state, cause light fixture cisco unity malfunction or accelerated ageing.
The utility model content:
The purpose of this utility model provides a kind of electric ballast that contains the power closed control circuit.The utility model can be adjusted the working point automatically according to the operating state of light fixture when work, allow light fixture be under the specified power rating scope and work.The utility model comprises switch signal generator 1, switching tube Q1, switching tube Q2, inductance L 1, light fixture 2, capacitor C 1, the pin 3 of switch signal generator 1, pin 4 connects the grid of switching tube Q2 respectively, the grid of switching tube Q1, the drain electrode of switching tube Q1 connects power supply+Ec end, the source electrode of switching tube Q1, the drain electrode of switching tube Q2 is connected with an end of inductance L 1, the other end of inductance L 1 connects a power input of light fixture 2, another power input of light fixture 2 connects Power Groud by capacitor C 1, and it also comprises resistance R 1, capacitor C 2, inductance L 2, signal amplifier 3, proportional and integral controller 4; The source electrode of switching tube Q2, one end of resistance R 1, one end of capacitor C 2 is connected with pin 1 end of signal amplifier 3 and connects digitally, the other end of resistance R 1 connects an end of inductance L 2 and connects Power Groud, the other end of capacitor C 2, the other end of inductance L 2 is connected with pin 2 ends of signal amplifier 3, pin 4 ends of signal amplifier 3 connect pin 1 end of proportional and integral controller 4, pin 3 ends of signal amplifier 3 connect pin 2 ends of proportional and integral controller 4 and connect digitally, pin 4 ends of proportional and integral controller 4 connect pin 1 end of switch signal generator 1, and pin 3 ends of proportional and integral controller 4 connect pin 2 ends of switch signal generator 1 and connect digitally.Operation principle: pin 2 ends of signal amplifier 3 receive the ac voltage signal of the source electrode of switching tube Q2 by capacitor C 2, inductance L 2, after amplifying through signal amplifier 3, this ac voltage signal again after proportional and integral controller 4 is handled, delivers to the operating frequency of coming closed-loop control switching tube Q1, Q2 in the switch signal generator 1.The utility model the time can be adjusted the working point according to the operating state of light fixture automatically in work, light fixture is under the specified power rating scope works, and it also has, and circuit is simple, cost is low, low in energy consumption and do not influence the efficient of electron rectifier.
Description of drawings:
Fig. 1 is an electrical block diagram of the present utility model.
Embodiment:
In conjunction with Fig. 1 present embodiment is described, present embodiment is by switch signal generator 1, switching tube Q1, switching tube Q2, inductance L 1, light fixture 2, capacitor C 1, and resistance R 1, capacitor C 2, inductance L 2, signal amplifier 3, proportional and integral controller 4 are formed; The pin 3 of switch signal generator 1, pin 4 connects the grid of switching tube Q2 respectively, the grid of switching tube Q1, the drain electrode of switching tube Q1 connects power supply+Ec end, the source electrode of switching tube Q1, the drain electrode of switching tube Q2 is connected with an end of inductance L 1, the other end of inductance L 1 connects a power input of light fixture 2, another power input of light fixture 2 connects Power Groud by capacitor C 1, the source electrode of switching tube Q2, one end of resistance R 1, one end of capacitor C 2 is connected with pin 1 end of signal amplifier 3 and connects digitally, the other end of resistance R 1 connects an end of inductance L 2 and connects Power Groud, the other end of capacitor C 2, the other end of inductance L 2 is connected with pin 2 ends of signal amplifier 3, pin 4 ends of signal amplifier 3 connect pin 1 end of proportional and integral controller 4, pin 3 ends of signal amplifier 3 connect pin 2 ends of proportional and integral controller 4 and connect digitally, pin 4 ends of proportional and integral controller 4 connect pin 1 end of switch signal generator 1, and pin 3 ends of proportional and integral controller 4 connect pin 2 ends of switch signal generator 1 and connect digitally.The model that switch signal generator 1 is selected for use is TL494, and the model that switching tube Q1, switching tube Q2 select for use all is IRFP540, and the model that signal amplifier 3 is selected for use is LF358, and the model that proportional and integral controller 4 is selected for use is LF358.
Claims (1)
1, the electric ballast that contains the power closed control circuit, it comprises switch signal generator (1), switching tube (Q1), switching tube (Q2), inductance (L1), light fixture (2), electric capacity (C1), the pin 3 of switch signal generator (1), pin 4 connects the grid of switching tube (Q2) respectively, the grid of switching tube (Q1), the drain electrode connection power supply of switching tube (Q1) (+Ec) hold, the source electrode of switching tube (Q1), the drain electrode of switching tube (Q2) is connected with an end of inductance (L1), the other end of inductance (L1) connects a power input of light fixture (2), another power input of light fixture (2) connects Power Groud by electric capacity (C1), it is characterized in that it also comprises resistance (R1), electric capacity (C2), inductance (L2), signal amplifier (3), proportional and integral controller (4); The source electrode of switching tube (Q2), one end of resistance (R1), one end of electric capacity (C2) is connected with pin 1 end of signal amplifier (3) and connects digitally, the other end of resistance (R1) connects an end of inductance (L2) and connects Power Groud, the other end of electric capacity (C2), the other end of inductance (L2) is connected with pin 2 ends of signal amplifier (3), pin 4 ends of signal amplifier (3) connect pin 1 end of proportional and integral controller (4), pin 3 ends of signal amplifier (3) connect pin 2 ends of proportional and integral controller (4) and connect digitally, pin 4 ends of proportional and integral controller (4) connect pin 1 end of switch signal generator (1), and pin 3 ends of proportional and integral controller (4) connect pin 2 ends of switch signal generator (1) and connect digitally.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420018713 CN2698011Y (en) | 2004-04-02 | 2004-04-02 | Electronic ballast with power closed loop control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420018713 CN2698011Y (en) | 2004-04-02 | 2004-04-02 | Electronic ballast with power closed loop control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2698011Y true CN2698011Y (en) | 2005-05-04 |
Family
ID=34769420
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420018713 Expired - Fee Related CN2698011Y (en) | 2004-04-02 | 2004-04-02 | Electronic ballast with power closed loop control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2698011Y (en) |
-
2004
- 2004-04-02 CN CN 200420018713 patent/CN2698011Y/en not_active Expired - Fee Related
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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: 20050504 |