CN201928498U - Novel electronic ballast with double-sampling abnormal protection circuit - Google Patents
Novel electronic ballast with double-sampling abnormal protection circuit Download PDFInfo
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- CN201928498U CN201928498U CN2011200233569U CN201120023356U CN201928498U CN 201928498 U CN201928498 U CN 201928498U CN 2011200233569 U CN2011200233569 U CN 2011200233569U CN 201120023356 U CN201120023356 U CN 201120023356U CN 201928498 U CN201928498 U CN 201928498U
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Abstract
The utility model discloses novel electronic ballast with a double-sampling abnormal protection circuit, which comprises an EMC (electromagnetic compatibility) filter circuit, a bridge rectifier circuit, a high-frequency oscillating circuit, a resonant inductor and the abnormal protection circuit, wherein the EMC filter circuit, the bridge rectifier circuit, the high-frequency oscillating circuit and the resonant inductor are connected sequentially, and the abnormal protection circuit is connected with both the high-frequency oscillating circuit and the resonant inductor. The resonant inductor consists of a primary winding and a secondary winding; one end of the primary winding of the resonant inductor is connected with a light source; an intermediate point of the secondary winding of the resonant inductor is grounded; a winding head of the secondary winding and the intermediate point of the secondary winding form a first secondary winding; and a winding tail of the secondary winding and the intermediate point of the secondary winding form a second secondary winding. When the electronic ballast is operated in abnormity under any voltage values of 90%-110% of the rated power voltage, damage to safety is avoided, and overheating of a lamp holder is not caused by the ballast when the service life of a lamp is over.
Description
[technical field]
The invention discloses a kind of novel two sampling abnormal protection line electricity sub-ballast.
[background technology]
The control device of lamp: electric ballast; most of electric ballast that uses discrete part to form the abnormal protection circuit on the existing market; when working under the abnormality of existing electric ballast under any magnitude of voltage of the 90%-110% of rated supply voltage; fail safe suffers damage easily; and when the end-of-life of lamp; ballast can make the phenomenon of lamp holder excessive heating; be difficult to meet the specific (special) requirements (GB 19510.4-2009/IEC61347-2-3:2000) of fluorescent-lamp-use alternating electron ballast; the alternating electron ballast of forming low-cost abnormity protection circuit by discrete component is become by the asymmetric power test in rectifying effect test and the local rectifying effect respectively research and develop engineering staff's research of technique, the main direction of breakthrough.
[summary of the invention]
The present invention has overcome the deficiency of above-mentioned technology; a kind of novel two sampling abnormal protection line electricity sub-ballast of showing unique characteristics is provided; thereby when realizing working under the abnormality of electric ballast under any magnitude of voltage of the 90%-110% of rated supply voltage; fail safe not occurring suffers damage; and ballast does not make the phenomenon of lamp holder excessive heating when the end-of-life of lamp, meets the requirement of (GB 19510.4-2009/IEC 61347-2-3:2000).
For achieving the above object, the present invention has adopted following technical proposal:
A kind of novel two sampling abnormal protection line electricity sub-ballast, comprise the EMC filter circuit 1 that connects in turn, bridge rectifier 2, high-frequency oscillating circuits 3, resonant inductance L3 and the abnormity protection circuit 4 that all is connected with high-frequency oscillating circuits 3 and resonance inductance L 3, described resonant inductance L3 is made up of main winding and time winding, resonant inductance L3 main winding one termination light source, the intermediate point ground connection of L3 winding of resonant inductance, the winding head of inferior winding with time constitute winding for the first time around the intermediate point of winding, the winding tail of inferior winding with constitute winding for the second time around inferior intermediate point around winding;
Described abnormity protection circuit 5 comprises two signal sampling branch roads, controllable silicon Q3, and the startup capacitor C 7 of control high-frequency oscillating circuits 3 work and control triode Q4; Two signal sampling branch road one ends are connected with the winding tail with the winding head of L3 winding of resonant inductance respectively, after being connected together, the other end of two signal sampling branch roads all is connected with control triode Q4 base stage with the control utmost point of controllable silicon Q3, the anode of controllable silicon Q3 is by resistance R 27-R22, R11, link to each other with the anodal VCC of bridge rectifier 2 behind the R10, the negative electrode of controllable silicon Q3 is by resistance R 21 back ground connection (being the negative pole of bridge rectifier 2); Start capacitor C 7 one ends and pass through to be connected with the anode of controllable silicon Q3 behind resistance R 7, the R6, starting capacitor C 7 should link to each other with the following half-bridge of high-frequency oscillating circuits 3 by end simultaneously, startup capacitor C 7 other end ground connection; The collector electrode of control triode Q4 links to each other with the following half-bridge of high-frequency oscillating circuits, the grounded emitter of control triode Q4.
The invention has the beneficial effects as follows: this ballast adopts the mode of the two sampling of the abnormity protection circuit bidirectional protective that shows unique characteristics; make when working under the abnormality of electric ballast under any magnitude of voltage of the 90%-110% of rated supply voltage; by rectifying effect test and asymmetric power test; do not occur fail safe suffer damage and when the end-of-life of lamp; ballast does not make the phenomenon of lamp holder excessive heating, meets the requirement of (GB 19510.4-2009/IEC 61347-2-3:2000).
[description of drawings]
Fig. 1 is a block diagram of the present utility model;
Fig. 2 is circuit theory diagrams of the present utility model.
[embodiment]
A kind of novel two sampling abnormal protection line electricity sub-ballast, comprise the EMC filter circuit 1 that connects in turn, bridge rectifier 2, high-frequency oscillating circuits 3, resonant inductance L3 and the abnormity protection circuit 4 that all is connected with high-frequency oscillating circuits 3 and resonance inductance L 3, described resonant inductance L3 is made up of main winding and time winding, resonant inductance L3 main winding one termination light source, the intermediate point ground connection of L3 winding of resonant inductance, the winding head of inferior winding with time constitute winding for the first time around the intermediate point of winding, the winding tail of inferior winding with constitute winding for the second time around inferior intermediate point around winding;
Described abnormity protection circuit 5 comprises two signal sampling branch roads, controllable silicon Q3, and the startup capacitor C 7 of control high-frequency oscillating circuits 3 work and control triode Q4; Two signal sampling branch road one ends are connected with the winding tail with the winding head of L3 winding of resonant inductance respectively, after being connected together, the other end of two signal sampling branch roads all is connected with control triode Q4 base stage with the control utmost point of controllable silicon Q3, the anode of controllable silicon Q3 is by resistance R 27-R22, R11, link to each other with the anodal VCC of bridge rectifier 2 behind the R10, the negative electrode of controllable silicon Q3 is by resistance R 21 back ground connection (being the negative pole of bridge rectifier 2); Start capacitor C 7 one ends and pass through to be connected with the anode of controllable silicon Q3 behind resistance R 7, the R6, starting capacitor C 7 should link to each other with the following half-bridge of high-frequency oscillating circuits 3 by end simultaneously, startup capacitor C 7 other end ground connection; The collector electrode of control triode Q4 links to each other with the following half-bridge of high-frequency oscillating circuits, the grounded emitter of control triode Q4.
The circuit structure of described two signal sampling branch roads is identical, and one of them signal sampling props up
The road comprises capacitor C 12, diode D10, resistance R 5, electrochemical capacitor C13, voltage-stabiliser tube DB1, described capacitor C 12 1 ends are connected with the winding head of L3 winding of resonant inductance, the other end of capacitor C 12 is connected with the positive pole of diode D10, the negative pole of diode D10 is connected by resistance R 5 and electrochemical capacitor C13 are anodal, electrochemical capacitor C13 positive pole by resistance R 19 and voltage-stabiliser tube DB1 after with the control utmost point of controllable silicon Q3 and control triode Q4 base stage and be connected electrochemical capacitor C13 minus earth respectively.Another signal sampling branch road comprises capacitor C 14, diode D15, resistance R 9, electrochemical capacitor C15, voltage-stabiliser tube DB2, described capacitor C 14 1 ends are connected with the winding tail of L3 winding of resonant inductance, the other end of capacitor C 14 is connected with the positive pole of diode D15, the negative pole of diode D15 is connected with electrochemical capacitor C15 is anodal by resistance R 9, electrochemical capacitor C15 positive pole is connected electrochemical capacitor C15 minus earth respectively with the control utmost point of controllable silicon Q3 and control triode Q4 base stage after by resistance R 17 and voltage-stabiliser tube DB2.
The winding first time of described resonant inductance L3 is identical with the number of turns of winding for the second time, for the first time winding and the electric phase place of winding is opposite for the second time.Respectively be parallel with a diode in the first time winding and the second time on the winding.
Civil power is directly sent into high-frequency oscillating circuits behind EMC filter circuit and bridge rectifier, electric ballast is started working.When lamp work, but in the negative electrode one during by (rectifying effect) deexcitation or that damage, and protective circuit is started working, and makes electric ballast enter guard mode, and does not damage; When the end-of-life of lamp, protective circuit makes the power of its negative electrode be no more than 7.5W (T5), thereby prevents negative electrode excessive heating (asymmetric power test).
Claims (4)
1. novel two sampling abnormal protection line electricity sub-ballast, comprise the EMC filter circuit (1) that connects in turn, bridge rectifier (2), high-frequency oscillating circuits (3), resonant inductance (L3) and the abnormity protection circuit (4) that all is connected with high-frequency oscillating circuits (3) and resonant inductance (L3), it is characterized in that: described resonant inductance (L3) is made up of main winding and time winding, resonant inductance (L3) main winding one termination light source, the intermediate point ground connection of the inferior winding of resonant inductance (L3), the winding head of inferior winding with time constitute winding for the first time around the intermediate point of winding, the winding tail of inferior winding with constitute winding for the second time around inferior intermediate point around winding;
Described abnormity protection circuit (5) comprises two signal sampling branch roads, controllable silicon (Q3), and the startup electric capacity (C7) of control high-frequency oscillating circuits (3) work and control triode (Q4); Two signal sampling branch road one ends are connected with the winding tail with the winding head of the inferior winding of resonant inductance (L3) respectively, after being connected together, the other end of two signal sampling branch roads all is connected with control triode (Q4) base stage with the control utmost point of controllable silicon (Q3), the anode of controllable silicon (Q3) links to each other with the positive pole of bridge rectifier (2), the minus earth of controllable silicon (Q3); Start electric capacity (C7) end and link to each other, start electric capacity (C7) other end ground connection with the anode of controllable silicon (Q3) and the following half-bridge of high-frequency oscillating circuits (3); The collector electrode of control triode (Q4) links to each other with the following half-bridge of high-frequency oscillating circuits, the grounded emitter of control triode (Q4).
2. a kind of novel two sampling abnormal protection line electricity according to claim 1 sub-ballast; it is characterized in that described signal sampling branch road comprises electric capacity; diode; resistance; electrochemical capacitor; voltage-stabiliser tube; described electric capacity one end is connected with the winding head or tail of the inferior winding of resonant inductance (L3); the other end of electric capacity is connected with the positive pole of diode; the negative pole of diode is connected by resistance and electrochemical capacitor are anodal; electrochemical capacitor is anodal by being connected the electrochemical capacitor minus earth respectively with the control utmost point and control triode (Q4) base stage of controllable silicon (Q3) behind the voltage-stabiliser tube.
3. a kind of novel two sampling abnormal protection line electricity according to claim 1 sub-ballast is characterized in that the winding and the number of turns of winding the is identical for the second time first time of described resonant inductance (L3), for the first time winding and the second time winding electric phase place opposite.
4. a kind of novel two sampling abnormal protection line electricity according to claim 1 sub-ballast is characterized in that respectively being parallel with a diode in the first time winding and the second time on the winding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200233569U CN201928498U (en) | 2011-01-25 | 2011-01-25 | Novel electronic ballast with double-sampling abnormal protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200233569U CN201928498U (en) | 2011-01-25 | 2011-01-25 | Novel electronic ballast with double-sampling abnormal protection circuit |
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| Publication Number | Publication Date |
|---|---|
| CN201928498U true CN201928498U (en) | 2011-08-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200233569U Expired - Lifetime CN201928498U (en) | 2011-01-25 | 2011-01-25 | Novel electronic ballast with double-sampling abnormal protection circuit |
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| CN (1) | CN201928498U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102111945A (en) * | 2011-01-25 | 2011-06-29 | 中山市欧普照明股份有限公司 | Novel double-sampling abnormal protection circuit electronic ballast |
-
2011
- 2011-01-25 CN CN2011200233569U patent/CN201928498U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102111945A (en) * | 2011-01-25 | 2011-06-29 | 中山市欧普照明股份有限公司 | Novel double-sampling abnormal protection circuit electronic ballast |
| CN102111945B (en) * | 2011-01-25 | 2014-05-28 | 欧普照明电器（中山）有限公司 | Novel electronic ballast with double sampling abnormal protection circuits |
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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: SUZHOU OPPLE LIGHTING CO., LTD. Free format text: FORMER OWNER: ZHONGSHAN OPPLE LIGHTING CO., LTD. Effective date: 20120711 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20120711 Address after: 528421 east of Fen Yang Road, Fen Hu Economic Development Zone, Wujiang, Guangdong Patentee after: SUZHOU OPPLE LIGHTING CO., LTD. Address before: 528421 OPPLE building, east coast road, Guzhen Town, Zhongshan, Guangdong Patentee before: Zhongshan Opple Lighting Co., Ltd. |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20110810 Effective date of abandoning: 20140528 |
|
| RGAV | Abandon patent right to avoid regrant |