CN2692962Y - Intelligent self-restoring fluorescent lamp electronic ballast - Google Patents
Intelligent self-restoring fluorescent lamp electronic ballast Download PDFInfo
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- CN2692962Y CN2692962Y CN 200420021481 CN200420021481U CN2692962Y CN 2692962 Y CN2692962 Y CN 2692962Y CN 200420021481 CN200420021481 CN 200420021481 CN 200420021481 U CN200420021481 U CN 200420021481U CN 2692962 Y CN2692962 Y CN 2692962Y
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Abstract
The utility model relates to an intelligent self-restoring electronic ballast for fluorescent lamps. When the abnormal phenomena occurs, a trigger tube DB3 is conducted to reduce the voltage of a point C and to switch off a triode V1 for realizing protection; simultaneously, a triode V4 is conducted and the electrical potential of a point D is cut down to zero potential because of the high potential of the point A, so a triode V2 is thoroughly switched off. After the protection, the ballast stops working and feedback signals from an output choke L3 disappear and the protection can be maintained because of energy storage action of capacitors C15, C16; when the electric discharge is completed, the ballast restarts; when the failure is removed, the fluorescent lamp enters normal work; when the failure is not removed, the ballast continuously carry out protection. The utility model can realize rapid and reliable protection and can be automatically recovered to enter normal work, having the advantage of convenient operation.
Description
Technical field
The utility model relates to a kind of electronic ballast for fluoresent lamp.
Background technology
Along with the idea of green illumination is more and more accepted by consumers in general, the use of electronic ballast for fluoresent lamp also more and more widely.In use, we find through regular meeting, and fluorescent lamp tube leaks air, short circuit appears in filament blow or circuit or when opening circuit, and are very many owing to ballast does not carry out the phenomenon that self-protection damages in time.For these anomalies, on the safety standard and performance standard of China, clear and definite regulation is arranged all about the cast electronic ballast for fluoresent lamp, electric ballast must self-protection.
Normally used protection circuit mainly is as shown in Figure 1 on the electronic ballast for fluoresent lamp now: when operate as normal; can produce the voltage of a feedback on the auxiliary winding of output choke L3; this voltage generally can not surpass the trigger voltage of trigger tube DB3 after diode D9 rectification, electrochemical capacitor C15 filtering, resistance R 11, R12 dividing potential drop.When anomaly occurring; feedback voltage will make trigger tube DB3 conducting above trigger voltage, and for the control utmost point of controllable silicon V3 provides a cut-in voltage, the conducting of controllable silicon V3 will make triode V4 conducting; thereby triode V2 is quit work, reach the purpose of protection.Simultaneously owing to pass through resistance R 1, R2, R3, the afterflow effect of controllable silicon V3, protective circuit realization self-locking.
The major advantage of this protective circuit is that protection is rapid, reliable.But after fault is got rid of, must switch on again and could start once more.This installs than higher occasion for occasion or the lamp position used in the large tracts of land in market and so on, bothers very much.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of electronic ballast for fluoresent lamp, and when abnormality appearred in fluorescent tube, it can quit work in the short time at the utmost point; After fault was got rid of, it can very fast automatic identification, and activate again, starts working, and has embodied intelligent from recovery characteristics.
In order to solve the problems of the technologies described above, the utility model has adopted following technical proposals: this protective circuit comprises storage capacitor C15, diode D9, and resistance R 11, they are connected mutually with the auxiliary winding of output choke L3, form the loop; Resistance R 12, itself and storage capacitor C15 are in parallel; Capacitor C 16, the one end is connected with resistance R 12, other end ground connection; Triode V4, its base stage is connected with the positive pole of storage capacitor C15, its grounded emitter, the tie point of collector electrode and resistance R 3 and resistance R 4 joins; After resistance R 3, resistance R 4 were connected mutually, two ends were connected to the base stage of emitter (by resistance R 5) Yu the triode V2 of triode V1 respectively; Trigger tube DB3 by with the negative pole of receiving capacitor C 15 after resistance R 13 is connected, the base stage with triode V2 is connected then.
Electronic ballast for fluoresent lamp of the present utility model can realize protection rapidly, reliable, fault can recover to enter operate as normal after getting rid of automatically, thus handled easily greatly.
Description of drawings
Fig. 1 is the circuit theory diagrams of prior art electronic ballast for fluoresent lamp.
Fig. 2 is the circuit theory diagrams of the utility model electronic ballast for fluoresent lamp.
Embodiment
Electric ballast of the present utility model comprises protective circuit, as shown in Figure 2.This protective circuit comprises storage capacitor C15, diode D9, and resistance R 11, they are connected mutually with the auxiliary winding of output choke L3, form the loop; Resistance R 12, itself and storage capacitor C15 are in parallel; Capacitor C 16, the one end is connected with resistance R 12, other end ground connection; Triode V4, its base stage is connected with the positive pole of storage capacitor C15, its grounded emitter, the tie point of collector electrode and resistance R 3 and resistance R 4 joins; After resistance R 3, resistance R 4 were connected mutually, two ends were connected to the base stage of emitter (by resistance R 5) Yu the triode V2 of triode V1 respectively; Trigger tube DB3 by with the negative pole of receiving capacitor C 15 after resistance R 13 is connected, the base stage with triode V2 is connected then.
When operate as normal, on the auxiliary winding of output choke L3, can produce a feedback voltage, after diode D9 rectification, on capacitor C 15, form the negative voltage signal of the positive B of A.When anomaly occurring, this signal can increase rapidly, and the B point voltage is reduced.And then make trigger tube DB3 conducting, and the C point voltage is lowered, turn-off triode V1, realize protection.Because the high potential that A is ordered makes triode V4 conducting, D point current potential is dropped to zero potential simultaneously, make the shutoff of triode V2 more thorough.
After the protection, ballast quits work, from the feedback signal disappearance of output choke L3, but because the accumulation of energy effect of capacitor C 15, C16, protection will be kept.The time of keeping is by determining the discharge time on the discharge resistance R12.After discharge is finished, ballast will as fault eliminating this moment, will enter operate as normal from new startup, and as getting rid of as yet, ballast will change protection again over to.
Claims (1)
1, a kind of intelligent from recovering electronic ballast for fluoresent lamp, comprise protective circuit, it is characterized in that, this protective circuit comprises: storage capacitor (C15), diode (D9), resistance (R11), they are connected mutually with the auxiliary winding of output choke (L3), form the loop; Resistance (R12), itself and storage capacitor (C15) are in parallel; Electric capacity (C16), the one end is connected other end ground connection with resistance (R12); Triode (V4), its base stage is connected with the positive pole of storage capacitor (C15), its grounded emitter, the tie point of collector electrode and resistance (R3) and resistance (R4) joins; After resistance (R3), resistance (R4) were connected mutually, two ends were connected to the base stage of emitter (passing through R5) Yu the triode (V2) of triode (V1) respectively; Trigger tube (DB3) by with the negative pole of receiving electric capacity (C15) after resistance (R13) is connected, the base stage with triode (V2) is connected then.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420021481 CN2692962Y (en) | 2004-03-31 | 2004-03-31 | Intelligent self-restoring fluorescent lamp electronic ballast |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420021481 CN2692962Y (en) | 2004-03-31 | 2004-03-31 | Intelligent self-restoring fluorescent lamp electronic ballast |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2692962Y true CN2692962Y (en) | 2005-04-13 |
Family
ID=34769977
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420021481 Expired - Lifetime CN2692962Y (en) | 2004-03-31 | 2004-03-31 | Intelligent self-restoring fluorescent lamp electronic ballast |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2692962Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105208758A (en) * | 2015-10-15 | 2015-12-30 | 上海笙荣森电子有限公司 | Electronic ballast with overvoltage protection and self-recovery restart functions |
| CN106843440A (en) * | 2017-02-03 | 2017-06-13 | 广东欧珀移动通信有限公司 | A kind of mobile terminal restarts control method, device and mobile terminal |
-
2004
- 2004-03-31 CN CN 200420021481 patent/CN2692962Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105208758A (en) * | 2015-10-15 | 2015-12-30 | 上海笙荣森电子有限公司 | Electronic ballast with overvoltage protection and self-recovery restart functions |
| CN105208758B (en) * | 2015-10-15 | 2018-12-28 | 上海笙荣森电子有限公司 | A kind of electric ballast for restarting function with overvoltage protection self- recoverage |
| CN106843440A (en) * | 2017-02-03 | 2017-06-13 | 广东欧珀移动通信有限公司 | A kind of mobile terminal restarts control method, device and mobile terminal |
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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 | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20140331 Granted publication date: 20050413 |
|
| DD01 | Delivery of document by public notice |
Addressee: Zhang Zhixian Document name: Notification of Expiration of Patent Right Duration |