CN202799338U - Circuit used for reverse connection protection electronic ballast - Google Patents
Circuit used for reverse connection protection electronic ballast Download PDFInfo
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- CN202799338U CN202799338U CN2012203960413U CN201220396041U CN202799338U CN 202799338 U CN202799338 U CN 202799338U CN 2012203960413 U CN2012203960413 U CN 2012203960413U CN 201220396041 U CN201220396041 U CN 201220396041U CN 202799338 U CN202799338 U CN 202799338U
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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 discloses a circuit used for a reverse connection protection electronic ballast. The circuit is mainly constituted by a voltage stabilization filter circuit (1), a booster protection circuit (2), a valley-fill filter circuit (3), a self excitation high frequency circuit (4), and a resonance protection circuit (5). By using the circuit used for the reverse connection protection electronic ballast, the electronic elements can be protected from being broken down at the peak value, when the abrupt change in voltage occurs, therefore the service lifetime of the electronic products can be prolonged.
Description
Technical field
The utility model relates to electronic application field, specifically refers to a kind of reverse connecting protection electric ballast circuit.
Background technology
At present, fluorescent lamp and electricity-saving lamp are the electrical equipment that people often will use, because these electrical equipment are all next luminous by filament heating or filament ionized gas, therefore all need to use in use electric ballast.But the circuit of the employed electric ballast of people inside neither has good back-emf defencive function at present; do not have good filter action yet; therefore when the voltage of input peak value sudden change, a large amount of first and second harmonic wave of appearance occur because of a variety of causes; just there is larger potential safety hazard in this electron rectifier, is unfavorable for being widely used and promoting of people.
The utility model content
The purpose of this utility model is to overcome the defective that electric ballast internal circuit in the prior art does not have peak value back-emf defencive function and good filter function; provide a kind of simple in structure, can effectively realize a kind of reverse connecting protection electric ballast circuit of peak value back-emf defencive function and filter function.
The purpose of this utility model is achieved through the following technical solutions: a kind of reverse connecting protection electric ballast circuit, and mainly by being connected in series successively the filter circuit of pressure-stabilizing that forms, the protective circuit of boosting, forming by power filter, excitation high frequency circuit and resonant protection circuit.
Described filter circuit of pressure-stabilizing is comprised of inductance L 1, inductance L 2 and capacitor C 1 and capacitor C 2, after linking to each other with an end of inductance L 1 and inductance L 2 respectively, the two ends of described capacitor C 1 form the filtering input, form filtering output end after the two ends of capacitor C 2 then link to each other with the other end of inductance L 1 and inductance L 2 respectively, also be parallel with respectively diode D in inductance L 1 and inductance L 2 places simultaneously.
Described resistance R 1 and the capacitor C 3 of protective circuit by mutual serial connection of boosting, one end is connected to bidirectional trigger diode DB and the diode D3 between dividing potential drop R1 and the capacitor C 3, and the reverse-connection protection circuit that is connected between the output of the input of resistance R 1 and bidirectional trigger diode DB forms; This reverse-connection protection circuit is then by successively fuse F, diode D1 and the relay K of serial connection, and the diode D2 that is in parallel with relay K forms; Contact between described fuse F and the resistance R 1 is connected with the tie point of inductance L 1 with capacitor C 2 by the normally opened contact of relay K, and the other end of capacitor C 3 then is connected with the tie point of capacitor C 2 with inductance L 2.
Described low frequency filtering electric capacity TC1 and the diode D6 that comprises mutual serial connection by power filter, the diode D4 and the low frequency filtering electric capacity TC2 that mutually are connected in series, be serially connected in the diode D5 between the tie point of the tie point of low frequency filtering electric capacity TC1 and diode D6 and diode D4 and low frequency filtering electric capacity TC2, the inductance L 3 and the capacitor C 4 that mutually are connected in series, in turn fuse F3, diode D31, the diode D32 of serial connection, and the relay K 3 that is in parallel with diode D32; The input of the positive pole of the other end of described fuse F3, low frequency filtering electric capacity TC1, the N utmost point of diode D4 and inductance L 3 all is connected with the output of bidirectional trigger diode DB behind the normally opened contact of relay K 3; The P utmost point of diode D32 is connected with the tie point of inductance L 3 with capacitor C 4; The negative pole of the other end of capacitor C 4, low frequency filtering electric capacity TC2 then all is connected with the other end of capacitor C 3 with the P utmost point of diode D6.
Described excitation high frequency circuit comprises field-effect transistor Q1, field-effect transistor Q2, the coupling rectification circuit that is in parallel with field-effect transistor Q1 and field-effect transistor Q2, and reverse-connection protection circuit forms; Wherein and the coupling rectification circuit that is in parallel of field-effect transistor Q1 by the inductance coil L43 between the grid that is connected to field-effect transistor Q1 and the drain electrode, the diode DT1 and the diode DT2 that mutually are connected with inductance coil L43 two ends after the serial connection form again; And the coupling rectification circuit that field-effect transistor Q2 is in parallel is mainly by the inductance coil L42 between the grid that is connected to field-effect transistor Q2 and the drain electrode, and the diode DT3 that is connected with inductance coil L42 two ends again after mutually being connected in series and diode DT4 composition; Described reverse-connection protection circuit is by in turn relay K 4, diode DT7, fuse F4 and the inductance coil L41 of serial connection, and the diode DT8 that is in parallel with relay K 4 forms; Simultaneously, field-effect transistor Q1 is connected with inductance L 3 behind the normally opened contact of relay K 4 with the tie point of field-effect transistor Q2; The drain electrode of field-effect transistor Q2 also is connected with the negative pole of low frequency filtering electric capacity TC2.
Described resonant protection circuit is by field-effect transistor Q3; the capacitor C 5 that one end is connected with the grid of field-effect transistor Q3, the other end is connected with the drain electrode of field-effect transistor Q1 after capacitor C 6, capacitor C 8 successively; be serially connected in the capacitor C 7 between the drain electrode of the tie point of capacitor C 5 and capacitor C 6 and field-effect transistor Q1, and form with inductance L 4 that capacitor C 8 is in parallel.
The utility model is compared than prior art, has the following advantages and beneficial effect:
(1) filter circuit construction of the present utility model simple, be convenient to make and safeguard.
(2) have reverse-connection protection circuit in the circuit of the present utility model, even if therefore connect inverse time at power supply, the crest voltage of power supply can not puncture electric equipment yet, thereby prolongs the useful life of electric equipment.
(3) the utility model can be guaranteed the structural safety of excitation high frequency circuit, the probability of effectively reduction accident generation by the cooperating of excitation high frequency circuit and reverse-connection protection circuit.
Description of drawings
Fig. 1 is overall structure schematic diagram of the present utility model.
Embodiment
Below in conjunction with embodiment the utility model is described in further detail, but execution mode of the present utility model is not limited to this.
Embodiment
As shown in Figure 1, the filter circuit of pressure-stabilizing 1, the protective circuit of boosting 2 that are formed by serial connection successively of the utility model integral body, form by power filter 3, excitation high frequency circuit 4 and resonant protection circuit 5 these five parts.
As shown in the figure, this filter circuit of pressure-stabilizing 1 is comprised of inductance L 1, inductance L 2 and capacitor C 1 and capacitor C 2, after linking to each other with an end of inductance L 1 and inductance L 2 respectively, the two ends of described capacitor C 1 form the filtering input, form filtering output end after the two ends of capacitor C 2 then link to each other with the other end of inductance L 1 and inductance L 2 respectively, also be parallel with respectively diode D in inductance L 1 and inductance L 2 places simultaneously.
Described resistance R 1 and the capacitor C 3 of protective circuit by mutual serial connection of boosting, one end is connected to bidirectional trigger diode DB and the diode D3 between dividing potential drop R1 and the capacitor C 3, and the reverse-connection protection circuit that is connected between the output of the input of resistance R 1 and bidirectional trigger diode DB forms; This reverse-connection protection circuit is then by successively fuse F, diode D1 and the relay K of serial connection, and the diode D2 that is in parallel with relay K forms; Contact between described fuse F and the resistance R 1 is connected with the tie point of inductance L 1 with capacitor C 2 by the normally opened contact of relay K, and the other end of capacitor C 3 then is connected with the tie point of capacitor C 2 with inductance L 2.
Described low frequency filtering electric capacity TC1 and the diode D6 that comprises mutual serial connection by power filter, the diode D4 and the low frequency filtering electric capacity TC2 that mutually are connected in series, be serially connected in the diode D5 between the tie point of the tie point of low frequency filtering electric capacity TC1 and diode D6 and diode D4 and low frequency filtering electric capacity TC2, the inductance L 3 and the capacitor C 4 that mutually are connected in series, in turn fuse F3, diode D31, the diode D32 of serial connection, and the relay K 3 that is in parallel with diode D32; The input of the positive pole of the other end of described fuse F3, low frequency filtering electric capacity TC1, the N utmost point of diode D4 and inductance L 3 all is connected with the output of bidirectional trigger diode DB behind the normally opened contact of relay K 3; The P utmost point of diode D32 is connected with the tie point of inductance L 3 with capacitor C 4; The negative pole of the other end of capacitor C 4, low frequency filtering electric capacity TC2 then all is connected with the other end of capacitor C 3 with the P utmost point of diode D6.
Described excitation high frequency circuit comprises field-effect transistor Q1, field-effect transistor Q2, the coupling rectification circuit that is in parallel with field-effect transistor Q1 and field-effect transistor Q2, and reverse-connection protection circuit forms; Wherein and the coupling rectification circuit that is in parallel of field-effect transistor Q1 by the inductance coil L43 between the grid that is connected to field-effect transistor Q1 and the drain electrode, the diode DT1 and the diode DT2 that mutually are connected with inductance coil L43 two ends after the serial connection form again; And the coupling rectification circuit that field-effect transistor Q2 is in parallel is mainly by the inductance coil L42 between the grid that is connected to field-effect transistor Q2 and the drain electrode, and the diode DT3 that is connected with inductance coil L42 two ends again after mutually being connected in series and diode DT4 composition; Described reverse-connection protection circuit is by in turn relay K 4, diode DT7, fuse F4 and the inductance coil L41 of serial connection, and the diode DT8 that is in parallel with relay K 4 forms; Simultaneously, field-effect transistor Q1 is connected with inductance L 3 behind the normally opened contact of relay K 4 with the tie point of field-effect transistor Q2; The drain electrode of field-effect transistor Q2 also is connected with the negative pole of low frequency filtering electric capacity TC2.
Described resonant protection circuit is by field-effect transistor Q3; the capacitor C 5 that one end is connected with the grid of field-effect transistor Q3, the other end is connected with the drain electrode of field-effect transistor Q1 after capacitor C 6, capacitor C 8 successively; be serially connected in the capacitor C 7 between the drain electrode of the tie point of capacitor C 5 and capacitor C 6 and field-effect transistor Q1, and 4 groups of inductance L that is in parallel with capacitor C 8.
As mentioned above, just can well realize the utility model.
Claims (6)
1. reverse connecting protection electric ballast circuit is characterized in that: filter circuit of pressure-stabilizing (1), the protective circuit of boosting (2) that is mainly formed by serial connection successively, form by power filter (3), excitation high frequency circuit (4) and resonant protection circuit (5).
2. a kind of reverse connecting protection electric ballast circuit according to claim 1; it is characterized in that: described filter circuit of pressure-stabilizing (1) is comprised of inductance L 1, inductance L 2 and capacitor C 1 and capacitor C 2; after linking to each other with an end of inductance L 1 and inductance L 2 respectively, the two ends of described capacitor C 1 form the filtering input; form filtering output end after the two ends of capacitor C 2 then link to each other with the other end of inductance L 1 and inductance L 2 respectively, also be parallel with respectively diode D in inductance L 1 and inductance L 2 places simultaneously.
3. a kind of reverse connecting protection electric ballast circuit according to claim 2, it is characterized in that: the described protective circuit of boosting (2) is by resistance R 1 and the capacitor C 3 of mutual serial connection, one end is connected to bidirectional trigger diode DB and the diode D3 between dividing potential drop R1 and the capacitor C 3, and the reverse-connection protection circuit that is connected between the output of the input of resistance R 1 and bidirectional trigger diode DB forms; This reverse-connection protection circuit is then by successively fuse F, diode D1 and the relay K of serial connection, and the diode D2 that is in parallel with relay K forms; Contact between described fuse F and the resistance R 1 is connected with the tie point of inductance L 1 with capacitor C 2 by the normally opened contact of relay K, and the other end of capacitor C 3 then is connected with the tie point of capacitor C 2 with inductance L 2.
4. a kind of reverse connecting protection electric ballast circuit according to claim 3, it is characterized in that: described low frequency filtering electric capacity TC1 and the diode D6 that comprises mutual serial connection by power filter (3), the diode D4 and the low frequency filtering electric capacity TC2 that mutually are connected in series, be serially connected in the diode D5 between the tie point of the tie point of low frequency filtering electric capacity TC1 and diode D6 and diode D4 and low frequency filtering electric capacity TC2, the inductance L 3 and the capacitor C 4 that mutually are connected in series, the fuse F3 that is connected in series in turn, diode D31, diode D32, and the relay K 3 that is in parallel with diode D32; The input of the positive pole of the other end of described fuse F3, low frequency filtering electric capacity TC1, the N utmost point of diode D4 and inductance L 3 all is connected with the output of bidirectional trigger diode DB behind the normally opened contact of relay K 3; The P utmost point of diode D32 is connected with the tie point of inductance L 3 with capacitor C 4; The negative pole of the other end of capacitor C 4, low frequency filtering electric capacity TC2 then all is connected with the other end of capacitor C 3 with the P utmost point of diode D6.
5. according to right 4 described a kind of reverse connecting protection electric ballast circuit, it is characterized in that: described excitation high frequency circuit (4) comprises field-effect transistor Q1, field-effect transistor Q2, the coupling rectification circuit that is in parallel with field-effect transistor Q1 and field-effect transistor Q2, and reverse-connection protection circuit forms; Wherein and the coupling rectification circuit that is in parallel of field-effect transistor Q1 by the inductance coil L43 between the grid that is connected to field-effect transistor Q1 and the drain electrode, the diode DT1 and the diode DT2 that mutually are connected with inductance coil L43 two ends after the serial connection form again; And the coupling rectification circuit that field-effect transistor Q2 is in parallel is mainly by the inductance coil L42 between the grid that is connected to field-effect transistor Q2 and the drain electrode, and the diode DT3 that is connected with inductance coil L42 two ends again after mutually being connected in series and diode DT4 composition; Described reverse-connection protection circuit is by in turn relay K 4, diode DT7, fuse F4 and the inductance coil L41 of serial connection, and the diode DT8 that is in parallel with relay K 4 forms; Simultaneously, field-effect transistor Q1 is connected with inductance L 3 behind the normally opened contact of relay K 4 with the tie point of field-effect transistor Q2; The drain electrode of field-effect transistor Q2 also is connected with the negative pole of low frequency filtering electric capacity TC2.
6. according to right 5 described a kind of reverse connecting protection electric ballast circuit; it is characterized in that: described resonant protection circuit (5) is by field-effect transistor Q3; the capacitor C 5 that one end is connected with the grid of field-effect transistor Q3, the other end is connected with the drain electrode of field-effect transistor Q1 after capacitor C 6, capacitor C 8 successively; be serially connected in the capacitor C 7 between the drain electrode of the tie point of capacitor C 5 and capacitor C 6 and field-effect transistor Q1, and form with inductance L 4 that capacitor C 8 is in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203960413U CN202799338U (en) | 2012-08-12 | 2012-08-12 | Circuit used for reverse connection protection electronic ballast |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203960413U CN202799338U (en) | 2012-08-12 | 2012-08-12 | Circuit used for reverse connection protection electronic ballast |
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| Publication Number | Publication Date |
|---|---|
| CN202799338U true CN202799338U (en) | 2013-03-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012203960413U Withdrawn - After Issue CN202799338U (en) | 2012-08-12 | 2012-08-12 | Circuit used for reverse connection protection electronic ballast |
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| Country | Link |
|---|---|
| CN (1) | CN202799338U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102791068A (en) * | 2012-08-12 | 2012-11-21 | 成都方拓科技有限公司 | Reverse connection circuit for protecting electronic ballast |
-
2012
- 2012-08-12 CN CN2012203960413U patent/CN202799338U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102791068A (en) * | 2012-08-12 | 2012-11-21 | 成都方拓科技有限公司 | Reverse connection circuit for protecting electronic ballast |
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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: LEI MINGFANG Free format text: FORMER OWNER: CHENGDU FANGTUO TECHNOLOGY CO., LTD. Effective date: 20130619 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 610000 CHENGDU, SICHUAN PROVINCE TO: 641300 ZIYANG, SICHUAN PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20130619 Address after: 641300, No. fourteen, group 4, big weir village, Linjiang Town, Yanjiang District, Sichuan, Ziyang Patentee after: Lei Mingfang Address before: West high tech Zone Chengdu city Sichuan province 610000 City Road No. 399 Patentee before: Chengdu Fangta Technology Co.,Ltd. |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20130313 Effective date of abandoning: 20140507 |
|
| RGAV | Abandon patent right to avoid regrant |