CN202799345U - Passive valley-fill filter reverse connection protection circuit used for electronic ballast - Google Patents
Passive valley-fill filter reverse connection protection circuit used for electronic ballast Download PDFInfo
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- CN202799345U CN202799345U CN2012203960432U CN201220396043U CN202799345U CN 202799345 U CN202799345 U CN 202799345U CN 2012203960432 U CN2012203960432 U CN 2012203960432U CN 201220396043 U CN201220396043 U CN 201220396043U CN 202799345 U CN202799345 U CN 202799345U
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- diode
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- filter circuit
- capacitor
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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 passive valley-fill filter reverse connection protection circuit used for an electronic ballast constituted by a passive valley-fill filter circuit (1), an LC filter circuit (2) connected with the passive valley-fill filter circuit (1), and a reverse connection protection circuit (3) connected with the passive valley-fill filter circuit (1) and the LC filter circuit (2). By adopting the reverse connection protection circuit provided in the utility model, the passive valley-fill filter reverse connection protection circuit has the filter function and the reverse connection protection function at the same time, therefore the breakdown of an electric appliance caused by a peak voltage can be effectively prevented.
Description
Technical field
The utility model relates to electronic application field, refers to that specifically a kind of electric ballast flows the filtering reverse-connection protection circuit with passive pursuing.
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 filter circuit of the employed electric ballast of people inside is common filter circuit at present; do not have good reversal connection protection function; therefore when reversal connection appears in power supply, the peak value back-emf of these voltages just can the breakdown potential sub-ballast, and then the damage electric equipment.
The utility model content
The filter circuit that the purpose of this utility model is to overcome electric ballast in the prior art does not have the defective of reversal connection protection function; provide a kind of not only simple in structure, but also the electric ballast with reversal connection protection function with passive by stream filtering reverse-connection protection circuit.
The purpose of this utility model is achieved through the following technical solutions: electric ballast flows the filtering reverse-connection protection circuit with passive pursuing; mainly by the passive stream filter circuit that pursues; with this by the LC filter circuit that is connected of stream filter circuit, and form with the passive reverse-connection protection circuit that all is connected by stream filter circuit and LC filter circuit.
Further, described reverse-connection protection circuit is by successively fuse F, diode D1 and the diode D2 of serial connection, and the relay K that is in parallel with diode D2 forms.
Described passive low frequency filtering capacitor C 1 and the diode D5 that comprises mutual serial connection by the stream filter circuit, mutually diode D3 and the low frequency filtering capacitor C 2 of serial connection, and be serially connected in diode D4 between the tie point of the tie point of low frequency filtering capacitor C 1 and diode D5 and diode D3 and low frequency filtering capacitor C 2; Described diode D3 all is connected in series with the normally opened contact of relay K mutually with the input of low frequency filtering capacitor C 1, and diode D5 then is connected with the output of low frequency filtering capacitor C 1.
Described LC filter circuit is comprised of inductance L 1 and the capacitor C 3 of mutual serial connection; The other end of described inductance L 1 is connected with the link of capacitor C 1 with diode D3, and the other end of capacitor C 3 then is connected with the link of low frequency filtering capacitor C 2 with diode D5; Relay K then is connected with the tie point of inductance L 1 with capacitor C 3 with the link of diode D2.
The utility model is compared than prior art, has the following advantages and beneficial effect:
(1) the utility model small volume, configuration is simple, has saved cost, and has realized energy-efficiently, can produce in enormous quantities.
(2) owing to be provided with reverse-connection protection circuit in the utility model, therefore can guarantee that the utility model also has reversal connection protection function when having filter function, prevent that effectively electrical equipment is by peak voltage breakdown.
Description of drawings
Fig. 1 is the utility model electrical block diagram.
Wherein, the component names that Reference numeral is corresponding is:
1-passive by stream filter circuit, 2-LC filter circuit, 3-reverse-connection protection circuit.
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; main circuit of the present utility model will be by three the electric circuit constitutes; be passive by stream filter circuit 1, with this by the LC filter circuit 2 that is connected of stream filter circuit 1, and form with the passive reverse-connection protection circuit 3 that all is connected by stream filter circuit 1 and LC filter circuit 2.
Described reverse-connection protection circuit 3 is by successively fuse F, diode D1 and the diode D2 of serial connection, and the relay K that is in parallel with diode D2 forms.
Described passive low frequency filtering capacitor C 1 and the diode D5 that comprises mutual serial connection by stream filter circuit 1, mutually diode D3 and the low frequency filtering capacitor C 2 of serial connection, and be serially connected in diode D4 between the tie point of the tie point of low frequency filtering capacitor C 1 and diode D5 and diode D3 and low frequency filtering capacitor C 2.Simultaneously, diode D3 all is connected in series with the normally opened contact of relay K mutually with the input of low frequency filtering capacitor C 1, and diode D5 then is connected with the output of low frequency filtering capacitor C 1.
Described LC filter circuit 2 is comprised of inductance L 1 and the capacitor C 3 of mutual serial connection; The other end of described inductance L 1 is connected with the link of capacitor C 1 with diode D3, and the other end of capacitor C 3 then is connected with the link of low frequency filtering capacitor C 2 with diode D5; Relay K then is connected with the tie point of inductance L 1 with capacitor C 3 with the link of diode D2.
As mentioned above, just can well realize the utility model.
Claims (4)
1. electric ballast flows the filtering reverse-connection protection circuit with passive pursuing; it is characterized in that: mainly by the passive stream filter circuit (1) that pursues; with this by the LC filter circuit (2) that is connected of stream filter circuit (1), and with passive reverse-connection protection circuit (3) composition that all is connected by stream filter circuit (1) and LC filter circuit (2).
2. electric ballast according to claim 1 flows the filtering reverse-connection protection circuit with passive pursuing; it is characterized in that: described reverse-connection protection circuit (3) is by successively fuse F, diode D1 and the diode D2 of serial connection, and the relay K that is in parallel with diode D2 forms.
3. electric ballast according to claim 2 flows the filtering reverse-connection protection circuit with passive pursuing, it is characterized in that: described passive low frequency filtering capacitor C 1 and the diode D5 that comprises mutual serial connection by stream filter circuit (1), mutually diode D3 and the low frequency filtering capacitor C 2 of serial connection, and be serially connected in diode D4 between the tie point of the tie point of low frequency filtering capacitor C 1 and diode D5 and diode D3 and low frequency filtering capacitor C 2; Described diode D3 all is connected in series with the normally opened contact of relay K mutually with the input of low frequency filtering capacitor C 1, and diode D5 then is connected with the output of low frequency filtering capacitor C 1.
4. by stream filtering reverse-connection protection circuit, it is characterized in that: described LC filter circuit (2) mainly is comprised of inductance L 1 and the capacitor C 3 of mutual serial connection electric ballast according to claim 3 with passive; The other end of described inductance L 1 is connected with the link of capacitor C 1 with diode D3, and the other end of capacitor C 3 then is connected with the link of low frequency filtering capacitor C 2 with diode D5; Relay K then is connected with the tie point of inductance L 1 with capacitor C 3 with the link of diode D2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203960432U CN202799345U (en) | 2012-08-12 | 2012-08-12 | Passive valley-fill filter reverse connection protection circuit used for electronic ballast |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203960432U CN202799345U (en) | 2012-08-12 | 2012-08-12 | Passive valley-fill filter reverse connection protection circuit used for electronic ballast |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202799345U true CN202799345U (en) | 2013-03-13 |
Family
ID=47826509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012203960432U Expired - Fee Related CN202799345U (en) | 2012-08-12 | 2012-08-12 | Passive valley-fill filter reverse connection protection circuit used for electronic ballast |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202799345U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103491694A (en) * | 2013-08-27 | 2014-01-01 | 钟海停 | Module special for fluorescent lamp energy conservation |
-
2012
- 2012-08-12 CN CN2012203960432U patent/CN202799345U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103491694A (en) * | 2013-08-27 | 2014-01-01 | 钟海停 | Module special for fluorescent lamp energy conservation |
| CN103491694B (en) * | 2013-08-27 | 2016-03-09 | 钟海停 | Module special for fluorescent lamp energy conservation |
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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: 20130313 Termination date: 20130812 |