CN203467048U - Digital ballast with surge voltage and electromagnetic interference resistance - Google Patents
Digital ballast with surge voltage and electromagnetic interference resistance Download PDFInfo
- Publication number
- CN203467048U CN203467048U CN201320585567.0U CN201320585567U CN203467048U CN 203467048 U CN203467048 U CN 203467048U CN 201320585567 U CN201320585567 U CN 201320585567U CN 203467048 U CN203467048 U CN 203467048U
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- electromagnetic interference
- circuit
- surge voltage
- digital ballast
- resistance
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Abstract
The utility model discloses digital ballast with surge voltage and electromagnetic interference resistance. A composite circuit is formed by an electromagnetic interference suppression circuit which is formed based on a safety capacitor, a common mode filter and a safety ceramic capacitor and a surge voltage resistance circuit which is formed by a voltage sensitive resistor and a ceramic discharge tube. The common mode and differential mode surge voltage is effectively suppressed, the electromagnetic interference is effectively suppressed, and the safety, the reliability and the electromagnetic compatibility of the electronic ballast are raised.
Description
Technical field
The utility model relates to the circuit structure of digital ballast, relates in particular to the combined circuit structural design of digital ballast anti surge voltage and electromagnetic interference.
Background technology
Ballast is subject to the impact of operational environment, the instantaneous rising of rated operational voltage, and its amplitude reaches several times to tens times of rated operational voltage, causes electric ballast components and parts to damage and loses efficacy and initiation fire.The electromagnetic interference producing in ballast work has a strong impact on other electronic product normal operation.
Along with electric equipment, electronic product develop rapidly, electric equipment need to be used large electric current, and the switch of equipment also has natural calamity thunderbolt, all can produce surge voltage.Increasing high Precision Integrated instrument environment for use requires also more and more higher, and is subject to electromagnetic interference.More and more harsher environment for use increases traditional ballast failure rate, and traditional ballast produces, and electromagnetic interference easily affects other electronic product and equipment works.The digital ballast of a kind of energy anti surge voltage and electromagnetic interference seems particularly important.
Utility model content
The utility model is in order to solve above-mentioned the deficiencies in the prior art, propose the digital ballast of a kind of anti surge voltage and electromagnetic interference, solve and while occurring in surge voltage that the instantaneous rising of electric ballast rated operational voltage or thunderbolt produce and ballast normal operation, to produce other electronic equipment of electromagnetic interference influence.Be intended to improve circuit and the performance of digital ballast, make digital ballast safety and reliability and work.
The technical scheme in the invention for solving the technical problem is:
The digital ballast of anti surge voltage and electromagnetic interference, described digital ballast comprises anti surge voltage circuit, electromagnetic interference circuit and rectification circuit, anti surge voltage circuit feature is: cross-over connection piezo-resistance between described AC power L and N, and described digital ballast the negative pole of output end of rectification circuit respectively with AC power L, N cross-over connection piezo-resistance, between described AC power input ground wire and the negative pole of output end of rectification circuit, be serially connected with the anti surge voltage circuit being composed in series by gas discharge tube and piezo-resistance.Electromagnetic interference circuit feature is to be connected across between L, N by safety electric capacity and common mode inductance parallel connection, and uses three grades; L, N be the ceramic condenser of cross-over connection safety over the ground respectively, and uses secondary, forms electromagnetic interference circuit.
The application implementation of the utility model digital ballast, its outstanding effect is:
The composition of digital ballast input power and above-mentioned digital ballast anti surge voltage circuit and electromagnetic interference circuit, surge voltage and electromagnetic interference effectively suppress; Because inevitable surge voltage enters digital ballast, instantaneous pressure makes piezo-resistance and gas discharge tube conducting, and instantaneous large-current flows to the earth, thereby effectively discharges surge voltage.Digital ballast, because being operated in high-frequency on off state, produces electromagnetic interference, through electromagnetic interference circuit, is effectively absorbed.Above-mentioned combined circuit has improved security reliability and the Electro Magnetic Compatibility of digital ballast.
Accompanying drawing explanation
Fig. 1 is electrical block diagram of the present utility model.
Embodiment
In order more effectively to solve surge voltage and the electromagnetic interference problem of digital ballast, the utility model has adopted a kind of anti surge voltage and electromagnetic interference the electric circuit constitute compound circuit structure, the circuit and the performance that are intended to improve digital ballast, make the work of electric ballast safety and reliability.
As shown in Figure 1, it comprises a protective tube F1, and the piezo-resistance RV1 of cross-over connection between AC power L and N, a rectifier bridge BR1, the negative pole of output end of rectification circuit respectively with piezo-resistance RV2, the RV3 of AC power L, N cross-over connection, a discharge tube G1, a piezo-resistance RV4 who connects with discharge tube.Safety electric capacity X1, X2, X3 and common mode inductance L1, L2, three grades of protection of L3 formation in parallel, cross-over connection Y1, Y2, Y3, Y4 form secondary protection respectively over the ground for L, N.
Because surge voltage has differential mode voltage and common-mode voltage, when differential mode voltage enters digital ballast input L-N, piezo-resistance RV1 now plays the effect of voltage clamping.When this RV1 short-circuit failure, fuse F1 open circuit, disconnects circuit, protects circuit below.When common-mode voltage enters electric ballast input L-PE, N-PE, piezo-resistance RV2, RV3, RV4 and discharge tube G1 conducting, discharging surge current.When piezo-resistance RV2, RV3, RV4 short-circuit failure, discharge tube G1 can be separated with ground by it, can not cause the phenomenon of catching fire.Because electromagnetic interference has differential mode interference and common mode disturbances, the combination of X electric capacity, Y electric capacity and common mode inductance is effectively suppressed.
It is more than the detailed description to feature of the present utility model and execution mode; but above-described content not limits various ways of the present utility model with this; therefore all any simple modification of this example being done based on the technical program and equivalence are replaced; formed technical scheme, within all should being attributed to the scope of protection of this patent request.
Claims (2)
1. the digital ballast of anti surge voltage and electromagnetic interference, described digital ballast comprises anti surge voltage circuit, electromagnetic interference circuit and rectification circuit, anti surge voltage circuit, it is characterized in that: cross-over connection piezo-resistance between described AC power L and N, and described electric ballast the negative pole of output end of rectification circuit respectively with AC power L, N cross-over connection piezo-resistance, between described AC power input ground wire and the negative pole of output end of rectification circuit, be serially connected with the anti surge voltage circuit being composed in series by gas discharge tube and piezo-resistance.
2. the digital ballast of anti surge voltage according to claim 1 and electromagnetic interference, described digital ballast comprises anti surge voltage circuit, electromagnetic interference circuit and rectification circuit, electromagnetic interference circuit, it is characterized in that: described safety electric capacity and common mode inductance parallel connection are connected across between L, N, and use three grades; L, N be the ceramic condenser of cross-over connection safety over the ground respectively, and uses secondary, forms electromagnetic interference circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320585567.0U CN203467048U (en) | 2013-09-18 | 2013-09-18 | Digital ballast with surge voltage and electromagnetic interference resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320585567.0U CN203467048U (en) | 2013-09-18 | 2013-09-18 | Digital ballast with surge voltage and electromagnetic interference resistance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203467048U true CN203467048U (en) | 2014-03-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320585567.0U Withdrawn - After Issue CN203467048U (en) | 2013-09-18 | 2013-09-18 | Digital ballast with surge voltage and electromagnetic interference resistance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203467048U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110635464A (en) * | 2019-10-16 | 2019-12-31 | 李吉晓 | Common-mode lightning protection circuit of LED lighting lamp |
-
2013
- 2013-09-18 CN CN201320585567.0U patent/CN203467048U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110635464A (en) * | 2019-10-16 | 2019-12-31 | 李吉晓 | Common-mode lightning protection circuit of LED lighting lamp |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 215143 No. 16 Chunqiu Road, Pan Yang Industrial Park, Suzhou, Jiangsu, Xiangcheng District Patentee after: At Suzhou power technology Limited by Share Ltd Address before: 215143 No. 16 Chunqiu Road, Pan Yang Industrial Park, Suzhou, Jiangsu, Xiangcheng District Patentee before: Lumlux Lighting (Suzhou) Inc. |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140305 Effective date of abandoning: 20190114 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20140305 Effective date of abandoning: 20190114 |