CN203851014U - Switching-on driving circuit - Google Patents
Switching-on driving circuit Download PDFInfo
- Publication number
- CN203851014U CN203851014U CN201420145762.6U CN201420145762U CN203851014U CN 203851014 U CN203851014 U CN 203851014U CN 201420145762 U CN201420145762 U CN 201420145762U CN 203851014 U CN203851014 U CN 203851014U
- Authority
- CN
- China
- Prior art keywords
- optical coupler
- switching
- utility
- model
- driving circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a switching-on driving circuit which comprises an optical coupler. The optical coupler is provided with two input ends and two output ends. A Zener diode, a resistor and a capacitor are connected in parallel between the two input ends of the optical coupler, wherein one output end is grounded. The resistor and the capacitor perform bypass filtering. The switching-on driving circuit provided by the utility model can ensure higher stability and higher reliability of a switching-on system.
Description
Technical field
The utility model relates to a kind of opening into drive circuit, is mainly used in ring main unit.
Background technology
Existing ring main unit, when opening into driving, can be subject to the interference such as input signal, and built-in system is exerted an influence, and makes to open into system works unstable.
Utility model content
The problem that the utility model is easily disturbed into system in order to solve opening of current ring main unit, provide a kind of opens into drive circuit for this reason, comprise an optical coupler, described optical coupler has two inputs and two outputs, between two inputs, be parallel with a voltage stabilizing didoe, a resistance and an electric capacity, one of them output head grounding.Wherein, described optical coupling isolation circuit is for the signal of Isolation input end and output, and described voltage stabilizing didoe is used for preventing the too high optocoupler that punctures of reverse voltage, and described resistance and electric capacity have formed bypass filtering, prevent the interference of input signal.
The beneficial effects of the utility model are:
The utility model can make to open into system more stable and reliable.
Accompanying drawing explanation
The utility model will illustrate by example and with reference to the mode of accompanying drawing, wherein:
Fig. 1 is schematic diagram of the present utility model.
Embodiment
Disclosed all features in this specification, or the step in disclosed all methods or process, except mutually exclusive feature and/or step, all can combine by any way.
Disclosed arbitrary feature in this specification, unless narration especially all can be replaced by other equivalences or the alternative features with similar object.That is,, unless narration especially, each feature is an example in a series of equivalences or similar characteristics.
Opening into drive circuit as shown in Figure 1, comprise an optical coupler U1, described optical coupler U1 is mainly comprised of light-emitting diode and triode, the positive pole 1 of light-emitting diode and negative pole 2 form two inputs of optical coupler U1, the emitter-base bandgap grading 3 of triode and collector electrode 4 form two outputs of optical coupler U1, between described two inputs, be parallel with a voltage stabilizing didoe D1, a resistance R 1 and a capacitor C 1, emitter-base bandgap grading 3 ground connection of output.When two inputs 1 and 2 of optical coupler U1 apply forward voltage, optocoupler conducting, the collector electrode 4 of output is output as 0; When two inputs 1 and 2 of optical coupler U1 apply reverse voltage, not conducting of optocoupler, port 4 is output as 1.Wherein, described optical coupler is for the signal of Isolation input end and output, and described voltage stabilizing didoe is used for preventing the too high optocoupler that punctures of reverse voltage, and described resistance and electric capacity have formed bypass filtering, prevent the interference of input signal.The utility model can make to open into system more stable and reliable.
The utility model is not limited to aforesaid embodiment.The utility model expands to any new feature or any new combination disclosing in this manual, and the arbitrary new method disclosing or step or any new combination of process.
Claims (1)
1. open into drive circuit for one kind, comprise an optical coupler (U1), described optical coupler (U1) has two inputs and two outputs, it is characterized in that: between two inputs of described optical coupler (U1), be parallel with a voltage stabilizing didoe (D1), a resistance (R1) and an electric capacity (C1), one of them output head grounding, described resistance (R1) and electric capacity (C1) form bypass filtering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420145762.6U CN203851014U (en) | 2014-03-28 | 2014-03-28 | Switching-on driving circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420145762.6U CN203851014U (en) | 2014-03-28 | 2014-03-28 | Switching-on driving circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203851014U true CN203851014U (en) | 2014-09-24 |
Family
ID=51563984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420145762.6U Expired - Fee Related CN203851014U (en) | 2014-03-28 | 2014-03-28 | Switching-on driving circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203851014U (en) |
-
2014
- 2014-03-28 CN CN201420145762.6U patent/CN203851014U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140924 Termination date: 20190328 |