CN205070393U - Industrial equipment overvoltage protection control circuit - Google Patents
Industrial equipment overvoltage protection control circuit Download PDFInfo
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- CN205070393U CN205070393U CN201520848067.0U CN201520848067U CN205070393U CN 205070393 U CN205070393 U CN 205070393U CN 201520848067 U CN201520848067 U CN 201520848067U CN 205070393 U CN205070393 U CN 205070393U
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- transformer
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Abstract
The utility model discloses an industrial equipment overvoltage protection control circuit, including transformer T, diode D1, resistance R1, electric capacity C1, relay J and triode VT1, transformer T coil L1 connects the alternating current power supply AC both ends respectively in both ends, it is anodal that diode D5 is connected to transformer T coil L2 one end, light emitting diode was anodal in electric capacity C1 and opto -coupler U1 were connected respectively to diode D5 negative pole, the electric capacity C1 other end and the transformer T coil L2 other end are connected respectively to the emitting diode negative pole in the opto -coupler U1, relay J coil is connected respectively to the phototriode collecting electrode in the opto -coupler U1, the emitting diode D6 negative pole, electric capacity C2, diode D1 negative pole and diode D2 negative pole, diode D4 negative pole and transformer T coil L3 are connected respectively to diode D1 positive pole. The utility model discloses industrial equipment overvoltage protection control circuit adopts the opto -coupler to carry out excessive pressure control, and circuit structure is very simple, and is small, with low costs, especially adapted using widely.
Description
Technical field
The utility model relates to a kind of control circuit, specifically a kind of industrial equipment overvoltage protection control circuits.
Background technology
Along with popularizing of present electric equipment, bring revolutionary change to industrial and agricultural production, Defence business, science and technology, accelerate the development of society, people have stepped into Electrification Age, also make the quality of life of people obtain significantly to improve, also more and more be unable to do without these electric equipments.Along with the development of science and technology, the precision of electric equipment also improves gradually, there occurs earth-shaking change, but how to protect the interference not being subject to the external world of these electric equipments, has become the subject matter that current development in science and technology is paid close attention to.The electrical network of current China is popularized, and huge network system gives us many convenience.But along with the user of access electrical network increases, and the variation of consumer electronics, also result in the instability of line voltage, voltage fluctuated, also become the principal element damaging electric equipment.How to protect power consumption equipment when change in voltage is larger, the direction having become people to study now.Existing a lot of overvoltage crowbar complex structure, cost is high.
Utility model content
The purpose of this utility model is to provide a kind of industrial equipment overvoltage protection control circuits, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme:
A kind of industrial equipment overvoltage protection control circuits, comprise transformer T, diode D1, resistance R1, electric capacity C1, relay J and triode VT1, described transformer T coil L1 two ends connect AC power AC two ends respectively, transformer T coil L2 one end connects diode D5 positive pole, diode D5 negative pole connects Light-Emitting Diode positive pole in electric capacity C1 and optocoupler U1 respectively, in optocoupler U1, light-emitting diode negative pole connects the electric capacity C1 other end and the transformer T coil L2 other end respectively, in optocoupler U1, phototriode collector electrode connects relay J coil respectively, light-emitting diode D6 negative pole, electric capacity C2, diode D1 negative pole and diode D2 negative pole, diode D1 positive pole connects diode D4 negative pole and transformer T coil L3 respectively, the transformer T coil L3 other end connects diode D2 positive pole and diode D3 negative pole respectively, diode D3 positive pole connects diode D4 positive pole respectively, resistance R3, resistance R2 and triode VT1 emitter, triode VT1 collector electrode connects the relay J coil other end and light-emitting diode D6 positive pole respectively, triode VT1 base stage is contact resistance R1 respectively, the resistance R2 other end and electric capacity C3, the electric capacity C3 other end is the contact resistance R3 other end respectively, phototriode emitter in the resistance R1 other end and optocoupler U1.
As the utility model further scheme: described optocoupler U1 adopts 4N25.
Compared with prior art, the beneficial effects of the utility model are: the utility model industrial equipment overvoltage protection control circuits adopts optocoupler to carry out pressure-controlled, and circuit structure is very simple, and volume is little, and cost is low, is applicable to very much promoting the use of.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of industrial equipment overvoltage protection control circuits.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1, in the utility model embodiment, a kind of industrial equipment overvoltage protection control circuits, comprise transformer T, diode D1, resistance R1, electric capacity C1, relay J and triode VT1, transformer T coil L1 two ends connect AC power AC two ends respectively, transformer T coil L2 one end connects diode D5 positive pole, diode D5 negative pole connects Light-Emitting Diode positive pole in electric capacity C1 and optocoupler U1 respectively, in optocoupler U1, light-emitting diode negative pole connects the electric capacity C1 other end and the transformer T coil L2 other end respectively, in optocoupler U1, phototriode collector electrode connects relay J coil respectively, light-emitting diode D6 negative pole, electric capacity C2, diode D1 negative pole and diode D2 negative pole, diode D1 positive pole connects diode D4 negative pole and transformer T coil L3 respectively, the transformer T coil L3 other end connects diode D2 positive pole and diode D3 negative pole respectively, diode D3 positive pole connects diode D4 positive pole respectively, resistance R3, resistance R2 and triode VT1 emitter, triode VT1 collector electrode connects the relay J coil other end and light-emitting diode D6 positive pole respectively, triode VT1 base stage is contact resistance R1 respectively, the resistance R2 other end and electric capacity C3, the electric capacity C3 other end is the contact resistance R3 other end respectively, phototriode emitter in the resistance R1 other end and optocoupler U1.
Optocoupler U1 adopts 4N25.
Operation principle of the present utility model is: refer to Fig. 1, when voltage is normal, optocoupler U1 almost no-output, VT1 is by reverse-biased and end, when certain reason makes circuit input ac power AC voltage raise (neutral line break or zero line misconnection become phase line etc.), the sample circuit secondary voltage be made up of diode D5 and electric capacity C1 increases, and optocoupler U1 meets condition of work.Optocoupler U1 output current increases, and VT1 bias voltage is raised and saturation conduction, actuator's relay J action adhesive, cuts off external power source and then reaches the object of protective device.If Failure elimination, voltage is thereupon normal, and this device is deactivated immediately, and restore circuit is powered.
To those skilled in the art, obvious the utility model is not limited to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit of the present utility model or essential characteristic, can realize the utility model in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present utility model is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in the utility model.Any Reference numeral in claim should be considered as the claim involved by limiting.
In addition, be to be understood that, although this specification is described according to execution mode, but not each execution mode only comprises an independently technical scheme, this narrating mode of specification is only for clarity sake, those skilled in the art should by specification integrally, and the technical scheme in each embodiment also through appropriately combined, can form other execution modes that it will be appreciated by those skilled in the art that.
Claims (2)
1. an industrial equipment overvoltage protection control circuits, comprise transformer T, diode D1, resistance R1, electric capacity C1, relay J and triode VT1, it is characterized in that, described transformer T coil L1 two ends connect AC power AC two ends respectively, transformer T coil L2 one end connects diode D5 positive pole, diode D5 negative pole connects Light-Emitting Diode positive pole in electric capacity C1 and optocoupler U1 respectively, in optocoupler U1, light-emitting diode negative pole connects the electric capacity C1 other end and the transformer T coil L2 other end respectively, in optocoupler U1, phototriode collector electrode connects relay J coil respectively, light-emitting diode D6 negative pole, electric capacity C2, diode D1 negative pole and diode D2 negative pole, diode D1 positive pole connects diode D4 negative pole and transformer T coil L3 respectively, the transformer T coil L3 other end connects diode D2 positive pole and diode D3 negative pole respectively, diode D3 positive pole connects diode D4 positive pole respectively, resistance R3, resistance R2 and triode VT1 emitter, triode VT1 collector electrode connects the relay J coil other end and light-emitting diode D6 positive pole respectively, triode VT1 base stage is contact resistance R1 respectively, the resistance R2 other end and electric capacity C3, the electric capacity C3 other end is the contact resistance R3 other end respectively, phototriode emitter in the resistance R1 other end and optocoupler U1.
2. industrial equipment overvoltage protection control circuits according to claim 1, is characterized in that, described optocoupler U1 adopts 4N25.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520848067.0U CN205070393U (en) | 2015-10-28 | 2015-10-28 | Industrial equipment overvoltage protection control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520848067.0U CN205070393U (en) | 2015-10-28 | 2015-10-28 | Industrial equipment overvoltage protection control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205070393U true CN205070393U (en) | 2016-03-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520848067.0U Expired - Fee Related CN205070393U (en) | 2015-10-28 | 2015-10-28 | Industrial equipment overvoltage protection control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205070393U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106211530A (en) * | 2016-09-07 | 2016-12-07 | 中国科学院近代物理研究所 | A kind of overvoltage control circuit for X-radiation instrument and high tension generator |
| CN107069655A (en) * | 2017-06-06 | 2017-08-18 | 吉林省中赢高科技有限公司 | A kind of voltage protection circuit |
-
2015
- 2015-10-28 CN CN201520848067.0U patent/CN205070393U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106211530A (en) * | 2016-09-07 | 2016-12-07 | 中国科学院近代物理研究所 | A kind of overvoltage control circuit for X-radiation instrument and high tension generator |
| CN107069655A (en) * | 2017-06-06 | 2017-08-18 | 吉林省中赢高科技有限公司 | A kind of voltage protection circuit |
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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 |
Granted publication date: 20160302 Termination date: 20161028 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |