CN201877803U - Direct-current motor protection circuit - Google Patents
Direct-current motor protection circuit Download PDFInfo
- Publication number
- CN201877803U CN201877803U CN2010205900973U CN201020590097U CN201877803U CN 201877803 U CN201877803 U CN 201877803U CN 2010205900973 U CN2010205900973 U CN 2010205900973U CN 201020590097 U CN201020590097 U CN 201020590097U CN 201877803 U CN201877803 U CN 201877803U
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- CN
- China
- Prior art keywords
- direct current
- current machine
- relay
- triode
- current motor
- 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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- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model discloses a direct-current motor protection circuit, which comprises a direct current motor M1. One end of the direct current motor M1 is connected to one end of an output branch of a relay RY1, a first connection end of the output branch of the relay RY1 is connected with operating voltage of the direct current motor, one end of an input branch of the relay RY1 is connected with operating voltage of the relay, the other end of the input branch of the relay is connected with a collector electrode of the triode Q1, an emitter electrode of the triode Q1 is grounded, a base electrode of the triode Q1 is connected to an I/O (input/output) port of a control chip through a resistor R1, and a second connection end of the direct current motor M1 is grounded through the diode D2 and the diode D3 connected in series. The direct-current motor protection circuit is capable of protecting the direct-current motor effectively.
Description
Technical field
The utility model relates to a kind of application circuit, is specifically related to a kind of direct current machine protective circuit.
Background technology
Because direct current machine easy to use, to use in multiple workplace to obtain, therefore relevant work protective circuit emerges in an endless stream, but the general more complicated of circuit structure, lacks a kind of protective circuit of not only simply but also effectively having worked always.
The utility model content
For overcoming deficiency of the prior art, the purpose of this utility model is to provide a kind of direct current machine protective circuit that can effectively protect direct current machine.
In order to solve the problems of the technologies described above, realize above-mentioned purpose, the utility model has adopted following technical scheme:
A kind of direct current machine protective circuit, comprise a direct current motor M 1, the end of described direct current machine M1 is connected on the end of output branch road of a relay R Y1, first terminals of the output branch road of described relay R Y1 are connected to the direct current machine operating voltage, one relay termination operating voltage of the input branch road of described relay R Y1, the other end connects the collector electrode of triode Q1, the grounded emitter of described triode Q1, the base stage of described triode Q1 are connected on the input/output port I/O of a control chip by a resistance R 1; Second terminals of described direct current machine M1 are by two diode in series D2, D3 ground connection.
Further, second terminals of described direct current machine M1 also connect the base stage of triode Q2 by a resistance R 3, the grounded emitter of described triode Q2, the collector electrode of described triode Q2 is connected with a LED 1 by resistance R 2, and described LED 1 connects diode operation voltage.
Further, cross-over connection one diode D1 on the input branch road of described relay R Y1.
Further, cross-over connection one resistance R 4 between the base stage of described triode Q2 and the emitter.
The course of work of direct current machine protective circuit of the present utility model is as follows:
1, under the normal operation: the input/output port I/O output signal of control chip makes triode Q1 conducting through resistance R 1, thereby makes relay R Y1 make the relay adhesive.The direct current machine operating voltage is through two-way, and the first via: direct current machine M1, diode D2, D3 conducting over the ground, direct current machine begins operate as normal.The second the tunnel: diode Q2 conducting, LED 1 is lighted.
2, report to the police: when direct current machine M1 cisco unity malfunction, be equivalent to the direct current machine operating voltage is disconnected, this moment, the base stage of diode Q2 became electronegative potential by high potential, and diode Q2 ends, and LED 1 extinguishes.
The utlity model has following advantage:
By above The Application of Technology, direct current machine protective circuit of the present utility model can effectively be protected direct current machine, and by the real-time alert of LED 1.
Above-mentioned explanation only is the general introduction of technical solutions of the utility model, for can clearer understanding technological means of the present utility model, and can be implemented according to the content of specification, below with preferred embodiment of the present utility model and conjunction with figs. describe in detail as after.Embodiment of the present utility model is provided in detail by following examples and accompanying drawing thereof.
Description of drawings
Fig. 1 is the circuit theory diagrams of direct current machine protective circuit of the present utility model.
Embodiment
Below in conjunction with drawings and Examples technology implementation process of the present utility model is described further.
Referring to shown in Figure 1, a kind of direct current machine protective circuit, comprise a direct current motor M 1, the end of described direct current machine M1 is connected on the end of output branch road of a relay R Y1, first terminals of the output branch road of described relay R Y1 are connected to the direct current machine operating voltage, one relay termination operating voltage of the input branch road of described relay R Y1, the other end connects the collector electrode of triode Q1, the grounded emitter of described triode Q1, the base stage of described triode Q1 are connected on the input/output port I/O of a control chip by a resistance R 1; Second terminals of described direct current machine M1 are by two diode in series D2, D3 ground connection.
Further, second terminals of described direct current machine M1 also connect the base stage of triode Q2 by a resistance R 3, the grounded emitter of described triode Q2, the collector electrode of described triode Q2 is connected with a LED 1 by resistance R 2, and described LED 1 connects diode operation voltage.
Further, cross-over connection one diode D1 on the input branch road of described relay R Y1.
Further, cross-over connection one resistance R 4 between the base stage of described triode Q2 and the emitter.
The foregoing description just is to allow the one of ordinary skilled in the art can understand content of the present utility model and enforcement according to this for technical conceive of the present utility model and characteristics being described, its objective is, can not limit protection range of the present utility model with this.The variation or the modification of every equivalence of having done according to the essence of the utility model content all should be encompassed in the protection range of the present utility model.
Claims (4)
1. direct current machine protective circuit, comprise a direct current motor M 1, it is characterized in that: the end of described direct current machine M1 is connected on the end of output branch road of a relay R Y1, first terminals of the output branch road of described relay R Y1 are connected to the direct current machine operating voltage, one relay termination operating voltage of the input branch road of described relay R Y1, the other end connects the collector electrode of triode Q1, the grounded emitter of described triode Q1, the base stage of described triode Q1 are connected on the input/output port I/O of a control chip by a resistance R 1; Second terminals of described direct current machine M1 are by two diode in series D2, D3 ground connection.
2. direct current machine protective circuit according to claim 1; it is characterized in that: second terminals of described direct current machine M1 also connect the base stage of triode Q2 by a resistance R 3; the grounded emitter of described triode Q2; the collector electrode of described triode Q2 is connected with a LED 1 by resistance R 2, and described LED 1 connects diode operation voltage.
3. direct current machine protective circuit according to claim 1 is characterized in that: cross-over connection one diode D1 on the input branch road of described relay R Y1.
4. direct current machine protective circuit according to claim 2 is characterized in that: cross-over connection one resistance R 4 between the base stage of described triode Q2 and the emitter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205900973U CN201877803U (en) | 2010-11-03 | 2010-11-03 | Direct-current motor protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205900973U CN201877803U (en) | 2010-11-03 | 2010-11-03 | Direct-current motor protection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201877803U true CN201877803U (en) | 2011-06-22 |
Family
ID=44165712
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205900973U Expired - Fee Related CN201877803U (en) | 2010-11-03 | 2010-11-03 | Direct-current motor protection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201877803U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101969187A (en) * | 2010-11-03 | 2011-02-09 | 苏州合欣美电子科技有限公司 | Protective circuit for direct-current motor |
-
2010
- 2010-11-03 CN CN2010205900973U patent/CN201877803U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101969187A (en) * | 2010-11-03 | 2011-02-09 | 苏州合欣美电子科技有限公司 | Protective circuit for direct-current motor |
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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: 20110622 Termination date: 20111103 |