CN101969187A - Protective circuit for direct-current motor - Google Patents
Protective circuit for direct-current motor Download PDFInfo
- Publication number
- CN101969187A CN101969187A CN2010105306903A CN201010530690A CN101969187A CN 101969187 A CN101969187 A CN 101969187A CN 2010105306903 A CN2010105306903 A CN 2010105306903A CN 201010530690 A CN201010530690 A CN 201010530690A CN 101969187 A CN101969187 A CN 101969187A
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- direct current
- current machine
- relay
- triode
- protective circuit
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Abstract
The invention discloses a protective circuit for a direct-current motor, which comprises a direct-current motor M1, wherein one end of the direct-current motor M1 is connected to one end of an output branch circuit of a relay RY1; the operating voltage of the direct-current motor is connected to a first terminal of the output branch circuit of the relay RY1; the operating voltage of the relay is connected to one end of the output branch circuit of the relay RY1, and a collector of a triode Q1 is connected to the other end of the output branch circuit of the relay RY1; an emitter of the triode Q1 is grounded, and a base of the triode Q1 is connected to an input/output interface I/O of a control chip through a resistor R1; and a second terminal of the direct-current motor M1 is connected to the ground through two diodes D2 and D3 which are connected in series. The protective circuit for the direct-current motor can protect the direct-current motor effectively.
Description
Technical field
The present invention relates to a kind of application circuit, be 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.
Summary of the invention
For overcoming deficiency of the prior art, the object of the present invention 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 present invention 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 invention 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 present invention has the following advantages:
By above The Application of Technology, direct current machine protective circuit of the present invention 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 solution of the present invention, for can clearer understanding technological means of the present invention, and can be implemented according to the content of specification, below with preferred embodiment of the present invention and conjunction with figs. describe in detail as after.The specific embodiment of the present invention 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 invention.
Embodiment
Below in conjunction with drawings and Examples technology implementation process of the present invention 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 invention and enforcement according to this for technical conceive of the present invention and characteristics being described, its objective is, can not limit protection scope of the present invention with this.The variation or the modification of every equivalence that the essence of content has been done according to the present invention all should be encompassed in protection scope of the present invention.
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 |
|---|---|---|---|
| CN2010105306903A CN101969187A (en) | 2010-11-03 | 2010-11-03 | Protective circuit for direct-current motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105306903A CN101969187A (en) | 2010-11-03 | 2010-11-03 | Protective circuit for direct-current motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101969187A true CN101969187A (en) | 2011-02-09 |
Family
ID=43548302
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105306903A Pending CN101969187A (en) | 2010-11-03 | 2010-11-03 | Protective circuit for direct-current motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101969187A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101334646A (en) * | 2008-07-28 | 2008-12-31 | 谭启仁 | Sightseeing cable car emergent automatic door control device possessing speed governing and mutual locking function |
| CN101704341A (en) * | 2009-11-13 | 2010-05-12 | 重庆长安汽车股份有限公司 | Combination meter for cars |
| CN201877803U (en) * | 2010-11-03 | 2011-06-22 | 苏州合欣美电子科技有限公司 | Direct-current motor protection circuit |
-
2010
- 2010-11-03 CN CN2010105306903A patent/CN101969187A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101334646A (en) * | 2008-07-28 | 2008-12-31 | 谭启仁 | Sightseeing cable car emergent automatic door control device possessing speed governing and mutual locking function |
| CN101704341A (en) * | 2009-11-13 | 2010-05-12 | 重庆长安汽车股份有限公司 | Combination meter for cars |
| CN201877803U (en) * | 2010-11-03 | 2011-06-22 | 苏州合欣美电子科技有限公司 | Direct-current motor protection circuit |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110209 |