CN202014091U - Expanded flow current-limiting protection circuit for ecological house - Google Patents
Expanded flow current-limiting protection circuit for ecological house Download PDFInfo
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- CN202014091U CN202014091U CN2010206022834U CN201020602283U CN202014091U CN 202014091 U CN202014091 U CN 202014091U CN 2010206022834 U CN2010206022834 U CN 2010206022834U CN 201020602283 U CN201020602283 U CN 201020602283U CN 202014091 U CN202014091 U CN 202014091U
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Abstract
The utility model relates to an expanded flow current-limiting protection circuit for an ecological house, which is formed by connecting a power-supplying voltage Vin, a main control chip U, two triodes Q1and Q2, three capacitors C1, C2 and C3 and an output end Vout. The expanded flow current-limiting protection circuit for the ecological house has the advantages of fulfilling the expanded flow current-limiting function of the circuit and guaranteeing safety of the circuit.
Description
Technical field
The utility model relates to Circuits System, particularly a kind of expansion current-limiting protection circuit of ecological room.
Background technology
Ecological room design of Controller theory is that imitation meets human body more a good life, rest environment arise at the historic moment technology-imitation natural ecological environments such as application message electronics, the effect that can play beauty treatment, skin care, takes care of health.Be integrated into a control system with these more existing practical techniques and realize that whole system is divided three modules: air-conditioning control module, central controll block, human-computer interaction module, realize mutually by communication modes between three control modules between the information transmission.
But in the prior art, the expansion current-limiting protection circuit system in ecological room is imperfection also.
Summary of the invention
The utility model provides a kind of expansion current-limiting protection circuit of simple and effective ecological room in order to overcome the deficiency of above technology.
The utility model is realized by following measure:
The expansion current-limiting protection circuit in a kind of ecological room of the present utility model is formed by connecting by an input Vin, main control chip U, two triode Q1, Q2, three capacitor C 1, C2 and C3 and an output end vo ut:
No. 1 port of main control chip U connects and draws resistance R 2, input Vin, and No. 1 port of main control chip U links to each other with the base stage of triode Q2, and the emitter of triode Q2 links to each other with the base stage of triode Q1, is connected to input Vin behind the emitter series connection R1 of triode Q2,
No. 1 port and No. 2 port cross-over connection capacitor C 1 of main control chip U, the positive pole of capacitor C 1 connects main control chip U1 port,
No. 2 ports of main control chip U connect the collector electrode of triode Q1,
Cross-over connection capacitor C 2 between No. 2 ports of main control chip U and No. 3 ports, the positive pole of capacitor C 2 connects No. 3 ports of main control chip U,
No. 2 ports and No. 3 port cross-over connection capacitor C 3 of main control chip U, No. 3 ports of main control chip U link to each other with the collector electrode of triode Q2, and link to each other with output end vo ut,
No. 2 port ground connection of main control chip U.
The beneficial effects of the utility model are: realize the expansion current-limiting function of circuit, guarantee the fail safe of circuit.
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 preferred embodiment of the present utility model and conjunction with figs. describes 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 drive circuit schematic diagram of expansion current-limiting protection circuit of the present utility model.
Embodiment
The drive circuit schematic diagram of the expansion current-limiting protection circuit of present embodiment is as shown in drawings:
The expansion current-limiting protection circuit in a kind of ecological room of the present utility model is formed by connecting by an input Vin, main control chip U, two triode Q1, Q2, three capacitor C 1, C2 and C3 and an output end vo ut:
No. 1 port of main control chip U connects and draws resistance R 2, input Vin, and No. 1 port of main control chip U links to each other with the base stage of triode Q2, and the emitter of triode Q2 links to each other with the base stage of triode Q1, is connected to input Vin behind the emitter series connection R1 of triode Q2,
No. 1 port and No. 2 port cross-over connection capacitor C 1 of main control chip U, the positive pole of capacitor C 1 connects main control chip U1 port,
No. 2 ports of main control chip U connect the collector electrode of triode Q1,
Cross-over connection capacitor C 2 between No. 2 ports of main control chip U and No. 3 ports, the positive pole of capacitor C 2 connects No. 3 ports of main control chip U,
No. 2 ports and No. 3 port cross-over connection capacitor C 3 of main control chip U, No. 3 ports of main control chip U link to each other with the collector electrode of triode Q2, and link to each other with output end vo ut,
No. 2 port ground connection of main control chip U.
The physical circuit of expansion current-limiting protection circuit of the present utility model is described below:
Input Vin input voltage is 12V, if main control chip U can be 3.3V or 5V voltage stabilizing sheet, resistance R 2 is to be used for detecting electric current whether to need to expand stream, and when the voltage of resistance R 2 during less than 0.7V, triode Q1, Q2 are in cut-off state, output does not expand stream, when the voltage of resistance R 2 during greater than 0.7V, triode Q2 begins conducting, is in the linear amplification district, the part electric current can be by triode Q2 output, the function that realizes expanding stream.When electric current arrived limiting current greatly, triode Q1 conducting provided the passage of release, realizes the purpose of output current limliting.
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 (1)
1. the expansion current-limiting protection circuit in an ecological room is characterized in that, is formed by connecting by an input Vin, main control chip U, two triode Q1, Q2, three capacitor C 1, C2 and C3 and an output end vo ut:
No. 1 port of main control chip U connects and draws resistance R 2, input Vin, and No. 1 port of main control chip U links to each other with the base stage of triode Q2, and the emitter of triode Q2 links to each other with the base stage of triode Q1, is connected to input Vin behind the emitter series connection R1 of triode Q2,
No. 1 port and No. 2 port cross-over connection capacitor C 1 of main control chip U, the positive pole of capacitor C 1 connects main control chip U1 port,
No. 2 ports of main control chip U connect the collector electrode of triode Q1,
Cross-over connection capacitor C 2 between No. 2 ports of main control chip U and No. 3 ports, the positive pole of capacitor C 2 connects No. 3 ports of main control chip U,
No. 2 ports and No. 3 port cross-over connection capacitor C 3 of main control chip U, No. 3 ports of main control chip U link to each other with the collector electrode of triode Q2, and link to each other with output end vo ut,
No. 2 port ground connection of main control chip U.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206022834U CN202014091U (en) | 2010-11-11 | 2010-11-11 | Expanded flow current-limiting protection circuit for ecological house |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206022834U CN202014091U (en) | 2010-11-11 | 2010-11-11 | Expanded flow current-limiting protection circuit for ecological house |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202014091U true CN202014091U (en) | 2011-10-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206022834U Expired - Fee Related CN202014091U (en) | 2010-11-11 | 2010-11-11 | Expanded flow current-limiting protection circuit for ecological house |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202014091U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102025139A (en) * | 2010-11-11 | 2011-04-20 | 苏州合欣美电子科技有限公司 | Current expanding and limiting protection circuit of ecological house |
-
2010
- 2010-11-11 CN CN2010206022834U patent/CN202014091U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102025139A (en) * | 2010-11-11 | 2011-04-20 | 苏州合欣美电子科技有限公司 | Current expanding and limiting protection circuit of ecological house |
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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: 20111019 Termination date: 20121111 |