CN206135384U - Short-circuit protector for DC power supply - Google Patents
Short-circuit protector for DC power supply Download PDFInfo
- Publication number
- CN206135384U CN206135384U CN201620928073.1U CN201620928073U CN206135384U CN 206135384 U CN206135384 U CN 206135384U CN 201620928073 U CN201620928073 U CN 201620928073U CN 206135384 U CN206135384 U CN 206135384U
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- Prior art keywords
- resistance
- diode
- audion
- short
- circuit
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- Expired - Fee Related
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- 230000001012 protector Effects 0.000 title claims abstract description 11
- 230000005611 electricity Effects 0.000 claims 1
- 239000003990 capacitor Substances 0.000 abstract 1
- 238000001514 detection method Methods 0.000 abstract 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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Abstract
The utility model discloses a short-circuit protector of a direct-current power supply, which comprises a triode switch module, a light indicating circuit and an alarm module; the triode switch module comprises a triode V1 and a triode V2, the light indicating circuit comprises a resistor R2, a resistor R7, a diode D1 and a diode D2, and the short-circuit alarming module comprises a triode V3, a resistor R3, a capacitor C1 and a resistor R4. The utility model discloses DC power supply short-circuit protection ware utilizes two triodes to constitute short-circuit detection switch, monitors the short circuit condition of load, and the automatic switching that carries out the power supply line when meetting the short circuit condition can send chimes of doom and light indication simultaneously, consequently has with low costs, convenient to use and the manifold advantage of function.
Description
Technical field
This utility model is related to a kind of short-circuit protection circuit, specifically a kind of DC source short-circuit protector.
Background technology
With the continuous improvement of people's living standard, electronic equipment has become a requisite part in life, especially
Which is that the life that gives people of various household electrical appliance, work bring great convenience, and this kind of electronic installation has to the supply of electric energy
There is higher requirement.Especially to protection situations such as short circuit, once load is short-circuited, then electrical equipment may be burnt,
Cause larger economic loss.
Utility model content
The purpose of this utility model is to provide a kind of simple structure, DC source short-circuit protector easy to use, with
Propose in solving the problems, such as above-mentioned background technology.
For achieving the above object, this utility model provides following technical scheme：
A kind of DC source short-circuit protector, including triode switch module, light indicating circuit and alarm module；It is described
Triode switch module includes audion V1 and audion V2, light indicating circuit include resistance R2, resistance R7, diode D1 and
Diode D2, short-circuit alarming module include audion V3, resistance R3, electric capacity C1 and resistance R4；
The colelctor electrode of one end connecting triode V2 of the resistance R1, base stage connection the resistance R5, resistance R1 of audion V2
Other end connecting triode V1 base stage, audion V1 emitter stage connection resistance R2 and power supply VCC, the other end of resistance R2
The anode of connection diode D1, the colelctor electrode connection resistance R5 of audion V1, resistance R6, resistance R7, resistance R3, load X, two poles
The anode of the negative electrode and diode D3 of pipe D1, the base stage of the other end connecting triode V2 of resistance R5, the emitter stage of audion V2
The other end of connection resistance R6, the negative electrode of diode D2, the other end of load X, loudspeaker B and electric capacity C1, the anode of diode D2
The other end of connection resistance R7, the other end of resistance R2 connect the anode of diode D1, the negative electrode connection resistance R4 of diode D3
With the other end of electric capacity C1, the base stage of the other end connecting triode V3 of resistance R3, the emitter stage connection resistance R4 of audion V3
The other end, the colelctor electrode of audion V3 connects the other end of loudspeaker B.
As preferred version of the present utility model：The diode D1 and diode D2 are light emitting diode.
Compared with prior art, the beneficial effects of the utility model are：This utility model DC source short-circuit protector profit
Short-circuit detecting switch is constituted with two audions, the short-circuit conditions to loading are monitored, are carried out when running into short-circuit conditions automatically
The switching of supply line, while chimes of doom and lamplight pointing can be sent, therefore with low cost, easy to use and vdiverse in function
Advantage.
Description of the drawings
Circuit diagrams of the Fig. 1 for DC source short-circuit protector.
Specific embodiment
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only this utility model a part of embodiment, rather than whole
Embodiment.Based on the embodiment in this utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment for being obtained, belongs to the scope of this utility model protection.
Refer to Fig. 1, a kind of DC source short-circuit protector, including triode switch module, light indicating circuit and report
Alert module；The triode switch module includes audion V1 and audion V2, and light indicating circuit includes resistance R2, resistance
R7, diode D1 and diode D2, short-circuit alarming module include audion V3, resistance R3, electric capacity C1 and resistance R4；
The colelctor electrode of one end connecting triode V2 of the resistance R1, base stage connection the resistance R5, resistance R1 of audion V2
Other end connecting triode V1 base stage, audion V1 emitter stage connection resistance R2 and power supply VCC, the other end of resistance R2
The anode of connection diode D1, the colelctor electrode connection resistance R5 of audion V1, resistance R6, resistance R7, resistance R3, load X, two poles
The anode of the negative electrode and diode D3 of pipe D1, the base stage of the other end connecting triode V2 of resistance R5, the emitter stage of audion V2
The other end of connection resistance R6, the negative electrode of diode D2, the other end of load X, loudspeaker B and electric capacity C1, the anode of diode D2
The other end of connection resistance R7, the other end of resistance R2 connect the anode of diode D1, the negative electrode connection resistance R4 of diode D3
With the other end of electric capacity C1, the base stage of the other end connecting triode V3 of resistance R3, the emitter stage connection resistance R4 of audion V3
The other end, the colelctor electrode of audion V3 connects the other end of loudspeaker B.
Diode D1 and diode D2 are light emitting diode.
Operation principle of the present utility model is：When VCC is normal, audion V2 Jing resistance R2, D1 and R3 conducting, after conducting
Therefore audion V1 also turns on, and VCC direct current outputs can be just added on load X, and at this moment light emitting diode D2 lights, and light-emitting diodes
Pipe D1 is in same current potential because of two ends, therefore still in OFF state.
The failure if load X is short-circuited, audion V2 are ended due to base earth. thus V1 is also switched off.In load X
During short circuit, D2 extinguishes, and D1 lights, and now electric capacity C1 is charged through diode D3, and audion V3 is due to base voltage
High and end, loudspeaker B does not work, and when loading F and occurring short-circuit, audion V2 is ended due to base earth. thus V1 also cuts
Only, now voltage accesses load after resistance R2, diode D1, reaches the purpose of short-circuit protection.During short circuit, D2 puts out
Go out, D1 lights, as the base voltage of audion V3 disappears, electric capacity C1 is discharged by audion V3, then V4 conductings, and loudspeaker B sends out
Go out chimes of doom, as short-circuit alarming sound.
Claims (2)
1. a kind of DC source short-circuit protector, including triode switch module, light indicating circuit and alarm module；Its feature
Be that the triode switch module includes audion V1 and audion V2, light indicating circuit include resistance R2, resistance R7,
Diode D1 and diode D2, short-circuit alarming module include audion V3, resistance R3, electric capacity C1 and resistance R4；
The colelctor electrode of one end connecting triode V2 of the resistance R1, the base stage connection resistance R5 of audion V2, resistance R1's is another
The base stage of one end connecting triode V1, the emitter stage connection resistance R2 and power supply VCC of audion V1, the other end connection of resistance R2
The anode of diode D1, the colelctor electrode connection resistance R5 of audion V1, resistance R6, resistance R7, resistance R3, load X, diode D1
Negative electrode and diode D3 anode, the base stage of the other end connecting triode V2 of resistance R5, audion V2 emitter stage connection
The other end of resistance R6, the negative electrode of diode D2, the other end of load X, loudspeaker B and electric capacity C1, the anode connection of diode D2
The other end of resistance R7, the other end of resistance R2 connect the anode of diode D1, the negative electrode connection resistance R4 of diode D3 and electricity
Hold the other end of C1, the base stage of the other end connecting triode V3 of resistance R3, the emitter stage connection resistance R4's of audion V3 are another
One end, the colelctor electrode of audion V3 connect the other end of loudspeaker B.
2. a kind of DC source short-circuit protector according to claim 1, it is characterised in that the diode D1 and two poles
Pipe D2 is light emitting diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620928073.1U CN206135384U (en) | 2016-08-23 | 2016-08-23 | Short-circuit protector for DC power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620928073.1U CN206135384U (en) | 2016-08-23 | 2016-08-23 | Short-circuit protector for DC power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206135384U true CN206135384U (en) | 2017-04-26 |
Family
ID=58564977
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620928073.1U Expired - Fee Related CN206135384U (en) | 2016-08-23 | 2016-08-23 | Short-circuit protector for DC power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206135384U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107276030A (en) * | 2017-06-24 | 2017-10-20 | 佛山市德新科技孵化器有限公司 | A kind of safety electric shock-prevention socket circuit |
| CN107656829A (en) * | 2017-09-15 | 2018-02-02 | 新乡学院 | A kind of computer fault alarm device |
| CN109302776A (en) * | 2018-12-06 | 2019-02-01 | 上汽大众汽车有限公司 | A lighting circuit for automobile switch function indication |
| CN115691371A (en) * | 2021-07-27 | 2023-02-03 | 北京京东方显示技术有限公司 | Protection unit, display and protection method thereof, door of refrigeration equipment and refrigeration equipment |
| CN119495500A (en) * | 2024-11-23 | 2025-02-21 | 湖南高速铁路职业技术学院 | A protective device and circuit for electrical engineering distribution transformer |
-
2016
- 2016-08-23 CN CN201620928073.1U patent/CN206135384U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107276030A (en) * | 2017-06-24 | 2017-10-20 | 佛山市德新科技孵化器有限公司 | A kind of safety electric shock-prevention socket circuit |
| CN107656829A (en) * | 2017-09-15 | 2018-02-02 | 新乡学院 | A kind of computer fault alarm device |
| CN109302776A (en) * | 2018-12-06 | 2019-02-01 | 上汽大众汽车有限公司 | A lighting circuit for automobile switch function indication |
| CN109302776B (en) * | 2018-12-06 | 2024-02-02 | 上汽大众汽车有限公司 | Lighting circuit for indicating automobile switch function |
| CN115691371A (en) * | 2021-07-27 | 2023-02-03 | 北京京东方显示技术有限公司 | Protection unit, display and protection method thereof, door of refrigeration equipment and refrigeration equipment |
| CN119495500A (en) * | 2024-11-23 | 2025-02-21 | 湖南高速铁路职业技术学院 | A protective device and circuit for electrical engineering distribution transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20170426 Termination date: 20170823 |