CN205080676U - Electronic circuit high pressure warning protection circuit - Google Patents
Electronic circuit high pressure warning protection circuit Download PDFInfo
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- CN205080676U CN205080676U CN201520620330.0U CN201520620330U CN205080676U CN 205080676 U CN205080676 U CN 205080676U CN 201520620330 U CN201520620330 U CN 201520620330U CN 205080676 U CN205080676 U CN 205080676U
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- circuit
- alarm
- voltage
- triode
- electronic circuit
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Abstract
The utility model discloses an electronic circuit high pressure warning protection circuit, including power supply circuit, potentiometre RP, zener diode VD1, VD2, voltage comparater IC, triode G and alarm H, the power supply circuit positive pole connects RP, R, H's first end and load respectively, and RP second termination IC positive input terminal, IC export termination G's base, and G's collecting electrode connects H's second end, and G's projecting pole connects load, VD1's second end, RP's second end and power negative pole respectively, and VD1's second end connects R's second to hold and the IC negative input end respectively through zener diode. The utility model discloses have high -pressure alarming function, in case voltage is higher, the alarm will send alarm sound, reminds user's overtension, and the user is the deenergization accessible time to protection electrical apparatus has prevented effectively that electrical apparatus from damaging because of the overtension, has prolonged the life of electrical apparatus, has also prolonged electronic circuit's life simultaneously.
Description
Technical field
The utility model is a kind of electronic circuit alarm for high voltage protection circuit specifically, belongs to electronic circuit technology field.
Background technology
In electronic circuit, such as, when making electrical appliance, often the overtension because occurring in circuit but some component damage, even causing whole circuit to be scrapped.At present, there is the technical scheme of numerous overvoltage protection on the market, but mainly by providing stable voltage to realize overvoltage protection, still there is the phenomenon that main circuit skewered causes electrical equipment to damage, add the use cost of user.
Summary of the invention
For above-mentioned background technology Problems existing; the utility model provides a kind of electronic circuit alarm for high voltage protection circuit; once overtension in circuit; warning device in circuit will be switched on; user can disconnecting circuit power supply in time according to warning; avoid electric damage, can protection circuit preferably.
To achieve these goals, a kind of electronic circuit alarm for high voltage of the utility model protection circuit, comprises power circuit, potentiometer RP, voltage stabilizing diode VD1, VD2, voltage comparator ic, triode G and alarm H; Described power circuit positive pole connects potentiometer RP, resistance R, the first end of alarm H and load respectively, described potentiometer RP second termination voltage comparer IC positive input terminal, described voltage comparator ic exports the base stage of termination triode G, second end of the collector device H taking alarm of described triode G, the emitter of described triode G connects load, second end of voltage stabilizing diode VD1, second end of potentiometer RP and power cathode respectively, and second end of described voltage stabilizing diode VD1 distinguishes the second end and the voltage comparator ic negative input end of connecting resistance R through voltage stabilizing diode.
Preferably, described alarm H is hummer or music player, and alarm sound is large, can remind user's deenergization timely and effectively, and to protect electronic circuit, the cost of hummer or music player is lower simultaneously, is conducive to saving use cost.
Further, described power circuit is primarily of mu balanced circuit, rectification circuit and filtering circuit composition, and described mu balanced circuit is electrically connected with rectification circuit, and described rectification circuit is electrically connected with filtering circuit, with further protection circuit.
Compared with prior art; the utility model has alarm for high voltage function; once voltage is higher; alarm will send alarm sound, reminds user overtension, and user can deenergization in time; with protective device; effectively prevent electrical equipment to damage because of overtension, extend the serviceable life of electrical equipment, also extend the serviceable life of electronic circuit simultaneously.
Accompanying drawing explanation
Fig. 1 is the utility model one-piece construction schematic diagram.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As shown in Figure 1, a kind of electronic circuit alarm for high voltage protection circuit, comprises power circuit, potentiometer RP, voltage stabilizing diode VD1, VD2, voltage comparator ic, triode G and alarm H; Described power circuit positive pole connects potentiometer RP, resistance R, the first end of alarm H and load respectively, described potentiometer RP second termination voltage comparer IC positive input terminal, described voltage comparator ic exports the base stage of termination triode G, second end of the collector device H taking alarm of described triode G, the emitter of described triode G connects load, second end of voltage stabilizing diode VD1, second end of potentiometer RP and power cathode respectively, and second end of described voltage stabilizing diode VD1 distinguishes the second end and the voltage comparator ic negative input end of connecting resistance R through voltage stabilizing diode.
As the preferred version of the utility model to technique scheme; described alarm H is hummer or music player; alarm sound is large; user's deenergization can be reminded timely and effectively; to protect electronic circuit; the cost of hummer or music player is lower simultaneously, is conducive to saving use cost.
As the improvement of the utility model to technique scheme; described power circuit forms primarily of mu balanced circuit, rectification circuit and filtering circuit; described mu balanced circuit is electrically connected with rectification circuit, and described rectification circuit is electrically connected with filtering circuit, with further protection circuit.
Described voltage accesses the positive input terminal of voltage comparator ic after potentiometer RP dividing potential drop, voltage comparator ic negative input end is accessed after voltage stabilizing diode VD1, VD2 voltage stabilizing, the voltage that the voltage of described voltage comparator ic positive input terminal access and negative input end access compares, if positive input terminal voltage is higher than negative input end voltage, then triode G not conducting, circuit is in off-state, and hummer does not work; If positive input terminal voltage is higher than negative input end voltage, then triode G conducting, circuit communication, alarm H connects electricity and sends chimes of doom.
Claims (3)
1. an electronic circuit alarm for high voltage protection circuit, is characterized in that, comprises power circuit, potentiometer RP, voltage stabilizing diode VD1, VD2, voltage comparator ic, triode G and alarm H; Described power circuit positive pole connects potentiometer RP, resistance R, the first end of alarm H and load respectively, described potentiometer RP second termination voltage comparer IC positive input terminal, described voltage comparator ic exports the base stage of termination triode G, second end of the collector device H taking alarm of described triode G, the emitter of described triode G connects load, second end of voltage stabilizing diode VD1, second end of potentiometer RP and power cathode respectively, and second end of described voltage stabilizing diode VD1 distinguishes the second end and the voltage comparator ic negative input end of connecting resistance R through voltage stabilizing diode.
2. a kind of electronic circuit alarm for high voltage protection circuit according to claim 1, it is characterized in that, described alarm H is hummer or music player.
3. a kind of electronic circuit alarm for high voltage protection circuit according to claim 1 and 2; it is characterized in that; described power circuit is primarily of mu balanced circuit, rectification circuit and filtering circuit composition, and described mu balanced circuit is electrically connected with rectification circuit, and described rectification circuit is electrically connected with filtering circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520620330.0U CN205080676U (en) | 2015-08-18 | 2015-08-18 | Electronic circuit high pressure warning protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520620330.0U CN205080676U (en) | 2015-08-18 | 2015-08-18 | Electronic circuit high pressure warning protection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205080676U true CN205080676U (en) | 2016-03-09 |
Family
ID=55433067
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520620330.0U Expired - Fee Related CN205080676U (en) | 2015-08-18 | 2015-08-18 | Electronic circuit high pressure warning protection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205080676U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108899757A (en) * | 2018-05-29 | 2018-11-27 | 国科世纪激光技术（天津）有限公司 | A kind of laser for having the function of electric current and having delayed laser power supply system |
-
2015
- 2015-08-18 CN CN201520620330.0U patent/CN205080676U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108899757A (en) * | 2018-05-29 | 2018-11-27 | 国科世纪激光技术（天津）有限公司 | A kind of laser for having the function of electric current and having delayed laser power supply system |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160309 Termination date: 20170818 |