CN106469490A - A kind of electronic circuit alarm for high voltage protection circuit - Google Patents
A kind of electronic circuit alarm for high voltage protection circuit Download PDFInfo
- Publication number
- CN106469490A CN106469490A CN201510508850.7A CN201510508850A CN106469490A CN 106469490 A CN106469490 A CN 106469490A CN 201510508850 A CN201510508850 A CN 201510508850A CN 106469490 A CN106469490 A CN 106469490A
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- CN
- China
- Prior art keywords
- circuit
- alarm
- high voltage
- potentiometer
- audion
- 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.)
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Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B3/00—Audible signalling systems; Audible personal calling systems
- G08B3/10—Audible signalling systems; Audible personal calling systems using electric transmission; using electromagnetic transmission
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Alarm Systems (AREA)
Abstract
The invention discloses a kind of electronic circuit alarm for high voltage protection circuit, including power circuit, potentiometer RP, Zener diode VD1, VD2, voltage comparator ic, audion G and alarm H；Power circuit positive pole connects first end and the load of RP, R, H respectively, RP second terminates IC positive input terminal, the base stage of IC output termination G, the colelctor electrode of G connects second end of H, the emitter stage of G connects load, second end of VD1, second end of RP and power cathode respectively, and second end of VD1 connects the second end and the IC negative input end of R respectively through Zener diode.The present invention has alarm for high voltage function; once voltage is higher; alarm will send alarm sound; remind user overtension; user can deenergization in time, to protect electrical equipment, effectively prevent electrical equipment and damage because of overtension; extend the service life of electrical equipment, also extend the service life of electronic circuit simultaneously.
Description
Technical field
Specifically a kind of electronic circuit alarm for high voltage protection circuit of the present invention, belongs to electronic circuit technology field.
Background technology
In electronic circuit, such as when using electrical equipment, often because in circuit occur overtension but some components and parts
Damage, even result in whole circuit and scrap.At present, there is the technical scheme of numerous overvoltage protections on the market, but mainly logical
Cross and provide stable voltage to realize overvoltage protection, however it remains main circuit skewered leads to the phenomenon that electrical equipment damages, and increased and makes
The use cost of user.
Content of the invention
The problem existing for above-mentioned background technology, the present invention provides a kind of electronic circuit alarm for high voltage protection circuit, once electric
Overtension in road, the alarm device in circuit will be switched on, user according to report to the police can disconnecting circuit power supply in time,
Avoid electric damage, being capable of preferably protection circuit.
To achieve these goals, a kind of electronic circuit of present invention alarm for high voltage protection circuit, including power circuit, potentiometer
RP, Zener diode VD1, VD2, voltage comparator ic, audion G and alarm H；Described power circuit positive pole divides
Do not connect potentiometer RP, resistance R, the first end of alarm H and load, described potentiometer RP the second termination voltage comparator
IC positive input terminal, the base stage of described voltage comparator ic output termination audion G, the colelctor electrode of described audion G is taking alarm
Second end of device H, the emitter stage of described audion G meets load, second end of Zener diode VD1, potentiometer RP respectively
The second end and power cathode, second end of described Zener diode VD1 through Zener diode respectively connecting resistance R second
End and voltage comparator ic negative input end.
Preferably, described alarm H is buzzer or music player, and alarm sound is big, can timely and effectively remind use
Person's deenergization, to protect electronic circuit, the cost of buzzer or music player is relatively low simultaneously, is conducive to saving to use into
This.
Further, described power circuit is mainly made up of mu balanced circuit, rectification circuit and filter circuit, described mu balanced circuit with
Rectification circuit electrically connects, and described rectification circuit is electrically connected with filter circuit, with further protection circuit.
Compared with prior art, the present invention has alarm for high voltage function, once voltage is higher, alarm will send chimes of doom
Sound, reminds user overtension, user can deenergization in time, to protect electrical equipment, effectively prevent electrical equipment because of electricity
Press through height and damage, extend the service life of electrical equipment, also extend the service life of electronic circuit simultaneously.
Brief description
Fig. 1 is overall structure diagram of the present invention.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings.
As shown in figure 1, a kind of electronic circuit alarm for high voltage protection circuit, including power circuit, potentiometer RP, voltage stabilizing two pole
Pipe VD1, VD2, voltage comparator ic, audion G and alarm H；Described power circuit positive pole connect respectively potentiometer RP,
Resistance R, the first end of alarm H and load, described potentiometer RP the second termination voltage comparator IC positive input terminal, institute
State voltage comparator ic output termination audion G base stage, second end of the colelctor electrode device taking alarm H of described audion G,
The emitter stage of described audion G connects load, second end of Zener diode VD1, second end of potentiometer RP and electricity respectively
Source negative pole, second end of connecting resistance R and voltage ratio be relatively respectively through Zener diode for second end of described Zener diode VD1
Device IC negative input end.
As the preferred version to technique scheme for the present invention, described alarm H is buzzer or music player, reports to the police
Sound is big, can timely and effectively remind user deenergization, to protect electronic circuit, buzzer or music player simultaneously
Cost relatively low, be conducive to save use cost.
As the improvement to technique scheme for the present invention, described power circuit is mainly by mu balanced circuit, rectification circuit and filtering
Circuit forms, and described mu balanced circuit is electrically connected with rectification circuit, and described rectification circuit is electrically connected with filter circuit, with further
Protection circuit.
Described voltage accesses the positive input terminal of voltage comparator ic after potentiometer RP partial pressure, through Zener diode VD1, VD2
Voltage comparator ic negative input end is accessed, voltage and negative input end that described voltage comparator ic positive input terminal accesses after voltage stabilizing
The voltage accessing is compared, if positive input terminal voltage is higher than negative input end voltage, audion G is not turned on, and circuit is in
Off-state, buzzer does not work；If positive input terminal voltage is higher than negative input end voltage, audion G turns on, and circuit is even
Logical, alarm H connects electricity and sends chimes of doom.
Claims (3)
1. a kind of electronic circuit alarm for high voltage protection circuit is it is characterised in that include power circuit, potentiometer RP, voltage stabilizing two
Pole pipe VD1, VD2, voltage comparator ic, audion G and alarm H；Described power circuit positive pole connects potentiometer respectively
RP, resistance R, the first end of alarm H and load, described potentiometer RP the second termination voltage comparator IC positive input terminal,
The base stage of described voltage comparator ic output termination audion G, second end of the colelctor electrode device taking alarm H of described audion G,
The emitter stage of described audion G connects load, second end of Zener diode VD1, second end of potentiometer RP and electricity respectively
Source negative pole, second end of connecting resistance R and voltage ratio be relatively respectively through Zener diode for second end of described Zener diode VD1
Device IC negative input end.
2. a kind of electronic circuit alarm for high voltage protection circuit according to claim 1 is it is characterised in that described alarm
H is buzzer or music player.
3. a kind of electronic circuit alarm for high voltage protection circuit according to claim 1 and 2 is it is characterised in that described electricity
Source circuit is mainly made up of mu balanced circuit, rectification circuit and filter circuit, and described mu balanced circuit is electrically connected with rectification circuit, institute
State rectification circuit to electrically connect with filter circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510508850.7A CN106469490A (en) | 2015-08-18 | 2015-08-18 | A kind of electronic circuit alarm for high voltage protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510508850.7A CN106469490A (en) | 2015-08-18 | 2015-08-18 | A kind of electronic circuit alarm for high voltage protection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106469490A true CN106469490A (en) | 2017-03-01 |
Family
ID=58214405
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510508850.7A Pending CN106469490A (en) | 2015-08-18 | 2015-08-18 | A kind of electronic circuit alarm for high voltage protection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106469490A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108169545A (en) * | 2018-02-27 | 2018-06-15 | 南方电网科学研究院有限责任公司 | Discharge counting circuit and discharge counter |
-
2015
- 2015-08-18 CN CN201510508850.7A patent/CN106469490A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108169545A (en) * | 2018-02-27 | 2018-06-15 | 南方电网科学研究院有限责任公司 | Discharge counting circuit and discharge counter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170301 |
|
| WD01 | Invention patent application deemed withdrawn after publication |