CN206002595U - A kind of voltage monitor - Google Patents
A kind of voltage monitor Download PDFInfo
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- CN206002595U CN206002595U CN201620909296.3U CN201620909296U CN206002595U CN 206002595 U CN206002595 U CN 206002595U CN 201620909296 U CN201620909296 U CN 201620909296U CN 206002595 U CN206002595 U CN 206002595U
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- 238000012544 monitoring process Methods 0.000 abstract description 3
- 230000000087 stabilizing effect Effects 0.000 abstract description 2
- 230000010355 oscillation Effects 0.000 description 2
- 238000012271 agricultural production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
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- Measurement Of Current Or Voltage (AREA)
Abstract
This utility model discloses a kind of voltage monitor, including resistance R1, chip IC 1, chip IC 3 and loudspeaker B；One end of described resistance R1 connects resistance R3, the emitter stage of resistance R7, power supply VCC and audion V1, the other end of resistance R3 connects the pin 1 of diode D5 and chip IC 1, diode D5, diode D6 and diode D7 are connected in series, and the other end of resistance R1 connects the anode of diode D1, the anode of diode D4, electric capacity C1, electric capacity C2, the pin 1 of loudspeaker B, the emitter stage of audion V2 and chip IC 3.This utility model voltage monitor circuit structure is simple, components and parts are few, fundamental characteristics using diode, combine voltage stabilizing element using two voltage comparators and diode forms bi-directional voltage monitoring modular, run into electric voltage over press or under-voltage equal can send chimes of doom, simultaneously also carry lamplight pointing function.
Description
Technical field
This utility model is related to a kind of watch-dog, specifically a kind of voltage monitor.
Background technology
With the popularization of present electrical equipment, bring revolutionary change to industrial and agricultural production, Defence business, science and technology,
Accelerate the development of society, people have stepped into Electrification Age, so that the quality of life of people is greatly improved,
Increasingly it be unable to do without these electric equipments.With scientific and technological development, the precision of electric equipment also gradually steps up, and there occurs overturns the heavens covers
The change on ground, but how to protect the not interfered by outside of these electric equipments, become the master of current development in science and technology concern
Want problem.The electrical network of China is popularized at present, and it is many convenient that huge network system gives us.But it is as accessing electrical network
User increase, and the variation of consumer electronics, also result in the unstable of supply voltage, voltage fluctuated, also become
Damage the principal element of electric equipment, equipment is chronically at electric voltage exception situation and can cause its service life reduction.
Utility model content
The purpose of this utility model is to provide a kind of structure voltage monitor simple, easy to use, above-mentioned to solve
The problem proposing in background technology.
For achieving the above object, this utility model provides following technical scheme：
A kind of voltage monitor, including resistance R1, chip IC 1, chip IC 3 and loudspeaker B；One end of described resistance R1 connects
Resistance R3, the emitter stage of resistance R7, power supply VCC and audion V1, the other end connection diode D5 of resistance R3 and chip IC 1
Pin 1, diode D5, diode D6 and diode D7 are connected in series, the other end of resistance R1 connect the anode of diode D1, two
The anode of pole pipe D4, electric capacity C1, electric capacity C2, the pin 1 of loudspeaker B, the emitter stage of audion V2 and chip IC 3, diode D7's
Negative electrode connects the anode of diode D1, and the other end of resistance R7 connects the pin 3 of diode D4 and chip IC 2, the drawing of chip IC 1
Foot 4 connects the anode of diode D2, and the negative electrode of diode D2 connects the negative electrode of resistance R4 and diode D3, the pin 4 of chip IC 2
Connect the anode of diode D3, the base stage of the other end connecting triode V2 of resistance R4, the colelctor electrode of audion V2 connects resistance
The base stage of the other end connecting triode V1 of R5, resistance R5, the colelctor electrode of audion V1 connects the pin 4 of chip IC 3, chip
The pin 8 of IC3 and resistance R6, the other end of resistance R6 connects the pin 7 of resistance R7 and chip IC 3, and the other end of resistance R7 is even
Connect the pin 6 of the other end of electric capacity C1, the pin 2 of chip IC 3 and chip IC 3, the pin 3 of chip IC 3 connects electric capacity C3, electric capacity
The other end of C3 connects the other end of loudspeaker B.
As preferred version of the present utility model：Described chip IC 1 and model LM321 of chip IC 2, described chip
Model NE555 of IC3.
As preferred version of the present utility model：Described diode D2 and diode D3 is light emitting diode.
Compared with prior art, the beneficial effects of the utility model are：The letter of this utility model voltage monitor circuit structure
Single, components and parts are few, using the fundamental characteristics of diode, combine voltage stabilizing element using two voltage comparators and diode composition is double
To voltage monitoring module, run into electric voltage over press or under-voltage equal can send chimes of doom, simultaneously also carry lamplight pointing function.
Brief description
Fig. 1 is the circuit diagram of voltage monitor.
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 description is it is clear that described embodiment is only a part of embodiment of this utility model 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 making creative work
The every other embodiment being obtained, broadly falls into the scope of this utility model protection.
Refer to Fig. 1, a kind of voltage monitor, including resistance R1, chip IC 1, chip IC 3 and loudspeaker B；Described resistance R1
One end connect resistance R3, the emitter stage of resistance R7, power supply VCC and audion V1, the other end of resistance R3 connects diode D5
With the pin 1 of chip IC 1, diode D5, diode D6 and diode D7 be connected in series, and the other end of resistance R1 connects diode
The anode of D1, the anode of diode D4, electric capacity C1, electric capacity C2, the pin 1 of loudspeaker B, the emitter stage of audion V2 and chip IC 3,
The negative electrode of diode D7 connects the anode of diode D1, and the other end of resistance R7 connects the pin 3 of diode D4 and chip IC 2,
The pin 4 of chip IC 1 connects the anode of diode D2, and the negative electrode of diode D2 connects the negative electrode of resistance R4 and diode D3, core
The pin 4 of piece IC2 connects the anode of diode D3, the base stage of the other end connecting triode V2 of resistance R4, the collection of audion V2
Electrode connects resistance R5, the base stage of the other end connecting triode V1 of resistance R5, and the colelctor electrode of audion V1 connects chip IC 3
Pin 4, the pin 8 of chip IC 3 and resistance R6, the other end of resistance R6 connects the pin 7 of resistance R7 and chip IC 3, resistance R7
The other end connect electric capacity C1 the other end, the pin 2 of chip IC 3 and chip IC 3 pin 6, the pin 3 of chip IC 3 connects
The other end of electric capacity C3, electric capacity C3 connects the other end of loudspeaker B.
Chip IC 1 and model LM321 of chip IC 2, model NE555 of described chip IC 3.Diode D2 and two poles
Pipe D3 is light emitting diode.
Operation principle of the present utility model is：Resistance R3 in circuit and Zener diode D4 composition the first reference voltage electricity
Road, provides constant reference voltage, resistance R3, diode D5, two poles for in-phase input end 3 foot to voltage comparator ic 2
Pipe D6, diode D7 and Zener diode D1 form the second reference voltage circuit, and reverse input end 1 foot for IC1 provides benchmark
Voltage, resistance R1, resistance R2 form voltage sampling circuit, and its node voltage is the input in the same direction of chip IC 1 and the anti-of IC2
Phase input terminal voltage, due to the conducting voltage of diode constant for 0.7V, therefore 3 foot voltage ratio cores of this circuit chips IC1
The 1 foot voltage of piece IC2 exceeds 2.1V, so the voltage range of normal value of the design is exactly 2.1V, user can increase and decrease two poles
The quantity of pipe changes voltage monitoring scope, and when the voltage of power supply U1 is normal, 3 foot voltages of chip IC 1 are less than 1 foot voltage, core
The 1 foot voltage of piece IC2 is higher than 3 foot voltages, and therefore chip IC 1 and chip IC 2 all exports low level, diode D2 and diode D3
All do not light, audion V2 ends, audion V1 is also not turned on, the agitator being made up of chip IC 3 and its peripheral cell not work
Make, loudspeaker B is also failure to actuate, when undervoltage condition, 1 foot voltage of 3 feet of chip IC 1 and chip IC 2 reduces, and works as chip
When the 1 foot voltage of IC2 is less than the 3 foot voltage of IC2, the 4 foot output high level of IC2, light emitting diode D3 lights, and audion V2 leads
Logical, V1 therefore turns on, agitator starting of oscillation, and loudspeaker B sends chimes of doom, when overpressure situation occurs, 3 feet of chip IC 1 and core
The 1 foot voltage of piece IC2 raises, when the 1 foot voltage that 3 foot voltages of chip IC 1 are higher than IC1, the 4 foot output high level of IC1, and send out
Optical diode D2 lights, and audion V2 turns on, and V1 therefore turns on, agitator starting of oscillation, and loudspeaker B sends chimes of doom, and user can
So that over-pressed or under-voltage judgement is carried out by light emitting diode.
Claims (3)
1. a kind of voltage monitor, including resistance R1, chip IC 1, chip IC 3 and loudspeaker B；It is characterized in that, described resistance R1
One end connect resistance R3, the emitter stage of resistance R7, power supply VCC and audion V1, the other end of resistance R3 connects diode D5
With the pin 1 of chip IC 1, diode D5, diode D6 and diode D7 be connected in series, and the other end of resistance R1 connects diode
The anode of D1, the anode of diode D4, electric capacity C1, electric capacity C2, the pin 1 of loudspeaker B, the emitter stage of audion V2 and chip IC 3,
The negative electrode of diode D7 connects the anode of diode D1, and the other end of resistance R7 connects the pin 3 of diode D4 and chip IC 2,
The pin 4 of chip IC 1 connects the anode of diode D2, and the negative electrode of diode D2 connects the negative electrode of resistance R4 and diode D3, core
The pin 4 of piece IC2 connects the anode of diode D3, the base stage of the other end connecting triode V2 of resistance R4, the collection of audion V2
Electrode connects resistance R5, the base stage of the other end connecting triode V1 of resistance R5, and the colelctor electrode of audion V1 connects chip IC 3
Pin 4, the pin 8 of chip IC 3 and resistance R6, the other end of resistance R6 connects the pin 7 of resistance R7 and chip IC 3, resistance R7
The other end connect electric capacity C1 the other end, the pin 2 of chip IC 3 and chip IC 3 pin 6, the pin 3 of chip IC 3 connects
The other end of electric capacity C3, electric capacity C3 connects the other end of loudspeaker B.
2. a kind of voltage monitor according to claim 1 is it is characterised in that the model of described chip IC 1 and chip IC 2
For LM321, model NE555 of described chip IC 3.
3. a kind of voltage monitor according to claim 1 is it is characterised in that described diode D2 and diode D3 is
Light emitting diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620909296.3U CN206002595U (en) | 2016-08-20 | 2016-08-20 | A kind of voltage monitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620909296.3U CN206002595U (en) | 2016-08-20 | 2016-08-20 | A kind of voltage monitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206002595U true CN206002595U (en) | 2017-03-08 |
Family
ID=58198029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620909296.3U Expired - Fee Related CN206002595U (en) | 2016-08-20 | 2016-08-20 | A kind of voltage monitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206002595U (en) |
-
2016
- 2016-08-20 CN CN201620909296.3U patent/CN206002595U/en not_active Expired - Fee Related
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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 |
Granted publication date: 20170308 |