CN206557280U - A kind of peak voltage detection circuit - Google Patents
A kind of peak voltage detection circuit Download PDFInfo
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- CN206557280U CN206557280U CN201720178217.0U CN201720178217U CN206557280U CN 206557280 U CN206557280 U CN 206557280U CN 201720178217 U CN201720178217 U CN 201720178217U CN 206557280 U CN206557280 U CN 206557280U
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- division module
- voltage detection
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Abstract
The utility model discloses a kind of peak voltage detection circuit, the circuit includes positive pole port and negative pole port, rectification circuit, first resistor division module, second resistance division module, the first diode, the second diode, comparator and the control circuit for controlling crest voltage for being used to access input voltage.Peak voltage detection circuit disclosed in the utility model, circuit structure is simple, and crest voltage collection is accurate；Circuit cost is low, it is easy to be fabricated to a set of general collection crest voltage tool.
Description
Technical field
The utility model is related to electronic technology field, more particularly to a kind of peak voltage detection circuit.
Background technology
Input voltage is a vital parameter for electrical equipment, and can accurately whether be detected to electric
The operation of equipment is very crucial with protecting.
, it is necessary to utilize the crest voltage of AC-input voltage in some engineering practices.Crest voltage is for can in circuit
Ceiling voltage, maximum current and peak power that can occur etc. is an extremely important reference parameter.Voltage, electric current and work(
Rate is in circuit once beyond circuit components specification, it is possible to damages component, and then causes whole circuit to be paralysed.
Therefore, accurate acquisition alternating current crest voltage becomes an important technical task.Traditional method is multiple
Whether toggle switch, it is peak value that input voltage is judged by obtaining the curtage of sampling resistor.But this method was both
It is time-consuming and not accurate, it is extremely difficult to Expected Results.
Utility model content
Main purpose of the present utility model is to propose a kind of peak voltage detection circuit, it is intended to solve prior art presence
The problem of.
To achieve the above object, the utility model embodiment first aspect provides a kind of peak voltage detection circuit, described
Circuit is included for the positive pole port and negative pole port of accessing input voltage, rectification circuit, first resistor division module, the second electricity
Hinder division module, the first diode, the second diode, comparator and the control circuit for controlling crest voltage；
The input of the rectification circuit is connected with the positive pole port and the negative pole port, and the rectification circuit is just
Pole output end and cathode output end are connected with the first resistor division module, the output end of the first resistor division module with
The negative pole end connection of the comparator；
The anode of first diode is connected with the positive pole port, anode and the negative pole of second diode
Port is connected, and the negative electrode of first diode and second diode connects with one end of the second resistance division module
Connect, the other end of the second resistance division module is connected with the cathode output end of the rectification circuit, the second resistance point
The output end of die block is connected with the positive terminal of the comparator；
The earth terminal of the comparator is connected with the cathode output end of the rectification circuit；The output end of the comparator with
One end connection of the control circuit, the other end of the control circuit is connected with the cathode output end of the rectification circuit.
Further, the rectification circuit includes the 3rd diode, the 4th diode, the 5th diode, the 6th diode
The bridge rectifier of composition.
Further, the first resistor division module includes the first resistor and second resistance being connected in series.
Further, the second resistance division module includes 3rd resistor and the 4th resistance being connected in series.
Further, the circuit also includes the first electric capacity, positive pole of first capacitance connection in the rectification circuit
Between output end and cathode output end.
Further, the circuit also includes the second electric capacity, negative pole of second capacitance connection in the rectification circuit
Between the output end of output end and the first resistor division module.
Further, the circuit also includes the 3rd electric capacity, and the 3rd capacitance connection is in the second resistance partial pressure mould
Between the output end and ground of block.
The peak voltage detection circuit that the utility model embodiment is provided, circuit structure is simple, and crest voltage collection is accurate；
Circuit cost is low, it is easy to be fabricated to a set of general collection crest voltage tool.
Brief description of the drawings
The peak voltage detection circuit structural representation that Fig. 1 provides for the utility model embodiment.
Realization, functional characteristics and the advantage of the utility model purpose will be described further referring to the drawings in conjunction with the embodiments.
Embodiment
It should be appreciated that specific embodiment described herein is not used to limit this only to explain the utility model
Utility model.
Each embodiment of the utility model is realized referring now to accompanying drawing description.In follow-up description, using for
The suffix of such as " module ", " part " or " unit " of element is represented only for being conducive to explanation of the present utility model, itself
Not specific meaning.
The description for being related to " first ", " second " etc. in the utility model is only used for describing purpose, and it is not intended that referring to
Show or imply its relative importance or the implicit quantity for indicating indicated technical characteristic.Thus, " first ", " are defined
At least one this feature can be expressed or be implicitly included to two " feature.In addition, the technical scheme between each embodiment can
To be combined with each other, but must can be implemented as basis with those of ordinary skill in the art, when the combination of technical scheme occurs
It is conflicting or when can not realize it will be understood that the combination of this technical scheme is not present, also not in the guarantor of the utility model requirement
Within the scope of shield.
As shown in figure 1, a kind of peak voltage detection circuit that the utility model embodiment is provided, the circuit includes being used to connect
Enter the positive pole port and negative pole port of input voltage, rectification circuit 10, first resistor division module 11, second resistance division module
12nd, the first diode D1, the second diode D2, comparator U1 and the control circuit U 2 for controlling crest voltage.
In the present embodiment, AC-input voltage can input crest voltage detection electricity by positive pole port and negative pole port
Road.
In the present embodiment, rectification circuit 10 includes the 3rd diode D3, the 4th diode D4, the 5th diode D5, the
The bridge rectifier of six diode D6 compositions.
In the present embodiment, first resistor division module 11 includes the first resistor R1 and second resistance R2 being connected in series.
In the present embodiment, second resistance division module 12 includes the 3rd resistor R3 and the 4th resistance R4 being connected in series.
In the present embodiment, the input of rectification circuit is connected with positive pole port and negative pole port, the positive pole of rectification circuit
Output end and cathode output end are connected with first resistor division module 11, specifically the cathode output end of rectification circuit and the first electricity
The first end for hindering R1 is connected (shown in the label 1 in figure in R1), the cathode output end of rectification circuit and the second of second resistance R2
End connection is (shown in the label 2 in figure in R2).The output end (shown in the label A in figure) of first resistor division module 11 is with being compared
Device U1 negative pole end connection.
In the present embodiment, the first diode D1 anode is connected with positive pole port, and the second diode D2 anode is with bearing
Extreme mouth connection, the first diode D1 and the second diode D2 negative electrode are connected with one end of second resistance division module, specifically
Ground is connected (shown in the label 1 in figure in R3) with 3rd resistor R3 first end.The other end of second resistance division module 12 with
The cathode output end connection of rectification circuit, i.e. the 4th resistance R4 the second end (shown in the label 2 in figure in R4) and rectification circuit
Cathode output end connection.The output end (shown in the label B in figure) of second resistance division module 12 and comparator U1 positive pole
End connection；
In the present embodiment, the cathode output end of comparator U1 earth terminal (shown in the label G in figure) and rectification circuit
Connection；Comparator U1 output end controls circuit U 2 with controlling one end of circuit U 2 to be connected (shown in the label 1 in figure in U2)
The other end (shown in the label 2 in figure in U2) is connected with the cathode output end of rectification circuit.
Further, circuit may also include the first electric capacity C1, the first electric capacity C1 and be connected to the cathode output end of rectification circuit
Between cathode output end.
Further, circuit may also include the second electric capacity C2, the second electric capacity C2 and be connected to the cathode output end of rectification circuit
Between the output end (shown in the label A in figure) of first resistor division module.
Further, circuit also includes the 3rd electric capacity C3, and the 3rd electric capacity C3 is connected to the output of second resistance division module
End is (shown in the label B in figure) between ground GND.
Peak voltage detection circuit operation principle of the present utility model approximately as：
When the magnitude of voltage that comparator U1 positive terminal is detected is equal to reference voltage (the alternating current peak of comparator U1 negative pole ends
Threshold voltage) when, comparator U1 output end signal is transmitted to control circuit, and control circuit is that can detect the alternating current peak
During threshold voltage, the crest voltage of the alternating current is controlled or gathers, so as to realize the purpose of the utility model circuit.
The peak voltage detection circuit that the utility model embodiment is provided, circuit structure is simple, and crest voltage collection is accurate；
Circuit cost is low, it is easy to be fabricated to a set of general collection crest voltage tool.
It should be noted that herein, term " comprising ", "comprising" or its any other variant are intended to non-row
His property is included, so that process, method, article or device including a series of key elements not only include those key elements, and
And also including other key elements being not expressly set out, or also include for this process, method, article or device institute inherently
Key element.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that including this
Also there is other identical element in process, method, article or the device of key element.
Preferred embodiment of the present utility model is these are only, the scope of the claims of the present utility model is not thereby limited, it is every
The equivalent structure or equivalent flow conversion made using the utility model specification and accompanying drawing content, or be directly or indirectly used in
Other related technical fields, are similarly included in scope of patent protection of the present utility model.
Claims (7)
1. a kind of peak voltage detection circuit, it is characterised in that the circuit includes the positive pole port for being used to access input voltage
With negative pole port, rectification circuit, first resistor division module, second resistance division module, the first diode, the second diode,
Comparator and the control circuit for controlling crest voltage；
The input of the rectification circuit is connected with the positive pole port and the negative pole port, and the positive pole of the rectification circuit is defeated
Go out end and cathode output end be connected with the first resistor division module, the output end of the first resistor division module with it is described
The negative pole end connection of comparator；
The anode of first diode is connected with the positive pole port, the anode of second diode and the negative pole port
The negative electrode of connection, first diode and second diode is connected with one end of the second resistance division module, institute
The other end for stating second resistance division module is connected with the cathode output end of the rectification circuit, the second resistance division module
Output end be connected with the positive terminal of the comparator；
The earth terminal of the comparator is connected with the cathode output end of the rectification circuit；The output end of the comparator with it is described
One end connection of circuit is controlled, the other end of the control circuit is connected with the cathode output end of the rectification circuit.
2. a kind of peak voltage detection circuit according to claim 1, it is characterised in that the rectification circuit includes the 3rd
Diode, the 4th diode, the 5th diode, the bridge rectifier of the 6th diode composition.
3. a kind of peak voltage detection circuit according to claim 1, it is characterised in that the first resistor division module
Including the first resistor and second resistance being connected in series.
4. a kind of peak voltage detection circuit according to claim 1, it is characterised in that the second resistance division module
Including the 3rd resistor being connected in series and the 4th resistance.
5. according to a kind of any described peak voltage detection circuits of claim 1-4, it is characterised in that the circuit also includes
First electric capacity, first capacitance connection is between the cathode output end and cathode output end of the rectification circuit.
6. according to a kind of any described peak voltage detection circuits of claim 1-4, it is characterised in that the circuit also includes
Second electric capacity, second capacitance connection the rectification circuit cathode output end and the first resistor division module it is defeated
Go out between end.
7. according to a kind of any described peak voltage detection circuits of claim 1-4, it is characterised in that the circuit also includes
3rd electric capacity, the 3rd capacitance connection is between the output end and ground of the second resistance division module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720178217.0U CN206557280U (en) | 2017-02-27 | 2017-02-27 | A kind of peak voltage detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720178217.0U CN206557280U (en) | 2017-02-27 | 2017-02-27 | A kind of peak voltage detection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206557280U true CN206557280U (en) | 2017-10-13 |
Family
ID=60361751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720178217.0U Active CN206557280U (en) | 2017-02-27 | 2017-02-27 | A kind of peak voltage detection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206557280U (en) |
-
2017
- 2017-02-27 CN CN201720178217.0U patent/CN206557280U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20190327 Granted publication date: 20171013 |
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| PP01 | Preservation of patent right |