CN208001271U - A kind of adjustable PWM wave generator of frequency duty ratio - Google Patents
A kind of adjustable PWM wave generator of frequency duty ratio Download PDFInfo
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- CN208001271U CN208001271U CN201820527694.8U CN201820527694U CN208001271U CN 208001271 U CN208001271 U CN 208001271U CN 201820527694 U CN201820527694 U CN 201820527694U CN 208001271 U CN208001271 U CN 208001271U
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- duty ratio
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Abstract
Include with the display module for preventing the power module of reversed and afterflow protection, the control module of progress Data Analysis Services, the adjustment module for adjusting frequency duty ratio, the output module and charactron display frequency and duty ratio that whether are exported with LED light indication signal the utility model discloses a kind of adjustable PWM wave generator of frequency duty ratio;The power module is connect with the control module, adjustment module, output module, display module respectively;The control module is connect with the adjustment module, output module, display module respectively;The pwm signal wave that the utility model generates can be achieved continuously adjustable in frequency and duty ratio;Display module can instant playback go out its frequency, the concrete numerical value of duty ratio, very intuitively.
Description
Technical field
The utility model is related to arrive PWM wave frequency duty cycle adjustment technical field more particularly to a kind of frequency duty ratio
Adjustable PWM wave generator.
Background technology
Pwm signal has wide range of applications, but its frequency and duty ratio adjust simultaneously and can immediate observation to having
Lack related application in terms of body numerical value.
Therefore, the prior art is defective, needs to improve.
Utility model content
The utility model provides a kind of adjustable PWM wave generator of frequency duty ratio, the above problem of solution.
To solve the above problems, the technical scheme that the utility model is provided is as follows:
A kind of adjustable PWM wave generator of frequency duty ratio includes with power module, the progress for preventing reversed and afterflow protection
The control module of Data Analysis Services, the adjustment module for adjusting frequency duty ratio, the output whether exported with LED light indication signal
The display module of module and charactron display frequency and duty ratio;The power module respectively with the control module, adjust mould
Block, output module, display module connection;The control module connects with the adjustment module, output module, display module respectively
It connects.
Preferred technical solution, the power module include power connector POWER, resistance R1, capacitance C1-C12, inductance
L1, diode D1-D2, Light-emitting diode LED 1 and integrated circuit U 1;The 1st end and described two of the power connector POWER
The anode connection of pole pipe D1;The cathode of the diode D1 respectively with the first end of described capacitance C1, C5-C7, C11, C12, institute
State the 1st pin connection of integrated circuit U1;The 2nd end of the power connector POWER, described capacitance C1, C5-C7, C11, C12
Second end, the integrated circuit U1 the 3rd, 5 pins are grounded;The 4th pin of the integrated circuit U1 respectively with the electricity
Feel second end, the first end of described capacitance C2-C4, C8-C10, the first end of the resistance R1 connection of L1;The resistance R1's
Second end is connect with the anode of the Light-emitting diode LED 1;The 2nd pin of the integrated circuit U1 respectively with the diode
The first end connection of the cathode of D2, the inductance L1;The second of positive, described capacitance C2-C4, C8-C10 of the diode D2
It holds, the cathode of the Light-emitting diode LED 1 is grounded;The diode D2 is zener diode;The Light-emitting diode LED 1
For red light emitting diodes;The model LM2576T-5.0 of the integrated circuit U1.
Preferred technical solution, the control module include resistance R13-R27, pull-up exclusion RP1-RP2, capacitance C15-
C16, crystal oscillator Y1 and integrated circuit U 2;The first end of the resistance R1 respectively with the 1st of the pull-up exclusion RP1-RP2,10-17
Pin, the 31st of the integrated circuit U2 the, 40 pins, the resistance R14-R27 first end connection;The integrated circuit U2's
39-32 pins are connect with the 2-9 pins of the pull-up exclusion RP1 respectively successively;The 28-21 of the integrated circuit U2 is managed
Foot is connect with the 2-9 pins of the pull-up exclusion RP2 respectively successively;The 9th pin of the integrated circuit U2 and the resistance
The second end of R13 connects;The first end of the resistance R13, the integrated circuit U2 the 20th pin be grounded;The integrated electricity
The 19th pin of road U2 is connect with the first end of the first end of the capacitance C15, the crystal oscillator Y1 respectively;The integrated circuit U2
The 18th pin connect respectively with the second end of the first end of the capacitance C16, the crystal oscillator Y1;The capacitance C15-C16's
Second end is grounded;The model STC89S52 of the integrated circuit U2.
Preferred technical solution, the adjustment module include resistance R8-R10 and button S1-S3;The first of the resistance R1
End is connect with the first end of the resistance R8-R10 respectively;The second end of the resistance R8 respectively with the button S1 first
The 1st pin connection at end, the integrated circuit U2;The second end of the resistance R9 respectively with the first end of the button S2, institute
State the 2nd pin connection of integrated circuit U2;The second end of the resistance R10 respectively with the first end of the button S3, the collection
It is connected at the 3rd pin of circuit U 2;The second end of the button S1-S3 is grounded;The button S1 is set key;The button
S2 is plus key;The button S3 is to subtract key.
Preferred technical solution, the output module include external power supply VSS, resistance R2, R28-R30, light emitting diode
LED2, triode Q1 and out connector OUT1;The external power supply VSS respectively with the first end of described resistance R2, R30, institute
State the 3rd stitch connection of positive, the described out connector OUT1 of Light-emitting diode LED 2;The Light-emitting diode LED 2 is born
Pole is connect with the first end of the resistance R29;The second end of the resistance R29 respectively with the second end of the resistance R30, described
The 2nd stitch connection of the collector of triode Q1, the out connector OUT1;The second end of the resistance R2 respectively with it is described
The second end of resistance R28, the connection of the base stage of the triode Q1;The first end of the resistance R28 is with the integrated circuit U2's
17th pin connects;The emitter of the triode Q1, the out connector OUT1 the 1st stitch be grounded.
Preferred technical solution, the display module include triode Q3-Q8 and tetrad charactron SM1-SM2;The electricity
The first end of resistance R1 is connect with the emitter of the triode Q3-Q8 respectively;The second end of the resistance R22-R27 is distinguished successively
It is connect with the base stage of the triode Q3-Q8;The collector of the triode Q3-Q5 successively respectively with the tetrad charactron
The 1-3 pins of SM1 connect;The collector of the triode Q6-Q8 1-3 with the tetrad charactron SM2 respectively successively
Pin connects;The second end of resistance R14-R21 a-g, dp pin with the tetrad charactron SM1-SM2 respectively successively
Connection.
Advantageous effect compared with the existing technology is that using the above scheme, the pwm signal wave that the utility model generates is in frequency
Rate and duty ratio can be achieved continuously adjustable;Display module can instant playback go out its frequency, the concrete numerical value of duty ratio, very
Intuitively.
Description of the drawings
Illustrate embodiment or technical solution in the prior art in order to clearer, it below will be to embodiment or the prior art
The required attached drawing used is briefly described in description, it is clear that, the accompanying drawings in the following description is only the one of utility model
A little embodiments for those of ordinary skill in the art without creative efforts, can also be according to these
Attached drawing obtains other attached drawings.
Fig. 1 is a kind of adjustable PWM wave generator functional block diagram of frequency duty ratio of the utility model;
Fig. 2 is a kind of adjustable PWM wave generator power module circuit schematic of frequency duty ratio of the utility model;
Fig. 3 is a kind of adjustable PWM wave generator control module circuit diagram of frequency duty ratio of the utility model;
Fig. 4 is a kind of adjustable PWM wave generator adjustment module circuit diagram of frequency duty ratio of the utility model;
Fig. 5 is a kind of adjustable PWM wave generator output module circuit diagram of frequency duty ratio of the utility model;
Fig. 6 is a kind of adjustable PWM wave generator display module circuit diagram of frequency duty ratio of the utility model.
Specific implementation mode
For the ease of understanding the utility model, in the following with reference to the drawings and specific embodiments, the utility model is carried out more detailed
Thin explanation.The preferred embodiment of the utility model is given in attached drawing.But the utility model can be with many different
Form is realized, however it is not limited to this specification described embodiment.Make to this on the contrary, purpose of providing these embodiments is
The understanding of the disclosure of utility model is more thorough and comprehensive.
It should be noted that when element is referred to as " being fixed on " another element, it can be directly on another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or it may be simultaneously present centering elements.Term used in this specification " fixation ", " integrated molding ",
For illustrative purposes only, the similar unit of structure is to identical label in the figure for "left", "right" and similar statement
Mark.
Unless otherwise defined, technical and scientific term all used in this specification and the skill for belonging to the utility model
The normally understood meaning of technical staff in art field is identical.Art used in the description of the utility model in this specification
Language, which is only for the purpose of describing specific embodiments, is not intended to limitation the utility model.
As shown in figures 1 to 6, one embodiment of the utility model is:
A kind of adjustable PWM wave generator of frequency duty ratio includes with power module, the progress for preventing reversed and afterflow protection
The control module of Data Analysis Services, the adjustment module for adjusting frequency duty ratio, the output whether exported with LED light indication signal
The display module of module and charactron display frequency and duty ratio;The power module respectively with the control module, adjust mould
Block, output module, display module connection;The control module connects with the adjustment module, output module, display module respectively
It connects.
The power module include power connector POWER, resistance R1, capacitance C1-C12, inductance L1, diode D1-D2,
Light-emitting diode LED 1 and integrated circuit U 1;The 1st end of the power connector POWER and the anode of the diode D1 connect
It connects;The cathode of the diode D1 respectively with the first end of described capacitance C1, C5-C7, C11, C12, the integrated circuit U1
1st pin connects;It is the 2nd end of the power connector POWER, the second end of described capacitance C1, C5-C7, C11, C12, described
Integrated circuit U1 the 3rd, 5 pins are grounded;The 4th pin of the integrated circuit U1 respectively with the second end of the inductance L1,
The first end of described capacitance C2-C4, C8-C10, the connection of the first end of the resistance R1;The second end of the resistance R1 with it is described
The anode connection of Light-emitting diode LED 1;The 2nd pin of the integrated circuit U1 respectively with the cathode of the diode D2, described
The first end of inductance L1 connects;The second end of positive, described capacitance C2-C4, C8-C10 of the diode D2, described luminous two
The cathode of pole pipe LED1 is grounded;The diode D2 is zener diode;The Light-emitting diode LED 1 is emitting red light two
Pole pipe;The model LM2576T-5.0 of the integrated circuit U1.
Further, there is the diode D1 power supply to prevent reversed defencive function;The power connector POWER is for connecting
Connect battery or battery pack;The 1st of the power connector POWER, the voltage range between 2 ends is DC6-40V.
The control module includes resistance R13-R27, pull-up exclusion RP1-RP2, capacitance C15-C16, crystal oscillator Y1 and integrates
Circuit U 2;The first end of the resistance R1 respectively with the 1st of the pull-up exclusion RP1-RP2,10-17 pins, the integrated electricity
The 31st of road U2, the first end connection of 40 pins, the resistance R14-R27;The 39-32 pins of the integrated circuit U2 are successively
It is connect respectively with the 2-9 pins of the pull-up exclusion RP1;The 28-21 pins of the integrated circuit U2 successively respectively with institute
State the 2-9 pins connection of pull-up exclusion RP2;The 9th pin of the integrated circuit U2 connects with the second end of the resistance R13
It connects;The first end of the resistance R13, the integrated circuit U2 the 20th pin be grounded;The 19th pipe of the integrated circuit U2
Foot is connect with the first end of the first end of the capacitance C15, the crystal oscillator Y1 respectively;The 18th pin of the integrated circuit U2 point
It is not connect with the second end of the first end of the capacitance C16, the crystal oscillator Y1;The second end of the capacitance C15-C16 is grounded;
The model STC89S52 of the integrated circuit U2.
The adjustment module includes resistance R8-R10 and button S1-S3;The first end of the resistance R1 respectively with the electricity
Hinder the first end connection of R8-R10;The second end of the resistance R8 respectively with the first end of the button S1, the integrated circuit
The 1st pin of U2 connects;The second end of the resistance R9 respectively with the first end of the button S2, the integrated circuit U2
2 pins connect;The second end of the resistance R10 respectively with the first end of the button S3, the 3rd pin of the integrated circuit U2
Connection;The second end of the button S1-S3 is grounded;The button S1 is set key;The button S2 is plus key;The button
S3 is to subtract key.
Further, the button S1 is used for the switching of frequency duty ratio;The button S2-S3 is for adjusting frequency duty
The concrete numerical value of ratio.
The output module include external power supply VSS, resistance R2, R28-R30, Light-emitting diode LED 2, triode Q1 and
Out connector OUT1;The external power supply VSS respectively with the first end of described resistance R2, R30, the Light-emitting diode LED 2
Positive, described out connector OUT1 the 3rd stitch connection;The cathode of the Light-emitting diode LED 2 and the resistance R29
First end connection;The second end of the resistance R29 respectively with the second end of the resistance R30, the current collection of the triode Q1
The 2nd stitch connection of pole, the out connector OUT1;The second end of the resistance R2 respectively with the resistance R28 second
The base stage connection at end, the triode Q1;The first end of the resistance R28 is connect with the 17th pin of the integrated circuit U2;
The emitter of the triode Q1, the out connector OUT1 the 1st stitch be grounded.
Further, the out connector OUT1 the 1st, 2 stitch be used for pwm signal output;In external power supply VSS
Voltage range when being DC3.3-30V, the voltage of the 3rd stitch of the out connector OUT1 by external power supply VSS voltage
Value determines.
The display module includes triode Q3-Q8 and tetrad charactron SM1-SM2;The first end of the resistance R1 is distinguished
It is connect with the emitter of the triode Q3-Q8;The second end of the resistance R22-R27 successively respectively with the triode Q3-
The base stage of Q8 connects;The collector of the triode Q3-Q5 connects with the 1-3 pins of the tetrad charactron SM1 respectively successively
It connects;The collector of the triode Q6-Q8 is connect with the 1-3 pins of the tetrad charactron SM2 respectively successively;The resistance
The second end of R14-R21 is connect with a-g, dp pin of the tetrad charactron SM1-SM2 respectively successively.
Further, the tetrad charactron SM1 the 1st, 2 charactrons are for showing duty ratio;The tetrad charactron
The 3rd charactron of SM1, the tetrad charactron SM2 1-3 charactrons be used for display frequency.
It should be noted that above-mentioned each technical characteristic continues to be combined with each other, the various embodiments not being enumerated above are formed,
It is accordingly to be regarded as the range of the utility model specification record;Also, it for those of ordinary skills, can be according to above stating
It is bright to be improved or converted, and all these modifications and variations should all belong to the protection model of the appended claims for the utility model
It encloses.
Claims (6)
1. a kind of adjustable PWM wave generator of frequency duty ratio, which is characterized in that include the power supply with anti-reversed and afterflow protection
Whether module, the control module for carrying out Data Analysis Services, the adjustment module for adjusting frequency duty ratio, band LED light indication signal
The display module of the output module and charactron display frequency and duty ratio of output;The power module respectively with the control mould
Block, adjustment module, output module, display module connection;The control module respectively with the adjustment module, output module, aobvious
Show that module connects.
2. the adjustable PWM wave generator of a kind of frequency duty ratio according to claim 1, which is characterized in that the power supply mould
Block includes power connector POWER, resistance R1, capacitance C1-C12, inductance L1, diode D1-D2,1 sum aggregate of Light-emitting diode LED
At circuit U 1;The 1st end of the power connector POWER is connect with the anode of the diode D1;The diode D1's is negative
Pole is connect with the 1st pin of the first end of described capacitance C1, C5-C7, C11, C12, the integrated circuit U1 respectively;The power supply
The 2nd end of connector POWER, the second end of described capacitance C1, C5-C7, C11, C12, the 3rd of the integrated circuit U1 the, 5 pins
It is grounded;The 4th pin of the integrated circuit U1 respectively with the second end of the inductance L1, described capacitance C2-C4, C8-C10
First end, the connection of the first end of the resistance R1;The second end of the resistance R1 and the anode of the Light-emitting diode LED 1 connect
It connects;The 2nd pin of the integrated circuit U1 is connect with the first end of the cathode of the diode D2, the inductance L1 respectively;Institute
State the second end of positive, described capacitance C2-C4, C8-C10 of diode D2, the cathode of the Light-emitting diode LED 1 is grounded;
The diode D2 is zener diode;The Light-emitting diode LED 1 is red light emitting diodes;The integrated circuit U1's
Model LM2576T-5.0.
3. the adjustable PWM wave generator of a kind of frequency duty ratio according to claim 2, which is characterized in that the control mould
Block includes resistance R13-R27, pull-up exclusion RP1-RP2, capacitance C15-C16, crystal oscillator Y1 and integrated circuit U 2;The resistance R1's
First end respectively with the 1st of the pull-up exclusion RP1-RP2,10-17 pins, the 31st of the integrated circuit U2 the, 40 pins, institute
State the first end connection of resistance R14-R27;The 39-32 pins of the integrated circuit U2 successively respectively with the pull-up exclusion
The 2-9 pins of RP1 connect;The 28-21 pins of the integrated circuit U2 2- with the pull-up exclusion RP2 respectively successively
9 pins connect;The 9th pin of the integrated circuit U2 is connect with the second end of the resistance R13;The first of the resistance R13
It holds, the 20th pin of the integrated circuit U2 is grounded;The 19th pin of the integrated circuit U2 is respectively with the capacitance C15's
First end, the connection of the first end of the crystal oscillator Y1;The 18th pin of the integrated circuit U2 respectively with the capacitance C16 first
The second end connection at end, the crystal oscillator Y1;The second end of the capacitance C15-C16 is grounded;The model of the integrated circuit U2
For STC89S52.
4. the adjustable PWM wave generator of a kind of frequency duty ratio according to claim 3, which is characterized in that the adjusting mould
Block includes resistance R8-R10 and button S1-S3;The first end of the resistance R1 connects with the first end of the resistance R8-R10 respectively
It connects;The second end of the resistance R8 is connect with the 1st pin of the first end of the button S1, the integrated circuit U2 respectively;Institute
The second end for stating resistance R9 is connect with the 2nd pin of the first end of the button S2, the integrated circuit U2 respectively;The resistance
The second end of R10 is connect with the 3rd pin of the first end of the button S3, the integrated circuit U2 respectively;The button S1-S3
Second end be grounded;The button S1 is set key;The button S2 is plus key;The button S3 is to subtract key.
5. the adjustable PWM wave generator of a kind of frequency duty ratio according to claim 3, which is characterized in that the output mould
Block includes external power supply VSS, resistance R2, R28-R30, Light-emitting diode LED 2, triode Q1 and out connector OUT1;It is described
External power supply VSS is connected with positive, the described output of the first end of described resistance R2, R30, the Light-emitting diode LED 2 respectively
The 3rd stitch of device OUT1 connects;The cathode of the Light-emitting diode LED 2 is connect with the first end of the resistance R29;The electricity
Hinder R29 second end respectively with the second end of the resistance R30, the collector of the triode Q1, the out connector
The 2nd stitch of OUT1 connects;The second end of the resistance R2 respectively with the second end of the resistance R28, the triode Q1
Base stage connects;The first end of the resistance R28 is connect with the 17th pin of the integrated circuit U2;The transmitting of the triode Q1
Pole, the out connector OUT1 the 1st stitch be grounded.
6. the adjustable PWM wave generator of a kind of frequency duty ratio according to claim 3, which is characterized in that the display mould
Block includes triode Q3-Q8 and tetrad charactron SM1-SM2;The first end of the resistance R1 respectively with the triode Q3-Q8
Emitter connection;The second end of the resistance R22-R27 is connect with the base stage of the triode Q3-Q8 respectively successively;It is described
The collector of triode Q3-Q5 is connect with the 1-3 pins of the tetrad charactron SM1 respectively successively;The triode Q6-Q8
Collector connect respectively with the 1-3 pins of the tetrad charactron SM2 successively;The second end of the resistance R14-R21 according to
It is secondary to be connect respectively with a-g, dp pin of the tetrad charactron SM1-SM2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820527694.8U CN208001271U (en) | 2018-04-14 | 2018-04-14 | A kind of adjustable PWM wave generator of frequency duty ratio |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820527694.8U CN208001271U (en) | 2018-04-14 | 2018-04-14 | A kind of adjustable PWM wave generator of frequency duty ratio |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208001271U true CN208001271U (en) | 2018-10-23 |
Family
ID=63840463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820527694.8U Expired - Fee Related CN208001271U (en) | 2018-04-14 | 2018-04-14 | A kind of adjustable PWM wave generator of frequency duty ratio |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208001271U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110211524A (en) * | 2019-06-04 | 2019-09-06 | 格力电器（郑州）有限公司 | Speed-adjustable automatic display method and device for nixie tube |
-
2018
- 2018-04-14 CN CN201820527694.8U patent/CN208001271U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110211524A (en) * | 2019-06-04 | 2019-09-06 | 格力电器（郑州）有限公司 | Speed-adjustable automatic display method and device for nixie tube |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181023 Termination date: 20210414 |
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| CF01 | Termination of patent right due to non-payment of annual fee |