CN106817102A - A kind of volume adjustment device, volume adjusting method and a kind of electronic equipment - Google Patents
A kind of volume adjustment device, volume adjusting method and a kind of electronic equipment Download PDFInfo
- Publication number
- CN106817102A CN106817102A CN201611148100.4A CN201611148100A CN106817102A CN 106817102 A CN106817102 A CN 106817102A CN 201611148100 A CN201611148100 A CN 201611148100A CN 106817102 A CN106817102 A CN 106817102A
- Authority
- CN
- China
- Prior art keywords
- voltage
- wave
- comparator
- variable voltage
- volume adjusting
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G7/00—Volume compression or expansion in amplifiers
- H03G7/002—Volume compression or expansion in amplifiers in untuned or low-frequency amplifiers, e.g. audio amplifiers
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Control Of Amplification And Gain Control (AREA)
Abstract
The invention discloses a kind of volume adjustment device, volume adjusting method and a kind of electronic equipment, the volume adjustment device includes：Triangle wave generating circuit, for generating triangular wave, and the triangle wave voltage is exported to level comparison circuit；There is circuit in variable voltage, for producing variable voltage according to outside volume adjusting control signal, and export to the level comparison circuit variable voltage, wherein, the variable voltage is less than the ceiling voltage of the triangular wave and more than the minimum voltage of the triangular wave；The level comparison circuit, is compared for the triangle wave voltage and the variable voltage to being input into, and forms the pulse width modulating signal of variable duty ratio, and by pulse width modulating signal output, so as to realize volume adjusting；The present invention solves the problems, such as volume adjusting high cost.
Description
It is on November 12nd, 2013, Application No. 201310560956.2, entitled that present patent application is the applying date
A kind of divisional application of the Chinese invention patent application of " volume adjustment device, volume adjusting method and a kind of electronic equipment ".
Technical field
The present invention relates to audio signal processing technique field, more particularly to a kind of volume adjustment device, volume adjusting method and
A kind of electronic equipment.
Background technology
Volume adjustment device in the market, more by after swept resistance partial pressure, through A-D converter ADC collection voltages
Value is realized, but the price of the microcontroller on the market with ADC functions costly, is unfavorable for the control of cost at present,
So that market competitiveness relative reduction.
The content of the invention
The invention provides a kind of volume adjustment device, volume adjusting method and a kind of electronic equipment, to solve volume
Adjustment cost problem high.
The present invention provides a kind of volume adjustment device, and described device includes：
Triangle wave generating circuit, for generating triangular wave, and the triangle wave voltage is exported to level comparison circuit；
There is circuit in variable voltage, for producing variable voltage according to outside volume adjusting control signal, and will be described
Variable voltage is exported to the level comparison circuit, wherein, the variable voltage is less than the ceiling voltage of the triangular wave and big
In the minimum voltage of the triangular wave；
The level comparison circuit, is compared, shape for the triangle wave voltage and the variable voltage to being input into
Into the pulse width modulating signal of variable duty ratio, and by pulse width modulating signal output, so as to realize volume adjusting；
Wherein, it is potentiometer that the variable voltage occurs circuit；
First fixation pin of the potentiometer is connected by a divider resistance with power supply, and the second of the potentiometer consolidates
Determine pin to be grounded by another divider resistance, the moving plate pin of the potentiometer is connected with the level comparison circuit.
Preferably, described device also includes：Microcontroller, the pulse width for reading the level comparison circuit output
The dutycycle of modulated signal, so as to realize volume adjusting.
Preferably, the triangle wave generating circuit includes：
Square-wave generator, for generating square wave, and the square wave is exported to waver；
The waver, for the square wave being input into be converted into triangular wave, and by the triangle wave voltage
Export to level comparison circuit.
Preferably, the square-wave generator includes：The hysteresis loop comparator of RC oscillating circuits and anti-phase input.
Preferably, the waver includes the second comparator, the 5th resistance, the 6th resistance and the second electric capacity；Its
In：One end of 5th resistance is connected with the output end of the hysteresis loop comparator of the anti-phase input, the other end and described second
The positive input terminal of comparator is connected, and the negative input end of second comparator is by the 6th resistance eutral grounding, second electricity
It is the positive feedback loop element of second comparator to hold.
Preferably, the level comparison circuit is comparator, wherein：The output end of the triangle wave generating circuit with it is described
The positive input terminal of comparator is connected, and the output end that the variable voltage occurs circuit is connected with the negative input end of the comparator,
The output end output pulse width modulated signal of the comparator.
The present invention also provides a kind of electronic equipment, and the electronic equipment includes volume adjustment device as described above.
The present invention provides a kind of volume adjusting method, and methods described includes：
Triangular wave is produced, and exports the triangle wave voltage；
Variable voltage is produced according to outside volume adjusting control signal using potentiometer, and exports the variable voltage,
Wherein, the variable voltage is less than the ceiling voltage of the triangular wave and more than the minimum voltage of the triangular wave；
The triangle wave voltage and the variable voltage are compared, the pulse width modulation letter of variable duty ratio is formed
Number, and by pulse width modulating signal output, so as to realize volume adjusting.
Preferably, it is described by pulse width modulating signal output, so as to realize that volume adjusting includes：Export the arteries and veins
Modulated signal, reads the dutycycle of the pulse width modulating signal, so as to realize volume adjusting.
The beneficial effect of the embodiment of the present invention is：When volume adjusting is carried out, the MCU with ADC is not used, but use three
Angle ripple produces variable voltage as volume adjuster by the use of potentiometer as fundamental wave according to outside volume adjusting control signal,
Voltage ratio is carried out compared with so as to form the pulse width modulating signal of variable duty ratio, then by reading the pulse width modulation
The dutycycle of signal, determines the output current potential of volume adjuster, so that it is determined that the volume of volume adjuster, realizes that volume is adjusted
Section, the present invention is applied to the equipment that major part needs using volume adjusting, its low cost, is easy to operation.
Brief description of the drawings
Fig. 1 is a kind of structure chart of volume adjustment device of one embodiment of the invention；
Fig. 2 is a kind of another structure chart of volume adjustment device of one embodiment of the invention；
Fig. 3 is the structure chart of the triangle wave generating circuit of one embodiment of the invention；
Fig. 4 is the circuit diagram of the square-wave generator of one embodiment of the invention；
Fig. 5 is the circuit diagram of the waver of one embodiment of the invention；
There is the circuit diagram of circuit for the variable voltage of one embodiment of the invention in Fig. 6；
Fig. 7 is a kind of integrated circuit figure of volume adjustment device of one embodiment of the invention；
Fig. 8 is the structure chart of a kind of electronic equipment of one embodiment of the invention；
Fig. 9 is a kind of flow chart of volume adjusting method of one embodiment of the invention.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing to embodiment party of the present invention
Formula is described in further detail.
Fig. 1 is a kind of structure chart of volume adjustment device provided in an embodiment of the present invention, and described device 100 includes：
Triangle wave generating circuit 110, for generating triangular wave, and exports more electric to level by the triangle wave voltage
Road；
There is circuit 120 in variable voltage, for producing variable voltage according to outside volume adjusting control signal, and by institute
Variable voltage is stated to export to the level comparison circuit, wherein, the variable voltage less than the triangular wave ceiling voltage and
More than the minimum voltage of the triangular wave；
The level comparison circuit 130, is compared for the triangle wave voltage and the variable voltage to being input into,
The pulse width modulating signal of variable duty ratio is formed, and by pulse width modulating signal output, so as to realize that volume is adjusted
Section.
In one embodiment of the invention, the triangle wave generating circuit can also be replaced with saw-tooth wave generating circuit,
Other steps that it realizes volume adjusting are constant.
Fig. 2 is a kind of another structure chart of volume adjustment device of one embodiment of the invention；In this embodiment, the dress
Putting 200 includes：There is circuit 220, level comparison circuit 230 and microcontroller in triangle wave generating circuit 210, variable voltage
240, wherein, the function phase of the triangle wave generating circuit 110 in the function and Fig. 1 of the triangle wave generating circuit 210 is same, described
The function phase that the time variant voltage that variable voltage occurs in the function and Fig. 1 of circuit 220 occurs circuit 120 is same, and the level is more electric
The function phase of the level comparison circuit 130 in the function and Fig. 1 on road 230 is same, will not be described in great detail herein；
The microcontroller 240, for reading accounting for for the pulse width modulating signal that the level comparison circuit 230 is exported
Sky ratio, so as to realize volume adjusting.
Specifically, the timer in microcontroller 240 is read out to pulse width modulating signal timing, due to base
Ripple is triangular wave, therefore the dutycycle of the pulse width modulating signal for being formed is not constant, and timer reads high level respectively
And low duration, so that it is determined that variable voltage occur circuit output voltage, then by with " voltage-volume table of comparisons "
Compare, so that it is determined that the current volume of equipment, occurs the voltage of circuit output by changing variable voltage, realize that volume is adjusted
Section.
Fig. 3 is the structure chart of the triangle wave generating circuit of one embodiment of the invention, and the triangle wave generating circuit 300 is wrapped
Include：
Square-wave generator 310, for generating square wave, and the square wave is exported to waver 320；
The waver 320 for being converted into triangular wave and the triangular wave is electric by the square wave being input into
Pressure is exported to level comparison circuit.
Specifically, the square-wave generator 310 includes：The hysteresis loop comparator of RC oscillating circuits and anti-phase input.Fig. 4
Show the circuit diagram of square-wave generator 310；Wherein, first comparator U1-A is four tunnel amplifiers, and R1, C1 are that RC vibrates electricity
Road, both as delay link, and as feedback network, the automatic conversion of output state is realized by the discharge and recharge of R1, C1；First
Comparator U1-A, R2 and R3 are the hysteresis loop comparator of anti-phase input, and D1 is voltage-regulator diode, current-limiting resistance R4；As R1, C1
When charging voltage is higher or lower than the branch pressure voltage of R2, R3, first comparator U1-A produces reversion, so as to produce square wave.
Fig. 5 is the circuit diagram of the waver 320 of one embodiment of the invention, and the waver 320 includes second
Comparator U1-B, the 5th resistance R5, the 6th resistance R6 and the second electric capacity C2；Wherein：One end of the 5th resistance R5 and institute
State anti-phase input hysteresis loop comparator output end be connected, the other end be connected with the positive input terminal of the second comparator U1-B,
The negative input end of the second comparator U1-B is grounded by the 6th resistance R6, and the second electric capacity C2 is the described second ratio
Positive feedback loop element compared with device U1-B.Wherein, the 5th resistance R5, the second electric capacity C2 and the second comparator U1-B are
Integrating circuit, realizes square wave to the conversion of triangular wave, and the 5th resistance R5, the second electric capacity C2 are basic integrating circuit, the
Two comparator U1-B realize active integration, improve stability.
There is the circuit diagram of circuit in Fig. 6, the variable voltage occurs circuit and is for the variable voltage of one embodiment of the invention
Potentiometer P；The first fixation pin of the potentiometer P is connected by a divider resistance R10 with power vd D, the potentiometer P
The second fixation pin by another divider resistance R11 ground connection, the moving plate pin of the potentiometer compares electric with the level
Road is connected.Wherein, the potentiometer P can be rotary variable resistance, when the switch of the rotary variable resistance is stirred, electricity
The resistance of position device P produces change, causes the voltage of output to produce change, that is to say, that variable voltage occurs the voltage of circuit output
Reflect the anglec of rotation of potentiometer P.The effect of the divider resistance R10 and divider resistance R11 is regulation potentiometer output electricity
The scope of pressure so that the voltage of potentiometer output is not less than the minimum value of triangle wave voltage and the not higher than maximum of triangle wave voltage
Value, so that when the output voltage of potentiometer is compared with the voltage of triangular wave by comparator, the output end of comparator
Upset can be realized, so as to form pulse width modulating signal.
In an embodiment of the present invention, the level comparison circuit is comparator U1-C, as shown in fig. 7, wherein：Described three
The output end of angle wave generation circuit is connected with the positive input terminal of the comparator, the variable voltage occur the output end of circuit with
The negative input end of the comparator is connected, the output end output pulse width modulated signal of the comparator.
, in concrete operations, the integrated circuit figure of the volume adjustment device according to Fig. 7 is realized for the present invention；Wherein, C3 is used
It is filtered in the output voltage to potentiometer P；When potentiometer P is stirred by electric resistance partial pressure, the output voltage of potentiometer P is produced
Changing, when triangle wave voltage is higher than potentiometer P output voltages, comparator U1-C output high level, when triangle wave voltage is low
When potentiometer output voltage, comparator U1-C output low levels are realized producing pulse width modulation (PWM) letter by this method
Number, the pwm signal that microcontroller reads conversion judges volume.
In one embodiment of the invention, the first comparator U1-A, first comparator U1-B and comparator U1-
C is the four road operational amplifier LM324 with differential input.
Fig. 8 is the structure chart of a kind of electronic equipment of one embodiment of the invention, and the electronic equipment 800 includes as described above
Volume adjustment device 810.
Fig. 9 is a kind of flow chart of volume adjusting method of one embodiment of the invention, and methods described includes：
S910, generation triangular wave, and export the triangle wave voltage；
S920, the volume adjusting control signal generation variable voltage according to outside, and the variable voltage is exported, wherein,
The variable voltage is less than the ceiling voltage of the triangular wave and more than the minimum voltage of the triangular wave；
S930, the triangle wave voltage and the variable voltage are compared, form the pulse width of variable duty ratio
Modulated signal, and by pulse width modulating signal output, so as to realize volume adjusting.
In an embodiment of the present invention, it is described by pulse width modulating signal output, so as to realize volume adjusting bag
Include：The pulse-modulated signal is exported, the dutycycle of the pulse width modulating signal is read, so as to realize volume adjusting.
The beneficial effect of the embodiment of the present invention is：When volume adjusting is carried out, the MCU with ADC is not used, but use three
Angle ripple produces variable voltage as volume adjuster by the use of potentiometer as fundamental wave according to outside volume adjusting control signal,
Voltage ratio is carried out compared with so as to form the pulse width modulating signal of variable duty ratio, then by reading the pulse width modulation
The dutycycle of signal, determines the output current potential of volume adjuster, so that it is determined that the volume of volume adjuster, realizes that volume is adjusted
Section, the present invention is applied to the equipment that major part needs using volume adjusting, its low cost, is easy to operation.
Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the scope of the present invention.It is all
Any modification, equivalent substitution and improvements made within the spirit and principles in the present invention etc., are all contained in protection scope of the present invention
It is interior.
Claims (9)
1. a kind of volume adjustment device, it is characterised in that described device includes：
Triangle wave generating circuit, for generating triangular wave, and the triangle wave voltage is exported to level comparison circuit；
There is circuit in variable voltage, for producing variable voltage according to outside volume adjusting control signal, and will be described variable
Voltage output to the level comparison circuit, wherein, the variable voltage less than the triangular wave ceiling voltage and more than institute
State the minimum voltage of triangular wave；
The level comparison circuit, is compared for the triangle wave voltage and the variable voltage to being input into, and formation is accounted for
Sky exports the pulse width modulating signal than variable pulse width modulating signal, so as to realize volume adjusting；
Wherein, it is potentiometer that the variable voltage occurs circuit；
First fixation pin of the potentiometer is connected by a divider resistance with power supply, and the second fixation of the potentiometer is drawn
Pin is grounded by another divider resistance, and the moving plate pin of the potentiometer is connected with the level comparison circuit.
2. device as claimed in claim 1, it is characterised in that described device also includes：
Microcontroller, the dutycycle of the pulse width modulating signal for reading the level comparison circuit output, so as to realize
Volume adjusting.
3. device as claimed in claim 1, it is characterised in that the triangle wave generating circuit includes：
Square-wave generator, for generating square wave, and the square wave is exported to waver；
The waver, for the square wave being input into be converted into triangular wave, and the triangle wave voltage is exported
To level comparison circuit.
4. device as claimed in claim 3, it is characterised in that the square-wave generator includes：RC oscillating circuits and anti-
The hysteresis loop comparator being mutually input into.
5. device as claimed in claim 4, it is characterised in that the waver include the second comparator, the 5th resistance,
6th resistance and the second electric capacity；Wherein：
One end of 5th resistance is connected with the output end of the hysteresis loop comparator of the anti-phase input, the other end and described second
The positive input terminal of comparator is connected, and the negative input end of second comparator is by the 6th resistance eutral grounding, second electricity
It is the positive feedback loop element of second comparator to hold.
6. device as claimed in claim 1, it is characterised in that the level comparison circuit is comparator, wherein：
The output end of the triangle wave generating circuit is connected with the positive input terminal of the comparator, and the variable voltage occurs circuit
Output end be connected with the negative input end of the comparator, the output end output pulse width modulated signal of the comparator.
7. a kind of electronic equipment, it is characterised in that the electronic equipment includes the volume tune as described in claim any one of 1-6
Regulating device.
8. a kind of volume adjusting method, it is characterised in that methods described includes：
Triangular wave is produced, and exports the triangle wave voltage；
Variable voltage is produced according to outside volume adjusting control signal using potentiometer, and exports the variable voltage, wherein,
The variable voltage is less than the ceiling voltage of the triangular wave and more than the minimum voltage of the triangular wave；
The triangle wave voltage and the variable voltage are compared, the pulse width modulating signal of variable duty ratio is formed,
And by pulse width modulating signal output, so as to realize volume adjusting.
9. method as claimed in claim 8, it is characterised in that described by pulse width modulating signal output, so that real
Existing volume adjusting includes：
The pulse-modulated signal is exported, the dutycycle of the pulse width modulating signal is read, so as to realize volume adjusting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611148100.4A CN106817102A (en) | 2013-11-12 | 2013-11-12 | A kind of volume adjustment device, volume adjusting method and a kind of electronic equipment |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611148100.4A CN106817102A (en) | 2013-11-12 | 2013-11-12 | A kind of volume adjustment device, volume adjusting method and a kind of electronic equipment |
| CN201310560956.2A CN103701421B (en) | 2013-11-12 | 2013-11-12 | Volume regulating device, volume regulating method and electronic equipment |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310560956.2A Division CN103701421B (en) | 2013-11-12 | 2013-11-12 | Volume regulating device, volume regulating method and electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106817102A true CN106817102A (en) | 2017-06-09 |
Family
ID=50362848
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611148100.4A Pending CN106817102A (en) | 2013-11-12 | 2013-11-12 | A kind of volume adjustment device, volume adjusting method and a kind of electronic equipment |
| CN201310560956.2A Active CN103701421B (en) | 2013-11-12 | 2013-11-12 | Volume regulating device, volume regulating method and electronic equipment |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310560956.2A Active CN103701421B (en) | 2013-11-12 | 2013-11-12 | Volume regulating device, volume regulating method and electronic equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN106817102A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107120303A (en) * | 2017-07-13 | 2017-09-01 | 迈普通信技术股份有限公司 | Circuit for controlling speed of fan and communication equipment |
| CN117081360A (en) * | 2023-07-10 | 2023-11-17 | 哈尔滨工业大学 | Voltage regulation control method of full-bridge inverter circuit |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104459289A (en) * | 2014-12-22 | 2015-03-25 | 青岛歌尔声学科技有限公司 | Detection circuit and detection method based on waveform transformation |
| CN105024598B (en) * | 2015-07-13 | 2017-08-04 | 青岛歌尔声学科技有限公司 | A kind of DC motor drive circuit and the electronic equipment with the circuit |
| CN108566226B (en) * | 2018-06-27 | 2023-06-06 | 大唐终端技术有限公司 | State adjusting method of electronic equipment |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6240191B1 (en) * | 1996-10-31 | 2001-05-29 | Samsung Electronics, Co., Ltd. | Audio volume control circuit using pulse width modulation signal |
| CN1512672A (en) * | 2002-12-28 | 2004-07-14 | 鸿富锦精密工业（深圳）有限公司 | Digital signal generator |
| CN201273508Y (en) * | 2008-09-25 | 2009-07-15 | 保定维特瑞交通设施工程有限责任公司 | Low-energy consumption solar traffic signal lamp |
| CN101540587A (en) * | 2008-03-17 | 2009-09-23 | 原景科技股份有限公司 | Audio power amplifier and a pre-amplifier thereof |
| TW201039553A (en) * | 2009-04-16 | 2010-11-01 | Realtek Semiconductor Corp | Audio processing chip and audio signal processing method thereof |
| CN201689651U (en) * | 2010-06-10 | 2010-12-29 | 福建升腾资讯有限公司 | Circuit capable of realizing the fixed frequency and adjusting the duty ratio by button |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1101864A (en) * | 1993-10-19 | 1995-04-26 | 武桂兰 | Multifunctional recovering apparatus by foot sole stimulation |
| CN2678250Y (en) * | 2004-01-09 | 2005-02-09 | 李剑 | PWM controller using DMA technology |
| CN101203062A (en) * | 2007-07-20 | 2008-06-18 | 徐利梅 | Method for numeral sound signal processing and digital type sound frequency directional loudspeaker |
| CN101350601A (en) * | 2008-09-04 | 2009-01-21 | 华为技术有限公司 | Power amplifier and signal processing method thereof |
| CN101394166B (en) * | 2008-10-28 | 2011-08-10 | 深圳市矽普特科技有限公司 | Triangle wave generating circuit, pulse width modulation circuit and audio power amplifying circuit |
| CN203645636U (en) * | 2013-11-12 | 2014-06-11 | 青岛歌尔声学科技有限公司 | Volume adjusting device and electronic apparatus |
-
2013
- 2013-11-12 CN CN201611148100.4A patent/CN106817102A/en active Pending
- 2013-11-12 CN CN201310560956.2A patent/CN103701421B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6240191B1 (en) * | 1996-10-31 | 2001-05-29 | Samsung Electronics, Co., Ltd. | Audio volume control circuit using pulse width modulation signal |
| CN1512672A (en) * | 2002-12-28 | 2004-07-14 | 鸿富锦精密工业（深圳）有限公司 | Digital signal generator |
| CN101540587A (en) * | 2008-03-17 | 2009-09-23 | 原景科技股份有限公司 | Audio power amplifier and a pre-amplifier thereof |
| CN201273508Y (en) * | 2008-09-25 | 2009-07-15 | 保定维特瑞交通设施工程有限责任公司 | Low-energy consumption solar traffic signal lamp |
| TW201039553A (en) * | 2009-04-16 | 2010-11-01 | Realtek Semiconductor Corp | Audio processing chip and audio signal processing method thereof |
| CN201689651U (en) * | 2010-06-10 | 2010-12-29 | 福建升腾资讯有限公司 | Circuit capable of realizing the fixed frequency and adjusting the duty ratio by button |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107120303A (en) * | 2017-07-13 | 2017-09-01 | 迈普通信技术股份有限公司 | Circuit for controlling speed of fan and communication equipment |
| CN117081360A (en) * | 2023-07-10 | 2023-11-17 | 哈尔滨工业大学 | Voltage regulation control method of full-bridge inverter circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103701421A (en) | 2014-04-02 |
| CN103701421B (en) | 2017-01-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103580000B (en) | Switching Power Supply output over-voltage protection method and circuit and the Switching Power Supply with this circuit | |
| CN104578800B (en) | Control circuit of switch power supply and switch power supply provided with control circuit | |
| CN103490630B (en) | For control circuit and the control method of staggered-parallel-type Switching Power Supply | |
| CN106817102A (en) | A kind of volume adjustment device, volume adjusting method and a kind of electronic equipment | |
| CN1848683B (en) | Trianglar-wave generator and pulse-width modulation signal generating circuit containing the same | |
| CN101789694A (en) | Power governor and control method thereof | |
| CN102611298A (en) | Power factor correction circuit | |
| CN114629440B (en) | Programmable oscillator circuit and power management chip | |
| CN102468747A (en) | Charge pump control circuit | |
| CN108809071A (en) | A kind of SS (soft start) control circuit and Switching Power Supply of Switching Power Supply | |
| CN110190836A (en) | A kind of pulse-width modulation circuit and electronic equipment | |
| CN103490761A (en) | High-power memristor and control method thereof | |
| CN101741250B (en) | Pulse width modulation control circuit reducing electromagnetic interference by frequency modulation of commercial power and method thereof | |
| CN201805351U (en) | Control circuit for altering frequency of switching power supply | |
| CN106230385A (en) | The adjustable clock generation circuit of frequency of oscillation | |
| CN203645636U (en) | Volume adjusting device and electronic apparatus | |
| CN104682687B (en) | Soft start-based voltage regulating circuit and soft start method thereof | |
| CN204349856U (en) | For the electric power system of transmission line monitoring terminal | |
| CN105811755A (en) | Step-down switching voltage regulator for improving transient response | |
| CN102427342B (en) | Switched capacitor clock generator | |
| CN211046734U (en) | Switching power supply circuit and electronic equipment | |
| CN104734676B (en) | A kind of adjustable comparator circuit of threshold values | |
| CN207737194U (en) | Vehicle-mounted light adjusting controller | |
| CN206908511U (en) | Charging pile Switching Power Supply based on buck conversion | |
| CN206533306U (en) | PWM circuit and DC brushless motor controller |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170609 |
|
| RJ01 | Rejection of invention patent application after publication |