CN107332458B - Pulse width modulator and pulse power supply - Google Patents
Pulse width modulator and pulse power supply Download PDFInfo
- Publication number
- CN107332458B CN107332458B CN201710742330.1A CN201710742330A CN107332458B CN 107332458 B CN107332458 B CN 107332458B CN 201710742330 A CN201710742330 A CN 201710742330A CN 107332458 B CN107332458 B CN 107332458B
- Authority
- CN
- China
- Prior art keywords
- chip
- potentiometer
- module
- adjustable resistor
- 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.)
- Active
Links
- 239000003990 capacitor Substances 0.000 claims abstract description 39
- 230000008859 change Effects 0.000 claims description 6
- 230000010355 oscillation Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 description 11
- 230000008569 process Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 238000003754 machining Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
- H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
- H03K3/53—Generators characterised by the type of circuit or by the means used for producing pulses by the use of an energy-accumulating element discharged through the load by a switching device controlled by an external signal and not incorporating positive feedback
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K7/00—Modulating pulses with a continuously-variable modulating signal
- H03K7/08—Duration or width modulation ; Duty cycle modulation
Landscapes
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Abstract
The invention discloses a pulse width modulator and a pulse power supply, which comprises an SG3525 chip, a first adjustable resistor module, a dial switch comprising a plurality of gears and a first fixed value capacitor, wherein: the oscillating capacitor end of the SG3525 chip is connected with the first end of the dial switch, the second end of the dial switch is connected with the first constant value capacitor, and the oscillating resistor end of the SG3525 chip is connected with the control end of the first adjustable resistor module; the SG3525 chip is used for adjusting the resistance value of the oscillating resistor end connecting resistor through adjusting the first adjustable resistor module, and is also used for adjusting the capacitance value of the oscillating capacitor end connecting through adjusting the gear of the dial switch so as to adjust the output frequency of the pulse power supply. The invention widens the modulation range of the pulse width modulator on the power output frequency, meets the requirement of continuously adjustable pulse power output frequency, and provides a basis for improving the processing precision of electric jet processing and improving the surface quality of a processed workpiece.
Description
Technical Field
The invention relates to the field of power supply processing, in particular to a pulse width modulator and a pulse power supply.
Background
The electric jet processing is a processing technology integrating electrolytic processing and water jet cutting, and has wide application prospect in the field of metal micro-manufacturing in a micro-dissolution removal mode. In practical application, the electric jet processing generally uses a pulse power supply to supply power, and because the characteristics of each processed workpiece are different, the output frequency of the pulse power supply needs to be flexibly adjusted, i.e. the pulse power supply requires a continuously adjustable output frequency range so as to meet the requirement of practical processing.
In the prior art, the output frequency of the pulse power supply is generally adjusted through a pulse width modulator, and the common pulse width modulator is a digital control pulse width modulator, and because a counter in the digital control pulse width modulator is a four-bit binary counter, the output frequency of the pulse power supply can only be 1/16 of the input clock pulse frequency, so that the modulation range of the pulse width modulator is reduced, the requirement of continuously adjustable output frequency of the pulse power supply cannot be flexibly met, and even the processing precision of electric jet processing can be reduced.
Therefore, how to provide a solution to the technical problems is a problem that the skilled person needs to solve at present
Disclosure of Invention
The invention aims to provide a pulse width modulator, which widens the adjustment range of the output frequency of a pulse power supply, meets the requirement of continuously adjusting the output frequency of the pulse power supply, and provides a basis for improving the processing precision of electric jet processing and improving the surface quality of a processed workpiece. It is another object of the present invention to provide a pulsed power supply.
In order to solve the technical problems, the invention provides a pulse width modulator, which comprises an SG3525 chip, a first adjustable resistor module, a dial switch comprising a plurality of gears and a first constant value capacitor, wherein:
The oscillating capacitor end of the SG3525 chip is connected with the first end of the dial switch, the second end of the dial switch is connected with the first constant value capacitor, and the oscillating resistor end of the SG3525 chip is connected with the control end of the first adjustable resistor module;
The SG3525 chip is used for adjusting the resistance value of the oscillating resistor end connecting resistor through adjusting the first adjustable resistor module, and is also used for adjusting the capacitance value of the oscillating capacitor end connecting through adjusting the gear of the dial switch so as to adjust the output frequency of the pulse power supply.
Preferably, the first adjustable resistor module comprises a first potentiometer and a power supply module, wherein a first end of the first potentiometer is connected with the ground, a second end of the first potentiometer is connected with the power supply module, and a control end of the first potentiometer is used as a control end of the first adjustable resistor module.
Preferably, the first adjustable resistor module further comprises a first fixed value resistor, wherein a first end of the first fixed value resistor is connected with the control end of the first potentiometer, and a second end of the first fixed value resistor is used as the control end of the first adjustable resistor module.
Preferably, the pulse width modulator further comprises a second adjustable resistor module, wherein a control end of the second adjustable resistor module is connected with the non-inverting input end of the SG3525 chip, and the SG3525 chip is further used for changing the reference voltage of the non-inverting input end of the SG3525 chip by adjusting the resistance value of the second adjustable resistor module so as to change the duty ratio of the output voltage.
Preferably, the second adjustable resistor module comprises a second potentiometer, wherein a first end of the second potentiometer is connected with ground, a second end of the second potentiometer is connected with a reference voltage end of the SG3525 chip, and a control end of the second potentiometer is used as a control end of the second adjustable resistor module.
Preferably, the second adjustable resistor module further includes a second constant value resistor, wherein a first end of the second constant value resistor is connected to the control end of the second potentiometer, and a second end of the second constant value resistor is used as the control end of the second adjustable resistor module.
Preferably, the SG3525 chip is further configured to adjust a capacitance value of the oscillating capacitor terminal connection by adjusting a gear of the dial switch, so as to change dead time.
Preferably, the shift position of the dial switch comprises any two or the whole combination of 0.001pF gear, 0.01pF gear or 0.1pF gear.
In order to solve the technical problem, the invention also provides a pulse power supply, which comprises the pulse width modulator.
The invention provides a pulse width modulator, which comprises an SG3525 chip, a first adjustable resistor module, a dial switch comprising a plurality of gears and a first constant value capacitor, wherein: the oscillating capacitor end of the SG3525 chip is connected with the first end of the dial switch, the second end of the dial switch is connected with the first constant value capacitor, and the oscillating resistor end of the SG3525 chip is connected with the control end of the first adjustable resistor module; the SG3525 chip is used for adjusting the resistance value of the oscillating resistor end connecting resistor through adjusting the first adjustable resistor module, and is also used for adjusting the capacitance value of the oscillating capacitor end connecting through adjusting the gear of the dial switch so as to adjust the output frequency of the pulse power supply.
Therefore, in practical application, the pulse width modulator comprising the SG3525 chip and the peripheral circuit thereof provided by the invention is used for changing the capacitance value accessed by the oscillation capacitance end and adjusting the resistance value of the adjustable resistance module by selecting different capacitance gears through the dial switch to jointly adjust the output frequency of the pulse power supply, so that the modulation range of the pulse width modulator on the output frequency of the power supply is widened, the resistance value of the adjustable resistance module can be adjusted at any time according to practical requirements, the requirement of continuously adjusting the output frequency of the pulse power supply is met, and a foundation is provided for improving the processing precision of electric jet processing and improving the surface quality of a processed workpiece.
The invention also provides a pulse power supply, which has the same beneficial effects as the pulse width modulator.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required in the prior art and the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of an internal structure of a pulse width modulator according to the present invention;
fig. 2 is a schematic diagram of another internal structure of a pulse width modulator according to the present invention.
Detailed Description
The invention has the core of providing a pulse width modulator, widening the adjusting range of the output frequency of a pulse power supply, meeting the requirement of continuously adjusting the output frequency of the pulse power supply, and providing a foundation for improving the processing precision of electric jet processing and improving the surface quality of a processed workpiece. Another core of the present invention is to provide a pulsed power supply.
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, fig. 1 is a schematic diagram of an internal structure of a pulse width modulator according to the present invention, including an SG3525 chip 1, a first adjustable resistor module 2, a dial switch 3 including a plurality of gears, and a first constant capacitance 4, wherein:
The oscillating capacitor end of the SG3525 chip 1 is connected with the first end of the dial switch 3, the second end of the dial switch 3 is connected with the first constant value capacitor 4, and the oscillating resistor end of the SG3525 chip 1 is connected with the control end of the first adjustable resistor module 2;
The SG3525 chip 1 is used for adjusting the resistance value of the connection resistor of the oscillating resistor end by adjusting the first adjustable resistor module 2, and is also used for adjusting the capacitance value of the connection of the oscillating capacitor end by adjusting the gear of the dial switch 3 so as to adjust the output frequency of the pulse power supply.
Specifically, the SG3525 chip 1 is a monolithic integrated PWM control chip with excellent performance, complete functions and strong universality, is simple, reliable and convenient and flexible to use, and has the output drive in a push-pull output mode, so that the driving capability is improved; and the SG3525 chip 1 internally comprises an oscillating circuit, and the sawtooth wave frequency output by the oscillating circuit is determined by an external equivalent resistor R T and an external capacitor C T, so that the formula is satisfied:
Specifically, the peripheral circuit built based on the SG3525 chip 1 comprises a dial switch 3 and a first adjustable resistor module 2, wherein the dial switch 3 comprises a plurality of gears, the value of an external capacitor C T connected with the SG3525 chip 1 is changed by selecting different gears, the value of an equivalent resistor R T connected with the SG3525 chip 1 is changed by changing the resistance of the first adjustable resistor module 2, so that the function of adjusting the sawtooth frequency is realized, and the output frequency of the pulse power supply is half of the sawtooth frequency, so that the output frequency of the pulse power supply can be adjusted by selecting different capacitor gears and adjusting the resistance of the first adjustable resistor module 2 by dialing the dial switch 3.
Specifically, when both C T and R T select the maximum value, the output frequency of the pulse power supply is the minimum; when both C T and R T take minimum values, the output frequency of the pulse power supply is maximum, the pulse modulation range is greatly widened, the resistance value of the adjustable resistance module can be adjusted at any time according to actual needs, the frequency is continuously adjustable, and a foundation is provided for improving the machining precision of electric jet machining and improving the surface quality of a machined workpiece.
The invention provides a pulse width modulator, which comprises an SG3525 chip, a first adjustable resistor module and a dial switch comprising a plurality of gears, wherein: the oscillating capacitor end of the SG3525 chip is connected with the first end of the dial switch, the second end of the dial switch is connected with the first constant value capacitor, and the oscillating resistor end of the SG3525 chip is connected with the control end of the first adjustable resistor module; the SG3525 chip is used for adjusting the resistance value of the oscillating resistor end connecting resistor through adjusting the first adjustable resistor module, and is also used for adjusting the capacitance value of the oscillating capacitor end connecting through adjusting the gear of the dial switch so as to adjust the output frequency of the pulse power supply.
Therefore, in practical application, the pulse width modulator comprising the SG3525 chip and the peripheral circuit thereof provided by the invention is used for changing the capacitance value accessed by the oscillation capacitance end and adjusting the resistance value of the adjustable resistance module by selecting different capacitance gears through the dial switch to jointly adjust the output frequency of the pulse power supply, so that the modulation range of the pulse width modulator on the output frequency of the power supply is widened, the resistance value of the adjustable resistance module can be adjusted at any time according to practical requirements, the requirement of continuously adjusting the output frequency of the pulse power supply is met, and a foundation is provided for improving the processing precision of electric jet processing and improving the surface quality of a processed workpiece.
Referring to fig. 2, fig. 2 is a schematic diagram of another internal structure of a pulse width modulator according to the present invention, where the pulse width modulator is based on the above embodiments:
as a preferred embodiment, the first adjustable resistor module 2 includes a first potentiometer and a power module, wherein a first end of the first potentiometer is connected to ground, a second end of the first potentiometer is connected to the power module, and a control end of the first potentiometer is used as a control end of the first adjustable resistor module 2.
Specifically, the first adjustable resistor module 2 comprises a first potentiometer and a power supply module, and the potentiometer is more convenient to adjust, and the accuracy is higher, so that the pulse width controller provided by the invention is faster in response speed and higher in response accuracy.
Of course, the first adjustable resistor module 2 may include other components besides the first potentiometer and the power module, and the present invention is not limited herein.
As a preferred embodiment, the first adjustable resistor module 2 further comprises a first constant resistor, wherein a first end of the first constant resistor is connected to the control end of the first potentiometer, and a second end of the first constant resistor is used as the control end of the first adjustable resistor module 2.
Specifically, the first adjustable resistor module 2 includes a first potentiometer, a power module and a first constant resistor, and the control end of the first potentiometer is connected in series with the first constant resistor, so that voltage division can be performed, and the situation that the first potentiometer heats seriously, the service life of the first potentiometer is influenced, and the accuracy of adjusting the output frequency of the pulse power supply is influenced due to overhigh resistance on the first potentiometer is avoided.
Of course, the first adjustable resistor module 2 may include other components besides the first potentiometer, the power module and the first constant resistor, and the invention is not limited herein.
As a preferred embodiment, the pulse width modulator further comprises a second adjustable resistor module, wherein a control end of the second adjustable resistor module is connected with the non-inverting input end of the SG3525 chip 1, and the SG3525 chip 1 is further used for changing the reference voltage of the non-inverting input end of the SG3525 chip 1 by adjusting the resistance value of the second adjustable resistor module so as to change the duty ratio of the output voltage.
Specifically, the duty cycle of SG3525 is automatically adjusted by comparing the output feedback voltage with the reference pin voltage. And a second adjustable resistor module is connected between the non-inverting input end and the reference voltage end of the SG3525 chip 1, the reference voltage (namely the reference pin voltage) of the non-inverting input end of the error amplifier is changed by adjusting the resistance value of the second adjustable resistor module, the inverting input end of the error amplifier is connected with the compensation signal input end to form a follower (namely the output feedback voltage), and the duty ratio is automatically adjusted by comparing the reference pin voltage with the output feedback voltage.
Specifically, the resistance of the second adjustable resistor module is increased, the reference pin voltage is increased, the time for outputting feedback voltage to rise to the reference pin voltage is increased, the duty ratio of pulse power supply output is increased, the energy of pulse power supply output is increased, and the processing efficiency is increased.
Specifically, in the process of adjusting the duty ratio, only the resistance value of the second adjustable resistor module is changed, and the values of R T and C T are not changed, so that the output frequency of the pulse power supply is not affected.
As a preferred embodiment, the second adjustable resistor module comprises a second potentiometer, wherein a first end of the second potentiometer is connected with ground, a second end of the second potentiometer is connected with a reference voltage end of the SG3525 chip 1, and a control end of the second potentiometer is used as a control end of the second adjustable resistor module.
Specifically, the second adjustable resistor module comprises a second potentiometer, and the potentiometer is more convenient to adjust, and the accuracy is higher, so that the automatic adjusting speed of the pulse width controller is higher, and the processing efficiency is further improved.
Of course, the second adjustable resistor module may include other components besides the first potentiometer, and the present invention is not limited herein.
As a preferred embodiment, the second adjustable resistor module further comprises a second constant resistor, wherein a first end of the second constant resistor is connected to the control end of the second potentiometer, and a second end of the second constant resistor is used as the control end of the second adjustable resistor module.
Specifically, the second adjustable resistor module comprises a second potentiometer and a second constant resistor, and the second constant resistor is connected in series with the control end of the second potentiometer, so that voltage division can be performed on one hand, the situation that the second potentiometer heats seriously due to overhigh resistor on the second potentiometer, the service life of the second potentiometer is influenced, and then the energy output by the pulse power supply is influenced is avoided.
Of course, the second adjustable resistor module may include other components besides the second potentiometer and the second constant resistor, and the invention is not limited herein.
As a preferred embodiment, SG3525 chip 1 is also used to adjust the capacitance value of the oscillating capacitance terminal connection by adjusting the shift position of dial switch 3 to change the dead time.
Specifically, the internal constant current source charges the oscillating capacitor terminal, the voltage V C of the oscillating capacitor terminal rises linearly to form the rising edge of the sawtooth wave, when V C＝VH, the comparator acts, the charging process is finished, the rising time is the time of charging the oscillating capacitor terminal, recorded as t 1, the discharging circuit is switched on when the comparator acts, the oscillating capacitor terminal discharges, V C descends and forms the falling edge of the sawtooth wave, when V C＝VL, the comparator acts, the discharging process is finished, one working cycle is completed, the discharging time of the oscillating capacitor terminal is recorded as t 2,t2＝3RDCT, the capacitance value of the oscillating capacitor terminal is changed by changing the gear of the dial switch 3, and therefore the dead time is changed, and the improvement of the distortion rate of the duty ratio and the output waveform of the power supply is facilitated.
As a preferred embodiment, the shift position of the dial switch 3 includes any two or a combination of the 0.001pF range, the 0.01pF range, or the 0.1pF range.
Specifically, the first end of the dial switch 3 is connected with a fixed value capacitor, the second end is connected with the oscillating capacitor end of the SG3525 chip 1, and the actual accessed capacitor of the oscillating capacitor end of the SG3525 chip 1 can be changed by selecting a gear on the dial switch 3.
Specifically, when the first end of the dial switch 3 is connected with the fixed value capacitor of 5F, when the gear of the dial switch 3 is at the 0.001pF gear, the actual capacitance of the oscillating capacitor end of the SG3525 chip 1 is 0.005pF, and when the gear of the dial switch 3 is at the 0.01pF gear, the actual capacitance of the oscillating capacitor end of the SG3525 chip 1 is 0.05pF, so that the frequency range can be dynamically adjusted well by adjusting the gear of the dial switch 3, and the pulse width modulation range is enlarged.
Of course, the gear combination of the dial switch 3 may be other manners, and the present invention is not limited herein.
In order to solve the technical problem, the invention also provides a pulse power supply, which comprises the pulse width modulator.
For the description of the pulse power supply provided by the present invention, refer to the above embodiment, and the description of the present invention is omitted herein.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant points refer to the description of the method section.
It should also be noted that in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (2)
1. The utility model provides a pulse width modulator, its characterized in that includes SG3525 chip, first adjustable resistance module, contains dial switch and the first definite value electric capacity of a plurality of gears, wherein:
The oscillating capacitor end of the SG3525 chip is connected with the first end of the dial switch, the second end of the dial switch is connected with the first constant value capacitor, and the oscillating resistor end of the SG3525 chip is connected with the control end of the first adjustable resistor module;
The SG3525 chip is used for adjusting the resistance value of the oscillating resistor end connecting resistor through adjusting the first adjustable resistor module, and is also used for adjusting the capacitance value of the oscillating capacitor end connecting through adjusting the gear of the dial switch so as to adjust the output frequency of the pulse power supply;
The gear of the dial switch comprises any two or the whole combination of 0.001pF gear, 0.01pF gear or 0.1pF gear;
The SG3525 chip is further used for adjusting the capacitance value connected with the oscillating capacitor end through adjusting the gear of the dial switch so as to change dead time, wherein the dead time is t 2＝3RDCT;
Wherein C T is the capacitance value of the oscillation capacitance end connection;
the first adjustable resistor module comprises a first potentiometer and a power supply module, wherein a first end of the first potentiometer is connected with the ground, a second end of the first potentiometer is connected with the power supply module, and a control end of the first potentiometer is used as a control end of the first adjustable resistor module;
The first adjustable resistor module further comprises a first fixed value resistor, wherein a first end of the first fixed value resistor is connected with the control end of the first potentiometer, and a second end of the first fixed value resistor is used as the control end of the first adjustable resistor module;
the pulse width modulator further comprises a second adjustable resistor module, wherein the control end of the second adjustable resistor module is connected with the non-inverting input end of the SG3525 chip, and the SG3525 chip is further used for changing the reference voltage of the non-inverting input end of the SG3525 chip by adjusting the resistance value of the second adjustable resistor module so as to change the duty ratio of the output voltage;
The second adjustable resistor module comprises a second potentiometer, wherein the first end of the second potentiometer is connected with the ground, the second end of the second potentiometer is connected with the reference voltage end of the SG3525 chip, and the control end of the second potentiometer is used as the control end of the second adjustable resistor module;
The second adjustable resistor module further comprises a second constant value resistor, wherein a first end of the second constant value resistor is connected with the control end of the second potentiometer, and a second end of the second constant value resistor is used as the control end of the second adjustable resistor module.
2. A pulsed power supply comprising a pulse width modulator according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710742330.1A CN107332458B (en) | 2017-08-25 | 2017-08-25 | Pulse width modulator and pulse power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710742330.1A CN107332458B (en) | 2017-08-25 | 2017-08-25 | Pulse width modulator and pulse power supply |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107332458A CN107332458A (en) | 2017-11-07 |
| CN107332458B true CN107332458B (en) | 2024-06-07 |
Family
ID=60227954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710742330.1A Active CN107332458B (en) | 2017-08-25 | 2017-08-25 | Pulse width modulator and pulse power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107332458B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110123168B (en) * | 2019-05-31 | 2021-03-16 | 厦门芯阳科技股份有限公司 | Multi-gear toggle switch and circuit thereof, and multi-gear identification circuit and device |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5767744A (en) * | 1995-11-22 | 1998-06-16 | Qsc Audio Products, Inc. | Lightweight fixed frequency discontinuous resonant power supply for audio amplifiers |
| CN101431301A (en) * | 2007-10-17 | 2009-05-13 | 北京中科信电子装备有限公司 | SG3525 application in ion implanter switch power supply |
| CN201450449U (en) * | 2009-04-03 | 2010-05-05 | 东南大学 | Voltage frequency device capable of being adjusted in broad width |
| CN101882909A (en) * | 2009-05-08 | 2010-11-10 | 深圳迈瑞生物医疗电子股份有限公司 | Circuit for implementing voltage-controlled oscillator with dead zone and resonant power supply |
| CN204068897U (en) * | 2014-05-30 | 2014-12-31 | 浙江西子富沃德电机有限公司 | Pulse signal generation circuit |
| CN105099403A (en) * | 2015-08-28 | 2015-11-25 | 周致 | Voice signal generator capable of adjusting pulse waveforms |
| CN106556785A (en) * | 2015-09-29 | 2017-04-05 | 李福霞 | A kind of hardware circuit of insulation apparatus along face detection means |
| CN206117269U (en) * | 2016-10-21 | 2017-04-19 | 广州市君盘实业股份有限公司 | Numerical control dynamic output charger based on SG3525 chip |
| CN207339684U (en) * | 2017-08-25 | 2018-05-08 | 广东工业大学 | A kind of pulse width modulator and the pulse power |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005210759A (en) * | 2004-01-19 | 2005-08-04 | Sanken Electric Co Ltd | Resonance type switching power supply apparatus |
-
2017
- 2017-08-25 CN CN201710742330.1A patent/CN107332458B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5767744A (en) * | 1995-11-22 | 1998-06-16 | Qsc Audio Products, Inc. | Lightweight fixed frequency discontinuous resonant power supply for audio amplifiers |
| CN101431301A (en) * | 2007-10-17 | 2009-05-13 | 北京中科信电子装备有限公司 | SG3525 application in ion implanter switch power supply |
| CN201450449U (en) * | 2009-04-03 | 2010-05-05 | 东南大学 | Voltage frequency device capable of being adjusted in broad width |
| CN101882909A (en) * | 2009-05-08 | 2010-11-10 | 深圳迈瑞生物医疗电子股份有限公司 | Circuit for implementing voltage-controlled oscillator with dead zone and resonant power supply |
| CN204068897U (en) * | 2014-05-30 | 2014-12-31 | 浙江西子富沃德电机有限公司 | Pulse signal generation circuit |
| CN105099403A (en) * | 2015-08-28 | 2015-11-25 | 周致 | Voice signal generator capable of adjusting pulse waveforms |
| CN106556785A (en) * | 2015-09-29 | 2017-04-05 | 李福霞 | A kind of hardware circuit of insulation apparatus along face detection means |
| CN206117269U (en) * | 2016-10-21 | 2017-04-19 | 广州市君盘实业股份有限公司 | Numerical control dynamic output charger based on SG3525 chip |
| CN207339684U (en) * | 2017-08-25 | 2018-05-08 | 广东工业大学 | A kind of pulse width modulator and the pulse power |
Non-Patent Citations (1)
| Title |
|---|
| 张凤言编著.《电子电路基础 高性能模拟电路和电流模技术 第2版》.北京：高等教育出版社 ,1986,第607-608页. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107332458A (en) | 2017-11-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104063003B (en) | A kind of low-power consumption of integrated slew rate enhancing circuit is without the outer electric capacity LDO of sheet | |
| CN106787652B (en) | A kind of dynamic suitable for buck converter output DC maladjustment eliminates circuit | |
| CN109494990A (en) | A method of load transient response speed is improved using the variable Boost DC-DC of changeable frequency and mutual conductance | |
| CN101356718A (en) | Comparator type DC-DC converter | |
| KR20080046113A (en) | Voltage rising/falling type switching regulator and operation control method thereof | |
| CN105356746A (en) | Conduction time generation circuit for power supply converter, and power supply converter | |
| CN103066954B (en) | Ramp signal generation circuit and ramp signal adjustment circuit | |
| CN104852577A (en) | Step-down DC converter | |
| CN107332458B (en) | Pulse width modulator and pulse power supply | |
| CN105027406B (en) | Impulse density D/A converter with slope-compensation function | |
| CN204993057U (en) | Step -down direct current transducer | |
| CN102684615A (en) | Driving device achieving ideal power up and power down timing sequence of power amplifier | |
| CN102751858B (en) | Soft starting circuit for voltage regulator | |
| CN115360918A (en) | Primary side sampling resistor-based constant current control system, method and medium of primary side feedback flyback converter | |
| JP2010081749A (en) | Circuit and method for controlling dc-dc converter | |
| CN111786556A (en) | Dual-mode compensation system for peak current control mode boost converter | |
| CN215452792U (en) | Digitally controlled low-power linear adjustable power supply | |
| CN205921567U (en) | Sawtooth wave generating circuit | |
| CN108429455A (en) | A kind of voltage conversion circuit and terminal device of power supply | |
| CN207339684U (en) | A kind of pulse width modulator and the pulse power | |
| CN210807074U (en) | Voltage regulating circuit of photoelectric detector | |
| CN210605501U (en) | Voltage closed-loop control circuit | |
| CN209844841U (en) | Microwave switch negative bias voltage generating circuit | |
| CN108539972B (en) | Boost converter circuit with memristive load | |
| CN206389280U (en) | Reverse booster circuit based on reverse DC/DC controllers |
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 | ||
| GR01 | Patent grant |