CN102436281B - System and method for pulse power supply control - Google Patents
System and method for pulse power supply control Download PDFInfo
- Publication number
- CN102436281B CN102436281B CN201110344829XA CN201110344829A CN102436281B CN 102436281 B CN102436281 B CN 102436281B CN 201110344829X A CN201110344829X A CN 201110344829XA CN 201110344829 A CN201110344829 A CN 201110344829A CN 102436281 B CN102436281 B CN 102436281B
- Authority
- CN
- China
- Prior art keywords
- current
- pulse
- control
- comparator
- sampling
- 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.)
- Expired - Fee Related
Links
- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000005070 sampling Methods 0.000 claims abstract description 45
- 239000003990 capacitor Substances 0.000 claims description 9
- 230000001105 regulatory effect Effects 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 6
- 230000000740 bleeding effect Effects 0.000 claims description 5
- 230000001276 controlling effect Effects 0.000 claims description 5
- 230000004913 activation Effects 0.000 claims 1
- 238000007747 plating Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000009713 electroplating Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 229910021645 metal ion Inorganic materials 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Images
Landscapes
- Dc-Dc Converters (AREA)
Abstract
The invention discloses a system and a method for pulse power supply control. The system comprises an upward-pull comparator and a control output device. The upward-pull comparator is used for comparing current to be adjusted of a pulse power supply with external set current, a comparison signal output by the upward-pull comparator serves as a sampling/keeping device of input sources, and the sampling/keeping device performs peak value sampling or peak value keeping on pulse current under control of sampling pulse. The control output device is connected with the output end of the sampling/keeping device, and achieves constant-current control on the pulse current under control of the output end of the sampling/keeping device. The system and the method for pulse power supply control compare the external set current with the current to be adjusted, and then adjust output amplitude of the pulse and perform constant-current control on the pulse, thereby enabling the current finally provided for processing parts to accord with the set value better and to be more stable.
Description
Technical Field
The invention relates to the technical field of pulse power supplies, in particular to a pulse power supply control system and method.
Background
The pulse (peak value) power supply includes single positive pulse, double positive and negative pulse power supply, and adopts unique modulation technology and digital control. The positive pulse on-width (T +) and the negative pulse on-time width (T-) are separately adjustable over the full period. The positive current, the voltage regulation, the negative current and the voltage can be independently regulated. Can meet different requirements of customers. The coating is suitable for gold plating, silver plating, nickel plating, tin plating and the like, and can obviously improve the performance of the coating; when used for protective-decorative electroplating (such as decorative gold), the plating layer has uniform color, good brightness and strong corrosion resistance. In particular, the concentration of metal ions on the surface of the cathode is quickly increased by the anodic dissolution of the reverse pulse of the double-pulse power supply, which is beneficial to the use of high pulse current density in the subsequent cathode period, so that the coating is compact and bright and has low porosity; the anode stripping of the reverse pulse of the double-pulse power supply greatly reduces the entrapment of organic impurities (containing brightener) in the plating layer, so that the plating layer has high purity and strong tarnish resistance. The double-pulse power supply is a novel power supply, and the application field of the switching power supply is wider due to reasonable processing of high-frequency pulses and low-frequency pulses.
In the pulse electroplating process of the pulse power supply, when the current is conducted, the pulse current is several times or even dozens of times of the common direct current, and the instantaneous high current density enables metal ions to be reduced under extremely high overpotential, so that deposited layer grains are thinned; when the current is cut off, the discharge ions near the cathode region are restored to the initial concentration again, the concentration polarization is eliminated, high pulse (peak value) current density is continuously used in the next pulse period, and meanwhile, the phenomena of recrystallization, adsorption and desorption and the like which are favorable for a deposition layer are accompanied in the cut-off period. Such a process is synchronized throughout the entire electroplating process, and the mechanisms involved therein constitute the most fundamental principles of pulse plating. Practice proves that the pulse power supply has incomparable advantages over the traditional direct current plating in the aspects of refining crystallization, improving physical and chemical properties of a plating layer, saving precious metals and the like.
Firstly, the primary energy source has enough energy through slow energy storage; the energy is then charged (or streamed in) to the intermediate energy storage and pulse shaping system, and after some complex processes of storage, compression, pulse formation or conversion, the energy is finally rapidly discharged to the load.
The research directions of the pulse power supply mainly include:
increasing pulse repetition frequency. By increasing the repetition frequency of the pulse, the average power of the pulse power supply is increased, the size of the power supply is reduced, and the manufacturing cost is reduced.
Secondly, the efficiency of the power supply is improved, and the self energy consumption of the power supply is reduced.
And the reliability of the power supply system is improved, and the pulse discharge heat generation and the high-frequency electromagnetic interference cause serious influence on the reliability of the system.
In view of the above 3 rd research direction, the applicant finds that, in the actual working process, the conventional pulse power supply is operated in a constant voltage state or an average value constant current state, and in this working mode, the change of the load condition causes the change of the pulse peak current, thereby affecting the processing quality of the processed workpiece.
Disclosure of Invention
The embodiment of the invention provides a pulse power supply control system and method, which improve the reliability of a power supply system by stabilizing the output of a pulse power supply.
Therefore, the embodiment of the invention adopts the following technical scheme:
a pulsed power supply control system comprising: the pull-up comparator is used for comparing the current to be regulated of the pulse power supply with an external set current; a sample/holder which takes a comparison signal output by the pull-up comparator as an input source and carries out peak value sampling or peak value holding on pulse current under the control of sampling pulses; and the control output device is connected with the output of the sampling/holding device and realizes constant current control on the pulse current under the control of the output of the sampling/holding device.
Preferably, the system further comprises an amplifier for amplifying the current to be regulated of the pulsed power supply, the output of the amplifier being the input of the pull-up comparator.
Preferably, the system further comprises a display controller, wherein the display controller takes the output of the amplifier as input under the control of the sampling pulse, and outputs and displays the output after constant current control.
Preferably, the system further comprises a current-limiting filter circuit, and the comparison signal output by the comparator is processed by the current-limiting filter circuit and then is connected to the input end of the sample/holder.
Preferably, the system further comprises a bleeding comparator for discharging a filter capacitor of the current-limiting filter circuit under the control of the sampling pulse.
Preferably, the system further comprises a comparison controller which controls the start of the pull-up comparator or the bleed-off comparator by comparing the sampling pulse with an external set current.
A pulse power supply control method comprises the following steps: comparing the current to be adjusted of the pulse power supply with an external set current through a pull-up comparator; taking a comparison signal output by the pull-up comparator as an input source of a sample/holder, wherein the sample/holder performs peak sampling or peak holding on pulse current under the control of sampling pulses; the sample/holder output is provided to a control follower which effects constant current control of the pulsed current under control of the sample/holder output.
Wherein, before the comparison of the pull-up comparator, the method further comprises: and amplifying the current to be adjusted of the pulse power supply through an amplifier, and taking the output of the amplifier as one input of the pull-up comparator.
Wherein, the method also comprises: and the output of the amplifier is subjected to constant current control under the control of sampling pulses through a display controller and then is output and displayed.
The comparison signal output by the comparator is connected to the input end of the sampling/holding device after being processed by the current-limiting filter circuit.
Wherein the method further comprises: and discharging the filter capacitor through a bleeding comparator.
Wherein, the method also comprises: and comparing the sampling pulse with an external set power supply through a comparison controller, and controlling the start of the pull-up comparator or the discharge comparator.
Therefore, the invention compares the external set current with the current to be adjusted, then adjusts the output amplitude of the current, and performs constant current control, so that the current finally provided for the workpiece is more consistent with the set value and more stable.
Drawings
FIG. 1 is a schematic diagram of a pulse power control system according to a first embodiment of the present invention;
FIG. 2 is a diagram of a pulse power control system according to a second embodiment of the present invention;
FIG. 3 is a schematic diagram of a sample/hold unit of the pulse power control system of the present invention;
FIG. 4 is a flowchart of a pulse power control method according to the present invention.
Detailed Description
The following describes embodiments of the present invention in detail with reference to the accompanying drawings.
Referring to fig. 1, a schematic diagram of a pulse power control system according to a first embodiment of the present invention is shown. The system includes a pull-up comparator 101, a sample/holder 102, and a control outputter 103. In summary, the pulse power supply control system of the present invention compares the current to be adjusted with the external set current through the pull-up comparator 101, takes the comparison signal output by the pull-up comparator 101 as the input of the sample/holder 102, and the sample/holder 102 performs peak sampling or peak holding operation under the control of the sampling pulse; finally, the output of the sample/holder 102 is transmitted to the control outputter 103, and the control outputter 103 performs constant current control on the current to be adjusted under the output control of the sample/holder 102, and finally outputs a constant and stable pulse current to the workpiece.
The connection relationship and functions of each device in the system of fig. 1 are as follows:
the pull-up comparator 101 is used for comparing the current to be adjusted of the pulse power supply with the external set current, two input sources of the pull-up comparator are the current to be adjusted and the external set current respectively, and the output of the pull-up comparator is a comparison signal.
The sample/hold unit 102 samples the peak value or holds the peak value of the pulse current under the control of the sampling pulse, using the comparison signal output from the pull-up comparator 101 as an input source.
The control outputter 103 realizes constant current control of the current to be regulated under the control of the output of the sample/holder 102.
Therefore, the invention compares the external set current with the current to be adjusted, then adjusts the output amplitude of the pulse, and performs constant current control, so that the current finally provided for the workpiece is more consistent with the set value and more stable.
Referring to fig. 2, a schematic diagram of a pulse power control system according to a second embodiment of the present invention is shown. The second embodiment is added with an amplifier 104, a display controller 105, a comparison controller 106, a current limiting filter circuit 107, and a bleeding comparator 108 on the basis of the first embodiment.
Wherein,
and an amplifier 104 for amplifying the current to be regulated of the pulse power supply, wherein the output of the amplifier is used as the input of the pull-up comparator 101. In addition, before amplifying the current to be adjusted of the pulse power supply, filtering processing can be carried out on the current to be adjusted.
The display controller 105 is controlled by the sampling pulse, and outputs the output of the amplifier 104 as an input, and outputs a display after constant current control.
As can be understood by those skilled in the art, the amplifier 104 amplifies the current to be adjusted, and compares the amplified current as one input of the pull-up comparator 101 with the external setting current of the other input, so that the comparison result is more accurate. For example, the current to be adjusted is 0.5A, which is amplified by 4 times and then becomes 2A, which is used as one input of the pull-up comparator 101. In addition, the current to be adjusted is amplified and then simultaneously supplied to the display controller 105, so that the pulse power supply is converted into a direct current signal with the same amplitude, and finally the pulse peak current is displayed through a digital meter and the like.
A comparison controller 106 for controlling the pull-up comparator 101 and the bleed-off comparator 108 to be turned on or off by comparing the external set current with the sampling pulse, for example, when the sampling pulse is at a high level, the pull-up comparator 101 is turned on, and the bleed-off comparator 108 is turned off; when the sampling pulse is low, the bleeder comparator 108 is turned on and the pull-up comparator 101 is turned off.
In addition, between pull-up comparator 101 and sample/holder 102, current-limiting filter circuit 107 may be accessed, thereby ensuring that the input provided to sample/holder 102 is more accurate. It will be appreciated by those skilled in the art that the sample/hold circuit 103 can sample on the fly when the output of the pull-up comparator 101 is higher than the sample/hold circuit 103 input, but the sample/hold circuit 103 input will not drop as quickly as the output of the pull-up comparator 101 decreases due to the current limiting filter circuit 107 when the output of the pull-up comparator 101 is lower than the sample/hold circuit 103 input, thereby making the overall sampling function less responsive. In order to solve the problem, a bleeder comparator 108 is added for discharging the filter capacitor of the current-limiting filter circuit 107 under the control of the comparison controller 106, so as to ensure that the input end of the sample/holder 103 is rapidly pulled down through the discharging operation of the filter capacitor when the output of the pull-up comparator 101 is lower than the input of the sample/holder 103, thereby ensuring that the whole sampling function reacts sensitively.
Referring to fig. 3, a schematic diagram of a sample/hold unit of the pulse power control system of the present invention is shown. U2 is a sample/hold circuit 103, U3B is a pull-up comparator 102, and a diode D3, a resistor R6, a capacitor C3, and a capacitor C4 form a current-limiting filter circuit 106. TP2 (amplified current to be adjusted) and TP5 (external set current) are used as two paths of input of U3B, comparison signals are obtained after comparison of U3B, the comparison signals are rectified by a diode D3 and limited by a resistor R6, and direct current signals after passing through C3 and C4 are sent to the 3 rd pin of the input end of U2. The sampling pulse TP7 is connected to the control pin 8 of the U2 through the resistor R7, when the control pin 8 is at a high level, the U2 operates in a sampling state, and when the control pin 8 is at a low level, the U2 operates in a holding state, and since the loop impedance is large, the holding function is strong. U2 outputs a pickup signal TP4, which is supplied to control output 103 (not shown in fig. 3) for controlling the power delivery outflow. In addition, the output of the bleed comparator 108 described above is connected to TP3 (not shown in fig. 3) to discharge C4.
In addition to the above-described pulse power control system, the present invention also provides a pulse power control method. Referring to fig. 4, the method includes the steps of:
s401: the current to be adjusted of the pulse power supply is amplified by an amplifier, and then S402 and S403 are performed.
S402: and the output of the amplifier is subjected to constant current control under the control of sampling pulses through a display controller and then is output and displayed.
S403: comparing the output of the amplifier (the amplified current to be adjusted) with the external set current through a comparator to obtain a comparison signal; s404 is executed simultaneously with S403: comparing the sampling pulse with an external set power supply through a comparison controller, and controlling the pull-up comparator to be started or closed; s403 is followed by S405.
S405: carrying out current-limiting filtering processing on a comparison signal output by the pull-up comparator through a current-limiting filtering circuit; s406 is executed concurrently with the execution of S405: the bleeding comparator discharges the filter capacitor under the control of the comparison controller; s407 is then executed after S405.
S407: the signal processed by the current-limiting filter circuit is connected to the input end of the sample/hold unit for sample/hold processing, and then S408 is executed
S408: the sample/holder output is supplied to a control outputter which, under the control of the sample/holder output, performs constant current control of the pulse current, thereby ensuring that the current ultimately supplied to the external workpiece is closer to the set value.
It should be noted that, the above steps are only steps that are necessary to be executed in S403, S407, and S408, and the remaining steps may be selectively executed, which may be described in conjunction with fig. 1.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (8)
1. A pulsed power control system, comprising:
the pull-up comparator is used for comparing the current to be regulated of the pulse power supply with an external set current;
a sample/holder which takes a comparison signal output by the pull-up comparator as an input source and carries out peak value sampling or peak value holding on pulse current under the control of sampling pulses;
the control output device is connected with the output of the sampling/holding device and realizes constant current control on the pulse current under the control of the output of the sampling/holding device;
the system also comprises a current-limiting filter circuit, and a comparison signal output by the comparator is connected to the input end of the sampling/holding device after being processed by the current-limiting filter circuit;
the system also comprises a leakage comparator for discharging the filter capacitor of the current-limiting filter circuit.
2. A pulsed power supply control system according to claim 1, characterized in that the system further comprises an amplifier for amplifying the current to be regulated of the pulsed power supply, the output of the amplifier being the input of the pull-up comparator.
3. The pulse power supply control system according to claim 2, further comprising a display controller which is controlled by the sampling pulse, takes the output of the amplifier as an input, and outputs a display after constant current control.
4. The pulse power control system according to claim 1, further comprising a comparison controller that controls activation of the pull-up comparator or the bleed-off comparator by comparing a sampling pulse with an external set current.
5. A pulse power supply control method is characterized by comprising the following steps:
comparing the current to be adjusted of the pulse power supply with an external set current through a pull-up comparator;
taking a comparison signal output by the pull-up comparator as an input source of a sample/holder, wherein the sample/holder performs peak sampling or peak holding on pulse current under the control of sampling pulses;
providing the output of the sampling/holding device to a control outputter, wherein the control outputter realizes constant current control on pulse current under the control of the output of the sampling/holding device;
the comparison signal output by the comparator is processed by a current-limiting filter circuit and then is connected to the input end of the sampling/holding device;
the method further comprises the following steps: and discharging the filter capacitor through a bleeding comparator.
6. The method of claim 5, wherein prior to the pull-up comparator comparing, the method further comprises: and amplifying the current to be adjusted of the pulse power supply through an amplifier, and taking the output of the amplifier as one input of the pull-up comparator.
7. The pulse power supply control method according to claim 6, characterized by further comprising: and the output of the amplifier is subjected to constant current control under the control of sampling pulses through a display controller and then is output and displayed.
8. The pulse power supply control method according to claim 5, characterized by further comprising: and comparing the sampling pulse with an external set power supply through a comparison controller, and controlling the start of the pull-up comparator or the discharge comparator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110344829XA CN102436281B (en) | 2011-11-04 | 2011-11-04 | System and method for pulse power supply control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110344829XA CN102436281B (en) | 2011-11-04 | 2011-11-04 | System and method for pulse power supply control |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102436281A CN102436281A (en) | 2012-05-02 |
| CN102436281B true CN102436281B (en) | 2013-12-04 |
Family
ID=45984383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110344829XA Expired - Fee Related CN102436281B (en) | 2011-11-04 | 2011-11-04 | System and method for pulse power supply control |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102436281B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE112012007192B4 (en) | 2012-12-03 | 2022-08-25 | Toyota Jidosha Kabushiki Kaisha | electricity storage system |
| JP5673657B2 (en) | 2012-12-03 | 2015-02-18 | トヨタ自動車株式会社 | Power storage system |
| JP5673658B2 (en) | 2012-12-03 | 2015-02-18 | トヨタ自動車株式会社 | Power storage system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3083111B2 (en) * | 1991-10-08 | 2000-09-04 | キヤノン株式会社 | Optical data pulse train generation method |
| CN2545218Y (en) * | 2002-02-23 | 2003-04-16 | 郭秋丰 | Current waveform and electricity controller for electroplating |
| CN1921976A (en) * | 2004-04-19 | 2007-02-28 | 三菱电机株式会社 | Discharge processing machine power supply apparatus and power supply control method |
| CN101800484A (en) * | 2010-03-17 | 2010-08-11 | 北京华浩森科技发展有限责任公司 | Pulse accuracy control circuit for pulse power supply |
| CN202548688U (en) * | 2011-11-04 | 2012-11-21 | 崔建勋 | Pulse power source control system |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6218971A (en) * | 1985-07-17 | 1987-01-27 | Origin Electric Co Ltd | Pulse power source |
| JP2900416B2 (en) * | 1989-08-28 | 1999-06-02 | 株式会社島津製作所 | Ultrasound diagnostic equipment |
-
2011
- 2011-11-04 CN CN201110344829XA patent/CN102436281B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3083111B2 (en) * | 1991-10-08 | 2000-09-04 | キヤノン株式会社 | Optical data pulse train generation method |
| CN2545218Y (en) * | 2002-02-23 | 2003-04-16 | 郭秋丰 | Current waveform and electricity controller for electroplating |
| CN1921976A (en) * | 2004-04-19 | 2007-02-28 | 三菱电机株式会社 | Discharge processing machine power supply apparatus and power supply control method |
| CN101800484A (en) * | 2010-03-17 | 2010-08-11 | 北京华浩森科技发展有限责任公司 | Pulse accuracy control circuit for pulse power supply |
| CN202548688U (en) * | 2011-11-04 | 2012-11-21 | 崔建勋 | Pulse power source control system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102436281A (en) | 2012-05-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202548688U (en) | Pulse power source control system | |
| CN102436281B (en) | System and method for pulse power supply control | |
| CN104357883B (en) | A kind of without cyanogen electroforming gold solution and electroforming gold method | |
| CN102851704B (en) | Aluminum cell supplying device single-point controls baiting method | |
| CN110016700B (en) | Surface-enhanced Raman spectrum silver-plated active substrate and preparation method thereof | |
| CN103255452A (en) | Selective metal electro-deposition device and application thereof | |
| CN101914801B (en) | Anodic phosphorous copper balls and preparation method thereof | |
| EP1739208A4 (en) | Electrode for hydrogen generation, process for producing the same and method of electrolysis therewith | |
| CN106245069A (en) | A kind of preparation method of the quick electronickelling steel band for battery case | |
| WO2005064043A3 (en) | Improved metal strip electroplating | |
| CN101551352A (en) | Device and method for detecting whether etch holes appear on aluminum anode oxide diaphragm or not | |
| CN110129839B (en) | Preparation method of copper plating brightener | |
| CN206359652U (en) | De-plating device | |
| CN110453263B (en) | Aluminum alloy mirror surface anodic oxidation method | |
| CN112877746A (en) | Method for preparing high-purity lutetium aluminum garnet precursor | |
| CN208701245U (en) | A kind of electrobrightening corrosion tester control system | |
| CN106947991B (en) | A kind of preparation method of aluminum alloy surface wear-and corrosion-resistant anti-thermal shock coating | |
| CN103436925A (en) | Method for improving room-temperature plasticity of amorphous alloy | |
| CN202230324U (en) | Trigger impulse controller for positive-negative asymmetry microarc oxidation power supply | |
| WO2007092398A3 (en) | Method for electrolytic production of titanium and other metal powders | |
| CN205195592U (en) | High -voltage pulse power supply | |
| TWI689636B (en) | Method for producing single crystal metal | |
| CN203346510U (en) | Paralleling-type multi-head electrolytic polishing gun | |
| CN202246838U (en) | Vacuum coating machine | |
| CN104582314A (en) | Non-adhesive technology of gold plating finger OSP process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20120502 Assignee: FLANCE (BEIJING) NANOTECHNOLOGY Co.,Ltd. Assignor: Cui Jianxun Contract record no.: 2016990000267 Denomination of invention: System and method for pulse power supply control Granted publication date: 20131204 License type: Exclusive License Record date: 20160705 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131204 Termination date: 20211104 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |