CN100550567C - Power supply circuits module and fixed current power output control system - Google Patents
Power supply circuits module and fixed current power output control system Download PDFInfo
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- CN100550567C CN100550567C CNB200710007056XA CN200710007056A CN100550567C CN 100550567 C CN100550567 C CN 100550567C CN B200710007056X A CNB200710007056X A CN B200710007056XA CN 200710007056 A CN200710007056 A CN 200710007056A CN 100550567 C CN100550567 C CN 100550567C
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Abstract
A kind of power supply circuits module with decide the electric current output control system, this electric current output control system receives the predetermined power that an electric power supply unit is sent, and the output power of supplying certain electric current is to a load, this system comprises a plurality of and branch feeding circuit this electric power supply unit electric connection, use and receive this predetermined power is exported a plurality of branch currents with correspondence electric power, and the electric power of each branch current is accumulated this decide the output power of electric current and be supplied to this load, when wherein a branch feeding circuit interruption was exported the electric power of this branch current, a master control integrates that control signal can control that this electric power supply unit sends out a redundant power so that this output power maintains this decides to export electric current under.Provided by the present inventionly decide electric current output control system or power supply circuits module and can when part branch feeding fault maybe must cut off maintenance, still output power can be maintained and decide electric current.
Description
Technical field
The invention relates to a kind of electric power output control system, be meant a kind of fixed current power output control system especially.
Background technology
Along with the development and the evolution of the current situation, very important role in the life has played the part of already unconsciously in electronic apparatus device, equipment and system.For these electronic and electrical equipments can normally be operated, the necessary condition that stable supply of electric power is wherein the most indispensable especially.Yet, for specific electronic apparatus device, equipment or system, under specific situation, be not admit of supply of electric power any interruption or unsettled phenomenon are arranged.Especially for the system that carries out testing on burn-in test, the line or controlling in real time,, can cause great negative effect as long as there is the unsettled situation of supply of electric power slightly to take place, the consequence that more leisure opinion supply of electric power interruption is caused.Therefore; on practice utilization aspect; mostly be to utilize an exportable power supply circuits module of deciding electric current to supply above-mentioned carrying out test or the required electric power of real-time control system on burn-in test, the line; in order to supply the electric power of enough deciding electric current, these power supply circuits modules usually can several branch feeding circuit in parallel simultaneously.
In addition, for the above-mentioned system that is carrying out testing on burn-in test, the line or controlling in real time, many power supply circuits are arranged because be in load condition for a long time and must usually carry out routine or provisional maintenance.When these power supply circuits of maintenance, must cut off the wherein power supply circuits of specific quantity unavoidably usually, still, can not therefore have influence on the stable fixed of whole supply of electric power again, this becomes the problem that makes many practitioner's worries.At above-mentioned condition, will enumerate two existing embodiment and be specified.
See also Fig. 1, for showing the Circuits System calcspar of an existing embodiment.As shown in the figure, one power supply circuits module 1 is in electrical communication with an electric power supply unit 2 and a load 3 (can be above-mentioned carrying out test or the real-time system that controls on burn-in test, the line) respectively, this power supply circuits module 1 comprises six branch feeding circuit 11,12,13,14,15 and 16, six branch feeding circuit 11,12,13,14,15 and 16 are connected in parallel to each other, and are in electrical communication with electric power supply unit 2 and load 3 respectively.
When electric power supply unit 2 sent out a predetermined power, six branch feeding circuit 11,12,13,14,15 were distinguished the corresponding electric power of exporting six branch current I1, I2, I3, I4, I5 and I6 with 16.A nearly step of electric power I1, I2, I3, I4, I5 and the I6 of six branch currents accumulates the output power of certain electric current I T and is supplied to this load 3.
Suppose that predetermined power that electric power supply unit 2 is supplied is 100 volts the voltage of deciding, six branch feeding circuit 11,12,13,14,15 and 16 impedance are all 5 ohm, then six branch current I1, I2, I3, I4, I5 and I6 are all 20 amperes, and the electric current I T that decides that is compiled is 120 amperes.
Please continue to consult Fig. 2, be displayed map 1 power supply situation during a branch feeding circuit interruption output power wherein.As shown in the figure, in the power supply process of electric power supply unit 2, in case during one of them branch feeding fault (as branch feeding circuit 15 among the figure), only remaining other five branch feeding circuit 11,12,13,14 can be kept normal operation with 16 and the corresponding respectively electric power of exporting five branch current I1, I2, I3, I4 and I6, and accumulate another and decide the output power of electric current I T ' and be supplied to this load 3.If still follow above hypothesis, that is then compiled decides electric current I T ' with only being left 100 amperes, has obviously lacked 20 amperes than deciding electric current I T, and therefore badly influences the normal operation of load 3.
In order to address the above problem, below will to continue to disclose another existing embodiment and be specified.Consult Fig. 3, for showing the Circuits System calcspar of another existing embodiment.As shown in the figure, another power supply circuits module 1a also is in electrical communication with above-mentioned electric power supply unit 2 and load 3 respectively, and should comprise six branch feeding circuit 11a, 12a, 13a, 14a, 15a and 16a by electricity circuit module 1a, also comprise a redundant branch power supply circuits 17a, a current detecting unit 18a and a processing unit 19a simultaneously.
Six branch feeding circuit 11a, 12a, 13a, 14a, 15a and 16a and redundant branch power supply circuits 17a are connected in parallel to each other, and are in electrical communication with electric power supply unit 2 and load 3 respectively.Switch switch P even between redundant branch power supply circuits 17a and electric power supply unit 2, possess one, and diverter switch P defaults in the open-circuit position and cuts off being communicated with of redundant branch power supply circuits 17a and electric power supply unit 2.Current detecting unit 18a is in electrical communication with six branch feeding circuit 11a, 12a, 13a, 14a, 15a and 16a and redundant branch power supply circuits 17a respectively, and simultaneously, processing unit 19a is in electrical communication with current detecting unit 18a and electric power supply unit 2 respectively.
When electric power supply unit 2 sends out a predetermined power, the electric power of six the corresponding output of branch feeding circuit 11a, 12a, 1 a, 14a, 15a and 16a difference six branch current I1, I2, I3, I4, I5 and I6.A nearly step of electric power I1, I2, I3, I4, I5 and the I6 of six branch currents accumulates above-mentionedly decides the output power of electric current I T and is supplied to this load 3.Simultaneously, current detecting unit 18a can detect six branch current I1, I2, I3, I4, I5 and I6, and sends a detection signal S1 to processing unit 19a.
As six branch feeding circuit 11a, 12a, 13a, 14a, when wherein one (being assumed to be branch feeding circuit 15a) of 15a and 16a are interrupted the electric power of output branch current I5, this processing unit 19a can send a control signal S2 to diverter switch P according to detection signal S1, make diverter switch P switch to closed circuit position and connect redundant branch power supply circuits 17a and electric power supply unit 2, make these redundant branch power supply circuits 17a export the electric power of a redundant branch electric current I 7, and make electric power and other five branch current I1 of redundant branch electric current I 7, I2, I3, the electric power of I4 and I6 accumulates and maintains this and decide the output power of electric current I T and be supplied to this load 3.
Follow above hypothesis, and the impedance of six branch feeding circuit 11a, 12a, 13a, 14a, 15a and 16a and redundant branch power supply circuits 17a is when being all 5 ohm, then equally can maintains 120 amperes of electric power of decide electric current and export.But, but must extra incremental redundancy branch feeding circuit 17a and diverter switch P.
Summary of the invention
Technical problem and purpose that institute of the present invention desire solves:
Take a broad view of the above, in the prior art, have two subject matters respectively.The first can't be kept the problem of deciding electric current output when a branch feeding fault wherein, it two is additionally to set up at least one group of redundant branch power supply circuits and at least one diverter switch.
Therefore, main purpose of the present invention provides a kind of decide an electric current output control system or a power supply circuits module, be in electrical communication with the electric power supply unit that to adjust output power respectively, after a predetermined power of being sent in the reception electric power supply unit, the output power of supplying certain electric current is at least one load, and the part branch feeding fault in this decides electric current output control system or this power supply circuits module maybe must cut off when overhauling, send corresponding control signal electric power supply unit institute output power is increased to a redundant power from this predetermined power, decide electric current so that this output power is maintained this.
The technological means that the present invention deals with problems:
The present invention provides a kind of decide electric current output control system or a kind of power supply circuits module for solving the technological means that prior art problems adopted.The power supply circuits module receives the predetermined power that an electric power supply unit is sent, and the output power of supplying certain electric current is at least one load, and this power supply circuits module comprises a plurality of branch feeding circuit, a current detecting unit and power supply processing unit.A plurality of branch feeding circuit are connected in parallel to each other and are in electrical communication with electric power supply unit and load, use to receive predetermined power and export the electric power of a plurality of branch currents with correspondence, and the electric power of each branch current accumulates the output power of deciding electric current and is supplied to load.
Current detecting unit is in electrical communication with each branch feeding circuit, uses and detects each branch current.The power supply processing unit is in electrical communication with current detecting unit and electric power supply unit respectively, uses according to the above-mentioned branch current that detects, and sends a control signal.When above-mentioned wherein when at least one branch feeding circuit interruption is exported the electric power of this branch current, control signal can be controlled this electric power supply unit and send out a redundant power that is higher than predetermined power, uses output power to be maintained decide electric current.
The above-mentioned electric current output control system of deciding includes master control integration supply module and at least one subordinate integration supply module, uses the output power that provides bigger and arrives at least one load.Master control is integrated supply module and is included a master control processing unit and a plurality of above-mentioned power supply circuits module, and subordinate is integrated supply module and included a Slave Processing Unit and a plurality of above-mentioned power supply circuits module.Subordinate is integrated the Slave Processing Unit of supply module, is to integrate subordinate to integrate the control signal that the power supply circuits module under the supply module sends and send a subordinate and integrate and control signal to the master control processing unit and integrate the affiliated power supply circuits module of supply module with subordinate.
The master control processing unit of supply module is integrated in master control, be integrate master control integrate the subordinate that Slave Processing Unit sent that control signal that the power supply circuits module under the supply module sends and subordinate integrate supply module integrate control signal and send a master control integrate control signal to electric power supply unit, Slave Processing Unit is integrated the affiliated power supply circuits module of supply module with master control.
The present invention contrasts the effect of prior art:
By with as can be known above-mentioned,, provided by the present inventionly decide electric current output control system or power supply circuits module and can when part branch feeding fault maybe must cut off maintenance, still output power can be maintained and decide electric current compared to first kind of prior art.Simultaneously, compared to second kind of prior art, provided by the present invention decide electric current output control system or power supply circuits module can be under incremental redundancy branch feeding circuit separately and corresponding diverter switch, can reach above-mentioned purpose, and can further integrate the output power that supply module provides higher electric current by configuration master control integration supply module and a plurality of subordinate.
Specific embodiment of the present invention will be by following embodiment and graphic being further described.
Description of drawings
Fig. 1 is for showing the Circuits System calcspar of an existing embodiment;
Fig. 2 is for showing the wherein power supply situation during a branch feeding circuit interruption output power of first figure;
Fig. 3 is for showing the Circuits System calcspar of another existing embodiment;
Fig. 4 is for showing the Circuits System calcspar of first embodiment of the invention;
Fig. 5 is for showing the wherein power supply situation during a branch feeding circuit interruption output power of the 4th figure;
Fig. 6 sends redundant power to keep the schematic diagram of deciding electric current output for showing power supply processing unit control power supply unit; And
Fig. 7 is for showing the circuit block diagram of second embodiment of the invention.
Drawing reference numeral:
1,1a power supply circuits module
11,12,13,14,15,16 branch feeding circuit
11a, 12a, 13a, 14a, 15a, 16a branch feeding circuit
17a redundant branch power supply circuits
The 18a current detecting unit
The 19a processing unit
2,2a electric power supply unit
3,3a, 3b, 3c load
100 decide the electric current output control system
Supply module is integrated in 200 master controls
The 200a subordinate is integrated supply module
4,4a, 4b, 4c power supply circuits module
41,42,43,44,45,46 branch feeding circuit
47 current detecting units
48 power supply processing units
5 master control processing units
The 5a Slave Processing Unit
The P diverter switch
I1, I2, I3, I4, I5, I6 branch current
I1 ', I2 ', I3 ', I4 ', I5 ', I6 ' branch current
The surplus branch current of I7
IT, IT ', IT " decide electric current
IT, IT1, IT2, IT3 decide electric current
S1, S1 ' detection signal
S2, S2 ' control signal
S3, S4 integrated signal
The S5 subordinate is integrated control signal
Control signal is integrated in the S6 master control
Embodiment
Owing to provided by the present inventionly decide the electric current output control system and the power supply circuits module can be widely used in multiple electronic apparatus device, equipment and system, particularly carrying out test or the real-time system that controls on burn-in test, the line, its combination execution mode is too numerous to enumerate especially, so give unnecessary details no longer one by one at this, only enumerate two wherein preferable embodiment and specified.
See also Fig. 4 to Fig. 6, Fig. 4 is for showing the Circuits System calcspar of first embodiment of the invention, Fig. 5 is the wherein power supply situation during a branch feeding circuit interruption output power of displayed map 4, and Fig. 6 sends redundant power to keep the schematic diagram of deciding electric current output for showing power supply processing unit control power supply unit.As shown in the figure, one power supply circuits module 4 is in electrical communication with one respectively can adjust the electric power supply unit 2a of output power and above-mentioned load 3, and this power supply circuits module 4 comprises six branch feeding circuit 41,42,43,44,45 and 46, also comprises a current detecting unit 47 and a power supply processing unit 48 simultaneously.
Six branch feeding circuit 41,42,43,44,45 and 46 are connected in parallel to each other, and are in electrical communication with electric power supply unit 2a and load 3 respectively.Current detecting unit 47 is in electrical communication with six branch feeding circuit 41,42,43,44,45 and 46 respectively, and simultaneously, power supply processing unit 48 is in electrical communication with current detecting unit 47 and electric power supply unit 2a respectively.
When electric power supply unit 2a sends out a predetermined power, six branch feeding circuit 41,42,43,44,45 and the 46 corresponding respectively electric power of exporting six above-mentioned branch current I1, I2, I3, I4, I5 and I6.An also nearly step of electric power I1, I2, I3, I4, I5 and the I6 of six branch currents accumulates above-mentionedly decides the output power of electric current I T and is supplied to this load 3.Simultaneously, current detecting unit 47 can detect six branch current I1, I2, I3, I4, I5 and I6, and sends a detection signal S1 ' to the processing unit 48 of powering.
When branch feeding circuit 45 because fault or carry out routine and during provisional maintenance, will certainly cut off branch feeding circuit 45 and the electric power of interruption output branch current I5 in the mode of hot removal, thereby, only remaining other five branch feeding circuit 41,42,43,44 can be kept normal operation with 46 and the corresponding respectively electric power of exporting five branch current I1, I2, I3, I4 and I6, and accumulate another and decide electric current I T " output power and be supplied to this load 3 (as shown in Figure 5).Yet person unlike the prior art, in the present embodiment, this moment, processing unit 48 meetings send a control signal S2 ' to electric power supply unit 2a according to the change of detection signal S1 ', use control power supply unit 2a and send out a redundant power that is higher than this predetermined power, use and make five branch feeding circuit 41,42,43,44 are higher than branch current I1 with 46 five of corresponding respectively outputs, I2, I3, the branch current I1 ' of I4 and I6, I2 ', I3 ', the electric power of I4 ' and I6 ', and conflux and become to decide the output power of electric current I T, use making output power maintain the above-mentioned electric current I T (as shown in Figure 6) that decides.
When above-mentioned branch feeding circuit 45 then when recovering the electric power of this branch current of output I5 from interrupting, this control signal S2 ' can send out this predetermined power by control this electric power supply unit 2a, uses to make this output power continue to maintain this to decide electric current I T (as shown in Figure 4).
Follow the hypothesis of prior art, if the predetermined power that electric power supply unit 2a supplied is 100 volts the voltage of deciding, six branch feeding circuit 41,42,43,44,45 and 46 impedance are all 5 ohm, then six branch current I1, I2, I3, I4, I5 and I6 are all 20 amperes, and the electric current I T that decides that is compiled is 120 amperes.
When branch feeding circuit 45 interrupts the electric power of output branch current I5, that is compiled decides electric current I T " only surplus 100 amperes; at this moment; control signal S2 ' can control power supply unit 2a adjusts and sends out a redundant power that is higher than this predetermined power; then five branch feeding circuit 41,42,43,44 and 46 branch currents of being exported then transfer 24 amperes to, and accumulate 120 amperes of output powers of deciding electric current once more.
When above-mentioned branch feeding circuit 45 from interrupting then when recovering the branch current of 20 amperes of outputs, control signal S2 ' can recover send out this predetermined power by this electric power supply unit of control 2a, use making output power continue to maintain to decide 120 amperes in electric current.
Please continue to consult Fig. 7, for showing the circuit block diagram of second embodiment of the invention.As shown in the figure, certain electric current output control system 100 is in electrical communication with above-mentioned electric power supply unit 2a and four loads 3,3a, 3b and 3c that adjust output power respectively, and comprises master control integration supply module 200 and subordinate integration supply module 200a.
Master control is integrated supply module 200 and is comprised one as power supply circuits module that above-mentioned enforcement disclosed 4, one and power supply circuits module 4 same or analogous power supply circuits module 4a and a master control processing unit 5.Power supply circuits module 4 is supplied the output power of deciding electric current I T and IT1 respectively with 4a and is arrived load 3 and 3a.Master control processing unit 5 is in electrical communication with electric power supply unit 2a and power supply circuits module 4 and 4a respectively, and the above-mentioned control signal S2 ' that power supply circuits module 4 and 4a are sent is integrated into an integrated signal S3 and is sent to master control processing unit 5 and handles.
Subordinate is integrated supply module 200a and is comprised two and power supply circuits module 4 same or analogous power supply circuits module 4b and a 4c and a Slave Processing Unit 5a.Power supply circuits module 4b and 4c supply the output power of deciding electric current I T2 and IT3 respectively to arrive load 3b and 3c.Slave Processing Unit 5a is in electrical communication with electric power supply unit 2a and power supply circuits module 4b and 4c respectively, and the above-mentioned control signal S2 ' that power supply circuits module 4 and 4a are sent is integrated into an integrated signal S4 and is sent to Slave Processing Unit 5a and handles.Slave Processing Unit 5a can send a subordinate according to integrated signal S4 and integrate control signal S5 to master control processing unit 5 and power supply circuits module 4b and 4c, uses control power supply circuits module 4b and 4c.
Master control processing unit 5 can be integrated control signal S5 and send master control integration control signal S6 to electric power supply unit 2a, Slave Processing Unit 5a and power supply circuits module 4 and 4a according to integrated signal S3 and subordinate, uses control power supply unit 2a, Slave Processing Unit 5a and power supply circuits module 4 and 4a.
When at least one branch feeding circuit interruption among power supply circuits module 4,4a, 4b and the 4c in supply module 200 and subordinate integration supply module 200a are integrated in master control is exported the electric power of branch current, control signal S6 is integrated in this master control can send out another redundant power by control power supply unit 2a, uses this output power to be maintained respectively decide electric current I T, IT1, IT2 and IT3.Simultaneously, if continue to follow above hypothesis, and electric power supply unit 2a can send enough power decide the voltage predetermined power, then should decide electric current output control system 100 common exportable 480 amperes decide electric current.
Such as possess in affiliated technical field and know that usually the knowledgeable all can understand easily, in practice utilization aspect, above-mentioned master control processing unit 5 and Slave Processing Unit 5a can make the master slave relation transposition between the two by suitable commutation circuit, also can by suitable commutation circuit under suitable System Operation condition, make the exchange function of master control processing unit 5 and Slave Processing Unit 5a.Simultaneously, also can be under suitable System Operation condition by suitable commutation circuit, make power supply circuits module 4,4a, 4b and the 4c can be via master control processing unit 5 and Slave Processing Unit 5a, can be as described in first embodiment, directly the electric power output of this electric power supply unit 2a is controlled in feedback.
By the above-mentioned embodiment of the invention as can be known, the value on the true tool industry of the present invention.Above embodiment explanation only is preferred embodiment explanation of the present invention, has in the affiliated such as technical field to know that usually the knowledgeable is when doing other all improvement and variation according to the above embodiment of the present invention explanation.Yet all improvement and variation that these are done according to the embodiment of the invention are in the protection range that still belongs to invention spirit of the present invention and define.
Claims (9)
1. a power supply circuits module is characterized in that, described circuit module receives the predetermined power that an electric power supply unit is sent, and the output power of supplying certain electric current is at least one load, and this power supply circuits module comprises:
A plurality of branch feeding circuit, be connected in parallel to each other, and be in electrical communication with described electric power supply unit and described load, export the electric power of a plurality of branch currents to receive described predetermined power with correspondence, the electric power of each branch current accumulates describedly to be decided the output power of electric current and is supplied to this load;
One current detecting unit is in electrical communication with each branch feeding circuit, to detect each branch current; And
One power supply processing unit is in electrical communication with described current detecting unit and described electric power supply unit respectively, with the above-mentioned branch current that is detected of foundation, and sends a control signal;
When above-mentioned wherein when at least one branch feeding circuit interruption is exported the electric power of described branch current, described control signal can be controlled described electric power supply unit and send out a redundant power that is higher than described predetermined power, so that described output power maintains the described electric current of deciding.
2. as 1 described power supply circuits module of claim the, it is characterized in that, when above-mentioned branch feeding circuit then when recovering the electric power of the described branch current of output from interrupting, described control signal can be controlled described electric power supply unit and send out described predetermined power, so that described output power continues to maintain the described electric current of deciding.
3. a fixed current power output control system is characterized in that, this fixed current power output control system comprises master control integration supply module, and this master control integration supply module comprises:
A plurality of power supply circuits modules as claimed in claim 1, and these a plurality of power supply circuits modules are supplied at least one described output power of deciding electric current at least one described load;
One master control processing unit is in electrical communication with described electric power supply unit and described a plurality of power supply circuits module respectively, to integrate the control signal that each power supply circuits module is sent, integrates control signal and send a master control;
When above-mentioned wherein when at least one branch feeding circuit interruption is exported the electric power of described branch current, described master control integration control signal can be controlled described electric power supply unit and send out another redundant power, so that described output power maintains the described electric current of deciding.
4. fixed current power output control system as claimed in claim 3, it is characterized in that, when above-mentioned branch feeding circuit then when recovering the electric power of the described branch current of output from interrupting, described master control integration control signal can be controlled described electric power supply unit and send out described predetermined power, so that described output power continues to maintain the described electric current of deciding.
5. fixed current power output control system as claimed in claim 3 is characterized in that, described master control is integrated control signal and is sent to each power supply circuits module in addition, to control each power supply circuits module.
6. fixed current power output control system as claimed in claim 3 is characterized in that, this fixed current power output control system also comprises at least one subordinate integration supply module, and this subordinate integration supply module comprises in addition:
Above-mentioned a plurality of power supply circuits module as claimed in claim 1, and described a plurality of power supply circuits module is supplied at least one described output power of deciding electric current at least one described load;
One Slave Processing Unit, be in electrical communication with described electric power supply unit, master control processing unit and subordinate respectively and integrate the included a plurality of power supply circuits modules of supply module, integrate the control signal that each included power supply circuits module of supply module is sent to integrate this subordinate, control signal to this master control processing unit and send subordinate integration;
When at least one included branch feeding circuit interruption of described subordinate integration supply module is exported the electric power of described branch current, described master control integration control signal can be controlled described electric power supply unit according to described subordinate integration control signal and send out another described redundant power, so that the output power that this subordinate integration supply module is exported maintains the described electric current of deciding.
7. fixed current power output control system as claimed in claim 6 is characterized in that, control signal is integrated in described master control can be sent to described Slave Processing Unit to control this Slave Processing Unit.
8. fixed current power output control system as claimed in claim 6, it is characterized in that, when above-mentioned subordinate is integrated the included branch feeding circuit of supply module from interrupting then when recovering the electric power of output branch current, described master control integration control signal can be controlled described electric power supply unit and send out described predetermined power, so that described output power continues to maintain the described electric current of deciding.
9. fixed current power output control system as claimed in claim 6, it is characterized in that, it is to be sent to described subordinate in addition to integrate the interior power supply processing unit of each included power supply circuits module of supply module that described subordinate is integrated control signal, integrates each included power supply circuits module of supply module to control this subordinate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200710007056XA CN100550567C (en) | 2007-02-07 | 2007-02-07 | Power supply circuits module and fixed current power output control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200710007056XA CN100550567C (en) | 2007-02-07 | 2007-02-07 | Power supply circuits module and fixed current power output control system |
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| Publication Number | Publication Date |
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| CN101242100A CN101242100A (en) | 2008-08-13 |
| CN100550567C true CN100550567C (en) | 2009-10-14 |
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| CNB200710007056XA Expired - Fee Related CN100550567C (en) | 2007-02-07 | 2007-02-07 | Power supply circuits module and fixed current power output control system |
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Granted publication date: 20091014 Termination date: 20160207 |