CN1665111A - Power supply stabilizing device having active ballasting function and method thereof - Google Patents
Power supply stabilizing device having active ballasting function and method thereof Download PDFInfo
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- CN1665111A CN1665111A CN2004100082807A CN200410008280A CN1665111A CN 1665111 A CN1665111 A CN 1665111A CN 2004100082807 A CN2004100082807 A CN 2004100082807A CN 200410008280 A CN200410008280 A CN 200410008280A CN 1665111 A CN1665111 A CN 1665111A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
Abstract
The invention discloses an initiative ballasting power supply stabilizing device and method, used to real-timely and stably control the control power supply of HID lamp, and comprising: power supply unit, arranged in the stabilizing device to generate external operating voltage and provided with DC-DC converter inside to make step-down conversion on output voltage; microcontroller unit, reading external various working conditions of the stabilizing device or HID lamp as its external reference parameters to generate a given load current; and PWM control unit, provided with proportional, integrative and differential (PID) control components to calculate the said load current and the actual load current of the HID lamp and let the said DC-DC converter regulate and change the output voltage according to the calculated results. The invention has a simple structure and can real-timely and stably regulate and change the load current.
Description
Technical field
The present invention relates to a kind of power supply stabilizer and method, particularly relate to and a kind ofly include power-supply unit and with the power supply stabilizer and the method for microprogrammed control unit control circuit.
Background technology
The employed light source of projector on the market mostly is a kind of high illumination gaseous discharge lamp (HID) at present, and for avoiding unsettled voltage source or user's misoperation to damage this HID lamp, all need to set stable power control in this projector, the power control 1 of existing HID projector lamp as shown in Figure 1 ', comprise power supply unit (Power supply) 10 ' and electric stabilizer (Ballast) 20 ', wherein this power supply unit 10 ' with electric stabilizer 20 ' circuit divide and to be arranged, particularly in auxiliary power circuit 115 ' and 220 ' part.The mode of its running as shown in Figure 1, at first this power supply unit 10 ' be activated back receive the input mains supply (AC 95V～230V) 100 ', after Electromagnetic interference filter (EMIfiliter) 105 ' removal Electromagnetic Interference wherein in it, and power factor corrector (PFC) is divided into two-way after converting this AC power to DC power supply, wherein one the tunnel import this electric stabilizer 20 ' in, in its circuit through DC-DC transducer 200 ' conversion step-down, be the actual lamp operating voltage through the 205 ' inversion of DC-AC transducer again, for this HID lamp 30 ' utilization.But be noted that aforementioned electronic stabilizer 20 ' the ballast mode be to detect earlier this actual lamp electric current passively, control by this pulse wave width modulation (PWM) through transfer function again, in addition its extra auxiliary power circuit 220 of still needing ' provide operating voltage to electric stabilizer 20 ', so make device complicated.In addition, because electric stabilizer 20 ' be to detect this actual lamp electric current passively, so relatively poor to the real-time of the stable control of power supply.
Summary of the invention
For solving the shortcoming of aforementioned prior art, main purpose of the present invention is to provide a kind of have initiatively the power supply stabilizer and the method for ballast function, it is integrated into power-supply unit (power supply) in the electric stabilizer, the required working power of this stabilizer is directly provided by this power-supply unit, two power circuits that will repeat originally merge into one thus, and need not the extra auxiliary power circuit that is provided with as prior art, so can save the assembly cost, and simplify the complexity of total system.
A secondary objective of the present invention is to provide a kind of have initiatively the power supply stabilizer and the method for ballast function, and it utilizes micro controller unit (MCU) take the initiative ballast, the start-up course of real-time stabilization control HID lamp thus.
Another secondary objective of the present invention is to provide a kind of have initiatively the power supply stabilizer and the method for ballast function, it utilizes micro controller unit (MCU) to read the external parameter of the various working conditions of this power supply stabilizer or HID lamp as its reference, with the actual activated current of real-time modulation HID lamp.
In order to achieve the above object, a kind of initiatively power supply stabilizer of ballast function that has of the present invention, be used for stablizing the control power supply of control load assembly such as HID lamp, it comprises: power-supply unit, micro controller unit, several detection element and pulse wave width modulation (PWM) control unit.
The aforementioned power source feeding unit is used to receive mains supply, and it comprises: auxiliary power circuit is used to produce operate outside voltage; Electromagnetic interference filter (EMI Filter) is filtered the electromagnetic wave noise in this mains supply; The DC-DC transducer is made voltage step-down with the voltage of this DC-DC transducer of input and is handled; Power factor corrector (PFC) is used for the AC power that aforesaid filters transmits is converted to DC power supply, to export aforementioned auxiliary power circuit and DC-DC transducer respectively to; And DC-AC transducer.
Several detection element, the working condition that is used to detect outside this micro controller unit relevant power supply stabilizer or HID lamp are as external parameter, for giving aforementioned micro controller unit reference.This micro controller unit is the load current that directly uses the said external operating voltage and set according to the said external parameter generating.
This pulse wave width modulation control unit, has ratio, integration and differential (PID) control assembly, the actual loading electric current of the aforementioned setting load current of computing and this load component, and make the voltage of its output of aforementioned DC-DC transducer modulation and then the actual loading electric current of this load component of real-time stabilization modulation according to this operation result.
In addition, according to the stable method of the power supply of a kind of initiatively ballast of the present invention, be used for stable control power supply stabilizer device and load component such as HID lamp between the actual loading electric current, its step comprises: the activating power feeding unit begins to receive mains supply, and utilizes auxiliary power circuit to produce operate outside voltage; To import the voltage of this DC-DC transducer by the DC-DC transducer in this power-supply unit and do the step-down processing; The working condition of detecting relevant power supply stabilizer beyond this micro controller unit or HID lamp is as external parameter, for the micro controller unit reference.Use the said external operating voltage and read the said external parameter with this micro controller unit to produce the setting load current, and can judge further whether this external parameter whether in the default scope of this micro controller unit, produces the information that is available for users to identification with decision; Proportion of utilization, integration and differential (PID) control assembly, the aforementioned setting load current of computing and this actual loading electric current; And make the voltage of its output of aforesaid voltage transducer modulation according to this operation result, and then in real time, the actual loading activated current of this load component of modulation stably.
The present invention is simple in structure to save the assembly cost, and simplifies the complexity of total system.And can be in real time, the electric current of modulation actual loading stably, voltage.
Description of drawings
Fig. 1 is the structural representation of the power control of existing HID projector lamp;
Fig. 2 is the structural representation according to the power supply stabilizer of the embodiment of the invention;
Fig. 3 is the workflow diagram according to the micro controller unit of the power supply stabilizer of the embodiment of the invention.
Fig. 4 is the current-carrying flow chart of actual negative according to the stable control of the power supply stabilizer HID lamp of the embodiment of the invention.
Fig. 5 is the activation performance diagram according to the HID lamp of the embodiment of the invention.
Embodiment
Relevant detailed description of the present invention and technology contents, existing as follows with regard to accompanying drawings:
As shown in Figure 2, a kind of power supply stabilizer 1 according to a preferred embodiment of the present invention with active ballast function, be used for stablizing the control power supply of control load assembly such as HID lamp 20, it comprises: power-supply unit 10, micro controller unit (MCU) 100, several detection element (not shown)s and pulse wave width modulation (PWM) control unit 220.
Aforementioned power source feeding unit 10 receives outside mains supply 200 when mains switch is activated, its inside comprises: Electromagnetic interference filter (EMI Filter) 202 is used for filtering the electromagnetic wave noise of this mains supply 200; Auxiliary power circuit 235 is used to produce the working power that operate outside voltage Vdd provides this micro controller unit 100, and the internal work voltage vcc is as the power supply supply of aforementioned other each unit; Power factor corrector (PFC) 204 is used for the AC power that aforesaid filters 202 transmits is converted to DC power supply, and is divided into two-way and exports aforementioned auxiliary power circuit 235 and DC-DC transducer 208 respectively to; This DC-DC transducer 208 converts the voltage Vs that imports this DC-DC transducer 208 to output voltage V o as voltage step-down; And DC-AC transducer 210 and aforementioned micro controller unit 100 electric connections, and carry out the inversion control that is transformed into AC power by DC power supply.
Several detection element, each detection element is formed by some specific electrical resistance and operational amplifier, and be provided with respectively and be adjacent to this power factor corrector 204, DC-DC transducer 208 and HID lamp 20 parts, and electrically connect with aforementioned micro controller unit 100, with working conditions such as the lamp temperature T of the output voltage V o of the output voltage V s that detects this power factor corrector (PFC) 204 respectively, this DC-DC transducer 208 or HID lamp 20 or actual loading electric current I o several external parameters as aforementioned micro controller unit 100 references.
This micro controller unit (MCU) the 100th directly uses the actual loading electric current I o of said external operating voltage and basis of design said external parameter such as this HID lamp, produces the load current Ip of a setting.In addition this micro controller unit (MCU) 100 can further judge received or each different external parameter of reading whether in the default scope of this micro controller unit, whether produce an information that is available for users to identification with decision, as warning message, perhaps whether decision begins control circuit.In addition, user's interface (UI) can be set on the aforementioned power source stabilizer 1, preset the setting load current Ip of aforesaid external parameters such as HID lamp 20 from the outside, via this micro controller unit 100 to make things convenient for the user.Micro controller unit in preferred embodiment of the present invention (MCU) 100 can be selected the ADUC812 product of ANALOG company for use.
This pulse wave width modulation control unit 220, in establish ratio, integration and a differential (PID) control assembly 225, can be to the actual loading electric current I o of aforementioned setting load current Ip, HID lamp 20, and aforementioned between the two error amount computing in addition, and make the voltage Vo of aforementioned DC-DC transducer 208 suitable its outputs of modulation and then the actual loading electric current I o of this HID lamp 20 of real-time stabilization modulation according to this operation result.
Therefore, according to a kind of power supply stabilizer 1 with active ballast function of the present invention is that this power-supply unit (Power Supply) 10 is integrated, this power supply stabilizer 1 required working power can directly be provided, so can save the working power circuit assembly that falls prior art by this power-supply unit 10.Secondly, power supply stabilizer 1 of the present invention is because of adding this micro controller unit 100, so can be in advance with the setting load starting current Ip of program setting HID lamp 20, detect the actual loading electric current of HID lamp simultaneously, through the computing of this ratio, integration and differential (PID) control assembly 225, can reach the purpose of the actual loading starting current Io of real-time ACTIVE CONTROL HID lamp 20 again.
In addition, see Fig. 2, a kind of stable method of power supply with active ballast function according to a preferred embodiment of the present invention is used for the control circuit between stable control one power supply stabilizer device 10 and a load component such as the HID lamp 20, comprises the steps:
At first the activating power switch makes this power-supply unit 10 receive input mains ac power supply 200, and carries out filtering (comprising the bridge rectifier process) through Electromagnetic interference filter (EMI filiter) 202.Afterwards, convert direct voltage (380V) Vs of output again to by power factor corrector (PFC) 204 (exchanging changes direct current), and be divided into two-way output, one tunnel input voltage as this auxiliary power circuit 235 wherein, another road inputs to these DC-DC transducer 208 conversion step-downs and becomes output voltage V o.The voltage of importing this auxiliary power circuit 235 can be divided into two-way output again, obtain accessory power supply Vdd and Vcc respectively, wherein this out-put supply Vcc is power supply supply (POWER SUPPLY) as accessory power supply master output, and another out-put supply Vdd then provides in the circuit other chip (CHIP) as the working power of micro controller unit 10.Through this DC-AC transducer 210 with the output voltage V o of aforementioned direct current be reverse into frequency for the AC power of 400Hz to provide this HID lamp 20 required actual load voltage.
After power supply activates, via the load current Ip of aforementioned micro controller unit 100 with export setting, and detection element detects the actual loading electric current I o after relevant this HID lamp 20 triggers, both carry out computing through this ratio, integration and differential (PID) control assembly 225, according to this operation result, make the magnitude of voltage of 208 couples of output voltage V o of this DC-DC transducer carry out suitable modulation, and then the actual loading electric current I o of modulation HID lamp, set load current Ip so can follow the trail of it at any time, reach the purpose that starts current limliting with actual loading electric current I o.
The detailed start flow process of relevant aforementioned micro controller unit 100 can be further with reference to figure 3, and its step comprises:
Step S300 and S302, when the whole system initialization, this micro controller unit 100 carries out selftest;
Step S304 judges that aforementioned test whether by (Pass), does not then produce flag in the buffer (not shown) as having, so that the information that this power supply stabilizer dress gives a warning reminds the user to note;
Step S310 activates this power factor corrector (PFC) 204 with output voltage V s;
Step S312 judges that this power factor corrector 204 has or not output voltage, promptly judges whether normal operation of this power factor corrector 204; If promptly send an error message and finish whole start flow process for undesired running;
Step S316 utilizes micro controller unit 100 output inversion waveforms with control DC-AC transducer 210 direct voltage Vo to be transformed into AC power, uses for HID lamp 20.
Step S318 judges to have or not the actual loading electric current I o that detects HID lamp 20, promptly judges whether normal operation of this HID lamp 20; As not having, promptly send an error message and finish whole start flow process;
Step S322 exports the load current Ip of setting relatively according to the actual loading electric current I o that detects HID lamp 20;
Step S324 reads the various external parameters that each detection element detects, as activates this power factor corrector (PFC) 204 with output voltage V s, the voltage Vo of DC-DC transducer output, the lamp temperature T that reaches the HID lamp and actual loading electric current I o etc.; And
Step S326 judges that aforementioned each external parameter is whether in default value range; As but step S328 promptly send an error message and finish whole start flow process.
Ask for an interview Fig. 4, this is the workflow diagram of relevant power supply stabilizer of the present invention 1 stable control HID lamp power supply, and its step comprises:
Step 400, S402 and S405, proportion of utilization, integration and differential (PID) control assembly carries out computing with the actual loading electric current I o of the setting load current Ip of aforementioned micro controller unit 100 outputs and the HID lamp 20 that detects;
Step 410 makes DC-DC transducer 208 that its output voltage V o is carried out suitable modulation according to aforementioned operation result; And
Step 415, because the modulation of output voltage V o, so the actual loading activated current of this load component of modulation in real time, and
Step 415 is detected the actual loading electric current I o of HID lamp 20 again, and utilizes this micro controller unit 100 to set load current Ip according to the actual loading electric current I o that detects with output again, so goes round and begins again, and reaches the purpose of stablizing control load activated current Io always.As shown in Figure 5, be starting characteristic curve chart according to the HID lamp of power supply stabilizer of the present invention, wherein can find when HID lamp 20 when just starting, the actual loading activated current of lamp approximately is 150% of a normal current, on the contrary voltage and power approximately are the 20%-40% of normal value.But after stable control lamp current, this actual loading electric current can descend gradually, and voltage and power rise gradually, can reach normal value when the 1.5min. left and right sides, use the circuit in protection HID lamp and the power supply stabilizer.
As known from the above, according to power supply stabilizer 1 of the present invention be to utilize micro controller unit 100 to plan as a whole the control of all power circuits, comprise as:
1. export the inversion waveform, to carry out the inversion control of DC power supply change AC power through DC-AC transducer 210.
2. read the actual loading electric current I o of the HID lamp 20 that is detected, i.e. this micro controller unit 100 is advanced in the magnitude of voltage collection that obtains output current Io through detection element.
3. read the output voltage V o of the DC-DC transducer 208 that is detected, gather voltage and import in the micro controller unit 100 by detection element.
4. read the output voltage V s of this power factor corrector (PFC) 204 that is detected, it is gathered voltage by detection element and imports in the micro controller unit 100.
5. can stablize the load starting current of control HID lamp.Because digital analog converter (D/A CONV.) is contained in these micro controller unit 100 inside, so can set the load starting current, and by the characteristic of ratio, integration and differential (PID) control assembly, can change output voltages by DC-DC transducer 208 voltage of current-carrying voltage of actual negative and setting load current will be equated, so thereby reach the purpose that changes output current.
In sum, the tool of the present invention as can be known initiatively power supply stabilizer and the method for ballast function is to make the required working power of this electric stabilizer directly by its attached power-supply unit, so can save the assembly cost, simplifies the complexity of total system.Secondly, with a micro controller unit (MCU) read these various working conditions as the external parameter of its reference with the active ballast, so can real-time stabilization control the start-up course of HID lamp.
Above introduce, it only is preferred embodiment of the present invention, can not limit scope of the invention process with this, i.e. the variation that is equal to done according to the present invention of those skilled in the art in the present technique field is for example carried out combination and variation with each device among the above embodiment and step.And those skilled in that art improvement, the variation known, all should still belong to the scope that patent of the present invention contains.
Claims (29)
1. power supply stabilizer is characterized in that it comprises:
Power-supply unit is used to receive mains supply, wherein have auxiliary power circuit and be used to produce operate outside voltage, and the electric pressure converter voltage that will import this electric pressure converter is made voltage transitions and is handled;
Micro controller unit directly uses the said external operating voltage and produces the load current of setting; And
Pulse wave width modulation (PWM) control unit, proportion of utilization, integration and differential (PID) control assembly, the actual loading electric current of the load current of the aforementioned setting of computing and this load component, and make the voltage of its output of aforesaid voltage transducer modulation according to this operation result.
2. power supply stabilizer as claimed in claim 1 is characterized in that this electric pressure converter is the DC-DC transducer, the voltage of input DC-DC transducer can be done step-down and handle.
3. power supply stabilizer as claimed in claim 1 is characterized in that described power supply stabilizer has the load current that user's interface is available for users to default aforementioned setting in this micro controller unit.
4. power supply stabilizer as claimed in claim 2, it is characterized in that this power-supply unit further comprises: Electromagnetic interference filter (EMI Filter), filter the electromagnetic wave noise in this mains supply, and power factor corrector (PFC), be used for the AC power that aforesaid filters transmits is converted to DC power supply, to export aforementioned auxiliary power circuit and DC-DC transducer respectively to.
5. power supply stabilizer as claimed in claim 4 is characterized in that described power supply stabilizer further has several detection element, is used to detect the external parameter outside this micro controller unit, to offer aforementioned micro controller unit reference.
6. power supply stabilizer as claimed in claim 5 is characterized in that this micro controller unit further with reference to this at least one external parameter, and this external parameter comprises the actual loading electric current of this load component, to produce the load current of this setting.
7. power supply stabilizer as claimed in claim 6 is characterized in that this micro controller unit judges further whether this external parameter whether in the default scope of this micro controller unit, produces an information that is available for users to identification with decision.
8. power supply stabilizer as claimed in claim 7 is characterized in that this micro controller unit further judges this external parameter whether in the default scope of this micro controller unit, whether controls other unit beyond this micro controller unit with decision.
9. power supply stabilizer as claimed in claim 8 is characterized in that this external parameter further comprises the temperature of this load component, the output voltage of DC-DC electric pressure converter or the output voltage of this power factor corrector (PFC).
10. power supply stabilizer as claimed in claim 9, it is characterized in that described power supply stabilizer further comprises the DC-AC transducer, electrically connect with aforementioned micro controller unit, wherein this micro controller unit electrically connects and can need produce the inversion waveform the DC-AC transducer is carried out become the inversion control that exchanges by direct current according to the user.
11. power supply stabilizer as claimed in claim 1, the auxiliary power circuit that it is characterized in that this power-supply unit further produce internal work voltage with the usefulness as the power supply supply of aforementioned each unit.
12. the stable method of power supply is characterized in that may further comprise the steps:
The activating power feeding unit begins to receive mains supply, and utilizes auxiliary power circuit to produce operate outside voltage;
To import the voltage of this electric pressure converter by the electric pressure converter in this power-supply unit and do the voltage transitions processing;
Use the said external operating voltage and produce the load current of setting with micro controller unit;
Proportion of utilization, integration and differential (PID) control assembly, the load current of the aforementioned setting of computing and this actual loading electric current; And
Make the voltage of its output of aforesaid voltage transducer modulation according to this operation result.
13. power supply as claimed in claim 12 is stabilized method, it is characterized in that this electric pressure converter is the DC-DC transducer, the voltage of input DC-DC transducer can be done step-down and handle.
14. power supply as claimed in claim 12 is stabilized method, it is characterized in that this power-supply unit further comprises: Electromagnetic interference filter (EMI Filter) is filtered the electromagnetic wave noise in this mains supply, and power factor corrector (PFC), be used for the AC power that aforesaid filters transmits is converted to DC power supply, to export aforementioned auxiliary power circuit and DC-DC transducer respectively to.
15. power supply as claimed in claim 12 is stabilized method, it is characterized in that the stable method of described power supply further comprises: by the load current of user's interface for user's default aforementioned setting in this micro controller unit.
16. power supply as claimed in claim 14 is stabilized method, it is characterized in that the stable method of described power supply further comprises: detect this micro controller unit at least one external parameter in addition, for aforementioned micro controller unit reference.
17. power supply as claimed in claim 16 is stabilized method, it is characterized in that the stable method of described power supply further comprises: when this micro controller unit comprises the actual loading electric current of this load component with reference to this at least one external parameter, promptly produce the load current of this setting.
18. power supply as claimed in claim 17 is stabilized method, it is characterized in that the stable method of described power supply further comprises: judge further by this micro controller unit whether this external parameter whether in the default scope of this micro controller unit, produces an information that is available for users to identification with decision.
19. power supply as claimed in claim 18 is stabilized method, it is characterized in that the stable method of described power supply further comprises: further judge this external parameter whether in the default scope of this micro controller unit by this micro controller unit, whether control other unit beyond this micro controller unit with decision.
20. power supply as claimed in claim 19 is stabilized method, it is characterized in that this external parameter further comprises the temperature of this load component, the output voltage of DC-DC transducer or the output voltage of this power factor corrector (PFC).
21. power supply as claimed in claim 12 is stabilized method, it is characterized in that the stable method of described power supply further comprises: produce the inversion waveform the DC-AC transducer is carried out become the inversion control that exchanges by direct current via this micro controller unit.
22. method as claimed in claim 12 is characterized in that the stable method of described power supply further comprises: utilize the auxiliary power circuit of this power-supply unit further to produce internal work voltage with usefulness as the power supply supply of aforementioned each unit.
23. the stable method of power supply is characterized in that may further comprise the steps:
Utilize the power-supply unit in this power supply stabilizer device to receive mains supply, to produce operate outside voltage;
Beyond the detecting micro controller unit at least about one of them parameter of power supply stabilizer device and load component;
By this micro controller unit reception said external operating voltage and with reference to the load current of said external parameter with the generation setting;
Proportion of utilization, integration and differential (PID) control assembly, the load current of the aforementioned setting of computing and this actual loading electric current; And
According to this operation result, with the actual loading activated current of real-time this load component of modulation.
24. power supply as claimed in claim 23 is stabilized method, it is characterized in that the stable method of described power supply further comprises: produce the inversion waveform via this micro controller unit and become the inversion control that exchanges to produce by direct current.
25. power supply as claimed in claim 23 is stabilized method, it is characterized in that this power-supply unit further comprises: Electromagnetic interference filter (EMI Filter) is filtered the electromagnetic wave noise in this mains supply; Power factor corrector (PFC) is used for the AC power that aforesaid filters transmits is converted to DC power supply; Auxiliary power circuit is used to produce this operate outside voltage; And the DC-DC transducer is subjected to the control demodulating voltage of aforementioned ratio, integration and differential (PID) control assembly.
26. power supply as claimed in claim 25 is stabilized method, it is characterized in that this external parameter further comprises the temperature of this load component, the output voltage of DC-DC transducer or the output voltage of this power factor corrector (PFC).
27. power supply as claimed in claim 26 is stabilized method, it is characterized in that the stable method of described power supply further comprises: when this micro controller unit comprises the actual loading electric current of this load component with reference to this at least one external parameter, promptly produce this setting load current.
28. power supply as claimed in claim 27 is stabilized method, it is characterized in that the stable method of described power supply further comprises: judge further by this micro controller unit whether this external parameter whether in the default scope of this micro controller unit, produces the information that is available for users to identification with decision.
29. power supply as claimed in claim 28 is stabilized method, it is characterized in that the stable method of described power supply further comprises: further judge this external parameter whether in the default scope of this micro controller unit by this micro controller unit, whether control other unit beyond this micro controller unit with decision.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100082807A CN100384067C (en) | 2004-03-02 | 2004-03-02 | Power supply stabilizing device having active ballasting function and method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2004100082807A CN100384067C (en) | 2004-03-02 | 2004-03-02 | Power supply stabilizing device having active ballasting function and method thereof |
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| CN1665111A true CN1665111A (en) | 2005-09-07 |
| CN100384067C CN100384067C (en) | 2008-04-23 |
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| CNB2004100082807A Expired - Fee Related CN100384067C (en) | 2004-03-02 | 2004-03-02 | Power supply stabilizing device having active ballasting function and method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100437509C (en) * | 2005-12-07 | 2008-11-26 | 微星科技股份有限公司 | Monitoring device for operation of hardware element |
| CN102271449A (en) * | 2010-06-07 | 2011-12-07 | 晟明科技股份有限公司 | Lamp source control system for mainly regulating output power of electronic ballast |
| CN102892245A (en) * | 2011-07-18 | 2013-01-23 | 台达电子企业管理（上海）有限公司 | Discharge lamp system and control method thereof |
| CN104062834A (en) * | 2014-06-09 | 2014-09-24 | 苏州佳世达光电有限公司 | Projector power supply system |
| CN109683693A (en) * | 2018-11-20 | 2019-04-26 | 北京计算机技术及应用研究所 | A kind of computer power supply of output timing self adaptive control |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR100576692B1 (en) * | 2000-07-06 | 2006-05-03 | 엘지전자 주식회사 | A circuit for driving back light lamp of LCD |
| US6861812B2 (en) * | 2001-01-12 | 2005-03-01 | Matsushita Electric Works, Ltd. | Discharge lamp ballast with DC-DC converter |
| TW487208U (en) * | 2001-03-09 | 2002-05-11 | Quanta Comp Inc | Dual adjustment back-lighted light adjusted controller |
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| CN100437509C (en) * | 2005-12-07 | 2008-11-26 | 微星科技股份有限公司 | Monitoring device for operation of hardware element |
| CN102271449A (en) * | 2010-06-07 | 2011-12-07 | 晟明科技股份有限公司 | Lamp source control system for mainly regulating output power of electronic ballast |
| CN102892245A (en) * | 2011-07-18 | 2013-01-23 | 台达电子企业管理（上海）有限公司 | Discharge lamp system and control method thereof |
| CN102892245B (en) * | 2011-07-18 | 2015-09-16 | 台达电子企业管理（上海）有限公司 | Discharge lamp system and control method thereof |
| CN104062834A (en) * | 2014-06-09 | 2014-09-24 | 苏州佳世达光电有限公司 | Projector power supply system |
| CN104062834B (en) * | 2014-06-09 | 2016-04-06 | 苏州佳世达光电有限公司 | Projector's power-supply system |
| CN109683693A (en) * | 2018-11-20 | 2019-04-26 | 北京计算机技术及应用研究所 | A kind of computer power supply of output timing self adaptive control |
| CN109683693B (en) * | 2018-11-20 | 2021-03-19 | 北京计算机技术及应用研究所 | Computer power supply with self-adaptive control of output timing sequence |
| CN112637991A (en) * | 2019-09-20 | 2021-04-09 | 台达电子工业股份有限公司 | Power supply applied to light emitting diode and operation method thereof |
| CN112152479A (en) * | 2020-09-22 | 2020-12-29 | 许昌学院 | New forms of energy plant lamp control circuit |
| CN112152479B (en) * | 2020-09-22 | 2023-03-14 | 许昌学院 | New forms of energy plant lamp control circuit |
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| CN100384067C (en) | 2008-04-23 |
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