CN201336506Y - Excitation power source for laser - Google Patents
Excitation power source for laser Download PDFInfo
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- CN201336506Y CN201336506Y CNU200820124782XU CN200820124782U CN201336506Y CN 201336506 Y CN201336506 Y CN 201336506Y CN U200820124782X U CNU200820124782X U CN U200820124782XU CN 200820124782 U CN200820124782 U CN 200820124782U CN 201336506 Y CN201336506 Y CN 201336506Y
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Abstract
The utility model relates to an excitation power source for a laser, which comprises a discharging main circuit, a sampling feedback control circuit and a weak current unit. The discharging main circuit comprises an anti-jamming filter circuit, a power factor calibration unit, a power conversion unit and an IGBT discharging unit, which are electrically connected in sequence. The sampling feedback control circuit comprises a central control unit, a preignition lamp lighting unit and two current sensors; the central control unit is respectively connected with the power factor calibration unit, the power conversion unit, the IGBT discharging unit, the preignition lamp lighting unit and the two current sensors; the preignition lamp lighting unit is respectively connected with the power factor calibration unit, the IGBT discharging unit and the central control unit; the two current sensors collect the output currents of the power factor calibration unit and the IGBT discharging unit and then transmit the output currents to the central control unit; and the central control unit judges the transmitted current and controls the power factor calibration unit and the IGBT unit to discharge stably according the judgment results. The excitation power source improves the output power factor and the discharging stability.
Description
Technical field
The utility model relates to a kind of power supply, particularly about a kind of laser excitation power supply.
Background technology
Recent two decades comes, laser processing technology formerly system to make the status of manufacture field more and more important, particularly at medical field, improve the controllability of laser equipment, stability, high efficiency and the security reliability of operation become the core of laser equipment development.And in laser equipment, power supply is the technology of most critical wherein, and the performance of power supply and index are determining the technical merit of laser equipment.But the power supply that uses in the existing laser equipment often exists that power consumption is big, power factor is low, discharge instability, and problem such as output voltage range is narrow.
Summary of the invention
At the problems referred to above, the purpose of this utility model provides a kind of output power factor height, and output voltage range is wide, and the laser excitation power supply of discharge stability.
For achieving the above object, the utility model is taked following technical scheme: a kind of laser excitation power supply is characterized in that comprising: discharge main circuit, a sampling feedback control circuit and a light current unit; Described discharge main circuit comprises an anti-interference filtration circuit, a power factor correction unit, a Power Conversion unit and an IGBT discharge cell that is electrically connected successively; Described sampling feedback control circuit comprises a central control unit, a pre-burning lighting unit and two current sensors; Wherein, described anti-interference filtration circuit is connected the output of external power grid with the input of light current unit; Described central control unit connects described power factor correction unit, Power Conversion unit, IGBT discharge cell, pre-burning lighting unit and two current sensors respectively; Described pre-burning lighting unit connects described power factor correction unit, IGBT discharge cell, central control unit respectively; The input of one described current sensor is connected between described power factor correction unit and the Power Conversion unit, the input of another described current sense connects the output of described IGBT discharge cell, and the output of two described current sensors all connects described central control unit; Described light current unit is given described power factor correction unit, Power Conversion unit, IGBT discharge cell, central control unit and the power supply of pre-burning lighting unit simultaneously; Two described current sensors are gathered described power factor correction unit and IGBT discharge cell output current, flow to described central control unit, described central control unit judges the electric current of described conveying, and controls described power factor correction unit and the IGBT discharge cell is stably exported according to judged result.
Described central control unit comprises a CPU and a logic control element, and described CPU connects described power factor correction unit, Power Conversion unit, IGBT discharge cell, pre-burning lighting unit, each current sensor and light current unit respectively by described logic control element.
Described power factor correction unit comprises a rectification soft starting circuit, a power factor correction auxiliary circuit and a power factor correction lossless absorption circuit that connects successively; The input of described rectification soft starting circuit connects the output of described anti-interference filtration circuit; Described power factor correction unit comprises also that successively one of serial connection enables control circuit, a pwm unit, one drive circuit and a protective circuit; Wherein said protective circuit is connected between the input of the output of described power factor correction auxiliary circuit and power factor correction lossless absorption circuit; The output of described power factor correction lossless absorption circuit is connected with the input of described Power Conversion unit, and described power factor correction lossless absorption circuit is connected the input of a described current sensor with the contact of described Power Conversion unit; The sample rate current of this current sensor is imported described logic control element, described logic control element and described CPU interactive information, described CPU flows to described control circuit and the pwm unit of enabling respectively with level instruction and pulse-width modulation instruction.
Described IGBT discharge cell comprises a discharge loop, a protective circuit, a pulse-width modulation circuit, an IGBT drive circuit, a voltage treatment circuit and a frequency modulation circuit; Wherein, described protective circuit connects described pulse-width modulation circuit, IGBT drive circuit and discharge loop successively; Described pulse-width modulation circuit connects described voltage treatment circuit and frequency modulation circuit; The positive output end of described discharge loop connects the input of described Power Conversion unit and the input of a described current sensor; The sample rate current of this current sensor is imported described logic control element; described logic control element and described CPU interactive information, described CPU flows to described protective circuit and the pulse-width modulation circuit of making respectively with level instruction and pulse-width modulation instruction.
Discharge loop in the described IGBT discharge cell comprises IGBT pipe, a diode, an xenon flash lamp, a resistance and an electric capacity that connects successively; The positive output end of described discharge loop is the contact between the positive plate of the drain electrode of described IGBT pipe and described electric capacity; The input of described IGBT lossless absorption circuit is connected between the anode of the source electrode of described IGBT pipe and diode, and the output of described IGBT lossless absorption circuit is the negative output terminal of described discharge loop; Described IGBT drive circuit connects the grid of described IGBT pipe.
The utility model is owing to take above technical scheme, and it has the following advantages: 1, because the utility model has adopted the mode of pulse-width modulation, improved the stability of power supply discharge, and can obtain high electrical power output by increasing the input of electrical power.2, because the utility model has adopted circuit of power factor correction, not only obtained stable high electrical power output, also reduced the loss of electrical power.3, because the utility model has adopted the Power Conversion unit, it is that the electrical power of output is further amplified, thereby has obtained higher electrical power output.4, be provided with a lossless absorption circuit in the IGBT discharge cell in the utility model, it can be further stable with the electrical power of output, thereby improved the stability of excitation power supply discharge.External power grid input voltage and wide frequency range that the utility model adopts can be widely used in various lasers.
Description of drawings
Fig. 1 is a structural representation of the present utility model
Fig. 2 is a power factor correction unit structural representation in the utility model
Fig. 3 is the structural representation of IGBT discharge cell in the utility model
Fig. 4 is the structural representation of pre-burning lighting unit in the utility model
Embodiment
Below in conjunction with drawings and Examples the utility model is described in detail.
As shown in Figure 1, the utility model comprises an anti-interference filtration circuit 1, a power factor correction unit 2, a Power Conversion unit 3, an IGBT (Insulated Gate Bipolar Transistor, igbt) discharge cell 4, a central control unit 5, a pre-burning lighting unit 6, two current sensors 7 and 8 and one light current unit 9.Wherein, anti-interference filtration circuit 1, power factor correction unit 2, Power Conversion unit 3 and the IGBT discharge cell 4 discharge main circuit that is electrically connected to form successively, central control unit 5, pre-burning lighting unit 6 and two current sensors 7 and 8 constitute a sampling feedback control circuit.
In the above-mentioned discharge main circuit, the input of anti-interference filtration circuit 1 connects the output of external power grid.Power Conversion unit 3 is an inverter circuit, and it changes the low frequency direct current into high-frequency DC, is used for to 4 chargings of IGBT discharge cell.
In the above-mentioned sampling feedback control circuit, central control unit 5 comprises a CPU 51 and a logic control element 52, logic control element 52 carries out information interaction with CPU 51, and CPU 51 connects power factor correction unit 2, Power Conversion unit 3, IGBT discharge cell 4, pre-burning lighting unit 6, current sensor 7 and 8 and light current unit 9 respectively by logic control element 52.CPU 51 wherein can adopt single-chip microcomputer, also can adopt other control appliance, and logic control element 52 adopts a programmable logic device, but is not limited thereto.Pre-burning lighting unit 6 connects power factor correction unit 2, IGBT discharge cell 4, central control unit 5.The input of current sensor 7 is connected between power factor correction unit 2 and the Power Conversion unit 3, and its output connects logic control element 52.The input of current sensor 8 connects the output of IGBT discharge cell 4, and its output connects logic control element 52.
Light current unit 9 adopts a light current plate, and its input connects the output of external power grid, the stabilizing low voltage power supply is provided for power factor correction unit 2, Power Conversion unit 3, IGBT discharge cell 4, central control unit 5 and pre-burning lighting unit 6.
In the foregoing description, external power grid flows to power factor correction unit 2 after the alternating current of 90V～264V is flowed to 1 filtering of anti-interference filtration circuit.Power factor correction unit 2 after exporting to Power Conversion unit 3 and carrying out power transfer, flows to 4 chargings of IGBT discharge cell with too high voltages/current-clamp to a stationary value of input.The IGBT discharge cell 4 that charging finishes can discharge to laser by its output OUT.
In said process, current sensor 7 is gathered the output current of power factor correction unit 2, afterwards sample rate current is flowed to logic control element 52, judges by logic control element 52 whether sample rate current is normal.If electric current is normal, logic control element 52 sends the electric current normal signal to CPU 51, and CPU 51 is sent a charging by logic control element 52 to Power Conversion unit 3 and opened instruction then.If there is over-current phenomenon avoidance, logic control element 52 sends to CPU 51 with the overcurrent signal, and CPU 51 sends an instruction of stablizing output current to power factor correction unit 2.
As shown in Figure 2, power factor correction unit 2 comprises a rectification soft starting circuit 21, a power factor correction auxiliary circuit 22 and a power factor correction lossless absorption circuit 23 that connects successively.The input of rectification soft starting circuit 21 connects the output of anti-interference filtration circuit 1, is direct current with filtered AC rectification.Rectification soft starting circuit 21 also connects light current unit 9, is used for to power factor correction unit 2 power supplies.
Power factor correction unit 2 comprises also that successively one of serial connection enables control circuit 24, a pwm unit 25, one drive circuit 26 and a protective circuit 27.Wherein protective circuit 27 is connected between the input of the output of power factor correction auxiliary circuit 22 and power factor correction lossless absorption circuit 23, and protective circuit 27 is used for power factor correction auxiliary circuit 22 is carried out current-limiting protection.The earth terminal earth connection GND of power factor correction auxiliary circuit 22 and power factor correction lossless absorption circuit 23, and the capacitor C 1 of a filtering and a grading resistor R1 are connected in parallel between the output and ground wire GND of power factor correction lossless absorption circuit 23, are used for the voltage/current of stable output.The output of power factor correction lossless absorption circuit 23 is connected with the input of Power Conversion unit 3, and power factor correction lossless absorption circuit 23 is connected the input of current sensor 7 with the contact of Power Conversion unit 3.The sample rate current input logic control unit 52 of current sensor 7, logic control element 52 carries out information interaction with CPU 51, and CPU 51 is instructed level instruction and a pulse-width modulation to flow to respectively and enabled control circuit 24 and pwm unit 25.
In the foregoing description, after anti-interference filtration circuit 1 is direct current with filtered alternating current by 21 rectifications of rectification soft starting circuit, by power factor correction auxiliary circuit 22 and power factor correction lossless absorption circuit 23, export to Power Conversion unit 3 more successively.
As shown in Figure 3, IGBT discharge cell 4 comprises a discharge loop 41, one protective circuits 42, one pulse-width modulation circuits 43, an IGBT drive circuit 44, a voltage treatment circuit 45 and a frequency modulation circuit 46.Discharge loop 41 comprises an IGBT lossless absorption circuit 47, and an IGBT of serial connection manages 48, one diode D1, an xenon flash lamp L, a resistance R 2 and a capacitor C 2 successively.Wherein, the source electrode of IGBT pipe 48 connects the input of IGBT lossless absorption circuit 47 and the anode of diode D1.The drain electrode of IGBT pipe 48 connects the output terminals A of Power Conversion unit 3, and output terminals A connects the positive plate of capacitor C 2, and the positive plate of capacitor C 2 is as the positive output end of discharge loop 41.The output B of IGBT lossless absorption circuit 47 is as the negative output terminal of IGBT discharge cell 4.Light current unit 9 provides the light current power supply for pulse-width modulation circuit 43, and voltage treatment circuit 45 is connected between light current unit 9 and the pulse-width modulation circuit 43, and input voltage is carried out voltage modulated.Frequency modulation circuit 46 is connected on the pulse-width modulation circuit 43, and input voltage is carried out frequency modulation(FM).Pulse-width modulation circuit 43 is the grid of series IGBT drive circuit 44 and IGBT pipe 48 successively.The input of current sensor 8 connects positive output end; the sample rate current input logic control unit 52 of current sensor 8; logic control element 52 carries out information interaction with CPU 61, and CPU 51 is instructed level instruction and a pulse-width modulation to flow to respectively and made protective circuit 42 and pulse-width modulation circuit 43.IGBT discharge cell 4 also comprises a current-limiting protection circuit 49, and IGBT pipe 48 is carried out current-limiting protection.
In the foregoing description, the high-frequency DC after Power Conversion unit 3 will be changed by the drain electrode of IGBT pipe 48, source electrode, diode D1, xenon flash lamp L, resistance R 2 and the capacitor C 2 of IGBT pipe 48, charges to discharge loop 41 successively.After charging finishes, capacitor C 2 begins discharge, electric current is from the output of capacitor C 2 positive plates, and by the drain electrode of terminal A, IGBT pipe 48, the source electrode and the IGBT lossless absorption circuit 47 of IGBT pipe 48, IGBT lossless absorption circuit 47 is with too high current-clamp to a stationary value successively.The IGBT discharge cell 4 that charging finishes can discharge to laser by its positive and negative output OUT.
In this process, current sensor 8 is gathered electric current at the positive output end place of discharge loop 41, flowing to logic control element 52 judges, if electric current is normal, logic control element 52 sends to CPU 51 with the electric current normal signal, CPU 51 sends a pre-burning and opens instruction to pre-burning lighting unit 6 then, and the charging instruction that sends charging intervals etc. by logic control element 52 is to Power Conversion unit 3 simultaneously, and Power Conversion unit 3 begins to 4 chargings of IGBT discharge cell; If there is over-current phenomenon avoidance, CPU 51 is sent an instruction of forbidding charging operations by logic control element 52 to Power Conversion unit 3,51 whiles of CPU are according to the electric current of current sensor 8 collections simultaneously, order IGBT discharge cell 4 is stablized the electric current of its output once more, the electric current of gathering until current sensor 8 just often, CPU 51 sends a charging by logic control element 52 and opens, Power Conversion unit 3 is given in the instruction in charging interval, after 4 chargings of IGBT discharge cell were given in Power Conversion unit 3, IGBT discharge cell 4 can discharge to laser safely.
As shown in Figure 4, pre-burning lighting unit 7 comprises a pre-burning main control unit 71, a PDM keyer 72, a frequency setting circuit 73, a pre-burning open circuit 74 and a power circuit 75.Wherein, pre-burning main control unit 71 adopts a pre-burning master control resonant circuit, its input connects the output and the logic control element 52 of power factor correction unit 2, and the output of pre-burning main control unit 71 connects the xenon flash lamp L in the IGBT discharge cell 4, with the energy size of control impuls xenon lamp L release.Pre-burning main control unit 71 carries out information interaction with PDM keyer 72, is provided with a reference voltage in the PDM keyer 72, this reference voltage be can firing pulse xenon lamp L voltage.PDM keyer 72 connects frequency setting circuit 73, pre-burning open circuit 74 and power circuit 75 respectively, and frequency setting circuit 73 flows to PDM keyer 72 with the voltage of input with after frequency modulates.The input of pre-burning open circuit 74 connects CPU 51, and its pre-burning that CPU 51 is sent is opened instruction and flowed to PDM keyer 72; The voltage of light current unit 9 is by power circuit 29 input PDM keyer 72 and pre-burning open circuits 74.
In the foregoing description, pre-burning open circuit 74 is opened instruction with the pre-burning that CPU 51 sends, and flows to PDM keyer 72 and pre-burning main control unit 71 successively.The output voltage that pre-burning main control unit 71 is gathered power factor correction unit 2 flows to PDM keyer 72.The voltage that reference voltage that PDM keyer 72 is inner with it and pre-burning main control unit 71 are gathered compares, when two magnitudes of voltage are unequal, frequency setting circuit 74 with the voltage modulated of pre-burning main control unit 71 output to the reference voltage size, with firing pulse xenon lamp L.When xenon flash lamp L lighted, pre-burning main control unit 71 became function signal by logic control element 62 to CPU 61 feedbacks one pre-burning; When xenon flash lamp L was unignited, frequency setting circuit 74 continued the voltage of pre-burning main control unit 71 outputs is modulated, until firing pulse xenon lamp L.
In the utility model method when operation,, at first, external power grid flows to power factor correction unit 2 after the alternating current of 90V～264V is flowed to anti-interference rectifier 1 filtering of power supply.Then, power factor correction unit 2 after exporting to Power Conversion unit 3 and carrying out power transfer, flows to 4 chargings of IGBT discharge cell with too high voltages/current-clamp to a stationary value of input.The IGBT discharge cell 4 that charging finishes can discharge to laser by its output OUT.
In the various embodiments described above; the structure of each parts, the position is set and connects and all can change to some extent; on the basis of technical solutions of the utility model,, should not get rid of outside protection range of the present utility model improvement and the equivalents that individual component is carried out.
Claims (7)
1, a kind of laser excitation power supply is characterized in that comprising: discharge main circuit, a sampling feedback control circuit and a light current unit; Described discharge main circuit comprises an anti-interference filtration circuit, a power factor correction unit, a Power Conversion unit and an IGBT discharge cell that is electrically connected successively; Described sampling feedback control circuit comprises a central control unit, a pre-burning lighting unit and two current sensors;
Wherein, described anti-interference filtration circuit is connected the output of external power grid with the input of light current unit;
Described central control unit connects described power factor correction unit, Power Conversion unit, IGBT discharge cell, pre-burning lighting unit and two current sensors respectively; Described pre-burning lighting unit connects described power factor correction unit, IGBT discharge cell, central control unit respectively; The input of one described current sensor is connected between described power factor correction unit and the Power Conversion unit, the input of another described current sense connects the output of described IGBT discharge cell, and the output of two described current sensors all connects described central control unit; Described light current unit is given described power factor correction unit, Power Conversion unit, IGBT discharge cell, central control unit and the power supply of pre-burning lighting unit simultaneously;
Two described current sensors are gathered described power factor correction unit and IGBT discharge cell output current, flow to described central control unit, described central control unit judges the electric current of described conveying, and controls described power factor correction unit and the IGBT discharge cell is stably exported according to judged result.
2, a kind of laser excitation power supply as claimed in claim 1, it is characterized in that: described central control unit comprises a CPU and a logic control element, and described CPU connects described power factor correction unit, Power Conversion unit, IGBT discharge cell, pre-burning lighting unit, each current sensor and light current unit respectively by described logic control element.
3, a kind of laser excitation power supply as claimed in claim 1 is characterized in that: described power factor correction unit comprises a rectification soft starting circuit, a power factor correction auxiliary circuit and a power factor correction lossless absorption circuit that connects successively; The input of described rectification soft starting circuit connects the output of described anti-interference filtration circuit;
Described power factor correction unit comprises also that successively one of serial connection enables control circuit, a pwm unit, one drive circuit and a protective circuit; Wherein said protective circuit is connected between the input of the output of described power factor correction auxiliary circuit and power factor correction lossless absorption circuit; The output of described power factor correction lossless absorption circuit is connected with the input of described Power Conversion unit, and described power factor correction lossless absorption circuit is connected the input of a described current sensor with the contact of described Power Conversion unit; The sample rate current of this current sensor is imported described logic control element, described logic control element and described CPU interactive information, described CPU flows to described control circuit and the pwm unit of enabling respectively with level instruction and pulse-width modulation instruction.
4, a kind of laser excitation power supply as claimed in claim 2 is characterized in that: described power factor correction unit comprises a rectification soft starting circuit, a power factor correction auxiliary circuit and a power factor correction lossless absorption circuit that connects successively; The input of described rectification soft starting circuit connects the output of described anti-interference filtration circuit;
Described power factor correction unit comprises also that successively one of serial connection enables control circuit, a pwm unit, one drive circuit and a protective circuit; Wherein said protective circuit is connected between the input of the output of described power factor correction auxiliary circuit and power factor correction lossless absorption circuit; The output of described power factor correction lossless absorption circuit is connected with the input of described Power Conversion unit, and described power factor correction lossless absorption circuit is connected the input of a described current sensor with the contact of described Power Conversion unit; The sample rate current of this current sensor is imported described logic control element, described logic control element and described CPU interactive information, described CPU flows to described control circuit and the pwm unit of enabling respectively with level instruction and pulse-width modulation instruction.
5, as claim 1 or 2 or 3 or 4 described a kind of laser excitation power supplies, it is characterized in that: described IGBT discharge cell comprises a discharge loop, one protective circuit, a pulse-width modulation circuit, an IGBT drive circuit, a voltage treatment circuit and a frequency modulation circuit;
Wherein, described protective circuit connects described pulse-width modulation circuit, IGBT drive circuit and discharge loop successively; Described pulse-width modulation circuit connects described voltage treatment circuit and frequency modulation circuit; The positive output end of described discharge loop connects the input of described Power Conversion unit and the input of a described current sensor; The sample rate current of this current sensor is imported described logic control element; described logic control element and described CPU interactive information, described CPU flows to described protective circuit and the pulse-width modulation circuit of making respectively with level instruction and pulse-width modulation instruction.
6, as claim 1 or 2 or 3 or 4 described a kind of laser excitation power supplies, it is characterized in that: the discharge loop in the described IGBT discharge cell comprises IGBT pipe, a diode, an xenon flash lamp, a resistance and an electric capacity that connects successively;
The positive output end of described discharge loop is the contact between the positive plate of the drain electrode of described IGBT pipe and described electric capacity; The input of described IGBT lossless absorption circuit is connected between the anode of the source electrode of described IGBT pipe and diode, and the output of described IGBT lossless absorption circuit is the negative output terminal of described discharge loop; Described IGBT drive circuit connects the grid of described IGBT pipe.
7, a kind of laser excitation power supply as claimed in claim 5 is characterized in that: the discharge loop in the described IGBT discharge cell comprises IGBT pipe, a diode, an xenon flash lamp, a resistance and an electric capacity that connects successively:
The positive output end of described discharge loop is the contact between the positive plate of the drain electrode of described IGBT pipe and described electric capacity; The input of described IGBT lossless absorption circuit is connected between the anode of the source electrode of described IGBT pipe and diode, and the output of described IGBT lossless absorption circuit is the negative output terminal of described discharge loop; Described IGBT drive circuit connects the grid of described IGBT pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820124782XU CN201336506Y (en) | 2008-12-17 | 2008-12-17 | Excitation power source for laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820124782XU CN201336506Y (en) | 2008-12-17 | 2008-12-17 | Excitation power source for laser |
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| CN201336506Y true CN201336506Y (en) | 2009-10-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU200820124782XU Expired - Lifetime CN201336506Y (en) | 2008-12-17 | 2008-12-17 | Excitation power source for laser |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102751771A (en) * | 2012-06-26 | 2012-10-24 | 苏州舜唐新能源电控设备有限公司 | Control method of electric car-mounted charging device |
| CN103050878A (en) * | 2012-12-22 | 2013-04-17 | 中国科学院安徽光学精密机械研究所 | High-accuracy voltage control method of quasi-molecular laser resonance type charging power supply |
| CN112715057A (en) * | 2018-09-13 | 2021-04-27 | 罗瓦克有限责任公司 | Method and apparatus for flash control |
-
2008
- 2008-12-17 CN CNU200820124782XU patent/CN201336506Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102751771A (en) * | 2012-06-26 | 2012-10-24 | 苏州舜唐新能源电控设备有限公司 | Control method of electric car-mounted charging device |
| CN102751771B (en) * | 2012-06-26 | 2014-12-31 | 苏州舜唐新能源电控设备有限公司 | Control method of electric car-mounted charging device |
| CN103050878A (en) * | 2012-12-22 | 2013-04-17 | 中国科学院安徽光学精密机械研究所 | High-accuracy voltage control method of quasi-molecular laser resonance type charging power supply |
| CN103050878B (en) * | 2012-12-22 | 2014-12-31 | 中国科学院安徽光学精密机械研究所 | High-accuracy voltage control method of quasi-molecular laser resonance type charging power supply |
| CN112715057A (en) * | 2018-09-13 | 2021-04-27 | 罗瓦克有限责任公司 | Method and apparatus for flash control |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20091028 Effective date of abandoning: 20081217 |