CN114630476A - Tube voltage adjustable control circuit for wall-mounted oral X-ray machine - Google Patents

Tube voltage adjustable control circuit for wall-mounted oral X-ray machine Download PDF

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CN114630476A
CN114630476A CN202210190030.8A CN202210190030A CN114630476A CN 114630476 A CN114630476 A CN 114630476A CN 202210190030 A CN202210190030 A CN 202210190030A CN 114630476 A CN114630476 A CN 114630476A
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circuit
tube voltage
ray machine
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黄学庆
冯锐
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Zhuhai Ruiying Technology Co ltd
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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05G—X-RAY TECHNIQUE
    • H05G1/00—X-ray apparatus involving X-ray tubes; Circuits therefor
    • H05G1/08—Electrical details
    • H05G1/26—Measuring, controlling or protecting
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • A61B6/50—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment specially adapted for specific body parts; specially adapted for specific clinical applications
    • A61B6/51—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment specially adapted for specific body parts; specially adapted for specific clinical applications for dentistry
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
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    • A61B6/54—Control of apparatus or devices for radiation diagnosis
    • A61B6/542—Control of apparatus or devices for radiation diagnosis involving control of exposure
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05G—X-RAY TECHNIQUE
    • H05G1/00—X-ray apparatus involving X-ray tubes; Circuits therefor
    • H05G1/08—Electrical details
    • H05G1/26—Measuring, controlling or protecting
    • H05G1/265—Measurements of current, voltage or power
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05G—X-RAY TECHNIQUE
    • H05G1/00—X-ray apparatus involving X-ray tubes; Circuits therefor
    • H05G1/08—Electrical details
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Abstract

The invention discloses a tube voltage adjustable control circuit for a wall-mounted oral X-ray machine, which comprises an upper computer, a DAC (digital-to-analog converter) control output circuit, a pulse width modulation circuit and a tube voltage KV feedback circuit, wherein the DAC control output circuit is connected with the upper computer; the upper computer is used for setting the gear parameters of the adjustable tube voltage KV; the DAC controls the output circuit, and the voltage of the corresponding output tube is set according to KV gear parameters set by the upper computer; the tube voltage KV feedback circuit receives a KV feedback signal of the wall-mounted oral X-ray handpiece, and the KV feedback signal is amplified and then input to a second input end of the pulse width modulation circuit; the pulse width modulation circuit outputs a high-frequency PWM driving signal with fixed frequency and adjustable pulse width, and the PWM driving signal can be input into the X-ray machine combined machine head to enable the X-ray machine combined machine head to output adjustable direct-current high voltage. The invention realizes the adjustment of the output tube voltage of the wall-mounted oral X-ray machine.

Description

Tube voltage adjustable control circuit for wall-mounted oral X-ray machine
Technical Field
The invention relates to the technical field of voltage management circuits of medical dental X-ray machines, in particular to a voltage adjustable control circuit for a tube of a wall-mounted oral X-ray machine.
Background
With the development of the oral industry, the number of domestic oral hospitals is increased, the demand of oral dental equipment is continuously increased, and the scale is enlarged; at present, the tube voltage of the oral cavity X-ray machine in the market adopts fixed one-step exposure parameters, for example, the fixed tube voltage parameter is 60KV, 65KV or 70 KV; the fixed one-step exposure mode is restricted to a certain extent in clinical use, and when different exposure doses are needed, the required exposure dose value can be achieved only by increasing or decreasing the exposure time, so that the shot image effect is not ideal; therefore, the fixed one-step exposure mode of the existing oral X-ray machine can not meet the clinical requirements of the current oral hospitals, and an exposure control mode with adjustable tube voltage parameters is urgently needed to replace the exposure control mode.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a tube voltage adjustable control circuit for a wall-mounted oral cavity X-ray machine, which solves the defect that the traditional oral cavity X-ray machine fixes one-step exposure.
In order to solve the problems, the technical scheme adopted by the invention is as follows:
the utility model provides a be used for wall-hanging oral cavity X ray machine tube voltage adjustable control circuit which characterized in that: the device comprises an upper computer, a DAC control output circuit, a pulse width modulation circuit and a tube voltage KV feedback circuit;
the upper computer is used for setting KV gear parameters of the adjustable tube voltage and transmitting the set KV gear parameters to the DAC control output circuit;
the DAC controls the output circuit, corresponds to a set value of the output tube voltage according to KV gear parameters set by an upper computer, and inputs the set value to a first input end of the pulse width modulation circuit;
the tube voltage KV feedback circuit receives a KV feedback signal of the wall-mounted oral X-ray handpiece, and the KV feedback signal is amplified and then input to a second input end of the pulse width modulation circuit;
the pulse width modulation circuit performs PWM modulation control on two signals input to two ends of the X-ray machine combination head, can output high-frequency PWM driving signals with adjustable frequency and/or pulse width, and the PWM driving signals can be input into the X-ray machine combination head to enable the X-ray machine combination head to output adjustable direct-current high voltage.
The DAC control output circuit comprises a main control unit and a DAC conversion unit connected with the main control unit, the main control unit outputs corresponding digital control signals to the DAC conversion unit according to the received adjustable tube voltage KV gear parameters, and the DAC conversion unit correspondingly outputs analog voltages matched with the adjustable tube voltage KV gear parameters.
The DAC control output circuit further comprises a first non-inverting amplifier, the input end of the first non-inverting amplifier is connected with the output end of the DAC conversion unit, and the output end of the first non-inverting amplifier is connected with the first input end of the pulse width modulation circuit and used for amplifying the electric signal output by the DAC control output circuit.
The tube voltage KV feedback circuit comprises a second equidirectional amplifier, the input end of the second equidirectional amplifier is connected with the KV feedback signal output end of the wall-mounted oral X-ray machine head, and the output end of the second equidirectional amplifier is connected with the second input end of the pulse width modulation circuit.
The pulse modulation chip comprises a first input end for receiving a first comparison signal and a second input end for receiving a second comparison signal, and is at least used for comparing with a sawtooth wave level inside the pulse modulation chip, outputting a PWM driving signal with fixed frequency and adjustable pulse width, and outputting adjustable PWM pulse width when the input voltage of the first input end or/and the second input end changes.
The pulse width modulation circuit comprises a pulse modulation chip, the pulse modulation chip comprises a third input end and a fourth input end, the third input end is used for being connected with a capacitor, the fourth input end is used for being connected with an adjustable resistor, the other end of the capacitor is used for being connected with a sawtooth wave voltage signal, and the pulse modulation chip is further used for adjusting the output frequency of the pulse width modulation circuit according to the change of the capacitor and the adjustable resistor.
The pulse width adjusting circuit can adopt a pulse modulation chip with the model number TL494CD or a pulse modulation chip with the model number SG 3525.
The pulse modulation chip further comprises a KV _ CON/exposure enabling signal receiving end, the KV _ CON/exposure enabling signal receiving end is connected with a main control of the wall-mounted type oral cavity X-ray machine through a switch control circuit, an exposure enabling signal is sent out by the main control, when the KV _ CON/exposure enabling signal is in a high level in a standby state, the PWM drive is locked, when exposure is carried out, the KV _ CON/exposure enabling signal is in a low level, and the PWM drive can achieve normal output.
The switch control circuit comprises a switch module, wherein the control end of the switch module is connected with the main control of the wall-mounted oral X-ray machine, and the output end of the switch module is connected with the KV _ CON/exposure enabling signal receiving end of the pulse modulation chip.
Compared with the prior art, the beneficial effects of the technical scheme are that:
the technical scheme can realize the gear adjustment of the voltage of the output tube of the wall-mounted oral X-ray machine;
meanwhile, the output of the voltage KV of the control tube can be remotely adjusted by connecting the upper computer, the mode of adjusting the voltage parameters of the tube by a traditional panel key type is changed, and the advantages of the device in clinical use and operation of hospitals are remarkable.
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Drawings
FIG. 1 is a schematic circuit diagram of the present embodiment;
fig. 2 is a schematic diagram of the tube voltage KV feedback circuit of the present embodiment.
Detailed Description
As shown in fig. 1 and 2, a tube voltage adjustable control circuit for a wall-mounted oral X-ray machine comprises an upper computer, a DAC control output circuit, a pulse width modulation circuit and a tube voltage KV feedback circuit;
the upper computer is used for setting KV gear parameters of the adjustable tube voltage and transmitting the set KV gear parameters to the DAC control output circuit;
the DAC controls the output circuit, corresponds to a set value of the output tube voltage according to KV gear parameters set by an upper computer, and inputs the set value to a first input end of the pulse width modulation circuit;
the tube voltage KV feedback circuit receives a KV feedback signal of the wall-mounted oral X-ray handpiece, and the KV feedback signal is amplified and then input to a second input end of the pulse width modulation circuit;
the pulse width modulation circuit performs PWM modulation control on two signals input to two ends of the X-ray machine combination head, can output high-frequency PWM driving signals with adjustable frequency and/or pulse width, and the PWM driving signals can be input into the X-ray machine combination head to enable the X-ray machine combination head to output adjustable direct-current high voltage.
The DAC control output circuit comprises a main control unit and a DAC conversion unit connected with the main control unit, the main control unit outputs corresponding digital control signals to the DAC conversion unit according to the received adjustable tube voltage KV gear parameter of the upper computer, and the DAC conversion unit correspondingly outputs analog voltage matched with the adjustable tube voltage KV gear parameter.
The DAC control output circuit further comprises a first non-inverting amplifier, the input end of the first non-inverting amplifier is connected with the output end of the DAC conversion unit, and the output end of the first non-inverting amplifier is connected with the first input end of the pulse width modulation circuit and used for amplifying the electric signal output by the DAC control output circuit.
The tube voltage KV feedback circuit comprises a second equidirectional amplifier, the input end of the second equidirectional amplifier is connected with the KV feedback signal output end of the wall-mounted oral X-ray machine head, and the output end of the second equidirectional amplifier is connected with the second input end of the pulse width modulation circuit.
The pulse modulation chip comprises a first input end for receiving a first comparison signal and a second input end for receiving a second comparison signal, and is at least used for comparing with a sawtooth wave level inside the pulse modulation chip, outputting a PWM driving signal with fixed frequency and adjustable pulse width, and outputting adjustable PWM pulse width when the input voltage of the first input end or/and the second input end changes.
The pulse width modulation circuit comprises a pulse modulation chip, the pulse modulation chip comprises a third input end and a fourth input end, the third input end is used for being connected with a capacitor, the fourth input end is used for being connected with an adjustable resistor, the other end of the capacitor is used for being connected with a sawtooth wave voltage signal, and the pulse modulation chip is further used for adjusting the output frequency of the pulse width modulation circuit according to the change of the capacitor and the adjustable resistor.
The pulse modulation chip further comprises a KV _ CON/exposure enabling signal receiving end, the KV _ CON/exposure enabling signal receiving end is connected with a main control of the wall-mounted type oral cavity X-ray machine through a switch control circuit, an exposure enabling signal is sent out by the main control, when the KV _ CON/exposure enabling signal is in a high level in a standby state, the PWM drive is locked, when exposure is carried out, the KV _ CON/exposure enabling signal is in a low level, and the PWM drive can achieve normal output.
The switch control circuit comprises a switch module, the control end of the switch module is connected with the main control of the wall-mounted oral cavity X-ray machine, and the output end of the switch module is connected with the KV _ CON/exposure enabling signal receiving end of the pulse modulation chip.
Most pulse width modulation circuits in the prior art can be used as the pulse width modulation circuit in the present embodiment, and for the purpose of describing the present embodiment in detail, a pulse modulation chip with a model number TL494CD or a pulse modulation chip with a model number SG3525 can be used here. The following description is provided with respect to a pulse modulation chip using TL494 CD.
On one hand, the upper computer controls to output a KV _ SET value required by corresponding tube voltage, the KVSET controls an inverting input end IN & lt- & gt of a pulse width modulation circuit TL494, a KV feedback signal EP _ F of an X-ray machine combined head controls an non-inverting input end IN & lt + & gt of the pulse width modulation circuit TL494, then the PWM pulse width modulation control of the TL494 is carried out to realize closed-loop regulation and output a stable tube voltage KV value, the DAC controls an output circuit to correspondingly output different KV _ SET voltages according to the KV gear parameter SET by the upper computer, so that different tube voltage values are output, and the function of adjusting the tube voltage of the wall-mounted oral X-ray machine is realized.
An oscillator with adjustable frequency is arranged in the TL494, the frequency output can be changed by adjusting the resistance value of a resistor RW1 and the capacity of a capacitor C36, and the output waveform is triangular wave. The maximum frequency output is 300kHz, the triangular wave frequency of the high-voltage generator is set to be 120kHz, and the triangular wave frequency is as follows: since the capacitance of the capacitor C36 is fixed, the frequency can be adjusted and set by adjusting the resistance of the RW1 potentiometer, where f is 1.1/RC.
Specifically, 3 gears can be selected by the upper computer IN the embodiment, 60KV is selected on the upper computer (SDK), the DAC port of the single chip microcomputer (C8051F040) corresponds to the SET value of the output tube voltage, and after passing through the IN-phase amplifier (LM324), KV _ SET voltage is 6V and is input to the inverting input terminal IN-of the pulse width modulation circuit (TL494) by KVSET;
selecting 60KV on an upper computer (SDK) interface, outputting 3V direct current voltage at a DAC end of the single chip microcomputer through a DA conversion function of the MCU single chip microcomputer, and after passing through the LM324 in-phase amplifier, setting the KV _ SET voltage to be 6V and setting the corresponding actually output tube voltage value to be 60 KV;
selecting 65KV on an upper computer (SDK) interface, outputting 3.25V direct current voltage at a DAC end of the single chip microcomputer through a DA conversion function of the MCU single chip microcomputer, and after passing through the LM324 in-phase amplifier, enabling the KV _ SET voltage to be 6.5V and enabling the corresponding actually output tube voltage value to be 65 KV;
selecting 60KV on an upper computer (SDK) interface, outputting 3.5V direct current voltage at a DAC end of the single chip microcomputer through a DA conversion function of the MCU single chip microcomputer, and after passing through the LM324 in-phase amplifier, enabling the KV _ SET voltage to be 7V and enabling the corresponding actually output tube voltage value to be 70 KV;
specific transistor voltage regulation parameters correspond to the following:
Figure BDA0003524218650000061
IN addition, after the KV feedback signal of the X-ray machine combined head passes through the IN-phase amplifier (LM324), the voltage of EP _ F is 6V, and the voltage is input into the IN-phase input end IN + of the pulse width modulation circuit (TL494) through EP _ F,
KV _ SET voltage and EP _ F voltage are controlled by PWM modulation of TL494, high-frequency PWM driving signals with fixed output frequency and adjustable pulse width are input into a primary stage of a high-voltage transformer of the X-ray machine combined head, a secondary stage of the high-voltage transformer outputs 5KV high-frequency alternating current waveform, then rectification is carried out through a voltage doubling circuit (12 times voltage), 60KV direct current high voltage is output, KV closed-loop regulation is realized, and a stable tube voltage KV value is output;
the MCU system outputs different KV _ SET voltages by adjusting the KV gear parameters of the upper computer tube voltage, so that corresponding different tube voltage values are output, and the function of adjusting the tube voltage of the wall-mounted oral X-ray machine is realized;
the KV sampling proportion can be adjusted by changing the sampling resistance value (the sampling proportion of the tube voltage in the embodiment is 1V: 10 KV);
KV reference voltage signal KV _ SET is input into an error amplifier inverting input end IN-IN of TL494, KV feedback signal EP _ F is input into an error amplifier inverting input end IN +, an operational amplifier output end is an FBK pin of TL494, a PI link is formed through an RC link, operational amplifier output FBK is a direct current output level, the output is a high level IN an unexposed state, after exposure starts, FBK signals pass through loop adjustment according to KV _ SET and EP _ F, the output level is reduced along with the FBK signals, the FBK signals are compared with triangular wave levels IN TL494, and finally PWM driving signals DRV _1 and DRV _2 with fixed frequency and adjustable pulse width are output.
Through the analysis, the embodiment can output the PWM driving waveform with a fixed frequency.
In addition, PWM pulse width adjustment can be realized, because KV is in a closed-loop control mode, when KV _ SET SET voltage and EP _ F value of high-voltage feedback sampling of the X-ray machine combined head change, the output level can be adjusted through an internal operational amplifier of a pulse width modulation circuit (TL494), PWM pulse width is further adjusted, closed-loop control is realized, and the output actual KV corresponds to the SET KV _ SET value.
It should be further noted that the pulse width modulation circuit further includes a KV _ CON/exposure enable signal receiving terminal, the KV _ CON/exposure enable signal receiving terminal is connected to the main control of the wall-hung oral X-ray machine through a switch control circuit, the main control sends an exposure enable signal, and the output or locking of the PWM signal can be controlled, the switch control circuit includes a switch module, the control terminal of the switch module is connected to the main control of the wall-hung oral X-ray machine, and the output terminal is connected to 4 pins of the pulse modulation chip TL 494. The switch module comprises a switch group consisting of a triode Q2 and a triode Q3, wherein in a standby state, a KV _ CON/exposure enabling signal is at a high level, Q2 and Q3 are conducted, a TL494 pin 4 is at a high level, and PWM driving is locked; when exposure is performed, the KV _ CON/exposure enable signal is low, Q2 and Q3 are cut off, the 4 th pin of TL494 is low, normal output can be realized by PWM driving, and the voltage value of the 4 th pin of TL494 is the dead time of the PWM driving waveform at the time.
The output tube voltage of the wall-mounted oral X-ray machine in the embodiment is adjustable in three grades of 60KV, 65KV and 70KV, and MA is fixed to 5 MA; meanwhile, by connecting the upper computer and controlling the output of the voltage KV of the control tube through the instruction of the standard RS232 communication interface, the embodiment can realize the remote adjustment and control of the output of the tube voltage KV, change the mode of adjusting the voltage parameter of the tube by a traditional panel key type, and has remarkable advantages in the aspects of clinical use and operation of hospitals.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.

Claims (9)

1. The utility model provides a be used for adjustable control circuit of wall-hanging oral cavity X ray machine tube voltage which characterized in that: the device comprises an upper computer, a DAC control output circuit, a pulse width modulation circuit and a tube voltage KV feedback circuit;
the upper computer is used for setting KV gear parameters of the adjustable tube voltage and transmitting the set KV gear parameters to the DAC control output circuit;
the DAC controls the output circuit, corresponds to a set value of the output tube voltage according to KV gear parameters set by an upper computer, and inputs the set value to a first input end of the pulse width modulation circuit;
the tube voltage KV feedback circuit receives a KV feedback signal of the wall-mounted oral cavity X-ray machine head, and the KV feedback signal is amplified and then input to a second input end of the pulse width modulation circuit;
the pulse width modulation circuit performs PWM modulation control on two signals input to two ends of the X-ray machine combination head, can output high-frequency PWM driving signals with adjustable frequency and/or pulse width, and the PWM driving signals can be input into the X-ray machine combination head to enable the X-ray machine combination head to output adjustable direct-current high voltage.
2. The adjustable control circuit of tube voltage for wall-mounted oral X-ray machine of claim 1, wherein: the DAC control output circuit comprises a main control unit and a DAC conversion unit connected with the main control unit, the main control unit outputs corresponding digital control signals to the DAC conversion unit according to the received adjustable tube voltage KV gear parameters, and the DAC conversion unit correspondingly outputs analog voltages matched with the adjustable tube voltage KV gear parameters.
3. The adjustable control circuit of tube voltage for wall-mounted oral X-ray machine of claim 2, wherein: the DAC control output circuit further comprises a first non-inverting amplifier, the input end of the first non-inverting amplifier is connected with the output end of the DAC conversion unit, and the output end of the first non-inverting amplifier is connected with the first input end of the pulse width modulation circuit and used for amplifying the electric signal output by the DAC control output circuit.
4. The adjustable control circuit of tube voltage for wall-mounted oral X-ray machine of claim 1, wherein: the tube voltage KV feedback circuit comprises a second equidirectional amplifier, the input end of the second equidirectional amplifier is connected with the KV feedback signal output end of the wall-mounted oral X-ray machine head, and the output end of the second equidirectional amplifier is connected with the second input end of the pulse width modulation circuit.
5. The adjustable control circuit of tube voltage for wall-mounted oral X-ray machine of claim 1, wherein: the pulse modulation chip comprises a first input end for receiving a first comparison signal and a second input end for receiving a second comparison signal, and is at least used for comparing with a sawtooth wave level inside the pulse modulation chip, outputting a PWM driving signal with fixed frequency and adjustable pulse width, and outputting adjustable PWM pulse width when the input voltage of the first input end or/and the second input end changes.
6. The adjustable control circuit of tube voltage for wall-mounted oral X-ray machine of claim 5, wherein: the pulse width modulation circuit comprises a pulse modulation chip, the pulse modulation chip comprises a third input end and a fourth input end, the third input end is used for being connected with a capacitor, the fourth input end is used for being connected with an adjustable resistor, the other end of the capacitor is used for being connected with a sawtooth wave voltage signal, and the pulse modulation chip is further used for adjusting the output frequency of the pulse width modulation circuit according to the change of the capacitor and the adjustable resistor.
7. The adjustable control circuit of tube voltage for wall-mounted oral X-ray machine of claim 6, wherein: the pulse width adjusting circuit can adopt a pulse modulation chip with the model number TL494CD or a pulse modulation chip with the model number SG 3525.
8. The adjustable control circuit of tube voltage for wall-mounted oral X-ray machine of claim 6, wherein: the pulse modulation chip further comprises a KV _ CON/exposure enabling signal receiving end, the KV _ CON/exposure enabling signal receiving end is connected with a main control unit of the wall-mounted type oral cavity X-ray machine through a switch control circuit, the main control unit sends out an exposure enabling signal, when the KV _ CON/exposure enabling signal is in a high level in a standby state, the PWM drive is locked, when exposure is carried out, the KV _ CON/exposure enabling signal is in a low level, and the PWM drive can achieve normal output.
9. The adjustable control circuit of tube voltage for wall-mounted oral X-ray machine of claim 8, wherein: the switch control circuit comprises a switch module, the control end of the switch module is connected with the main control of the wall-mounted oral cavity X-ray machine, and the output end of the switch module is connected with the KV _ CON/exposure enabling signal receiving end of the pulse modulation chip.
CN202210190030.8A 2022-02-28 2022-02-28 Tube voltage adjustable control circuit for wall-mounted oral X-ray machine Pending CN114630476A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115134204A (en) * 2022-07-08 2022-09-30 海能达通信股份有限公司 Modulation circuit, modulation calibration method, and modulation system
CN116961380A (en) * 2023-06-19 2023-10-27 珠海艾珂斯科技有限公司 Control circuit and method with high-frequency inverter power supply output for X-ray machine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115134204A (en) * 2022-07-08 2022-09-30 海能达通信股份有限公司 Modulation circuit, modulation calibration method, and modulation system
CN115134204B (en) * 2022-07-08 2023-06-09 海能达通信股份有限公司 Modulation circuit, modulation calibration method and modulation system
CN116961380A (en) * 2023-06-19 2023-10-27 珠海艾珂斯科技有限公司 Control circuit and method with high-frequency inverter power supply output for X-ray machine
CN116961380B (en) * 2023-06-19 2024-05-03 珠海艾珂斯科技有限公司 Control circuit and method with high-frequency inverter power supply output for X-ray machine

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