CN219287389U - Compatible high-power demagnetizing power supply - Google Patents
Compatible high-power demagnetizing power supply Download PDFInfo
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- CN219287389U CN219287389U CN202223538707.7U CN202223538707U CN219287389U CN 219287389 U CN219287389 U CN 219287389U CN 202223538707 U CN202223538707 U CN 202223538707U CN 219287389 U CN219287389 U CN 219287389U
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Abstract
The utility model relates to a compatible high-power demagnetization power supply, including main alternating current power supply and first rectifier module, main alternating current power supply's output with first rectifier module's power input is connected, still includes core control module, transformation element and miniwatt rectifier module, main alternating current power supply's output with transformation element's power input is connected, transformation element's power output with miniwatt rectifier module's power input is connected, miniwatt rectifier module's controlled end with core control module's pulse signal end is connected, when meetting the load of miniwatt or carrying the load that power is less, can more accurately output the miniwatt power supply steadily to can eliminate the magnetism that the naval vessel carried better, avoid the magnetosensitive instrument to receive the influence, the naval vessel operation is more stable.
Description
[ field of technology ]
The application relates to the technical field of naval vessel equipment, in particular to a compatible high-power demagnetizing power supply.
[ background Art ]
The magnetic field of the warships made of steel can be gradually accumulated under the action of the external and internal forces such as the earth magnetic force and the machine operation, which is a fatal threat to the warships in the longitudinal and transverse ocean, so that the warship demagnetizing technology is a technology which is used for preventing weapons from being damaged in water and is necessary for naval armies in various countries, the demagnetizing operation is to remove the residual magnetic field on the metal shell of the warships so as to prevent the warships from being monitored by other submarines and the water warships in the operation process, and the demagnetizing operation can also lead the armies to be protected from being attacked by the mines of the magnetic fuze, however, when the existing high-power demagnetizing power supply is used for carrying out the demagnetizing operation, the current transformer of the warships is too large in selection ratio, the sampling deviation is too large when the low-power output is carried out, so that the demagnetizing effect is extremely poor, and the influence on some magnetically sensitive tools such as a compass is very large.
[ utility model ]
In order to avoid the influence on a magnetosensitive tool caused by overlarge sampling deviation in the process of outputting small current when a high-power demagnetizing power supply encounters a small magnetic load or a load with smaller bearing power during demagnetizing operation. According to the utility model, a branch is led out from the alternating current power supply, the voltage is reduced through the voltage transformation element, and the rectification is performed by the low-power rectification module, so that the low-power supply with higher precision and stronger stability is output.
The utility model provides the following scheme:
the utility model provides a compatible high-power demagnetization power supply, includes main alternating current power supply and first rectifier module, main alternating current power supply's output with first rectifier module's power input is connected, still includes core control module, vary voltage element and miniwatt rectifier module, main alternating current power supply's output with vary voltage element's power input is connected, vary voltage element's power output with miniwatt rectifier module's power input is connected, miniwatt rectifier module's controlled end with core control module's pulse signal end is connected.
The high-power demagnetizing power supply comprises a low-power rectifying module, wherein the low-power rectifying module comprises a first common-cathode switch tube group, a first common-anode switch tube group, a second common-cathode switch tube group and a second common-anode switch tube group, each anode end of the first common-cathode switch tube group is respectively connected with each cathode end of the first common-anode switch tube in a one-to-one correspondence manner, each anode end of the second common-cathode switch tube group is respectively connected with each cathode end of the second common-anode switch tube group in a one-to-one correspondence manner, the common anode ends of the first common-anode switch tube group and the common anode ends of the second common-anode switch tube group are connected in parallel and are the negative ends of the low-power rectifying module, and the common cathode end of the first common-cathode switch tube group is the first positive end of the low-power rectifying module.
The high-power demagnetizing power supply comprises a main alternating-current power supply, a transformer element and a protection module, wherein the protection module is connected between the main alternating-current power supply and the transformer element and comprises an air switch QF1 and an alternating-current contactor KM5, three input ends of the air switch QF1 are respectively connected with three-phase wires of the main alternating-current power supply, three output ends of the air switch QF1 are respectively connected with three input ends of a main contact of the alternating-current contactor KM5, a fuse F17, a fuse F18 and a fuse F19 are respectively connected between the three output ends of the main contact of the alternating-current contactor KM5 and the three-phase input ends of the primary winding of the transformer element, a voltage transformer CT5 is connected between the fuse F17 and the primary winding of the transformer element, and a voltage transformer CT6 is connected between the fuse F19 and the primary winding of the transformer element.
The high-power demagnetizing power supply further comprises a direct-current power supply and a current sampling module, wherein a current transformer is connected between the low-power rectifying module and the direct-current power supply, the signal output end of the current transformer is connected with the signal input end of the current sampling module, and the signal output end of the current sampling module is connected with the current sampling end of the core control module.
The high-power degaussing power supply comprises a resistor R2, a resistor R66, a first operational amplifier chip U2 and a second operational amplifier chip U7, wherein the first end of the resistor R2 is a signal input end of the current sampling module, a resistor R6 is connected between the second end of the resistor R2 and a first same phase end of the first operational amplifier chip U2, the resistor R7 is connected between the first same phase end of the first operational amplifier chip U2 and the ground, a capacitor C1 is connected between the first same phase end of the first operational amplifier chip U2 and the ground, a resistor R35 is connected between the first inverting end of the first operational amplifier chip U2 and the first output end, a resistor R39 is connected between the second inverting end of the first operational amplifier chip U2 and the ground, a resistor R56 is connected between the first inverting end of the first operational amplifier chip U2 and the second operational amplifier chip U7, a resistor R66 is connected between the first inverting end of the first operational amplifier chip U2 and the first output end of the second operational amplifier chip U7, a resistor R51 is connected between the first inverting end of the first operational amplifier chip U2 and the first inverting end of the first operational amplifier chip U7, a resistor R10 is connected between the second inverting end of the first operational amplifier chip U2 and the first inverting end of the first operational amplifier chip U7 and the first output end of the first operational amplifier chip, a resistor R51 is connected between the first inverting end of the first operational amplifier chip U7 and the first inverting end of the first operational amplifier chip, and the resistor R56 is connected between the first inverting end of the first operational amplifier chip U7 is connected between the first inverting end of the first operational amplifier chip U2 and the first output end of the first operational amplifier chip U2 and the first resistor is.
The transformer element is provided with a thermal relay for preventing the transformer from overheating.
The high-power demagnetizing power supply comprises a first rectifying module, a second rectifying module, a third common-cathode switch tube group and a third common-anode switch tube group, wherein all anode ends of the third common-cathode switch tube group are respectively connected with all cathode ends of the third common-anode switch tube group in a one-to-one correspondence mode, the common anode end of the third common-anode switch tube group is the positive end of the first rectifying module, and the common cathode end of the third common-cathode switch tube group is the negative end of the first rectifying module.
The high-power demagnetizing power supply further comprises a standby power supply, wherein the main alternating current power supply and the standby power supply are all three-phase three-wire 650V alternating current power supplies.
The high-power demagnetizing power supply further comprises a second rectifying module, wherein the power input end of the second rectifying module is connected with the output end of the standby power supply, the second rectifying module comprises a fourth common cathode switch tube group and a fourth common anode switch tube group, each anode end of the fourth common cathode switch tube group is respectively connected with each cathode end of the fourth common anode switch tube group in a one-to-one correspondence manner, the common cathode end of the fourth common cathode switch tube group is the positive end of the second rectifying module, and the common anode end of the fourth common anode switch tube group is the negative end of the second rectifying module.
According to the embodiment of the utility model, the voltage is reduced by leading out one branch on the alternating current power supply, the voltage is reduced by arranging the voltage transformation element, the rectification treatment is carried out by the low-power rectification module, the controlled end of the rectification module is controlled by the core control module, and the stable low-power supply can be more accurately output when a small-magnetic load or a load with smaller bearing power is encountered, so that the magnetism carried by a ship can be better eliminated, the influence of a magneto-sensitive appliance is avoided, and the ship operates more stably.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings that are required to be used in the description of the embodiments will be briefly described below.
FIG. 1 is a block diagram of a connection of a compatible high-power degaussing power supply in accordance with an embodiment of the present utility model;
FIG. 2 is an overall schematic diagram of a compatible high-power degaussing power supply in accordance with an embodiment of the present utility model;
fig. 3 is a schematic diagram of a current sampling module according to an embodiment of the utility model.
[ detailed description ] of the utility model
Referring to fig. 1 to 3, the present embodiment provides a compatible high-power demagnetizing power supply, which includes a main ac power supply 1 and a first rectifying module 2, wherein an output end of the main ac power supply 1 is connected with a power input end of the first rectifying module 2, and further includes a core control module, a voltage transformation element 6 and a low-power rectifying module 5, an output end of the main ac power supply 1 is connected with a power input end of the voltage transformation element 6, a power output end of the voltage transformation element 6 is connected with a power input end of the low-power rectifying module 5, and a controlled end of the low-power rectifying module 5 is connected with a pulse signal end of the core control module.
According to the embodiment, the voltage is reduced by the voltage-converting element 6 through the branch circuit led out from the alternating-current power supply, the rectification treatment is carried out by the low-power rectification module 5, the controlled end of the rectification module is controlled by the core control module, and the stable low-power supply can be more accurately output when a small-magnetic load or a load with smaller bearing power is encountered, so that magnetism carried by a ship can be better eliminated, the influence of a magneto-sensitive appliance is avoided, and the ship operates more stably.
The chip in the core control module in this embodiment is a GD32 series singlechip, and domestic 32 is a singlechip, wherein GD32F307xx is adopted, and the chip belongs to a main stream product of GD32 singlechip family. The novel 32-bit general microcontroller based on ARMCortex-M4RISC kernel has the best cost performance in the aspects of enhancing processing capacity, reducing power consumption and peripheral equipment. The Cortex-M4 core function realizes a complete set of DSP instructions to solve the requirement of digital signal control, and can better meet the control and signal processing capability with high efficiency and easy use. It also provides a Memory Protection Unit (MPU) and powerful tracking techniques to enhance application security and advanced debug support. Its operating frequency is 120MHz and the flash access is in zero wait state to obtain the highest efficiency.
The core control module in the embodiment is based on the GD32 chip, and is provided with a set of phase control unit of the DSP, and the phase control unit can effectively control the rectifying module, and the digitized control unit has high control efficiency and high precision.
As a preferred solution, but not limited to, the low-power rectifying module 5 includes a first common-cathode switch tube group, a first common-anode switch tube group, a second common-cathode switch tube group, and a second common-anode switch tube group, where each anode end of the first common-cathode switch tube group is connected to each cathode end of the first common-anode switch tube respectively in a one-to-one correspondence manner, each anode end of the second common-cathode switch tube group is connected to each cathode end of the second common-anode switch tube group respectively in a one-to-one correspondence manner, and the common anode ends of the first common-anode switch tube group and the second common-anode switch tube group are connected in parallel and are the negative electrode ends of the low-power rectifying module 5, and the common cathode end of the first common-cathode switch tube group is the first positive electrode end of the low-power rectifying module 5, and the common cathode end of the second common-cathode switch tube group is the second positive electrode end of the low-power rectifying module 5.
In this embodiment, the first common-cathode switch tube group and the second common-cathode switch tube group are all composed of three thyristors, the cathodes of the three thyristors are connected in parallel to form a common cathode end, the first common-anode switch tube group and the second common-anode switch tube group are all composed of three thyristors, and the anodes of the three thyristors are connected in parallel to form a common anode end.
In this embodiment, the thyristor model is specifically TN4050-12PI, two ends of the thyristor are connected with an RC filter, and the RC filter is specifically formed by connecting a capacitor and a resistor in series.
In this embodiment, thyristors are ordered according to numbers, and the singular numbers are distributed in common cathode groups and the plural numbers are distributed in common anode groups, wherein 1 and 4 are connected, 3 and 6 are connected, and 5 and 2 are connected. In order to make the output current more stable, the output ramp wave is more gentle.
In the embodiment, a twelve-pulse signal rectification mode is adopted, so that thyristor groups in the scheme are divided into four groups, wherein common positive ends are connected in parallel and are output negative ends, and in order to enable current to filter clutter, the common negative electrode groups adopt three-leg inductors to carry out shunt filtering and recombination, so that the power quality is better.
As a preferred solution, but not limited to, a protection module 7 is connected between the main ac power source 1 and the transformer element 6, the protection module 7 includes an air switch QF1 and an ac contactor KM5, three input ends of the air switch QF1 are respectively connected with three-phase wires of the main ac power source 1, three output ends of the air switch QF1 are respectively connected with three input ends of a main contact of the ac contactor KM5, a fuse F17, a fuse F18 and a fuse F19 are respectively connected between three output ends of the main contact of the ac contactor KM5 and three-phase input ends of a primary winding of the transformer element 6, a voltage transformer CT5 is connected between the fuse F17 and the primary winding of the transformer element 6, and a voltage transformer CT6 is connected between the fuse F19 and the primary winding of the transformer element 6.
In order to avoid dangerous situations caused by faults of the low-power supply, the embodiment better ensures the electricity utilization safety, the protection module 7 is additionally arranged between the main alternating-current power supply 1 and the voltage transformation element 6, the on-off of the whole low-power rectification module 5 is controlled through the air switch QF1, the contactor is used for carrying out second-stage control, the on-off of the power supply can be effectively ensured, meanwhile, the false triggering situation can be effectively prevented, the high voltage is converted into the low voltage through the voltage transformer, the connection is carried out through the core control module, the voltage situation of the circuit passing can be better read, and the circuit can be better protected.
As a preferred scheme, but not limited to, the device further comprises a direct current power supply 4 and a current sampling module, wherein a current transformer is connected between the low-power rectifying module 5 and the direct current power supply 4, a signal output end of the current transformer is connected with a signal input end of the current sampling module, and a signal output end of the current sampling module is connected with a current sampling end of the core control module.
In this implementation, in order to confirm that the power of output is accurate and stable, adopt and connect current transformer between the power output of miniwatt rectification module 5 and DC power supply 4, send the current sampling module again to the sampling detection after becoming small with the electric current on the circuit through current transformer, can confirm the stability of power better more accurately, and through the mode of closed loop, the electric current of power output is more accurate.
In this embodiment, four control switches are provided at the output end of the dc power supply 4, and are controlled by an ac contactor with a protector, when current flows in the forward direction, ac contactors KM1 and KM4 are closed, and when current flows in the reverse direction, ac contactors KM2 and KM3 are closed, so that no matter which direction of current is required by the ship, the output can be performed well, and thus the demagnetizing operation is performed.
As a preferred scheme but not limited thereto, the current sampling module includes a resistor R2, a resistor R66, a first operational amplifier chip U2 and a second operational amplifier chip U7, wherein a first end of the resistor R2 is a signal input end of the current sampling module, a resistor R6 is connected between a second end of the resistor R2 and a first in-phase end of the first operational amplifier chip U2, the resistor R7 is connected between the first in-phase end of the first operational amplifier chip U2 and the ground, a capacitor C1 is connected between the first in-phase end of the first operational amplifier chip U2 and the ground, a resistor R35 is connected between a first inverting end of the first operational amplifier chip U2 and the first output end of the first operational amplifier chip U2, a resistor R39 is connected between the second inverting end of the first operational amplifier chip U2 and the second output end of the first operational amplifier chip U2, a resistor R56 is connected between the first inverting end of the first operational amplifier chip U2 and the second in-phase end of the second operational amplifier chip U7, a resistor R66 is connected between the first inverting end of the first operational amplifier chip U2 and the first output end of the first operational amplifier chip U7 and the first output end of the second operational amplifier chip U7, a resistor R35 is connected between the first inverting end of the first operational amplifier chip U7 and the first output end of the first operational amplifier chip U7 and the second output end of the first operational amplifier chip U7, a resistor R56 is connected between the first inverting end of the first output end of the first operational amplifier chip U2 and the first resistor R56 is connected between the first resistor R56.
The embodiment adopts two dual-channel operational amplifier chips to sample and process the current signal, wherein the first operational amplifier chip U2 comprises a U2A part and a U2B part, samples positive and negative poles respectively and operational amplifies the signal, and then sends the signal to the second operational amplifier chip U7 to perform secondary sampling and secondary processing, and finally sends the processed signal to the core control module to process, so that whether the low-power rectifying module 5 is normal or not can be stably and efficiently detected, and the stability of the output current is better ensured.
As a preferred solution, but not limiting, the transformer element 6 is provided with a thermal relay for preventing overheating of the transformer.
The transformer element 6 in this embodiment is specifically a three-phase transformer, and its transformation ratio is 1 to 10, that is, in this embodiment, the input voltage is 650V, the output voltage is 65V, and the transformer has two groups of output coils, each group is three-phase three-wire, in order to prevent unnecessary faults of the circuit in the step-down process, avoid the long-term overcurrent condition of the transformer, connect the thermal relay on the transformer element 6, and can timely disconnect the circuit under the condition of overheat, thereby protecting the transformer from damage.
As a preferred solution, but not limited to, the first rectifying module 2 includes a third common cathode switch tube group and a third common anode switch tube group, where each anode end of the third common cathode switch tube group is connected to each cathode end of the third common anode switch tube group in a one-to-one correspondence manner, a common anode end of the third common anode switch tube group is a positive end of the first rectifying module 2, and a common cathode end of the third common cathode switch tube group is a negative end of the first rectifying module 2.
In this embodiment, when the demagnetizing power source works normally, the first rectifying module 2 is used as a main working circuit, a six-pulse rectifying mode is adopted, the G poles of the thyristors are respectively and correspondingly connected to the phase control unit, the phase control unit is uniformly controlled to process, when a small-power source is needed, the core control module sends out an instruction to control the phase control unit to stop outputting signals, the first rectifying circuit stops running, the first rectifying module 2 in this embodiment is also provided with a current transformer at the output, the connecting mode and the function of the current transformer are the same as those of the small-power rectifying module 5, the switching tube sets are three thyristors, RC filters are arranged at two ends of all thyristors, in this embodiment, the RC filters are resistors and capacitors connected in series, interference can be effectively resisted, and the rectifying effect is better.
As a preferred solution, but not limiting, it further comprises a backup power source 8, and the main ac power source 1 and the backup power source 8 are both three-phase three-wire ac power sources of 650V.
As an unconventional device, the stability of operation is self-evident, in order to ensure that the device can avoid being affected by abnormal power failure in the operation process, a standby circuit is designed in the circuit to prevent the ship from being suddenly powered off in the demagnetizing process, thereby affecting the normal use of the ship, and in order to better eliminate magnetism on the ship, the embodiment adopts 650V three-phase power.
As a preferred solution, but not limited to, the power supply further comprises a second rectifying module 3, wherein a power input end of the second rectifying module 3 is connected with an output end of the standby power supply 8, the second rectifying module 3 comprises a fourth common cathode switch tube group and a fourth common anode switch tube group, each anode end of the fourth common cathode switch tube group is respectively connected with each cathode end of the fourth common anode switch tube group in a one-to-one correspondence manner, a common cathode end of the fourth common cathode switch tube group is a positive end of the second rectifying module 3, and a common anode end of the fourth common anode switch tube group is a negative end of the second rectifying module 3.
The second rectifying module 3 in this embodiment is a standby circuit, when the demagnetizing power source works normally, the second rectifying module 3 stops operating as standby, a six-pulse rectifying mode is adopted, the G poles of the thyristors are respectively connected to the phase control unit correspondingly, the phase control unit is controlled and processed in a unified manner, when the main circuit is abnormal, the core control module sends out an instruction to control the phase control unit to start an output signal, the standby circuit starts operating, the second rectifying module 3 starts working, a current transformer is also arranged at the output position of the second rectifying module 3 in this embodiment, the connection mode and the function of the current transformer are the same as those of the small-power rectifying module 5, details are omitted, the switch tube group is three thyristors, and RC filters are arranged at two ends of all thyristors.
In this embodiment, the power output ends of the current transformers connected to the first rectifying module 2, the second rectifying module 3 and the low-power rectifying module 5 are connected in parallel, and are further connected with a current transformer, so that the total current can be effectively sampled and detected, and the normal overall current of the circuit is ensured.
The above description of one embodiment provided in connection with a particular disclosure is not intended to limit the practice of this application to that particular disclosure. Any approximation, or substitution of techniques for the methods, structures, etc. of the present application or for the purposes of making a number of technological deductions or substitutions based on the concepts of the present application should be considered as the scope of protection of the present application.
Claims (9)
1. The utility model provides a compatible high-power demagnetization power supply, includes main alternating current power supply and first rectifier module, main alternating current power supply's output with first rectifier module's power input end is connected, its characterized in that still includes core control module, transformation element and miniwatt rectifier module, main alternating current power supply's output with transformation element's power input end is connected, transformation element's power output end with miniwatt rectifier module's power input end is connected, miniwatt rectifier module's controlled end with core control module's pulse signal end is connected.
2. The high-power demagnetizing power supply according to claim 1, wherein the low-power rectifying module comprises a first common-cathode switch tube group, a first common-anode switch tube group, a second common-cathode switch tube group and a second common-anode switch tube group, the anode ends of the first common-cathode switch tube group are respectively connected with the cathode ends of the first common-anode switch tube group in a one-to-one correspondence manner, the anode ends of the second common-cathode switch tube group are respectively connected with the cathode ends of the second common-anode switch tube group in a one-to-one correspondence manner, the common-anode ends of the first common-anode switch tube group and the common-anode ends of the second common-anode switch tube group are connected in parallel and are the negative end of the low-power rectifying module, and the common-cathode end of the first common-cathode switch tube group is the first positive end of the low-power rectifying module and the common-cathode end of the second common-cathode switch tube group is the second positive end of the low-power rectifying module.
3. The high-power demagnetizing power supply according to claim 1, characterized in that a protection module is connected between the main ac power supply and the transformer element, the protection module comprises an air switch QF1 and an ac contactor KM5, three input ends of the air switch QF1 are respectively connected with three-phase wires of the main ac power supply, three output ends of the air switch QF1 are respectively connected with three input ends of a main contact of the ac contactor KM5, a fuse F17, a fuse F18 and a fuse F19 are respectively connected between three output ends of the main contact of the ac contactor KM5 and three-phase input ends of a primary winding of the transformer element, a voltage transformer CT5 is connected between the fuse F17 and the primary winding of the transformer element, and a voltage transformer CT6 is connected between the fuse F19 and the primary winding of the transformer element.
4. The high-power demagnetizing power supply according to claim 1, further comprising a direct current power supply and a current sampling module, wherein a current transformer is connected between the low-power rectifying module and the direct current power supply, a signal output end of the current transformer is connected with a signal input end of the current sampling module, and a signal output end of the current sampling module is connected with a current sampling end of the core control module.
5. The high-power degaussing power supply according to claim 4, wherein the current sampling module comprises a resistor R2, a resistor R66, a first operational amplifier chip U2 and a second operational amplifier chip U7, a first end of the resistor R2 is a signal input end of the current sampling module, a resistor R6 is connected between a second end of the resistor R2 and a first common phase end of the first operational amplifier chip U2, a resistor R7 is connected between the first common phase end of the first operational amplifier chip U2 and the ground, a capacitor C1 is connected between a first inverting end of the first operational amplifier chip U2 and the first output end, a resistor R35 is connected between a second inverting end of the first operational amplifier chip U2 and the ground, a resistor R39 is connected between a second inverting end of the first operational amplifier chip U2 and the first common phase end of the second operational amplifier chip U2, a resistor R56 is connected between the first inverting end of the first operational amplifier chip U2 and the second operational amplifier chip U7, a resistor R66 is connected between the first inverting end of the first operational amplifier chip U7 and the first output end of the second operational amplifier chip U7, a resistor R35 is connected between the second inverting end of the first operational amplifier chip U2 and the second operational amplifier chip U7 and the first output end of the first operational amplifier chip U7, a resistor R56 is connected between the second inverting end of the first operational amplifier chip U2 and the first output end of the first operational amplifier chip, and the first operational amplifier chip is a resistor R56 is connected between the first output end of the first operational amplifier chip and the first operational amplifier chip, and the first operational amplifier chip is the first high.
6. The high power degaussing power supply of claim 1, wherein the transformer element is provided with a thermal relay for preventing overheating of the transformer.
7. The high-power demagnetizing power supply according to claim 1, wherein the first rectifying module comprises a third common-cathode switch tube group and a third common-anode switch tube group, the anode ends of the third common-cathode switch tube group are respectively connected with the cathode ends of the third common-anode switch tube group in a one-to-one correspondence manner, the common-anode end of the third common-anode switch tube group is the positive end of the first rectifying module, and the common-cathode end of the third common-cathode switch tube group is the negative end of the first rectifying module.
8. The high power degaussing power supply of claim 1, further comprising a backup power supply, wherein the primary ac power supply and the backup power supply are both three-phase three-wire 650V ac power supplies.
9. The high-power demagnetizing power supply according to claim 8, further comprising a second rectifying module, wherein the power input end of the second rectifying module is connected to the output end of the standby power supply, the second rectifying module comprises a fourth common cathode switch tube group and a fourth common anode switch tube group, the anode ends of the fourth common cathode switch tube group are respectively connected to the cathode ends of the fourth common anode switch tube group in a one-to-one correspondence manner, the common cathode end of the fourth common cathode switch tube group is the positive end of the second rectifying module, and the common anode end of the fourth common anode switch tube group is the negative end of the second rectifying module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223538707.7U CN219287389U (en) | 2022-12-29 | 2022-12-29 | Compatible high-power demagnetizing power supply |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223538707.7U CN219287389U (en) | 2022-12-29 | 2022-12-29 | Compatible high-power demagnetizing power supply |
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| CN219287389U true CN219287389U (en) | 2023-06-30 |
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| CN202223538707.7U Active CN219287389U (en) | 2022-12-29 | 2022-12-29 | Compatible high-power demagnetizing power supply |
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2022
- 2022-12-29 CN CN202223538707.7U patent/CN219287389U/en active Active
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