CN210536532U - Freely combined rectifier bridge - Google Patents
Freely combined rectifier bridge Download PDFInfo
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- CN210536532U CN210536532U CN201921891831.7U CN201921891831U CN210536532U CN 210536532 U CN210536532 U CN 210536532U CN 201921891831 U CN201921891831 U CN 201921891831U CN 210536532 U CN210536532 U CN 210536532U
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Abstract
The utility model discloses a but rectifier bridge of independent assortment, include: the first bridge arm and/or the second bridge arm are/is packaged independently; the third bridge arm and/or the fourth bridge arm are/is independently packaged; at least two first input interfaces of the first bridge arm are respectively and correspondingly connected with at least two second input interfaces of the third bridge arm; at least two first input interfaces of the first bridge arm or at least two second input interfaces of the third bridge arm are connected with a two-phase power supply or a three-phase power supply; a first output interface of the first bridge arm and a second output interface of the third bridge arm are respectively connected with a load; and/or at least two first input interfaces of the second bridge arm are respectively and correspondingly connected with at least two second input interfaces of the fourth bridge arm; at least two first input interfaces of the second bridge arm or at least two second input interfaces of the fourth bridge arm are connected with a two-phase power supply or a three-phase power supply; and the first output interface of the second bridge arm and the second output interface of the fourth bridge arm are respectively connected with a load.
Description
Technical Field
The utility model relates to the field of electronic technology, concretely relates to but rectifier bridge of independent assortment.
Background
The rectifier bridge is formed by sealing a plurality of rectifier tubes in a shell, as shown in fig. 1, to form a complete rectifier circuit. When power is further increased or multiphase rectification is required for other reasons, a three-phase rectification circuit is proposed as shown in fig. 2. The three-phase rectifier bridge is divided into a three-phase full-wave rectifier bridge (full bridge) and a three-phase half-wave rectifier bridge (half bridge). The rectifier bridge is selected taking into account the rectifier circuit and the operating voltage. The rectifier circuit with high requirement on output voltage needs to be provided with a capacitor, and the capacitor of the rectifier circuit with low requirement on output voltage can be installed or not.
The existing rectifier bridge devices are all fixedly packaged, have single functions, and cannot be flexibly used under the condition that the requirement on output voltage is changed.
SUMMERY OF THE UTILITY MODEL
In view of this, the embodiment of the present invention provides a freely combinable rectifier bridge to solve the problem that the rectifier bridge devices in the prior art are all fixed packages, and the rectifier bridge devices have single function and cannot be flexibly used when the requirement for output voltage changes.
The embodiment of the utility model provides a but rectifier bridge of independent assortment, include:
the first bridge arm and/or the second bridge arm are/is independently packaged and comprise at least two first input interfaces and one first output interface;
the third bridge arm and/or the fourth bridge arm are/is independently packaged and comprise at least two second input interfaces and one second output interface;
at least two first input interfaces of the first bridge arm are respectively and correspondingly connected with at least two second input interfaces of the third bridge arm;
at least two first input interfaces of the first bridge arm or at least two second input interfaces of the third bridge arm are connected with a two-phase power supply or a three-phase power supply;
a first output interface of the first bridge arm and a second output interface of the third bridge arm are respectively connected with a load; and/or the presence of a gas in the gas,
at least two first input interfaces of the second bridge arm are respectively and correspondingly connected with at least two second input interfaces of the fourth bridge arm;
at least two first input interfaces of the second bridge arm or at least two second input interfaces of the fourth bridge arm are connected with a two-phase power supply or a three-phase power supply;
and the first output interface of the second bridge arm and the second output interface of the fourth bridge arm are respectively connected with a load.
Optionally, the first leg includes a first diode and a second diode, and the third leg includes a third diode and a fourth diode, wherein:
the anode of the first diode is connected with the cathode of the second diode;
the cathode of the first diode is connected with one output end of the two-phase power supply;
the anode of the second diode is connected with one end of the load;
the anode of the third diode is connected with the cathode of the fourth diode;
the cathode of the third diode is connected with the other output end of the two-phase power supply;
the anode of the fourth diode is connected with the other end of the load;
the at least two first input interfaces are respectively the cathode of the first diode and the cathode of the third diode;
the first output interface is the cathode of the second diode;
the second output interface is the anode of the third diode.
Optionally, the second leg includes a fifth diode, a sixth diode, and a seventh diode, and the fourth leg includes an eighth diode, a ninth diode, and a twelfth diode, where:
the cathode of the fifth diode, the cathode of the sixth diode and the cathode of the seventh diode are connected with each other, and the cathode of the fifth diode, the cathode of the sixth diode and the cathode of the seventh diode are connected with one end of the load;
the anode of the eighth diode, the anode of the ninth diode and the anode of the twelfth pole tube are connected with each other, and the anode of the eighth diode, the anode of the ninth diode and the anode of the twelfth pole tube are connected with the other end of the load;
the anode of the fifth diode and the cathode of the eighth diode are connected to the first output end of the three-phase power supply;
the anode of the sixth diode and the cathode of the ninth diode are connected to the second output end of the three-phase power supply;
and the anode of the seventh diode and the cathode of the twelfth diode are connected to the second output end of the three-phase power supply.
Optionally, the method further comprises: the MOS switch comprises a first MOS switch tube and a second MOS switch tube;
the source electrode of the first MOS switch tube is connected with the anode of the first diode, and the drain electrode of the first MOS switch tube is connected with the cathode of the first diode;
the source electrode of the second MOS switch tube is connected with the anode of the second diode, and the drain electrode of the second MOS switch tube is connected with the cathode of the second diode.
Optionally, the method further comprises: a first housing and a second housing, wherein,
the first bridge arm and/or the second bridge arm are/is packaged in the first shell;
the third bridge arm and/or the fourth bridge arm are/is packaged in the second shell;
the first shell is connected with the second shell through a socket.
Optionally, the first side surface of the first housing is provided with at least two first openings, and the second housing is provided with at least two second openings at positions corresponding to the at least two first openings on the first side surface;
the second side surface of the first shell is provided with at least two third openings, and the second side surface of the second shell is provided with at least two fourth openings corresponding to the at least two third openings;
wherein the second side of the first housing is adjacent to the second side of the second housing; the third opening is adjacent to the fourth opening.
Optionally, the first housing comprises at least four outlets, the second housing comprises two outlets and at least two plugs, wherein,
the first socket is a power input socket;
the second socket is a power output socket;
the third jack, the fourth jack and/or the fifth jack are connection jacks;
the third plug, the fourth plug and/or the fifth plug are connection plugs.
Optionally, a spring piece is respectively arranged at two ends inside the third jack, the fourth jack and/or the fifth jack.
The utility model has the advantages that:
1. the bridge arms of the rectifier bridge are arranged in a split mode, and the rectifier bridge can be continuously and normally used by replacing the standby bridge arms when the rectifier bridge fails.
2. The first shell can be simultaneously provided with a first bridge arm and a second bridge arm, the second shell can be simultaneously provided with a third bridge arm and a fourth bridge arm, and the switching between the two-phase rectifier bridge and the three-phase rectifier bridge can be realized by arranging corresponding input interfaces and output sockets on different side surfaces of the shell.
3. Two ends of each diode are connected with an MOS switching tube in parallel. When the bridge rectifier is used for low-voltage rectification, the loss of the bridge rectifier is easy to increase greatly. The voltage drop on the bridge circuit is 1.5V which is 25% of the input voltage of 6V, and the loss can be reduced by 50% by using the Schottky diode; the MOS switch tube is used as an active switch system, when the instantaneous value of the input alternating voltage is larger than the rectified output voltage, the MOSFET tube is switched on, and current is allowed to flow from the input end to the output end. Because full-wave rectification is required, four MOS transistors are necessary, and all the MOS transistors are connected in parallel with diodes, respectively, thereby allowing the circuit to start up and the loss to be almost reduced to 0 at the time of low-voltage rectification.
Drawings
The features and advantages of the invention will be more clearly understood by reference to the accompanying drawings, which are schematic and should not be understood as imposing any limitation on the invention, in which:
FIG. 1 is a diagram of a prior art bridge rectifier circuit;
FIG. 2 is a connection diagram of a three-phase rectification circuit in the prior art;
fig. 3 is a schematic terminal connection diagram of a freely combinable rectifier bridge according to an embodiment of the present invention;
fig. 4 is a schematic diagram of an outer shell of a freely combinable rectifier bridge according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a housing interface of a freely combinable rectifier bridge according to an embodiment of the present invention;
fig. 6 is a circuit diagram of a first bridge arm and a third bridge arm of a freely combinable rectifier bridge according to an embodiment of the present invention;
fig. 7 is a circuit diagram of a second bridge arm and a fourth bridge arm of a freely combinable rectifier bridge according to an embodiment of the present invention;
fig. 8 is a circuit diagram of a bridge arm of a freely combinable rectifier bridge according to an embodiment of the present invention;
fig. 9 is a circuit diagram of a first bridge arm of another freely combinable rectifier bridge according to an embodiment of the present invention;
fig. 10 is a schematic diagram of an interface of a housing of another freely combinable rectifier bridge according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.
The embodiment of the utility model provides a but rectifier bridge of independent combination, as shown in fig. 3 to fig. 6, including the first bridge arm and/or the second bridge arm of independent encapsulation, the third bridge arm and/or the fourth bridge arm of independent encapsulation, wherein: the first bridge arm and/or the second bridge arm which are packaged independently comprise at least two first input interfaces and one first output interface; the independently packaged third bridge arm and/or fourth bridge arm comprises at least two second input interfaces and one second output interface; at least two first input interfaces of the first bridge arm are respectively and correspondingly connected with at least two second input interfaces of the third bridge arm; at least two first input interfaces of the first bridge arm or at least two second input interfaces of the third bridge arm are connected with a two-phase power supply or a three-phase power supply; a first output interface of the first bridge arm and a second output interface of the third bridge arm are respectively connected with a load; and/or at least two first input interfaces of the second bridge arm are respectively and correspondingly connected with at least two second input interfaces of the fourth bridge arm; at least two first input interfaces of the second bridge arm or at least two second input interfaces of the fourth bridge arm are connected with a two-phase power supply or a three-phase power supply; and the first output interface of the second bridge arm and the second output interface of the fourth bridge arm are respectively connected with a load.
In this embodiment, the input and output interfaces of the two independently packaged bridge arms are both connected to the connection terminal 1 or 2, as shown in fig. 3, the two first input interfaces a1 and C1 of the first bridge arm are respectively connected to the connection terminals 11 and 13, and the two first input interfaces a2 and C2 of the third bridge arm are respectively connected to the connection terminals 21 and 23; the connection terminal 11 and the connection terminal 14 are connected through a wire, and the connection terminal 14 is connected with the first output interface 302 through a wire; the connection terminal 23 and the connection terminal 24 are connected by a wire, and the connection terminal 24 is connected to the second output interface 402 by a wire. The first output interface B1 of the first bridge arm is connected to the connection terminal 12, the second output interface of the third bridge arm is connected to the connection terminal 22, and the connection terminal 12 and the connection terminal 22 are connected to the power input interface 301 and the power input interface 401 through wires, respectively. The terminal 11 is connected to the electrode 31 via a wire, the terminal 13 is connected to the electrode 33 via a wire, and the other ends of the electrode 31 and the electrode 33 are conductive metal pieces 303 and 304, respectively. The terminals of the conductive metal sheets 303 and 304 are respectively provided with a binding post, and the binding posts are connected with the binding posts 21 and 23 through wires. The bridge arms of the rectifier bridge are arranged in a split mode, and the rectifier bridge can be continuously and normally used by replacing the standby bridge arms when the rectifier bridge fails.
In a specific embodiment, as shown in fig. 4, an insulating right-angle connector is disposed inside the package, a hole is formed in the package at a corresponding position, and the conductive metal sheets 303 and 304 are fixed in the groove of the right-angle connector. Through insulating right angle connecting piece, need not to punch to the packaging shell and carry out extra location. As shown in fig. 5, after the two package housings are plugged, power input and power output interfaces are reserved on the side surfaces.
As an alternative embodiment, the first leg comprises a first diode and a second diode, and the third leg comprises a third diode and a fourth diode, wherein: the anode of the first diode is connected with the cathode of the second diode; the cathode of the first diode is connected with one output end of the two-phase power supply; the anode of the second diode is connected with one end of the load; the anode of the third diode is connected with the cathode of the fourth diode; the cathode of the third diode is connected with the other output end of the two-phase power supply; the anode of the fourth diode is connected with the other end of the load; the at least two first input interfaces are respectively the cathode of the first diode and the cathode of the third diode; the first output interface is the cathode of the second diode; the second output interface is the anode of the third diode.
In this embodiment, as shown in fig. 7, the first arm and the third arm form a two-phase rectifier bridge, and the specific connection is as shown in fig. 3, the anode a1 of the first diode D1 is connected to the connection terminal 11, the cathode B1 of the first diode D1 is connected to the connection terminal 12, and the cathode C1 of the second diode D2 is connected to the connection terminal 13; the anode a2 of the third diode D3 is connected to the connection terminal 21, the cathode B2 of the third diode D3 is connected to the connection terminal 22, and the cathode C2 of the fourth diode D4 is connected to the connection terminal 23. The anode a1 of the first diode D1 is connected to the anode a2 of the third diode D3, and the anode a1 of the first diode D1/the anode a2 of the third diode D3 is a power output terminal; the cathode C1 of the second diode D2 is connected with the cathode C2 of the fourth diode D4, and the cathode C1 of the second diode D2/the cathode C2 of the fourth diode D4 is the other power output end; the anode B1 of the second diode D2 is one power input terminal, and the anode B2 of the fourth diode D4 is the other power input terminal.
As an alternative embodiment, the second leg includes a fifth diode, a sixth diode, and a seventh diode, and the fourth leg includes an eighth diode, a ninth diode, and a twelfth diode, where: the cathode of the fifth diode, the cathode of the sixth diode and the cathode of the seventh diode are connected with each other, and the cathode of the fifth diode, the cathode of the sixth diode and the cathode of the seventh diode are connected with one end of the load; the anode of the eighth diode, the anode of the ninth diode and the anode of the twelfth pole tube are connected with each other, and the anode of the eighth diode, the anode of the ninth diode and the anode of the twelfth pole tube are connected with the other end of the load; the anode of the fifth diode and the cathode of the eighth diode are connected to the first output end of the three-phase power supply; the anode of the sixth diode and the cathode of the ninth diode are connected to the second output end of the three-phase power supply; and the anode of the seventh diode and the cathode of the twelfth diode are connected to the second output end of the three-phase power supply.
In this embodiment, as shown in fig. 8, the anodes of the three diodes of the second bridge arm are connected, the cathodes of the three diodes of the fourth bridge arm are connected, respectively, to form a three-phase rectifier bridge, specifically, the cathode A3 of the fifth diode D5 is connected to the anode a4 of the eighth diode D8, the cathode B3 of the sixth diode D6 is connected to the anode B4 of the ninth diode D9, the cathode C3 of the seventh diode D7 is connected to the anode C4 of the twelfth diode D10, wherein the cathode A3 of the fifth diode D5 is further connected to the first output of the three-phase power supply, the cathode B3 of the sixth diode D6 is further connected to the third output of the three-phase power supply, and the cathode C3 of the seventh diode D7 is further connected to the third output of the three-phase power supply; a lead is led out from the joint of the anodes of the three diodes of the second bridge arm and is connected with one end of the load, and a lead is also led out from the joint of the cathodes of the three diodes of the fourth bridge arm and is connected with the other end of the load.
In a specific embodiment, referring to fig. 3, the cathode A3 of the fifth diode D5 is connected to the anode a4 of the eighth diode D8 through the connection terminal 11, the electrode 31 and the connection terminal 21, the cathode B3 of the sixth diode D6 is connected to the anode B4 of the ninth diode D9 through the connection terminal 12, the electrode 32 and the connection terminal 22, and the cathode C3 of the seventh diode D7 is connected to the anode C4 of the twelfth diode D10 through the connection terminal 13, the electrode 33 and the connection terminal 23; the anode E3 of the fifth diode D5 is connected to the first output interface 302 via a connection terminal 15, and the cathode E4 of the eighth diode D8 is connected to the second output interface 402 via a connection terminal 25.
As an optional implementation, further comprising: the MOS switch comprises a first MOS switch tube and a second MOS switch tube; the source electrode of the first MOS switch tube is connected with the anode of the first diode, and the drain electrode of the first MOS switch tube is connected with the cathode of the first diode; the source electrode of the second MOS switch tube is connected with the anode of the second diode, and the drain electrode of the second MOS switch tube is connected with the cathode of the second diode.
In this embodiment, as shown in fig. 8 and 9, a MOS switch tube is connected in parallel to both ends of each diode. When the bridge rectifier is used for low-voltage rectification, the loss of the bridge rectifier is easy to increase greatly. The voltage drop on the bridge circuit is 1.5V which is 25% of the input voltage of 6V, and the loss can be reduced by 50% by using the Schottky diode; the MOS switch tube is used as an active switch system, when the instantaneous value of the input alternating voltage is larger than the rectified output voltage, the MOSFET tube is switched on, and current is allowed to flow from the input end to the output end. Because full-wave rectification is required, four MOS transistors are necessary, and all the MOS transistors are connected in parallel with diodes, respectively, thereby allowing the circuit to start up and the loss to be almost reduced to 0 at the time of low-voltage rectification.
As an optional implementation, further comprising: the bridge comprises a first shell and a second shell, wherein the first bridge arm and/or the second bridge arm are/is packaged in the first shell; the third bridge arm and/or the fourth bridge arm are/is packaged in the second shell; the first shell is connected with the second shell through a socket.
In this embodiment, as shown in fig. 3 to 5, the first housing and the second housing are fixedly connected through the socket. The first shell can be simultaneously provided with a first bridge arm and a second bridge arm, the second shell can be simultaneously provided with a third bridge arm and a fourth bridge arm, and the switching between the two-phase rectifier bridge and the three-phase rectifier bridge can be realized by arranging corresponding input interfaces and output sockets on different side surfaces of the shell.
As an alternative embodiment, the first side surface of the first shell is provided with at least two first openings, and the second shell is provided with at least two second openings at positions corresponding to the at least two first openings on the first side surface;
the second side surface of the first shell is provided with at least two third openings, and the second side surface of the second shell is provided with at least two fourth openings corresponding to the at least two third openings;
wherein the second side of the first housing is adjacent to the second side of the second housing; the third opening is adjacent to the fourth opening.
In this embodiment, as shown in fig. 10, an insulating right-angle connector is not used, and positioning and punching are performed in addition, so that the two pairs of input interfaces and output interfaces conform to the standard of a two-hole socket, and can be directly connected with a direct-current electrical appliance for use.
As an alternative embodiment, the first housing comprises at least four sockets, and the second housing comprises two sockets and at least two plugs, wherein the first socket is a power input socket; the second socket is a power output socket; the third jack, the fourth jack and/or the fifth jack are connection jacks; the third plug, the fourth plug and/or the fifth plug are connection plugs.
As an optional implementation mode, spring pieces are respectively arranged at two ends inside the third jack, the fourth jack and/or the fifth jack.
In the present embodiment, as shown in fig. 3, the conductive metal pieces 303, 304 are in contact with the spring pieces 41, 43, respectively; the spring pieces 41, 43 are fixed in the insulating cases 42, 43, respectively. The tail ends of the insulating shells 42 and 43 are provided with through holes, and the spring pieces 41 and 43 are respectively connected with the wiring terminals 21 and 23 through wires.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations fall within the scope defined by the appended claims.
Claims (8)
1. A freely combinable rectifier bridge, comprising:
the first bridge arm and/or the second bridge arm are/is independently packaged and comprise at least two first input interfaces and one first output interface;
the third bridge arm and/or the fourth bridge arm are/is independently packaged and comprise at least two second input interfaces and one second output interface;
at least two first input interfaces of the first bridge arm are respectively and correspondingly connected with at least two second input interfaces of the third bridge arm;
at least two first input interfaces of the first bridge arm or at least two second input interfaces of the third bridge arm are connected with a two-phase power supply or a three-phase power supply;
the first output interface of the first bridge arm and the second output interface of the third bridge arm are respectively connected with a load; and/or the presence of a gas in the gas,
at least two first input interfaces of the second bridge arm are respectively and correspondingly connected with at least two second input interfaces of the fourth bridge arm;
at least two first input interfaces of the second bridge arm or at least two second input interfaces of the fourth bridge arm are connected with a two-phase power supply or a three-phase power supply;
and the first output interface of the second bridge arm and the second output interface of the fourth bridge arm are respectively connected with the load.
2. The freely combinable rectifier bridge of claim 1, wherein said first leg comprises a first diode and a second diode, and said third leg comprises a third diode and a fourth diode, wherein:
the anode of the first diode is connected with the cathode of the second diode;
the cathode of the first diode is connected with one output end of the two-phase power supply;
the anode of the second diode is connected with one end of the load;
the anode of the third diode is connected with the cathode of the fourth diode;
the cathode of the third diode is connected with the other output end of the two-phase power supply;
the anode of the fourth diode is connected with the other end of the load;
the at least two first input interfaces are respectively a cathode of the first diode and a cathode of the third diode;
the first output interface is the cathode of the second diode;
the second output interface is the anode of the third diode.
3. The freely combinable rectifier bridge of claim 1, wherein said second leg comprises a fifth diode, a sixth diode, and a seventh diode, and said fourth leg comprises an eighth diode, a ninth diode, and a twelfth diode, wherein:
a cathode of the fifth diode, a cathode of the sixth diode, and a cathode of the seventh diode are connected to each other, and the cathode of the fifth diode, the cathode of the sixth diode, and the cathode of the seventh diode are connected to one end of the load;
the anode of the eighth diode, the anode of the ninth diode and the anode of the twelfth diode are connected with each other, and the anode of the eighth diode, the anode of the ninth diode and the anode of the twelfth diode are connected with the other end of the load;
the anode of the fifth diode and the cathode of the eighth diode are connected to the first output end of the three-phase power supply;
the anode of the sixth diode and the cathode of the ninth diode are connected to the second output end of the three-phase power supply;
and the anode of the seventh diode and the cathode of the twelfth diode are connected to a second output end of the three-phase power supply.
4. The freely combinable rectifier bridge of claim 2, further comprising: the MOS switch comprises a first MOS switch tube and a second MOS switch tube;
the source electrode of the first MOS switch tube is connected with the anode of the first diode, and the drain electrode of the first MOS switch tube is connected with the cathode of the first diode;
and the source electrode of the second MOS switch tube is connected with the anode of the second diode, and the drain electrode of the second MOS switch tube is connected with the cathode of the second diode.
5. The freely combinable rectifier bridge of claim 1, further comprising: a first housing and a second housing, wherein,
the first bridge arm and/or the second bridge arm are/is packaged in the first shell;
the third leg and/or the fourth leg are encapsulated within the second housing;
the first housing and the second housing are connected through a socket.
6. The freely combinable rectifier bridge of claim 5, wherein the first side of the first outer shell is provided with at least two first openings, and the second outer shell is provided with at least two second openings at positions of the first side corresponding to the at least two first openings;
the second side surface of the first shell is provided with at least two third openings, and the second side surface of the second shell is provided with at least two fourth openings corresponding to the at least two third openings;
wherein the second side of the first housing is adjacent to the second side of the second housing; the third opening is adjacent to the fourth opening.
7. The freely combinable rectifier bridge of claim 5, wherein said first housing comprises at least four sockets and said second housing comprises two sockets and at least two plugs, wherein,
the first socket is a power input socket;
the second socket is a power output socket;
the third jack, the fourth jack and/or the fifth jack are connection jacks;
the third plug, the fourth plug and/or the fifth plug are connection plugs.
8. The freely combinable rectifier bridge of claim 7, wherein spring strips are respectively arranged at two ends inside the third socket, the fourth socket and/or the fifth socket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921891831.7U CN210536532U (en) | 2019-11-05 | 2019-11-05 | Freely combined rectifier bridge |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921891831.7U CN210536532U (en) | 2019-11-05 | 2019-11-05 | Freely combined rectifier bridge |
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| CN210536532U true CN210536532U (en) | 2020-05-15 |
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| CN201921891831.7U Active CN210536532U (en) | 2019-11-05 | 2019-11-05 | Freely combined rectifier bridge |
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