CN218631733U - Arc extinguishing device and direct current switch - Google Patents
Arc extinguishing device and direct current switch Download PDFInfo
- Publication number
- CN218631733U CN218631733U CN202222989097.6U CN202222989097U CN218631733U CN 218631733 U CN218631733 U CN 218631733U CN 202222989097 U CN202222989097 U CN 202222989097U CN 218631733 U CN218631733 U CN 218631733U
- Authority
- CN
- China
- Prior art keywords
- switch
- circuit
- triode
- mos tube
- power supply
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The application relates to an arc control device and a direct current switch, and relates to the field of electrical control. The utility model discloses an arc control device used for protecting a switch, wherein the switch is respectively connected with a power supply anode input end and a power supply anode output end; the arc extinguishing device comprises an arc extinguishing circuit and a delay power-off circuit; the arc extinguishing circuit comprises a field effect transistor MOS tube switch; the MOS tube switch is connected with the switch in parallel, and the delay power-off circuit is respectively connected with the positive input end of the power supply, the MOS tube switch and the positive output end of the power supply; the MOS tube switch is used for being conducted after the switch is disconnected; the time-delay power-off circuit is used for controlling the MOS tube switch to be switched off after the MOS tube switch is switched on for a preset time.
Description
Technical Field
The utility model relates to an electrical control field especially relates to an arc control device and direct current switch.
Background
Currently, in the field of electrical control, an arc extinguishing device is generally used to avoid the occurrence of arc discharge phenomenon when a load is disconnected. The arc extinguishing grid is a common arc extinguishing device, and the arc extinguishing grid is composed of arc extinguishing grid pieces, and the arc extinguishing is realized by lengthening the arc and pushing the arc to the arc extinguishing grid pieces through the thickness of the arc extinguishing grid pieces and the distance between the adjacent arc extinguishing grid pieces.
However, in the arc extinguishing device in the prior art, the arc is usually required to be elongated to a certain length for arc extinguishing, and the arc extinguishing device is slow in response speed and poor in arc extinguishing effect, so that the arc extinguishing cannot be stably performed.
SUMMERY OF THE UTILITY MODEL
The utility model provides an arc control device and direct current switch to solve the unstable problem of arc extinguishing effect when the load divides absolutely among the prior art at least. The technical scheme of the utility model as follows:
according to a first aspect of the embodiments of the present invention, an arc extinguishing apparatus is provided for protecting a switch, wherein the switch is respectively connected to a positive power input terminal and a positive power output terminal; the arc extinguishing device comprises an arc extinguishing circuit and a time-delay power-off circuit; the arc extinguishing circuit comprises a metal-oxide-semiconductor field-effect transistor (MOS) switch; the MOS tube switch is connected with the switch in parallel, and the delay power-off circuit is respectively connected with the positive input end of the power supply, the MOS tube switch and the positive output end of the power supply; the MOS tube switch is used for being conducted after the switch is disconnected; the time-delay power-off circuit is used for controlling the switch of the MOS tube to be switched off after the switch of the MOS tube is switched on for a preset time.
According to the utility model discloses in the second aspect of the embodiment, provide a direct current switch, including switch, positive power input, the anodal output of power to and as above-mentioned arc control device of first aspect, positive power input and the anodal output of power are connected respectively to the switch, and arc control device is parallelly connected with the switch.
The embodiment of the utility model provides an arc control device adopts MOS pipe switch and the parallelly connected mode of switch, and when the switch cuts off, MOS pipe switch switches on; after the MOS tube switch is conducted for a preset time, the MOS tube switch is controlled to be disconnected through the control circuit, and then the gap between the switch contacts is larger than a certain distance, so that stable arc extinction is realized, and the switch is prevented from being burnt out due to arc discharge.
Drawings
In order to clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments will be briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an arc extinguishing device according to the present invention;
fig. 2 is a schematic structural diagram of an arc extinguishing device according to the present invention;
fig. 3 is a schematic structural diagram of an arc extinguishing device according to the present invention;
fig. 4 is a schematic structural diagram of an arc extinguishing apparatus provided by the present invention;
fig. 5 is a schematic structural diagram of an arc extinguishing device according to the present invention;
fig. 6 is a schematic structural diagram six of an arc extinguishing apparatus provided by the present invention;
fig. 7 is a schematic structural diagram seven of an arc extinguishing device provided by the present invention;
fig. 8 is a schematic structural diagram eight of an arc extinguishing device provided by the present invention;
fig. 9 is a schematic structural diagram nine of an arc extinguishing device provided by the present invention;
fig. 10 is a schematic structural diagram of an arc extinguishing device according to the present invention;
fig. 11 is a first schematic structural diagram of a dc switch provided in the present invention;
fig. 12 is a schematic structural diagram of a dc switch according to the present invention.
Reference numerals:
10-positive input end of power supply; 11-a switch; 12-power supply positive output end; 13-an arc extinguishing device; 14-an arc extinguishing circuit; 141-MOS tube switch; 142-a protection circuit; 15-a time-delay power-off circuit; 151-a control circuit; 152-a switch acquisition circuit; 153-voltage regulator circuit; 154-delay response circuit; 16-power supply negative input terminal; 17-direct current switch.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
The embodiment of the utility model provides an arc control device, is used for the protection switch, as shown in fig. 1, this switch (11) connects positive input end of power (10) and positive output end of power (12) respectively; the arc extinguishing device (13) comprises an arc extinguishing circuit (14) and a time-delay power-off circuit (15).
The arc extinguishing circuit (14) comprises a MOS tube switch (141); the MOS tube switch (141) is connected with the switch (11) in parallel, and the time-delay power-off circuit (15) is respectively connected with the power supply anode input end (10), the MOS tube switch (141) and the power supply anode output end (12).
The MOS tube switch (141) is used for conducting after the switch (11) is disconnected; the time-delay power-off circuit (15) is used for controlling the MOS tube switch (141) to be switched off after the MOS tube switch (141) is switched on for a preset time.
The MOS transistor switch (141) may be specifically an NMOS transistor (NMOS); the power supply positive input end (10) and the power supply positive output end (12) can be a direct current power supply positive input end and a direct current power supply positive output end.
As a possible realization mode, the power supply supplies direct current to the positive input end (10) of the power supply, when the switch (11) is changed from closed to open, the control voltage of the MOS tube switch (141) is changed, and the MOS tube switch (141) is conducted; meanwhile, the time-delay power-off circuit (15) controls the MOS tube switch (141) to be switched off after the MOS tube switch (141) is switched on for a preset time.
The control voltage of the MOS tube switch (141) is the voltage of the grid and the source of the MOS tube switch (141), and the preset time can be preset through the time delay power-off circuit (15).
According to the scheme provided by the embodiment of the application, the MOS transistor switch (141) is connected with the switch (11) in parallel, and the MOS transistor switch (141) is switched on when the switch (11) is switched off; after the MOS tube switch (141) is conducted for a preset time, the MOS tube switch (141) is controlled to be disconnected through the time delay power-off circuit (15), and then the contact gap of the switch (11) is larger than a certain distance, so that stable arc extinction is realized, and the switch (11) is prevented from being burnt due to arc discharge.
Illustratively, in the case that the preset time duration is set to be 2 milliseconds (ms), the switch (11) is turned off, and the MOS tube switch (141) is turned on; after MOS pipe switch (141) switched on for 2ms, through time delay outage circuit (15) control MOS pipe switch (141) disconnection, switch (11) contact clearance is greater than 0.3 millimeter (mm) this moment, is greater than 400 volts (V) puncture distance, realizes stabilizing the arc extinguishing, prevents to lead to switch (11) to burn out because of arc discharge.
In some embodiments, as shown in fig. 2, the delayed power-off circuit (15) provided in the embodiments of the present invention includes a control circuit (151) and a switch acquisition circuit (152).
The control circuit (151) is respectively connected with the power supply anode input end (10), the MOS tube switch (141) and the switch acquisition circuit (152), and the switch acquisition circuit (152) is connected with the power supply anode output end (12).
The switch acquisition circuit (152) is used for acquiring the output voltage of the positive output end (12) of the power supply, and controls the MOS tube switch (141) to be switched off through the control circuit (151) after a preset time when the output voltage is reduced by a preset threshold value.
It should be noted that the preset threshold may be preset according to the switch acquisition circuit (152).
As a possible implementation mode, a power supply supplies direct current to the positive input end (10) of the power supply, and when the switch (11) is changed from being closed to being opened, the switch acquisition circuit (152) acquires the output voltage of the positive output end (12) of the power supply; and under the condition that the collected output voltage is reduced by a preset threshold value, the MOS tube switch (141) is controlled to be switched off by the control circuit (151) after a preset time period.
In some embodiments, with reference to fig. 2, as shown in fig. 3, the control circuit (151) provided in embodiments of the present invention includes a transistor Q1, a transistor Q2, a transistor Q3, and a transistor Q4.
The base electrode of the triode Q1 is connected with the switch acquisition circuit (152), the collector electrode of the triode Q1 is connected with the base electrode of the triode Q2 in parallel, and the collector electrode of the triode Q1 and the base electrode of the triode Q2 are respectively connected with the collector electrode of the triode Q4.
The emitting electrode of the triode Q1 is connected with the positive output end (12) of the power supply; a resistor R6, a resistor R7 and a resistor R8 are connected in series between the emitting electrode of the triode Q1 and the positive output end (12) of the power supply.
Or, with reference to fig. 2, as shown in fig. 4, the delayed power-off circuit (15) is further connected to a negative power input terminal (16), wherein an emitter of the transistor Q1 is connected to the negative power input terminal (16); specifically, a resistor R6, a resistor R7 and a resistor R8 are connected in series between the emitter of the triode Q1 and the negative input end (16) of the power supply.
The collector of the triode Q2 is connected with the base of the triode Q3 in parallel, the collector of the triode Q2 and the base of the triode Q3 are respectively connected with the collector of the triode Q4, and the emitter of the triode Q2 is connected with the emitter of the triode Q3 in parallel and grounded.
The collector of the triode Q3 is connected with the base of the triode Q4; wherein, a resistor R9 is connected in series between the collector of the triode Q3 and the base of the triode Q4.
The collector of the triode Q4 is connected with the grid of the MOS tube switch (141), and the emitter of the triode Q4 is connected with the positive input end (10) of the power supply.
It should be noted that the transistor Q1, the transistor Q2, and the transistor Q3 are NPN transistors, and the transistor Q4 is a PNP transistor. Fig. 3 differs from fig. 4 in that the emitter of transistor Q1 in fig. 3 is connected to the positive power supply output terminal (12), and in fig. 4 the emitter of transistor Q1 is connected to the negative power supply input terminal (16).
As a possible implementation manner, in the process of delaying the switch acquisition circuit (152) for the preset time period, the base voltage potential of the transistor Q1 is gradually decreased until the emitter voltage potential of the transistor Q1 is greater than the base voltage potential of the transistor Q1, and the collector voltage potential of the transistor Q1 is greater than the base voltage potential of the transistor Q1, at which time the transistor Q1 is changed from the on state to the off state.
Because the triode Q1 is in a disconnected state, the base voltage potential of the triode Q2 rises, the emitter voltage potential of the triode Q2 is smaller than the base voltage potential of the triode Q2, the collector voltage potential of the triode Q2 is larger than the base voltage potential of the triode Q2, and at the moment, the triode Q2 is changed into a conducting state from the disconnected state.
Because the triode Q2 is in a conducting state, the base voltage potential of the triode Q3 is reduced, the emitter voltage potential of the triode Q3 is greater than the base voltage potential of the triode Q3, and the collector voltage potential of the triode Q3 is greater than the base voltage potential of the triode Q3, at the moment, the triode Q3 is changed into a disconnected state from the conducting state.
Because the triode Q3 is in a disconnected state, the base voltage potential of the triode Q4 rises, the base voltage potential of the triode Q4 is greater than the emitter voltage potential of the triode Q4, the base voltage potential of the triode Q4 is greater than the collector voltage potential of the triode Q4, and at the moment, the triode Q4 is in a disconnected state.
Furthermore, since the transistor Q4 is in an off state, the control voltage of the MOS transistor switch (141) becomes 0v, and the MOS transistor switch (141) is turned off.
As can be understood, by controlling the disconnection of the transistor Q1, the transistor Q2 can be controlled to be on; the triode Q2 is conducted, so that the triode Q3 can be controlled to be disconnected; the triode Q3 is disconnected, and the triode Q4 can be controlled to be disconnected; further, the transistor Q4 is turned off to control the MOS transistor switch (141) to be turned off.
In some embodiments, as shown in fig. 5 in combination with fig. 3, or as shown in fig. 4 in combination with fig. 6, the control circuit (151) provided by the embodiment of the present invention further includes a voltage stabilizing circuit (153).
The voltage stabilizing circuit (153) comprises a voltage stabilizing diode ZD1 and a capacitor C1. The voltage stabilizing diode ZD1 is connected with the capacitor C1 in parallel; the anode of the zener diode ZD1 is connected to the emitter of the transistor Q2 and the emitter of the transistor Q3, respectively, and the cathode of the zener diode ZD1 is connected to the collector of the transistor Q4.
The voltage stabilizing circuit is used for stabilizing the voltage of the time-delay power-off circuit.
It should be noted that fig. 5 is different from fig. 6 in that the emitter of the transistor Q1 in fig. 5 is connected to the positive power output terminal (12), and the emitter of the transistor Q1 in fig. 6 is connected to the negative power input terminal (16).
In some embodiments, as shown in fig. 7 in conjunction with fig. 5, or as shown in fig. 6 in conjunction with fig. 8, embodiments of the present invention provide a switch acquisition circuit (152) that includes a diode D1 and a delay response circuit (154).
The anode of the diode D1 is connected with the positive output end (12) of the power supply, and the delay response circuit (154) is respectively connected with the cathode of the diode D1 and the control circuit (151).
The diode D1 is used to turn off after the output voltage drops by a preset threshold.
The delay response circuit (154) is used for controlling the MOS tube switch (141) to be switched off through the control circuit (151) after the diode D1 is switched off for a preset time.
As a possible implementation mode, after the switch (11) is turned off, the output voltage of the positive output end (12) of the power supply is reduced, after the output voltage is reduced by a preset threshold value, the diode D1 is turned off, and the delay response circuit (154) delays for a preset time period.
It should be noted that fig. 7 is different from fig. 8 in that the emitter of the transistor Q1 in fig. 7 is connected to the positive power output terminal (12), and the emitter of the transistor Q1 in fig. 8 is connected to the negative power input terminal (16).
Optionally, the delay response circuit (154) includes a capacitor C2, a resistor R1, and a resistor R2.
The capacitor C2 and the resistor R1 are connected in parallel, and the capacitor C2 and the resistor R1 are respectively connected with the cathode of the diode D1; the resistor R1 and the resistor R2 are connected in parallel, and the resistor R1 and the resistor R2 are respectively connected with the control circuit (151); the capacitor C2 and the resistor R2 are connected to the ground in parallel.
As a possible implementation, in the case that the diode D1 is turned off, the capacitor C2 starts to discharge, and the resistor R1 and the resistor R2 consume electric energy until the capacitor C2 finishes discharging.
It is understood that the preset time period is related to the capacitor C2, the resistor R1 and the resistor R2. Under the condition that the resistance value of the resistor is fixed, when the capacity of the capacitor for storing electric energy is stronger, the time consumed in the discharging process is longer, and the preset time length is longer; under the condition that the capacity of storing electric energy by the capacitor is certain, when the resistance value of the resistor is larger, the consumed electric energy is more, the discharging process of the capacitor is shorter, and the preset duration is shorter.
In some embodiments, as shown in fig. 9 in conjunction with fig. 7, or as shown in fig. 10 in conjunction with fig. 8, an arc extinguishing circuit (14) provided by embodiments of the present invention further includes a protection circuit (142).
The protection circuit (142) is respectively connected with the time-delay power-off circuit (15), the source electrode of the MOS tube switch (141) and the power supply positive electrode output end (12).
The protection circuit (142) is used for protecting the MOS tube switch (141) from being damaged after the MOS tube switch (141) is disconnected.
It should be noted that fig. 9 is different from fig. 10 in that the emitter of the transistor Q1 in fig. 9 is connected to the positive power output terminal (12), and the emitter of the transistor Q1 in fig. 10 is connected to the negative power input terminal (16).
Optionally, the protection circuit (142) includes a resistor R3 and a zener diode ZD2.
The resistor R3 is connected with the voltage stabilizing diode ZD2 in parallel; the anode of the voltage stabilizing diode ZD2 is connected with the source of the MOS transistor switch (141) and the positive output end (12) of the power supply, and the cathode of the voltage stabilizing diode ZD2 is respectively connected with the grid of the MOS transistor switch (141) and the time-delay power-off circuit (15).
The embodiment of the utility model provides a dc switch is still provided, as shown in fig. 11, this dc switch (17) include anodal input of power (10), switch (11), anodal output of power (12) and arc control device (13).
Wherein, the switch (11) is respectively connected with the positive input end (10) of the power supply and the positive output end (12) of the power supply; the arc extinguishing device (13) comprises an arc extinguishing circuit (14) and a time-delay power-off circuit (15). The arc extinguishing circuit (14) comprises a MOS tube switch (141); the MOS tube switch (141) is connected with the switch (11) in parallel, and the time-delay power-off circuit (15) is respectively connected with the power supply positive input end (10), the MOS tube switch (141) and the power supply positive output end (12).
The MOS tube switch (141) is used for conducting after the switch (11) is disconnected; the time-delay power-off circuit (15) is used for controlling the MOS tube switch (141) to be switched off after the MOS tube switch (141) is switched on for a preset time, and the switching-off interval of the switch (11) in the preset time is larger than or equal to the preset interval.
Illustratively, under the condition that the preset time is set to be 2ms and the preset interval is set to be 3mm, the switch (11) is switched off, and meanwhile, the MOS tube switch (141) is switched on; after the MOS tube switch (141) is switched on for 2ms, the MOS tube switch (141) is controlled to be switched off through the time delay power-off circuit (15), the switching-off interval of the switch (11) is larger than 0.3mm at the moment and larger than the breakdown distance of 400 volts (V), stable arc extinction is realized, and the switch (11) is prevented from being burnt due to arc discharge.
It should be noted that the predetermined distance is at least 0.3mm.
It is understood that the preset time period can be set according to the preset interval. Because the contact interval of switch is greater than when certain distance, can realize stablizing the arc extinguishing, consequently, through control MOS pipe switch conduction for predetermineeing time, and then control switch's disconnection interval is more than or equal to and predetermines the interval, can realize stablizing the arc extinguishing.
In some embodiments, as shown in fig. 12 in conjunction with fig. 11, the dc switch (17) further includes a negative power input (16).
Wherein, the power negative pole input end (16) is connected with the time-delay power-off circuit (15).
In the description herein, particular features, structures, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
The above embodiments are only specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention, and all should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (11)
1. An arc-extinguishing device is characterized by being used for protecting a switch, wherein the switch is respectively connected with a positive input end and a positive output end of a power supply; the arc extinguishing device comprises an arc extinguishing circuit and a time-delay power-off circuit; the arc extinguishing circuit comprises a field effect transistor MOS tube switch;
the MOS tube switch is connected with the switch in parallel, and the time-delay power-off circuit is respectively connected with the positive input end of the power supply, the MOS tube switch and the positive output end of the power supply;
the MOS tube switch is used for being switched on after the switch is switched off;
the time-delay power-off circuit is used for controlling the MOS tube switch to be switched off after the MOS tube switch is switched on for a preset time.
2. The arc extinguishing device of claim 1, wherein the time-delay power-off circuit comprises a control circuit and a switch acquisition circuit; the control circuit is respectively connected with the power supply anode input end, the MOS tube switch and the switch acquisition circuit, and the switch acquisition circuit is connected with the power supply anode output end;
the switch acquisition circuit is used for acquiring the output voltage of the positive electrode output end of the power supply, and under the condition that the output voltage is reduced by a preset threshold value, the MOS tube switch is controlled to be switched off by the control circuit after the preset time.
3. The arc control device of claim 2, wherein the control circuit comprises a transistor Q1, a transistor Q2, a transistor Q3, a transistor Q4;
the base electrode of the triode Q1 is connected with the switch acquisition circuit, the collector electrode of the triode Q1 is connected with the base electrode of the triode Q2 in parallel, the collector electrode of the triode Q1 and the base electrode of the triode Q2 are respectively connected with the collector electrode of the triode Q4, the emitting electrode of the triode Q1 is connected with the positive output end of the power supply, or the emitting electrode of the triode Q1 is connected with the negative input end of the power supply;
the collector of the triode Q2 is connected with the base of the triode Q3 in parallel, the collector of the triode Q2 and the base of the triode Q3 are respectively connected with the collector of the triode Q4, and the emitter of the triode Q2 and the emitter of the triode Q3 are connected in parallel and grounded;
the collector of the triode Q3 is connected with the base of the triode Q4;
and the collector of the triode Q4 is connected with the grid of the MOS tube switch, and the emitter of the triode Q4 is connected with the positive input end of the power supply.
4. The arc control device of claim 3, wherein the control circuit further comprises a voltage regulator circuit; the voltage stabilizing circuit is respectively connected with an emitting electrode of the triode Q2, an emitting electrode of the triode Q3 and a collector electrode of the triode Q4;
the voltage stabilizing circuit is used for stabilizing the voltage of the time-delay power-off circuit.
5. The arc extinguishing device of claim 2, wherein the switch acquisition circuit comprises a diode D1 and a time delay response circuit;
the anode of the diode D1 is connected with the output end of the anode of the power supply, and the delay response circuit is respectively connected with the cathode of the diode D1 and the control circuit;
the diode D1 is used for being switched off after the output voltage drops by the preset threshold value;
the time delay response circuit is used for controlling the MOS tube switch to be switched off through the control circuit after the diode D1 is switched off for the preset time.
6. The arc extinguishing device of claim 1, wherein the arc quenching circuit further comprises a protection circuit; the protection circuit is respectively connected with the time-delay power-off circuit, the source electrode of the MOS tube switch and the positive output end of the power supply;
the protection circuit is used for protecting the MOS tube switch after the MOS tube switch is disconnected.
7. The arc extinguishing apparatus according to claim 6, characterized in that the protection circuit comprises a resistor R3 and a zener diode ZD2;
the resistor R3 is connected with the voltage stabilizing diode ZD2 in parallel;
the anode of the voltage stabilizing diode ZD2 is connected with the source of the MOS tube switch and the positive output end of the power supply, and the cathode of the voltage stabilizing diode ZD2 is respectively connected with the grid of the MOS tube switch and the time-delay power-off circuit.
8. The arc quenching apparatus of claim 1, wherein the arc quenching circuit further comprises a resistor R4 and a resistor R5; one end of the resistor R4 is connected with the drain electrode of the MOS tube switch, and the other end of the resistor R4 is connected with the positive input end of the power supply; one end of the resistor R5 is connected with the grid electrode of the MOS tube switch, and the other end of the resistor R5 is connected with the time-delay power-off circuit.
9. A dc switch comprising a switch, a positive power input, a positive power output, and an arc quenching device as claimed in any one of claims 1 to 8, the switch connecting the positive power input and the positive power output, respectively, the arc quenching device being connected in parallel with the switch.
10. The dc switch of claim 9, wherein the MOS transistor switch of the arc extinguishing apparatus is turned on for a preset duration, and an off interval of the switch within the preset duration is greater than or equal to a preset interval.
11. The dc switch of claim 10, wherein the predetermined pitch is at least 0.3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222989097.6U CN218631733U (en) | 2022-11-08 | 2022-11-08 | Arc extinguishing device and direct current switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222989097.6U CN218631733U (en) | 2022-11-08 | 2022-11-08 | Arc extinguishing device and direct current switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218631733U true CN218631733U (en) | 2023-03-14 |
Family
ID=85423779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222989097.6U Active CN218631733U (en) | 2022-11-08 | 2022-11-08 | Arc extinguishing device and direct current switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218631733U (en) |
-
2022
- 2022-11-08 CN CN202222989097.6U patent/CN218631733U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8742828B2 (en) | Disconnector switch for galvanic direct current interruption | |
| CN205489605U (en) | Time delay starting circuit and mobile unit | |
| CN200976577Y (en) | MOS tube driving circuit and television set having the same | |
| WO2023016574A1 (en) | Switching circuit, battery management system, battery pack, electrical device and control method | |
| CN209929959U (en) | Power supply protection circuit | |
| CN218631733U (en) | Arc extinguishing device and direct current switch | |
| CN210724728U (en) | MOS tube driving circuit capable of being quickly turned off | |
| CN109729613B (en) | Constant current drive protection circuit, protection device and television | |
| CN209913796U (en) | Switching circuit | |
| CN113782388B (en) | Relay switch buffer circuit applied to power industry products | |
| CN203596806U (en) | Electronic switch protection module in hybrid relay | |
| CN204031561U (en) | The anti-rush of current circuit of LED lamp | |
| CN210110647U (en) | Direct current relay control circuit | |
| CN217982501U (en) | Doorbell circuit | |
| CN218829188U (en) | Slow starting controller | |
| CN220710202U (en) | Driving circuit for relay | |
| CN216980453U (en) | Control device of 0 current breaking relay | |
| US20240136806A1 (en) | Automatic power off circuit of non-rebound switches | |
| CN115425618B (en) | Automatic shutdown circuit of non-resilient switch | |
| CN216564940U (en) | Converter and positive feedback circuit thereof | |
| CN219697487U (en) | Control circuit for capacitor voltage discharge | |
| CN220122786U (en) | Anti-sparking circuit and electronic equipment | |
| CN219802155U (en) | Heavy-current slow-start switching circuit for laser | |
| CN217362926U (en) | Power panel circuit of time-saving air fryer | |
| CN218071304U (en) | Impulse current suppression circuit of switching power supply |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |