CN116799632A - GIS cable T connects section of thick bamboo circuit - Google Patents
GIS cable T connects section of thick bamboo circuit Download PDFInfo
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- CN116799632A CN116799632A CN202311088036.5A CN202311088036A CN116799632A CN 116799632 A CN116799632 A CN 116799632A CN 202311088036 A CN202311088036 A CN 202311088036A CN 116799632 A CN116799632 A CN 116799632A
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- resistor
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- switch
- triode
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- 235000017166 Bambusa arundinacea Nutrition 0.000 title claims description 3
- 235000017491 Bambusa tulda Nutrition 0.000 title claims description 3
- 241001330002 Bambuseae Species 0.000 title claims description 3
- 235000015334 Phyllostachys viridis Nutrition 0.000 title claims description 3
- 239000011425 bamboo Substances 0.000 title claims description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 8
- 229910052710 silicon Inorganic materials 0.000 description 8
- 239000010703 silicon Substances 0.000 description 8
- 238000001514 detection method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
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Abstract
The invention discloses a GIS cable T-connection barrel circuit, which relates to the technical field of power equipment and comprises a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, a first triode, a second triode, a first operational amplifier, a first switch, a first connecting end, a second connecting end, a third connecting end, a fourth connecting end, a first relay and a second relay. The invention can automatically detect and control the isolating switches.
Description
Technical Field
The invention relates to the technical field of power equipment, in particular to a GIS cable T-connection tube circuit.
Background
Publication No.: CN112054382a discloses a GIS cable T-junction barrel circuit, which keeps the grounding point of the T-junction barrel in a locking state through an electromagnetic locking module, so that the residual electric energy in the closed electric power loop is discharged along with a grounding end, thereby ensuring that a worker unlocks a grounding wire under the condition of no current, and avoiding the occurrence of safety accidents. However, the signals of the locking module are manually controlled by a worker according to the instruction, and automatic detection and signal linkage between the isolating switches cannot be performed.
Disclosure of Invention
The invention aims to solve the technical problems, and provides a GIS cable T-connection barrel circuit which comprises a control unit, wherein the control unit comprises a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, a first triode, a second triode, a first operational amplifier, a first switch, a first connecting end, a second connecting end, a third connecting end, a fourth connecting end, a first relay and a second relay, one end of the first switch is connected with a power supply, the other end of the first switch is connected with one end of the first resistor, the other end of the first resistor is connected with one end of the first relay, one end of a normally-closed contact of the first relay is connected with the power supply, the other end of the normally-closed contact of the first relay is connected with the first connecting end, the inverting end of the first operational amplifier is connected with a first triode base electrode, the first triode collector is connected with the power supply, one end of the first triode emitter is connected with one end of the fourth resistor, the other end of the fourth resistor is connected with the second triode emitter, one end of the fifth resistor is connected with one end of the fifth resistor, the other end of the first relay is connected with the other end of the first relay, the other end of the normally-closed contact of the first relay is connected with the first relay, the other end of the normally-closed contact of the first relay is connected with the first relay, and the other end of the first relay is connected with the other end of the normally-open.
Further, the control unit further comprises an eighth resistor, a ninth resistor, a tenth resistor, an eleventh resistor, a twelfth resistor, a third MOS tube, a fourth triode, a fifth triode, a second operational amplifier, a third operational amplifier and a second switch, one end of the eighth resistor is connected with one end of the second switch, the other end of the second switch is connected with a power supply, the other end of the eighth resistor is connected with a source electrode of the third MOS tube, a grid electrode of the third MOS tube is connected with an output end of the second operational amplifier, one end of the ninth resistor is connected with one end of the tenth resistor and an in-phase end of the third operational amplifier, the in-phase end of the second operational amplifier is connected with one end of the eleventh resistor, the other end of the second relay is connected with one end of the twelfth resistor, the other end of the twelfth resistor is connected with a base electrode of the fourth triode, a collector electrode of the fourth triode is connected with the base electrode of the second triode, an emitter of the fourth triode is connected with an emitter of the fifth triode, the collector electrode of the fifth triode is connected with the power supply, the other end of the tenth resistor is connected with the other end of the eleventh resistor, and the grounding end of the tenth resistor is connected with the other end of the eleventh resistor.
Further, the control unit further comprises a thirteenth resistor, a fourteenth resistor, a sixth MOS tube, a third switch, a fifth connecting end and a first silicon controlled rectifier, one end of the thirteenth resistor is connected with the source electrode of the third MOS tube, the grid electrode of the sixth MOS tube is connected with one end of the ninth resistor, the drain electrode of the sixth MOS tube is connected with the inverting end of the second operational amplifier, the source electrode of the sixth MOS tube is connected with the control electrode of the first silicon controlled rectifier, the anode of the first silicon controlled rectifier is connected with the common end of the third switch, the cathode of the first silicon controlled rectifier is connected with one end of the fourteenth resistor, the first connecting end of the third switch is connected with a power supply, the second connecting end of the third switch, the other end of the fourteenth resistor, the other end of the thirteenth resistor is connected with a grounding end.
Further, the control unit further comprises a fifteenth resistor and a sixteenth resistor, one end of the fifteenth resistor is connected with the power supply, the other end of the fifteenth resistor is connected with the inverting end of the second operational amplifier, one end of the sixteenth resistor is connected with the ground end, and the other end of the sixteenth resistor is connected with the ground end.
Further, the control unit further comprises a seventeenth resistor and an eighteenth resistor, one end of the seventeenth resistor is connected with the power supply, the other end of the seventeenth resistor is connected with the inverting end of the third operational amplifier and one end of the eighteenth resistor, and the other end of the eighteenth resistor is connected with the grounding end.
Further, the control unit further comprises a nineteenth resistor, one end of the nineteenth resistor is connected with the inverting end of the first operational amplifier, and the other end of the nineteenth resistor is connected with the grounding end.
Further, the control unit further comprises a twentieth resistor, one end of the twentieth resistor is connected with the base electrode of the first triode, and the other end of the twentieth resistor is connected with the ground terminal.
Further, the control unit further comprises a twenty-first resistor, one end of the twenty-first resistor is connected with the emitter of the fifth triode, and the other end of the twenty-first resistor is connected with the ground terminal.
Compared with the prior art, the invention has the beneficial effects that:
the invention can carry out linkage control on the isolating switches and inhibit linkage among the isolating switches when current faults exist in the circuit.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following description will briefly explain the drawings needed in the prior art and the embodiments, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of an overall structure provided by the present invention.
Fig. 2 is a schematic diagram of connection of circuit connection ends of a GIS cable T-connector.
Fig. 3 is a schematic circuit diagram of a GIS cable T-connector.
Detailed Description
In order that the objects and advantages of the invention will become more readily apparent, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings, it being understood that the following text is only intended to describe one or more specific embodiments of the invention and is not intended to limit the scope of the invention as defined in the appended claims.
Referring to the drawings, the invention relates to a GIS cable T connection tube circuit which is characterized by comprising a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, a first triode Q1, a second triode Q2, a first operational amplifier U1, a first switch S1, a first connection end P1, a second connection end P2, a third connection end P3, a fourth connection end P4, a first relay K1 and a second relay K2, wherein one end of the first switch S1 is connected with a power supply, the other end of the first switch S1 is connected with one end of the first resistor R1, the other end of the first resistor R1 is connected with one end of a coil of the first relay K1, one end of a normally-closed contact point of the first relay K1 is connected with the power supply, the other end of the normally-closed contact point of the first relay K1 is connected with the first connection end P1, the inverting end of the first operational amplifier U1 is connected with the inverting end of the first operational amplifier U1, the output end of the first operational amplifier U1 is connected with the second connection end P2, the third connection end P3 of the third relay, the other end of the second relay Q1 is connected with the other end of the triode Q2, the other end of the first relay Q1 is connected with the other end of the third resistor Q2, the other end of the third resistor R1 is connected with the other end of the third resistor R2, the fourth resistor R1 is connected with the other end of the fourth resistor R2, the other end of the normally-off point is connected with the other end of the third resistor Q1, the third resistor Q2 is connected with the other end of the third resistor, the normally-off contact is connected with the other end of the third resistor Q2.
Specifically, the circuit further comprises an eighth resistor R8, a ninth resistor R9, a tenth resistor R10, an eleventh resistor R11, a twelfth resistor R12, a third MOS transistor Q3, a fourth triode Q4, a fifth triode Q5, a second operational amplifier U2, a third operational amplifier U3 and a second switch S2, one end of the eighth resistor R8 is connected with one end of the second switch S2, the other end of the second switch S2 is connected with a power supply, the other end of the eighth resistor R8 is connected with a source electrode of the third MOS transistor Q3, a grid electrode of the third MOS transistor Q3 is connected with an output end of the second operational amplifier U2, one end of the ninth resistor R9 is connected with one end of the tenth resistor R10, an in-phase end of the third operational amplifier U3 is connected with an in-phase end of the eleventh resistor R11, the other end of the second relay K2 is connected with one end of the twelfth resistor R12, the other end of the twelfth resistor R12 is connected with the fourth triode Q4, the other end of the fourth resistor Q4 is connected with the base electrode of the fourth triode Q4, the fourth triode Q4 is connected with the other end of the fifth triode Q4, the base electrode of the fifth triode Q11 is connected with the base electrode of the fourth triode Q4, and the other end of the fifth triode Q11 is connected with the base electrode of the fifth triode Q11 is connected.
Specifically, the circuit further comprises a thirteenth resistor R13, a fourteenth resistor R14, a sixth MOS tube Q6, a third switch S3, a fifth connecting end P5 and a first controllable silicon D1, wherein one end of the thirteenth resistor R13 is connected with the source electrode of the third MOS tube Q3, the grid electrode of the sixth MOS tube Q6 is connected with one end of the ninth resistor R9, the drain electrode of the sixth MOS tube Q6 is connected with the inverting end of the second operational amplifier U2, the source electrode of the sixth MOS tube Q6 is connected with the control electrode of the first controllable silicon D1, the anode of the first controllable silicon D1 is connected with the common end of the third switch S3, the cathode of the first controllable silicon D1 is connected with one end of the fourteenth resistor R14, the first connecting end of the third switch S3 is connected with a power supply, the second connecting end of the fourteenth resistor R14, and the other end of the thirteenth resistor R13 is connected with a grounding end.
Specifically, the circuit further comprises a fifteenth resistor R15 and a sixteenth resistor R16, one end of the fifteenth resistor R15 is connected with a power supply, the other end of the fifteenth resistor R15 is connected with the inverting end of the second operational amplifier U2, one end of the sixteenth resistor R16 is connected, and the other end of the sixteenth resistor R16 is connected with a grounding end.
Specifically, the circuit further comprises a seventeenth resistor R17 and an eighteenth resistor R18, one end of the seventeenth resistor R17 is connected with a power supply, the other end of the seventeenth resistor R17 is connected with the inverting end of the third operational amplifier U3, one end of the eighteenth resistor R18 is connected, and the other end of the eighteenth resistor R18 is connected with a grounding end.
Specifically, the circuit further comprises a nineteenth resistor R19, one end of the nineteenth resistor R19 is connected with the inverting terminal of the first operational amplifier U1, and the other end of the nineteenth resistor R19 is connected with the grounding terminal.
Specifically, the circuit further comprises a twentieth resistor R20, one end of the twentieth resistor R20 is connected with the base electrode of the first triode Q1, and the other end of the twentieth resistor R20 is connected with the ground terminal.
Specifically, the circuit further comprises a twenty-first resistor R21, one end of the twenty-first resistor R21 is connected with the emitter of the fifth triode Q5, and the other end of the twenty-first resistor R21 is connected with the ground terminal.
In this embodiment, each control unit is connected to two isolating switches for solving the problem of coordinated control between the isolating switches, wherein the first connection end P1 of the control unit is a control signal output end of the isolating switch a, the second connection end P2 is a control signal output end of the isolating switch B, the third connection end P3 is an outgoing line detection signal input end, the fourth connection end P4 is a manual disconnection signal input end of the isolating switch B, the signal given to the first connection end P1 is fed back to the first operational amplifier U1 at the same time, the first switch S1 is used for control signal input, the first resistor R1 is used for limiting current of the first relay K1, when the first switch S1 is closed, the normally closed contact of the first relay K1 is opened, the first connection end P1 feeds back a low potential signal to the isolating switch, the second resistor R2 and the third resistor R3 are used for inputting bias to the same phase end of the first operational amplifier U1, the first operational amplifier U1 outputs a signal to the first triode Q1 while feeding back the signal to the isolating switch at the first connecting end P1, the first triode Q1 is conducted, one path of a power supply signal of the collector of the first triode Q1 is fed back to the second connecting end P2 and the coil of the second relay K2 through the emitter of the first triode Q1, the fourth resistor R4, the emitter of the second triode Q2, the base of the second triode Q2, the sixth resistor R6 and the grounding end loop, the other path is fed back to the second connecting end P2 and the coil of the second relay K2 through the collector of the second triode Q2 and the seventh resistor R7, the signal fed back to the coil of the second relay K2 is a control signal input to the control unit through the current detection signal at the outlet side, a detection port is provided for judging whether current exists in a circuit after the isolating switch A is closed, when the isolating switch B is manually opened, the signal is input to the second triode Q2 through the fourth connecting end P4, the base electrode of the second triode Q2 is biased, the second connecting end P2 has no signal output, and the normally open contact of the second relay K2 is disconnected.
In this embodiment, the problem to be solved is that after the isolating switch a is opened, if there is still a current fault in the line on the outgoing line side, the signal of the isolating switch B is automatically suppressed, wherein the other end of the normally open contact of the second relay K2 is connected with the non-inverting terminal of the eleventh resistor R11 and the second operational amplifier U2, when the current signal detected by the third connecting terminal P3 is converted into a voltage by the eleventh resistor R11 and then is input to the non-inverting terminal of the second operational amplifier U2, the non-inverting terminal of the second operational amplifier U2 is provided with a reference potential by the reference power supply, the second switch S2 replaces the fourth connecting terminal P4 to input a manual control signal of the isolating switch B, when no current is output by the second operational amplifier U2, the third MOS transistor Q3 is turned on, when the second switch S2 is turned on, the power signal is fed back to the non-inverting terminal of the third operational amplifier U3 by the eighth resistor R8, the third MOS transistor Q3, the fifth transistor Q5 is turned on, the power signal of the fifth transistor Q5 is input to the non-inverting terminal of the third operational amplifier Q4, and then the current signal is input to the third transistor Q2 is turned off by the third transistor Q2 when no current is input to the third connecting terminal P4, and no current is input to the third transistor Q2.
In this embodiment, after the disconnecting switch a is disconnected, if the current existing on the wire outlet side is fed back to the ground loop through the disconnecting switch B, then if the disconnecting switch B is manually disconnected, the circuit may still have the current problem, which is solved by connecting the gate of the sixth MOS transistor Q6 with the gate of the third MOS transistor Q3 in parallel, connecting the drain of the sixth MOS transistor Q6 with the power supply, when the third connecting terminal P3 has an overcurrent fault, feeding the output signal of the second operational amplifier U2 back to the third MOS transistor Q3 and also feeding the output signal back to the sixth MOS transistor Q6, switching on the sixth MOS transistor Q6, feeding the power signal of the drain terminal of the sixth MOS transistor Q6 back to the fifth connecting terminal P5 through the sixth MOS transistor Q6, the control electrode of the first thyristor D1 and the cathode of the first thyristor D1, switching on the first thyristor D1, the fourteenth resistor R14 is used for pulling up the signal at the fifth connection end P5, the third switch S3 is used for resetting the fifth connection end P5, at this time, after the signal input of the second switch S2, the normally open contact of the second relay K2 is opened, the non-phase end of the second operational amplifier U2 is not input with the signal, the power signal at the end of the third switch S3 is fed back to the fifth connection end P5 through the first thyristor D1, the first input end of the third switch S3 is switched to the second input end during resetting, the first thyristor D1 is turned off, the non-signal output at the fifth connection end P5 is performed, that is, after the isolating switch B is manually controlled, if the overcurrent occurs at the outlet side after the isolating switch a is opened, and the current exists in a loop due to the closing of the isolating switch B, and when the third connection end P3 is in a weak detection state, the condition of current exists is automatically recorded. The fifteenth resistor R15 and the sixteenth resistor R16 replace the connection between the drain electrode of the sixth MOS transistor Q6 and the power supply, and the reference setting of the inverting terminal of the second operational amplifier U2, at this time, the eleventh resistor R11 needs to be set to high resistance, the seventeenth resistor R17 and the eighteenth resistor R18 are used for the reference setting of the inverting terminal of the third operational amplifier U3, the nineteenth resistor R19 is used for signal pull-down when the first connection terminal P1 is not output, the twentieth resistor R20 is used for the offset voltage loop of the first operational amplifier U1, and the twenty first resistor R21 is used for signal pull-up when the output signal of the fifth transistor Q5 is output.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (8)
1. The utility model provides a GIS cable T connects a section of thick bamboo circuit, a serial communication port, including first resistance R1, second resistance R2, third resistance R3, fourth resistance R4, fifth resistance R5, sixth resistance R6, seventh resistance R7, first triode Q1, second triode Q2, first operational amplifier U1, first switch S1, first link P1, second link P2, third link P3, fourth link P4, first relay K1, second relay K2, first switch S1 one end and power connection, the other end of first switch S1 and first resistance R1 one end are connected, the other end of first resistance R1 and first relay K1 coil one end are connected, first relay K1 normally closed contact one end and power connection, the other end of first relay K1 normally closed contact and first link P1, first operational amplifier U1 inverting terminal are connected, first triode Q1 output and first triode Q1 are connected, first triode Q1 and second triode Q2, the other end of first relay Q1 and second relay Q2, the other end is connected to the fourth resistance R2, the other end is connected to the third relay R1 coil one end, the other end is connected to the third resistance R2, the other end is connected to the third resistance R1, the other end is connected to the third relay Q2, the third relay K1 normally closed contact one end is connected to the power connection.
2. The GIS cable T-connection circuit according to claim 1, further comprising an eighth resistor R8, a ninth resistor R9, a tenth resistor R10, an eleventh resistor R11, a twelfth resistor R12, a third MOS transistor Q3, a fourth transistor Q4, a fifth transistor Q5, a second operational amplifier U2, a third operational amplifier U3, and a second switch S2, wherein one end of the eighth resistor R8 is connected to one end of the second switch S2, the other end of the second switch S2 is connected to a power supply, the other end of the eighth resistor R8 is connected to a source of the third MOS transistor Q3, a gate of the third MOS transistor Q3 is connected to an output end of the second operational amplifier U2, one end of the ninth resistor R9, a drain of the third MOS transistor Q3 is connected to one end of the tenth resistor R10, an in-phase end of the third operational amplifier U3, an in-phase end of the second operational amplifier U2 is connected to one end of the eleventh resistor R11, the other end of the second relay K2 is connected to another end of the normally open contact, the other end of the ninth resistor R9 is connected to one end of the twelfth resistor R12, the other end of the fourth resistor R4 is connected to another end of the base of the fourth transistor Q4, the base of the fourth transistor Q4 is connected to another end of the base of the fourth resistor Q4, and another end of the third transistor Q4 is connected to another end of the base of the fourth resistor Q4.
3. The GIS cable T-connection tube circuit according to claim 2, further comprising a thirteenth resistor R13, a fourteenth resistor R14, a sixth MOS transistor Q6, a third switch S3, a fifth connection terminal P5, and a first thyristor D1, wherein one end of the thirteenth resistor R13 is connected to the source of the third MOS transistor Q3, the gate of the sixth MOS transistor Q6 is connected to one end of the ninth resistor R9, the drain of the sixth MOS transistor Q6 is connected to the inverting terminal of the second operational amplifier U2, the source of the sixth MOS transistor Q6 is connected to the gate of the first thyristor D1, the anode of the first thyristor D1 is connected to the common terminal of the third switch S3, the cathode of the first thyristor D1 is connected to one end of the fourteenth resistor R14, the first connection terminal of the third switch S3 is connected to the power supply, and the second connection terminal of the third switch S3, the other end of the fourteenth resistor R14, and the other end of the thirteenth resistor R13 are connected to the ground terminal.
4. The GIS cable T-connection tube circuit according to claim 2, further comprising a fifteenth resistor R15 and a sixteenth resistor R16, wherein one end of the fifteenth resistor R15 is connected to a power supply, the other end of the fifteenth resistor R15 is connected to an inverting end of the second operational amplifier U2 and one end of the sixteenth resistor R16, and the other end of the sixteenth resistor R16 is connected to a ground terminal.
5. The GIS cable T-connection tube circuit according to claim 2, further comprising a seventeenth resistor R17 and an eighteenth resistor R18, wherein one end of the seventeenth resistor R17 is connected to a power supply, the other end of the seventeenth resistor R17 is connected to an inverting end of the third operational amplifier U3 and one end of the eighteenth resistor R18, and the other end of the eighteenth resistor R18 is connected to a ground terminal.
6. The GIS cable T-barrel circuit of claim 1, further comprising a nineteenth resistor R19, wherein one end of the nineteenth resistor R19 is connected to the inverting terminal of the first operational amplifier U1, and the other end of the nineteenth resistor R19 is connected to the ground terminal.
7. The GIS cable T-junction tank circuit of claim 1, further comprising a twentieth resistor R20, wherein one end of the twentieth resistor R20 is connected to the base of the first triode Q1, and the other end of the twentieth resistor R20 is connected to the ground.
8. The GIS cable T-junction tank circuit according to claim 2, further comprising a twenty-first resistor R21, wherein one end of the twenty-first resistor R21 is connected to the emitter of the fifth triode Q5, and the other end of the twenty-first resistor R21 is connected to the ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311088036.5A CN116799632B (en) | 2023-08-28 | 2023-08-28 | GIS cable T connects section of thick bamboo circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311088036.5A CN116799632B (en) | 2023-08-28 | 2023-08-28 | GIS cable T connects section of thick bamboo circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116799632A true CN116799632A (en) | 2023-09-22 |
| CN116799632B CN116799632B (en) | 2023-10-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311088036.5A Active CN116799632B (en) | 2023-08-28 | 2023-08-28 | GIS cable T connects section of thick bamboo circuit |
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| CN (1) | CN116799632B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19990007507U (en) * | 1997-07-31 | 1999-02-25 | 이종수 | Electronic overcurrent relay |
| CN102520349A (en) * | 2011-12-29 | 2012-06-27 | 苏州大学 | Automatic test system for performance of multi-position switch and test method for same |
| CN204291506U (en) * | 2014-12-19 | 2015-04-22 | 郭婉玉 | A kind of illuminating lamp energy-saving control device |
| WO2018099357A1 (en) * | 2016-11-30 | 2018-06-07 | 比亚迪股份有限公司 | Overcharge protection circuit and overdischarge protection circuit for power battery |
| CN116526847A (en) * | 2023-06-28 | 2023-08-01 | 广州谐同电子科技有限公司 | Switching power supply circuit with protection adjustment function |
-
2023
- 2023-08-28 CN CN202311088036.5A patent/CN116799632B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19990007507U (en) * | 1997-07-31 | 1999-02-25 | 이종수 | Electronic overcurrent relay |
| CN102520349A (en) * | 2011-12-29 | 2012-06-27 | 苏州大学 | Automatic test system for performance of multi-position switch and test method for same |
| CN204291506U (en) * | 2014-12-19 | 2015-04-22 | 郭婉玉 | A kind of illuminating lamp energy-saving control device |
| WO2018099357A1 (en) * | 2016-11-30 | 2018-06-07 | 比亚迪股份有限公司 | Overcharge protection circuit and overdischarge protection circuit for power battery |
| CN116526847A (en) * | 2023-06-28 | 2023-08-01 | 广州谐同电子科技有限公司 | Switching power supply circuit with protection adjustment function |
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| Publication number | Publication date |
|---|---|
| CN116799632B (en) | 2023-10-24 |
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