CN218920273U - Chip detection circuit - Google Patents
Chip detection circuit Download PDFInfo
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- CN218920273U CN218920273U CN202222871205.XU CN202222871205U CN218920273U CN 218920273 U CN218920273 U CN 218920273U CN 202222871205 U CN202222871205 U CN 202222871205U CN 218920273 U CN218920273 U CN 218920273U
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Abstract
The utility model discloses a chip detection circuit, which relates to the technical field of power electronics and comprises an input detection module, a detection module and a detection module, wherein the input detection module is used for sampling input voltage; the voltage stabilizing and adjusting module is used for providing voltage stabilization; the threshold selection module is used for providing an undervoltage threshold value and an impending undervoltage threshold value; the threshold comparison module is used for detecting the undervoltage and detecting the undervoltage; the threshold control module is used for controlling the selection of the undervoltage threshold and the undervoltage threshold to be selected through the signal self-locking circuit; a path selection module for selecting a transmission path; and the intelligent control module is used for receiving the signals and performing undervoltage prevention work and undervoltage protection work. The chip detection circuit provides voltage stabilization for the intelligent control module, performs voltage detection on input electric energy, provides an undervoltage threshold value and an undervoltage threshold value to be detected by the threshold value selection module, performs undervoltage detection and undervoltage prevention work by matching the undervoltage threshold value to be detected by the threshold value comparison module, and controls the undervoltage threshold value to be connected to the threshold value comparison module for undervoltage detection and undervoltage protection.
Description
Technical Field
The utility model relates to the technical field of power electronics, in particular to a chip detection circuit.
Background
Along with the development of power electronic technology, the electric energy of electronic devices such as mobile phones and computers is more and more complex, wherein the electronic devices are integrated through a large number of chips, a stable and efficient power supply is required, the power supply of the input electronic devices is required to be detected for ensuring normal supply of the power supply, in the existing chip detection circuit, the detection of undervoltage and the like is mostly carried out by adopting a comparison circuit, the operation of the comparison circuit can be triggered only when the power supply reaches the undervoltage, the undervoltage protection control is realized, the undervoltage judgment can not be carried out on the power supply in advance, and the undervoltage protection control can not be carried out in advance, so that the improvement is required.
Disclosure of Invention
The embodiment of the utility model provides a chip detection circuit to solve the problems in the background art.
According to an embodiment of the present utility model, there is provided a chip detection circuit including: the device comprises a power supply module, an input detection module, a voltage stabilizing and regulating module, an intelligent control module, a threshold comparison module, a threshold control module, a threshold selection module and a passage selection module;
the power module is used for carrying out voltage reduction, rectification and filtering treatment on the input alternating current;
the input detection module is used for voltage sampling of the electric energy output by the power supply module and outputting a sampling signal;
the voltage stabilizing and regulating module is used for stabilizing and outputting the electric energy output by the power supply module through the voltage stabilizing and regulating circuit;
the threshold selection module is used for providing an undervoltage threshold and an impending undervoltage threshold through the first reference power supply circuit and the second reference power supply circuit respectively;
the threshold comparison module is used for receiving the sampling signal, the undervoltage threshold and the undervoltage threshold, judging whether the received sampling signal is about to be undervoltage and has been undervoltage or not through the comparison circuit, outputting a first control signal when the sampling signal is about to be undervoltage, and outputting a second control signal when the sampling signal has been undervoltage;
the threshold control module is used for carrying out self-locking transmission on the first control signal through the signal self-locking circuit and outputting a first level signal and a second level signal, and controlling the undervoltage threshold to be connected with the threshold comparison module;
the access selection module is used for receiving the first level signal and the second level signal, performing access selection through the analog switch circuit and transmitting the first control signal and the second control signal to the intelligent control module;
the intelligent control module is used for receiving the voltage stabilization output by the voltage stabilization regulating module, receiving the first control signal and the second control signal and performing undervoltage prevention work and undervoltage protection work.
Compared with the prior art, the utility model has the beneficial effects that: the chip detection circuit provided by the utility model has the advantages that the voltage stabilizing adjustment module provides required stable electric energy for the intelligent control module, the input detection module is used for sampling input voltage so as to avoid the electric energy input into the voltage stabilizing adjustment module exceeding the required electric energy range, the threshold selection module is used for providing the undervoltage threshold and the undervoltage threshold, the threshold comparison module is used for carrying out undervoltage detection in cooperation with the undervoltage threshold, the intelligent control module is used for receiving the signal of undervoltage, the undervoltage prevention work is carried out in advance, and meanwhile, the threshold control module is used for controlling the undervoltage threshold to be connected with the threshold comparison module so as to carry out undervoltage detection by the threshold comparison module, so that the intelligent control module can directly enter the undervoltage protection work when the undervoltage occurs, and the detection precision of the undervoltage and the safety of the circuit are improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments of the present utility model will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic block diagram of a chip detection circuit according to an embodiment of the present utility model.
Fig. 2 is a circuit diagram of a chip detection circuit according to an embodiment of the present utility model.
Fig. 3 is a circuit diagram of a connection of a threshold control module according to an embodiment of the present utility model.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In embodiment 1, referring to fig. 1, a chip detection circuit includes: the device comprises a power supply module 1, an input detection module 2, a voltage stabilizing and regulating module 3, an intelligent control module 4, a threshold comparison module 5, a threshold control module 6, a threshold selection module 7 and a passage selection module 8;
specifically, the power module 1 is configured to perform voltage reduction, rectification and filtering on an input alternating current;
the input detection module 2 is used for voltage sampling of the electric energy output by the power supply module 1 and outputting a sampling signal;
the voltage stabilizing and regulating module 3 is used for stabilizing and outputting the electric energy output by the power supply module 1 through a voltage stabilizing and regulating circuit;
a threshold selection module 7, configured to provide an undervoltage threshold and an impending undervoltage threshold through the first reference power circuit and the second reference power circuit, respectively;
the threshold value comparison module 5 is used for receiving the sampling signal, the undervoltage threshold value and the undervoltage threshold value, judging whether the received sampling signal is about to be undervoltage and has been undervoltage or not through the comparison circuit, outputting a first control signal when the sampling signal is about to be undervoltage, and outputting a second control signal when the sampling signal has been undervoltage;
the threshold control module 6 is used for performing self-locking transmission on the first control signal through a signal self-locking circuit and outputting a first level signal and a second level signal, and controlling the undervoltage threshold to be accessed into the threshold comparison module 5;
the path selection module 8 is configured to receive the first level signal and the second level signal and perform path selection through an analog switch circuit, and transmit the first control signal and the second control signal to the intelligent control module 4;
and the intelligent control module 4 is used for receiving the voltage stabilization output by the voltage stabilization regulating module 3, receiving the first control signal and the second control signal and performing undervoltage prevention work and undervoltage protection work.
In a specific embodiment, the power module 1 may use the transformer W1, the rectifier T1, and the first capacitor C1 to step down, rectify, and filter the ac power output by the ac power source, which is not described herein; the input detection module 2 can adopt a resistor voltage dividing circuit to sample the voltage of the input electric energy; the voltage-stabilizing adjustment module 3 can adopt a triode voltage-stabilizing circuit to carry out wide input and voltage-stabilizing output adjustment; the intelligent control module 4 can be, but not limited to, a micro-control chip such as a singlechip, a DSP, etc.; the threshold comparison module 5 may perform threshold comparison by using a comparison circuit; the threshold control module 6 can adopt a signal self-locking circuit to perform self-locking control on the signal output by the threshold comparison module 5; the threshold selection module 7 may employ a first reference power circuit and a second reference power circuit to provide an undervoltage threshold and an impending undervoltage threshold, respectively; the path selection module 8 may use an analog switching circuit to transmit the signal output by the threshold comparison circuit.
Further, the input detection module 2 includes a first resistor R1 and a second resistor R2;
specifically, a first end of the first resistor R1 is connected to the power module 1 and the voltage stabilizing adjustment module 3, and a second end of the first resistor R1 is connected to the threshold comparison module 5 and is connected to a ground end through a second resistor R2.
In the embodiment, the first resistor R1 and the second resistor R2 form a resistor voltage divider circuit, and voltage samples the electric energy output by the power module 1.
Further, the voltage stabilizing adjustment module 3 includes a second capacitor C2, a third resistor R3, a first switching tube VT1, a third capacitor C3, a second switching tube VT2, a first voltage stabilizing tube VD1, a first potentiometer RP1, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, and a fourth capacitor C4; the intelligent control module 4 comprises a first control chip U1;
specifically, one end of the second capacitor C2, one end of the third resistor R3, and the collector of the first switch tube VT1 are connected to the first end of the first resistor R1, the base of the first switch tube VT1 is connected to the other end of the third resistor R3 and the collector of the second switch tube VT2, and is connected to the other end of the second capacitor C2, the anode of the first voltage regulator tube VD1, one end of the sixth capacitor, one end of the fourth capacitor C4, the ground end and the ground end of the first control chip U1 through the third capacitor C3, the emitter of the second switch tube VT2 is connected to the cathode of the first voltage regulator tube VD1, and is connected to the emitter of the first switch tube VT1 through the fourth resistor R4, one end of the fifth resistor R5, the other end of the fourth capacitor C4, and the power end of the first control chip U1, the other end of the fifth resistor R5 is connected to the other end of the sixth resistor R6 through the first potentiometer RP1, and the slider end of the first potentiometer RP1 is connected to the base of the second switch tube VT 2.
In the embodiment, the first switching tube VT1 may be a darlington tube, and the specific model is not limited; the second switching tube VT2 can be an NPN triode; the first potentiometer RP1 is used for adjusting the output voltage stabilization; the first control chip U1 may be, but is not limited to, an STC89C52 single-chip microcomputer.
Further, the threshold comparison module 5 includes a first comparator A1; the threshold selection module 7 comprises a third switch tube VT3, a seventh resistor R7, an eighth resistor R8, a first diode D1, an eleventh resistor R11, a first power supply VCC1, and a second voltage regulator VD2;
specifically, the inverting terminal of the first comparator A1 is connected to the second terminal of the first resistor R1, the in-phase terminal of the first comparator A1 is connected to the cathode of the first diode D1, the anode of the first diode D1 is connected to one terminal of the seventh resistor R7 and is connected to the anode of the second voltage regulator VD2 and the ground terminal through the eighth resistor R8, the other terminal of the seventh resistor R7 is connected to the emitter of the third switch tube VT3, the collector of the third switch tube VT3 is connected to the cathode of the second voltage regulator VD2 and is connected to the first power VCC1 through the eleventh resistor R11, and the base of the third switch tube VT3 is connected to the threshold control module 6.
Further, the threshold selection module 7 further includes a fourth switching tube VT4, a ninth resistor R9, a tenth resistor R10, and a second diode D2;
specifically, the base electrode of the fourth switch is connected to the threshold control module 6, the collector electrode of the fourth switch tube VT4 is connected to the cathode of the second voltage stabilizing tube VD2, the emitter electrode of the fourth switch tube VT4 is connected to the anode of the second diode D2 and one end of the tenth resistor R10 through the ninth resistor R9, the other end of the tenth resistor R10 is grounded, and the cathode of the second diode D2 is connected to the in-phase end of the first comparator A1.
In an embodiment, the first comparator A1 may be an LM393 comparator, for performing the threshold comparison; the first power supply VCC1, the eleventh resistor R11, the seventh resistor R7, the eighth resistor R8, and the second voltage regulator VD2 form a first reference power supply circuit, which is configured to provide the first comparator A1 with a threshold to be undervoltage; the first power supply VCC1, the eleventh resistor R11, the ninth resistor R9, the tenth resistor R10, and the second voltage regulator VD2 form a second reference power supply circuit, which is configured to provide an under-voltage threshold for the first comparator A1; the third switching tube VT3 and the fourth switching tube VT4 can be NPN triodes; the first diode D1 and the second diode D2 prevent backflow.
Further, the threshold control module 6 includes a twelfth resistor R12, a fourth diode D4, a thirteenth resistor R13, a fourteenth resistor R14, a fifteenth resistor R15, a second power source VCC2, a fifth switching tube VT5, a sixteenth resistor R16, a seventeenth resistor R17, a sixth switching tube VT6, an eighteenth resistor R18, a nineteenth resistor R19, a third diode D3, and an inverter U3;
specifically, the anode of the fourth diode D4 is connected to the output end of the first comparator A1 and is connected to the second power supply VCC2 through a twelfth resistor R12, the cathode of the fourth diode D4 is connected to one end of a thirteenth resistor R13 and one end of a fourteenth resistor R14 and is connected to the ground through a fifteenth resistor R15, the other end of the thirteenth resistor R13 is connected to the collector of the sixth switching tube VT6 and the anode of the third diode D3 and is connected to the ground through an eighteenth resistor R18, the other end of the fourteenth resistor R14 is connected to the base of the fifth switching tube VT5, the emitter of the fifth switching tube VT5 is grounded, the collector of the fifth switching tube VT5 is connected to one end of the sixteenth resistor R16 and is connected to the base of the sixth switching tube VT6 through a seventeenth resistor R17, the emitter of the sixth switching tube VT6 and the other end of the sixteenth resistor R16 are both connected to the power supply module 1, the cathode of the third diode D3 is connected to the input end of the inverter U3 and the base of the third switching tube VT3 and is connected to the output end of the fourth switching tube VT4 through an eighteenth resistor R18.
In the embodiment, the fifth switching tube VT5 may be an NPN-type triode, the sixth switching tube VT6 may be a PNP-type triode, and the twelfth resistor R12, the fourth diode D4, the thirteenth resistor R13, the fourteenth resistor R14, the fifteenth resistor R15, the second power source VCC2, the fifth switching tube VT5, the sixteenth resistor R16, the seventeenth resistor R17, the sixth switching tube VT6, the eighteenth resistor R18, the nineteenth resistor R19, and the third diode D3 are combined to form a signal self-locking circuit; the inverter U3 is used for signal inversion, and the specific model is not limited.
Further, the path selection module 8 includes a first analog switch U2;
specifically, the fourth end and the ninth end of the first analog switch U2 are respectively connected to the second IO end and the first IO end of the first control chip U1, the eighth end and the third end of the first analog switch U2 are both connected to the output end of the first comparator A1, and the fifth end and the sixth end of the first analog switch U2 are respectively connected to the base of the fourth switching tube VT4 and the base of the third switching tube VT 3.
In an embodiment, the first analog switch U2 may be a CD4066 chip, where the eighth end and the ninth end of the first analog switch U2 are used for transmitting a signal that is about to be output by the first comparator A1 during the undervoltage detection, and the third end and the fourth end of the first analog switch U2 are used for transmitting a signal that is about to be output by the first comparator A1 during the undervoltage detection.
The utility model relates to a chip detection circuit, which is characterized in that a transformer W1, a rectifier T1 and a first capacitor C1 are used for carrying out buck rectification and filtering treatment on an alternating current source, electric energy is provided for a voltage stabilizing and regulating module 3, the conduction degree of a first switch tube VT1 is regulated through a second switch tube VT2 in the voltage stabilizing and regulating module 3, then voltage stabilizing and regulating are realized, wherein the first potentiometer RP1 can regulate the output voltage stabilizing value and provide a required working power supply for a first control chip U1, meanwhile, a first resistor R1 and a second resistor R2 are used for sampling the voltage output by a power supply module 1 and are received by an inverting terminal of the first comparator A1, and just beginning, as the input terminal of the threshold control module U3 is at a low level, the output terminal of the inverter U3 becomes a high level to control the conduction of the third switch tube VT3, a seventh resistor R7, an eighth resistor R8, an eleventh resistor R11, a first power supply VCC1 and a second voltage stabilizing tube VD2 are used for providing a reference power supply for the first comparator A1, the first comparator A1 detects the undervoltage, when the first comparator A1 outputs high level, it indicates that the electric energy output by the power module 1 is about to reach the undervoltage, the signal about to undervoltage is transmitted to the first IO end of the first control chip U1 through the eighth end and the ninth end of the first analog switch U2, the first control chip U1 enters the undervoltage prevention work, meanwhile, the high level output by the first comparator A1 carries out self-locking on the signal self-locking circuit composed of the fifth switch tube VT5 and the sixth switch tube VT6, and controls the fourth switch tube VT4 to be conducted, the third switch tube VT3 is cut off, the first power supply VCC1, the eleventh resistor R11, the ninth resistor R9, the tenth resistor R10 and the second voltage stabilizing tube VD2 provide the undervoltage threshold for the first comparator A1, if the first comparator A1 outputs high level at this moment, it indicates the power supply undervoltage, and the undervoltage signal is transmitted to the second IO end of the first control chip U1 through the third end and the fourth end of the first analog switch U2, and the undervoltage protection work is carried out by the first control chip U1.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model 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 utility model 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.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (7)
1. A chip detection circuit, comprising: the device comprises a power supply module, an input detection module, a voltage stabilizing and regulating module, an intelligent control module, a threshold comparison module, a threshold control module, a threshold selection module and a passage selection module;
the power module is used for carrying out voltage reduction, rectification and filtering treatment on the input alternating current;
the input detection module is used for voltage sampling of the electric energy output by the power supply module and outputting a sampling signal;
the voltage stabilizing and regulating module is used for stabilizing and outputting the electric energy output by the power supply module through the voltage stabilizing and regulating circuit;
the threshold selection module is used for providing an undervoltage threshold and an impending undervoltage threshold through the first reference power supply circuit and the second reference power supply circuit respectively;
the threshold comparison module is used for receiving the sampling signal, the undervoltage threshold and the undervoltage threshold, judging whether the received sampling signal is about to be undervoltage and has been undervoltage or not through the comparison circuit, outputting a first control signal when the sampling signal is about to be undervoltage, and outputting a second control signal when the sampling signal has been undervoltage;
the threshold control module is used for carrying out self-locking transmission on the first control signal through the signal self-locking circuit and outputting a first level signal and a second level signal, and controlling the undervoltage threshold to be connected with the threshold comparison module;
the access selection module is used for receiving the first level signal and the second level signal, performing access selection through the analog switch circuit and transmitting the first control signal and the second control signal to the intelligent control module;
the intelligent control module is used for receiving the voltage stabilization output by the voltage stabilization regulating module, receiving the first control signal and the second control signal and performing undervoltage prevention work and undervoltage protection work.
2. The chip detection circuit of claim 1, wherein the input detection module comprises a first resistor and a second resistor;
the first end of the first resistor is connected with the power supply module and the voltage stabilizing and adjusting module, and the second end of the first resistor is connected with the threshold comparison module and the ground end through the second resistor.
3. The chip detection circuit according to claim 2, wherein the voltage stabilizing adjustment module comprises a second capacitor, a third resistor, a first switch tube, a third capacitor, a second switch tube, a first voltage stabilizing tube, a first potentiometer, a fourth resistor, a fifth resistor, a sixth resistor, and a fourth capacitor; the intelligent control module comprises a first control chip;
one end of the second capacitor, one end of the third resistor and the collector electrode of the first switch tube are connected with the first end of the first resistor, the base electrode of the first switch tube is connected with the other end of the third resistor and the collector electrode of the second switch tube and is connected with the other end of the second capacitor, the anode of the first voltage stabilizing tube, one end of the sixth capacitor, one end of the fourth capacitor, the grounding end and the grounding end of the first control chip through the third capacitor, the emitter electrode of the second switch tube is connected with the cathode of the first voltage stabilizing tube and is connected with the emitter electrode of the first switch tube, one end of the fifth resistor, the other end of the fourth capacitor and the power end of the first control chip through the fourth resistor, the other end of the fifth resistor is connected with the other end of the sixth resistor through the first potentiometer, and the sliding sheet end of the first potentiometer is connected with the base electrode of the second switch tube.
4. A chip detection circuit according to claim 3, wherein the threshold comparison module comprises a first comparator; the threshold selection module comprises a third switching tube, a seventh resistor, an eighth resistor, a first diode, an eleventh resistor, a first power supply and a second voltage stabilizing tube;
the inverting terminal of the first comparator is connected with the second terminal of the first resistor, the in-phase terminal of the first comparator is connected with the cathode of the first diode, the anode of the first diode is connected with one end of the seventh resistor and is connected with the anode of the second voltage stabilizing tube and the ground terminal through the eighth resistor, the other end of the seventh resistor is connected with the emitter of the third switching tube, the collector of the third switching tube is connected with the cathode of the second voltage stabilizing tube and is connected with the first power supply through the eleventh resistor, and the base of the third switching tube is connected with the threshold control module.
5. The chip detection circuit according to claim 4, wherein the threshold selection module further comprises a fourth switching tube, a ninth resistor, a tenth resistor, and a second diode;
the base electrode of the fourth switch is connected with the threshold control module, the collector electrode of the fourth switch tube is connected with the cathode of the second voltage stabilizing tube, the emitter electrode of the fourth switch tube is connected with the anode of the second diode and one end of a tenth resistor through a ninth resistor, the other end of the tenth resistor is grounded, and the cathode of the second diode is connected with the same-phase end of the first comparator.
6. The chip detection circuit according to claim 5, wherein the threshold control module comprises a twelfth resistor, a fourth diode, a thirteenth resistor, a fourteenth resistor, a fifteenth resistor, a second power supply, a fifth switching tube, a sixteenth resistor, a seventeenth resistor, a sixth switching tube, an eighteenth resistor, a nineteenth resistor, a third diode, and an inverter;
the positive pole of fourth diode is connected the output of first comparator and passes through the twelfth resistance and connects the second power, the negative pole of fourth diode is connected one end of thirteenth resistance and one end of fourteenth resistance and passes through the fifteenth resistance and connect the ground terminal, the other end of thirteenth resistance is connected the collecting electrode of sixth switching tube and the positive pole of third diode and passes through the eighteenth resistance and connect the ground terminal, the base of fifth switching tube is connected to the other end of fourteenth resistance, the projecting pole of fifth switching tube is grounded, the collecting electrode of fifth switching tube is connected one end of sixteenth resistance and passes through seventeenth resistance and is connected the base of sixth switching tube, the projecting pole of sixth switching tube and the other end of sixteenth resistance are all connected power module, the negative pole of third diode is connected the input of inverter and the base of third switching tube and passes through the eighteenth resistance and is connected the ground terminal, the output of inverting terminal is connected the base of fourth switching tube.
7. The chip detection circuit according to claim 6, wherein the path selection module comprises a first analog switch;
the fourth end and the ninth end of the first analog switch are respectively connected with the second IO end and the first IO end of the first control chip, the eighth end and the third end of the first analog switch are respectively connected with the output end of the first comparator, and the fifth end and the sixth end of the first analog switch are respectively connected with the base electrode of the fourth switching tube and the base electrode of the third switching tube.
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| CN202222871205.XU CN218920273U (en) | 2022-10-28 | 2022-10-28 | Chip detection circuit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202222871205.XU CN218920273U (en) | 2022-10-28 | 2022-10-28 | Chip detection circuit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117147950A (en) * | 2023-11-01 | 2023-12-01 | 广东科信电子有限公司 | Automatic detection circuit for chip power supply voltage |
| CN118054566A (en) * | 2024-03-19 | 2024-05-17 | 上海华建电力设备股份有限公司 | Electric power monitoring equipment |
-
2022
- 2022-10-28 CN CN202222871205.XU patent/CN218920273U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117147950A (en) * | 2023-11-01 | 2023-12-01 | 广东科信电子有限公司 | Automatic detection circuit for chip power supply voltage |
| CN117147950B (en) * | 2023-11-01 | 2024-01-09 | 广东科信电子有限公司 | Automatic detection circuit for chip power supply voltage |
| CN118054566A (en) * | 2024-03-19 | 2024-05-17 | 上海华建电力设备股份有限公司 | Electric power monitoring equipment |
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