CN201556975U - Standby automatic power-off device with intelligence, safety and energy conservation - Google Patents
Standby automatic power-off device with intelligence, safety and energy conservation Download PDFInfo
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- CN201556975U CN201556975U CN2009201765768U CN200920176576U CN201556975U CN 201556975 U CN201556975 U CN 201556975U CN 2009201765768 U CN2009201765768 U CN 2009201765768U CN 200920176576 U CN200920176576 U CN 200920176576U CN 201556975 U CN201556975 U CN 201556975U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02B90/20—Smart grids as enabling technology in buildings sector
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission
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Abstract
The utility model relates to a standby automatic power-off device with intelligence, safety and energy conservation, comprising a controlled power supply jack (1), a first low-voltage direct current power supply (2), a second low-voltage direct current power supply (3) and a control unit (4), wherein the control unit (4) includes an infrared remote control receiving pipe (Q1), a normally-open starting button (B1), a load current mutual inductance detecting coil (L1), a logic or gate (U1), a switch triode (Q1) and an electromagnetic relay (K). The standby automatic power-off device is provided with two sets of low-voltage direct current power supplies, thus reducing the cost, the complexity and standby energy consumption of the the device, and the standby power of the device is below 10milliwatt; and the standby automatic power-off device is also provided with an infrared remote control pipe-receiving machine and a lightning protection discharger, thus enhancing the function and the use convenience. Therefore, the device has low cost, easy promotion, and extra-low standby energy consumption with less than 1KWh of ten years, thus being more environment-friendly and energy-saving.
Description
Technical field
The utility model belongs to the power-saving technique field.
Background technology
Similarly the stand-by energy-saving device can not cut off the master control jack and can only cut off controlled jack when electric appliance standby at present, the circuit of battery saving arrangement itself is when controlled jack is cut off in standby and operate as normal energy consumption as broad as long (more than 1 watt) when opening controlled jack on the other hand, therefore the energy consumption sum of electric appliance standby energy consumption on the master control jack (about in the of 10 watts) and the circuit of battery saving arrangement own also has a large amount of waste of energy when electric appliance standby, and the energy consumption of the circuit of battery saving arrangement in long-term stand-by time own makes the electronic device heating, circuit is aging, the lost of life easily causes fault (be as application number 200820091444.0 " a kind of energy-saving electric power socket of Bye-byes ").
Summary of the invention
Problem to be solved in the utility model is exactly to overcome the shortcoming that above-mentioned prior art exists, a kind of standby auto-power-off device of intelligent safety energy conservation energy is provided, be provided with independently two cover low-voltage dc power supplies, first low-voltage dc power supply is used for logical process, open the power supply that controlled jack drives relay when second low-voltage dc power supply is used for operate as normal, the second low-voltage dc power supply energy consumption is zero when standby.Also be provided with the lightning protection discharge tube, improve the safety of power consumption equipment, also be provided with manual actuation of button, infrared remote control starting drive, use more convenient.This battery saving arrangement standby power itself is within 10 milliwatts, and the energy consumption in 10 years is below 1 degree.
The utility model is achieved in that
A kind of standby auto-power-off device of intelligent safety energy conservation energy includes charged power jack 1, the first low-voltage dc power supply 2, the second low-voltage dc power supplies 3, control unit 4; Control unit 4 contains infrared remote control receiving tube Q1, normal moving button B1, load current mutual inductance magnetic test coil L1, logic sum gate U1, switch triode Q1, the electromagnetic relay K of opening; Infrared remote control receiving tube Q1, a normal end of opening moving button B1 link to each other with the positive pole of first low-voltage dc power supply 2 simultaneously, and the other end links to each other with first, second input of logic sum gate U1 respectively; Load current mutual inductance magnetic test coil L1 one end links to each other with the ground of first low-voltage dc power supply 2, be connected to the 3rd input of logic sum gate U1 after the positive pole of the other end and the 5th rectifier diode D3 is in series again, a power line of charged power jack 1 passes load current mutual inductance magnetic test coil L1; The output of logic sum gate U1 links to each other with the base stage of switch triode Q1 by base resistance R4, inserts second low-voltage dc power supply 3 after the control coil two ends of the collector electrode of switch triode Q1, emitter and electromagnetic relay K are in series; The emitter of switch triode (Q1) connects the negative pole of second low-voltage dc power supply 3, the positive pole of a termination second low-voltage dc power supply 3 of the control coil of electromagnetic relay K; The load contact (K-1) of often opening of electromagnetic relay (K) is series between 220 volts of civil powers and the controlled jack.
Described battery saving arrangement is between mains supply input live wire and zero line and be connected with lightning protection discharger (Q3); Lightning protection discharger (Q3) can be the gas discharge anti-thunder tube, can be piezo-resistance discharge anti-thunder tube, can be Transient Suppression Diode, or be connected between power firestreak and the zero line after their the combination parallel connection.
The infrared remote control receiving tube (Q1) of described battery saving arrangement can be an infrared receiving diode, also can be infrared reception triode, also can be infrared integrated reception head.
Described battery saving arrangement, its first low-voltage dc power supply (2) is the halfwave rectifier power supply of capacitance decompression, contains first decompression capacitor (C1), first rectifier diode (D1), second rectifier diode (D2), first filter capacitor (C2), voltage stabilizing didoe (Z); One end of first decompression capacitor (C1) links to each other with mains supply input live wire, and the other end links to each other with the negative pole of first rectifier diode (D1), the positive pole of second rectifier diode (D2) simultaneously; The negative pole of the positive pole of the positive pole of first rectifier diode (D1), voltage stabilizing didoe (Z), first filter capacitor (C2) links to each other as the power cathode of first low-voltage dc power supply (2) with 220 volts of mains supply input zero lines; The positive pole of the negative pole of the negative pole of second rectifier diode (D2), voltage stabilizing didoe (Z), first filter capacitor (C2) links to each other as the positive source (V1+) of first low-voltage dc power supply (2) with mains supply input live wire.
Described battery saving arrangement, its second low-voltage dc power supply (3) is the halfwave rectifier power supply of capacitance decompression, contains second decompression capacitor (C21), the 3rd rectifier diode (D21), the 4th rectifier diode (D22), second filter capacitor (C22); One end of second decompression capacitor (C21) links to each other with mains supply input live wire, and the other end links to each other with the negative pole of the 3rd rectifier diode (D21), the positive pole of the 4th rectifier diode (D22) simultaneously; The negative pole of the positive pole of the 3rd rectifier diode (D21), second filter capacitor (C22) links to each other as the power cathode of second low-voltage dc power supply (3) with mains supply input zero line; The positive pole of the negative pole of the 4th rectifier diode (D21), second filter capacitor (C22) links to each other as the positive source (V2+) of second low-voltage dc power supply (3) with mains supply input live wire.
Described battery saving arrangement, its control unit (4) contain the delay circuit of being made up of time delay resistance parallel with one another (R5) and delay capacitor (C5) start-up time; The positive pole of delay capacitor (C5), negative pole link to each other with the output of logic sum gate (U1), the negative pole of first low-voltage dc power supply (2) respectively.
Described battery saving arrangement, first, second, third input of its logic sum gate (U1) is connected with first pull down resistor (R1), second pull down resistor (R2), the 3rd pull down resistor (R3) respectively, and the other end of first pull down resistor (R1), second pull down resistor (R2), the 3rd pull down resistor (R3) links to each other with the negative pole of first low-voltage dc power supply (2) simultaneously.
When needs are opened charged power jack 1, press the moving button B1 of normal unlatching or use the Infrared remote controller of any household electrical appliances to press any button facing to infrared remote control receiving tube Q1, at this moment first of logic sum gate U1 or second input obtains high level signal, logic sum gate U1 is output as high level, switch triode Q1 is open-minded, the control coil of electromagnetic relay K obtains the driving of second low-voltage dc power supply 3, electromagnetic relay K often leaves load contact K-1 closure, and charged power jack 1 is connected with mains supply; The output high level of logic sum gate U1 also is delay capacitor C5 charging simultaneously, and switch triode Q1 opening state will continue for some time, and charged power jack 1 will continue for some time with the mains supply on-state.As pressing start button or pressing in the duration of Infrared remote controller connection, the electrical appliance that is connected with charged power jack 1 is opened operate as normal, the alternating current impression electromotive force of load current mutual inductance magnetic test coil L1 makes the 3rd input of logic sum gate U1 will continue to obtain high level signal by the 5th rectifier diode D3, the output of logic sum gate U1 is continuously high level, charged power jack 1 will continue open-minded, and electrical appliance enters normal operating conditions; As after pressing start button or pressing the duration of Infrared remote controller connection, the electrical appliance that is connected with charged power jack 1 is not still opened work, three inputs of all of logic sum gate U1 all are low level, logic sum gate U1 is output as low level, delay time later switch triode Q1 will end, and charged power jack 1 will be by deenergization once more; When changing holding state over to after should the electrical appliance operate as normal, the induced electromotive force of the magnetic test coil of load current mutual inductance at this moment (L1) is very faint, the 3rd of logic sum gate U1 fails and is low level, and delay time switch triode Q1 later will end, and charged power jack (1) will be disconnected power supply.
Description of drawings
Accompanying drawing is circuit theory diagrams of the present utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail.
Referring to accompanying drawing, the utility model includes charged power jack 1, the first low-voltage dc power supply 2, the second low-voltage dc power supplies 3, control unit 4; Control unit 4 contains infrared remote control receiving tube Q1, normal moving button B1, load current mutual inductance magnetic test coil L1, logic sum gate U1, switch triode Q1, the electromagnetic relay K of opening; Infrared remote control receiving tube Q1, a normal end of opening moving button B1 link to each other with the positive pole of first low-voltage dc power supply 2 simultaneously, and the other end links to each other with first, second input of logic sum gate U1 respectively; Load current mutual inductance magnetic test coil L1 one end links to each other with the ground of first low-voltage dc power supply 2, be connected to the 3rd input of logic sum gate U1 after the positive pole of the other end and the 5th rectifier diode D3 is in series again, a power line of charged power jack 1 passes load current mutual inductance magnetic test coil L1; The output of logic sum gate U1 links to each other with the base stage of switch triode Q1 by base resistance R4, inserts second low-voltage dc power supply 3 after the control coil two ends of the collector electrode of switch triode Q1, emitter and electromagnetic relay K are in series; The emitter of switch triode (Q1) connects the negative pole of second low-voltage dc power supply 3, the positive pole of a termination second low-voltage dc power supply 3 of the control coil of electromagnetic relay K; The load contact (K-1) of often opening of electromagnetic relay (K) is series between 220 volts of civil powers and the controlled jack.
When needs are opened charged power jack 1, press the moving button B1 of normal unlatching or use the Infrared remote controller of any household electrical appliances to press any button facing to infrared remote control receiving tube Q1, at this moment first of logic sum gate U1 or second input obtains high level signal, logic sum gate U1 is output as high level, switch triode Q1 is open-minded, the control coil of electromagnetic relay K obtains the driving of second low-voltage dc power supply 3, electromagnetic relay K often leaves load contact K-1 closure, and charged power jack 1 is connected with mains supply; The output high level of logic sum gate U1 also is delay capacitor C5 charging simultaneously, and switch triode Q1 opening state will continue for some time, and charged power jack 1 will continue for some time with the mains supply on-state.As pressing start button or pressing in the duration of Infrared remote controller connection, the electrical appliance that is connected with charged power jack 1 is opened operate as normal, the alternating current impression electromotive force of load current mutual inductance magnetic test coil L1 makes the 3rd input of logic sum gate U1 will continue to obtain high level signal by the 5th rectifier diode D3, the output of logic sum gate U1 is continuously high level, charged power jack 1 will continue open-minded, and electrical appliance enters normal operating conditions; As after pressing start button or pressing the duration of Infrared remote controller connection, the electrical appliance that is connected with charged power jack 1 is not still opened work, three inputs of all of logic sum gate U1 all are low level, logic sum gate U1 is output as low level, delay time later switch triode Q1 will end, and charged power jack 1 will be by deenergization once more; When changing holding state over to after should the electrical appliance operate as normal, the induced electromotive force of the magnetic test coil of load current mutual inductance at this moment (L1) is very faint, the 3rd of logic sum gate U1 fails and is low level, and delay time switch triode Q1 later will end, and charged power jack (1) will be disconnected power supply.
Owing to voltage-stabiliser tube need be set, level and smooth by the filtering of the second filter capacitor C22, second low-voltage dc power supply 3 just can make the control coil of electromagnetic relay K obtain the electric current of operate as normal; Switch triode Q1 ends when standby, and the power consumption of the control coil of electromagnetic relay K also is zero, also is zero in the internal power consumption of second low-voltage dc power supply 3 that does not have voltage-stabiliser tube.Therefore the total power consumption of second low-voltage dc power supply 3 is zero during standby, and the stand-by power consumption of whole battery saving arrangement is the power consumption of first low-voltage dc power supply 2.First low-voltage dc power supply 2 is the halfwave rectifier DC power supply of a capacitance decompression, when the capacitance of choosing the first decompression capacitor C1 is 0.0680 microfarad, when the voltage stabilizing value of voltage stabilizing didoe Z is 4.7 volts, be no more than 2 milliamperes by calculating first low-voltage dc power supply, 2 total output currents, power consumption is no more than 10 milliwatts.
Base resistance is selected the common fixed carbon resister of 1000 Ω for use, and switch triode is selected 2N9014 for use, the HK3FF type electromagnetic relay that relay selects for use Zhejiang Song Le company to produce.
Description of drawings
Compare with same device before, be provided with independently two cover low-voltage dc power supplies, reduced the standby energy consumption of cost, complexity and device itself, the standby energy consumption of device itself can reach below 10 milliwatts. Increase on the other hand infrared remote control Device for storing pipes, lightning protection discharger, strengthened function and ease of use. Therefore this installation cost cheap, be easy to promote, standby energy consumption extremely low 10 years less than 1 degree electricity, more environmental protection and energy saving.
Claims (7)
1. the standby auto-power-off device of an intelligent safety energy conservation energy includes charged power jack (1), first low-voltage dc power supply (2), second low-voltage dc power supply (3), control unit (4); Control unit (4) contains infrared remote control receiving tube (Q1), normal moving button (B1), load current mutual inductance magnetic test coil (L1), logic sum gate (U1), switch triode (Q1), the electromagnetic relay (K) opened; Infrared remote control receiving tube (Q1), a normal end of opening moving button (B1) link to each other with the positive pole of first low-voltage dc power supply (2) simultaneously, and the other end links to each other with first, second input of logic sum gate (U1) respectively; Load current mutual inductance magnetic test coil (L1) end links to each other with the ground of DC power supply, be connected to the 3rd input of logic sum gate (U1) after the positive pole of the other end and the 5th rectifier diode (D3) is in series again, a power line of charged power jack (1) passes load current mutual inductance magnetic test coil (L1); The output of logic sum gate (U1) links to each other with the base stage of switch triode (Q1) by base resistance (R4), and the two ends of the control coil of collector electrode, emitter and the electromagnetic relay (K) of switch triode (Q1) are in series in back access second low-voltage dc power supply (3); The emitter of switch triode (Q1) connects the negative pole of second low-voltage dc power supply (3), the positive pole of one termination, second low-voltage dc power supply (3) of the control coil of electromagnetic relay (K), the load contact (K-1) of often opening of electromagnetic relay (K) is series between 220 volts of civil powers and the controlled jack.
2. according to the described battery saving arrangement of claim 1, it is characterized in that: between mains supply input live wire and zero line and be connected with lightning protection discharger (Q3); Lightning protection discharger (Q3) can be the gas discharge anti-thunder tube, can be piezo-resistance discharge anti-thunder tube, can be Transient Suppression Diode, or be connected between power firestreak and the zero line after their the combination parallel connection.
3. according to the described battery saving arrangement of claim 1, it is characterized in that: infrared remote control receiving tube (Q1) can be an infrared receiving diode, also can be infrared reception triode, also can be infrared integrated reception head.
4. according to the described battery saving arrangement of claim 1, it is characterized in that: first low-voltage dc power supply (2) is the halfwave rectifier power supply of capacitance decompression, contains first decompression capacitor (C1), first rectifier diode (D1), second rectifier diode (D2), first filter capacitor (C2), voltage stabilizing didoe (Z); One end of first decompression capacitor (C1) links to each other with mains supply input live wire, and the other end links to each other with the negative pole of first rectifier diode (D1), the positive pole of second rectifier diode (D2) simultaneously; The negative pole of the positive pole of the positive pole of first rectifier diode (D1), voltage stabilizing didoe (Z), first filter capacitor (C2) links to each other as the power cathode of first low-voltage dc power supply (2) with 220 volts of mains supply input zero lines; The positive pole of the negative pole of the negative pole of second rectifier diode (D2), voltage stabilizing didoe (Z), first filter capacitor (C2) links to each other as the positive source (V1+) of first low-voltage dc power supply (2) with mains supply input live wire.
5. according to the described battery saving arrangement of claim 1, it is characterized in that: second low-voltage dc power supply (3) is the halfwave rectifier power supply of capacitance decompression, contains second decompression capacitor (C21), the 3rd rectifier diode (D21), the 4th rectifier diode (D22), second filter capacitor (C22); One end of second decompression capacitor (C21) links to each other with mains supply input live wire, and the other end links to each other with the negative pole of the 3rd rectifier diode (D21), the positive pole of the 4th rectifier diode (D22) simultaneously; The negative pole of the positive pole of the 3rd rectifier diode (D21), second filter capacitor (C22) links to each other as the power cathode of second low-voltage dc power supply (3) with mains supply input zero line; The positive pole of the negative pole of the 4th rectifier diode (D21), second filter capacitor (C22) links to each other as the positive source (V2+) of second low-voltage dc power supply (3) with mains supply input live wire.
6. according to the described battery saving arrangement of claim 1, it is characterized in that: control unit (4) contains the delay circuit of being made up of time delay resistance parallel with one another (R5) and delay capacitor (C5) start-up time; The positive pole of delay capacitor (C5), negative pole link to each other with the output of logic sum gate (U1), the negative pole of first low-voltage dc power supply (2) respectively.
7. according to the described battery saving arrangement of claim 1, it is characterized in that: first, second, third input of logic sum gate (U1) is connected with first pull down resistor (R1), second pull down resistor (R2), the 3rd pull down resistor (R3) respectively, and the other end of first pull down resistor (R1), second pull down resistor (R2), the 3rd pull down resistor (R3) links to each other with the negative pole of first low-voltage dc power supply (2) simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201765768U CN201556975U (en) | 2009-09-04 | 2009-09-04 | Standby automatic power-off device with intelligence, safety and energy conservation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201765768U CN201556975U (en) | 2009-09-04 | 2009-09-04 | Standby automatic power-off device with intelligence, safety and energy conservation |
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| Publication Number | Publication Date |
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| CN201556975U true CN201556975U (en) | 2010-08-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201765768U Expired - Fee Related CN201556975U (en) | 2009-09-04 | 2009-09-04 | Standby automatic power-off device with intelligence, safety and energy conservation |
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| CN (1) | CN201556975U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103279044A (en) * | 2013-05-11 | 2013-09-04 | 兰如根 | Standby power-saving controller |
| CN103580515A (en) * | 2013-11-15 | 2014-02-12 | 深圳市航盛电子股份有限公司 | Circuit for reducing power source static power consumption |
| CN105119501A (en) * | 2015-08-26 | 2015-12-02 | 长沙奥托自动化技术有限公司 | Pre-charging circuit for low-voltage frequency converter and pre-charging method |
| CN108828983A (en) * | 2018-06-04 | 2018-11-16 | 中国人民解放军战略支援部队信息工程大学 | Electrical appliance automatic power system and automatic power method |
| CN109361205A (en) * | 2018-12-10 | 2019-02-19 | 深圳和而泰智能控制股份有限公司 | A kind of power-down protection circuit and electric tool |
-
2009
- 2009-09-04 CN CN2009201765768U patent/CN201556975U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103279044A (en) * | 2013-05-11 | 2013-09-04 | 兰如根 | Standby power-saving controller |
| CN103279044B (en) * | 2013-05-11 | 2017-06-09 | 兰如根 | Stand-by energy-saving controller |
| CN103580515A (en) * | 2013-11-15 | 2014-02-12 | 深圳市航盛电子股份有限公司 | Circuit for reducing power source static power consumption |
| CN105119501A (en) * | 2015-08-26 | 2015-12-02 | 长沙奥托自动化技术有限公司 | Pre-charging circuit for low-voltage frequency converter and pre-charging method |
| CN108828983A (en) * | 2018-06-04 | 2018-11-16 | 中国人民解放军战略支援部队信息工程大学 | Electrical appliance automatic power system and automatic power method |
| CN109361205A (en) * | 2018-12-10 | 2019-02-19 | 深圳和而泰智能控制股份有限公司 | A kind of power-down protection circuit and electric tool |
| CN109361205B (en) * | 2018-12-10 | 2023-09-26 | 深圳和而泰智能控制股份有限公司 | Power-down protection circuit and electric tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100818 Termination date: 20140904 |
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| EXPY | Termination of patent right or utility model |