CN205385465U - Utilize single live wire of electromagnetic relay to get circuit and single live wire switch - Google Patents
Utilize single live wire of electromagnetic relay to get circuit and single live wire switch Download PDFInfo
- Publication number
- CN205385465U CN205385465U CN201620056709.8U CN201620056709U CN205385465U CN 205385465 U CN205385465 U CN 205385465U CN 201620056709 U CN201620056709 U CN 201620056709U CN 205385465 U CN205385465 U CN 205385465U
- Authority
- CN
- China
- Prior art keywords
- circuit
- electromagnetic relay
- connects
- resistance
- live wire
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The utility model relates to a circuit is got to single live wire with electromagnetic relay, include: electromagnetic relay control circuit, get circuit, comparison circuit, switch circuit, wherein, the live wire is connected to electromagnetic relay control circuit one end, and the other end is connected respectively and is got circuit and switch circuit, gets electric circuit connection comparison circuit, and switch circuit connects comparison circuit, and switch circuit connects the zero line. The utility model relates to a single live wire switch. Through implementing the utility model discloses, the control strategy of relay is adopted, powerful electrical apparatus can be controlled, adopt the electromagnetic relay of low price to not the magnetic latching relay who adopts the high price, solved the high problem of magnetic latching relay price, be favorable to reduceing the material cost of complete machine, adopt the electromagnetic relay control circuit of low -power consumption, after the relay closure, the electric current of the normal during operation of electric current much lower than that consumes, like this the reduction get electric requirement.
Description
Technical field
This utility model relates to intelligent switch field, more particularly, it relates to a kind of single live wire power getting circuit utilizing electromagnetic relay and single live wire switch.
Background technology
Single live wire switch is the switch on wall of a kind of electronic type, is the regeneration product of traditional mechanical button type wall switch, can realize function more intelligent, more convenient operation, and user can touch control illumination.Being all adopt single live wire wiring rule due to most of electrician's wirings, so this switch is made as leading with single fire control, also have this switch itself to need to consume certain electric energy, therefore, this will relate to the field of single live wire power getting.Single live wire power getting includes two aspects: static state power taking when turning off the light, ON state power taking when turning on light.The circuit of list live wire ON state power taking when this patent relates only to turn on light, say, that the power taking after relay Guan Bi.
Single live wire switchs main point two classes on the market, and one is adopt SCR control electric light, another kind of employing Control electric light.During with SCR control electric light, owing to the electric current of electric light can flow through controllable silicon, controllable silicon is so caused to generate heat.Lamp power is more high, and controllable silicon heating is more big, and temperature rise is also more high, so controllable silicon can only control the electric light within 100W, it can not control powerful electric light, such as Crystal lamp, ceiling lamp.If with relay, being just easily done more than 1000W, easily solve silicon controlled problem.But, owing to the two ends pressure reduction when power taking of single fire soft-touch control is by switching off carrys out power taking, it is difficult to take out electricity when the switch is closed and comes, and the operating current of relay is also very big.
The magnetic latching relay that current existing soft-touch control adopts, when the contact of magnetic latching relay needs open or close state, have only to use DC pulse voltage excitation coil, relay just completed out and the State Transferring closed in moment, coil needs not continue to energising afterwards, only just can maintain the state of relay by the magnetic force of permanent magnet constant, thus can realize the purpose of key lamp.But, the shortcoming of this technical scheme is that magnetic latching relay price is high, adds the cost of soft-touch control, constrains the development of soft-touch control.
Utility model content
The technical problems to be solved in the utility model is in that, for the drawbacks described above of prior art, it is provided that a kind of single live wire power getting circuit utilizing electromagnetic relay and single live wire switch.
This utility model solves its technical problem and be the technical scheme is that a kind of single live wire power getting circuit utilizing electromagnetic relay of structure, including: electromagnetic relay control circuit, power-supply circuit, comparison circuit, on-off circuit, wherein,
Described electromagnetic relay control circuit one end connects live wire, and the other end connects described power-supply circuit and described on-off circuit respectively, and described power-supply circuit connects described comparison circuit, and described on-off circuit connects described comparison circuit, and described on-off circuit connects zero line.
In the single live wire power getting circuit utilizing electromagnetic relay described in the utility model, described power-supply circuit includes: diode D1, diode D2, Zener diode D3, electric capacity C1, wherein,
The positive pole of described diode D1 connects described electromagnetic relay control circuit, the negative pole of described diode D1 connects one end of the positive pole of described diode D2, the negative pole of described Zener diode D3 and described electric capacity C1 respectively, the negative pole of described diode D2 and the positive pole of described Zener diode D3 connect described comparison circuit, the other end ground connection of described electric capacity C1；
The positive pole of described diode D1 arranges sample of signal point, obtains signal A, and the negative pole of described diode D2 arranges power taking point VCC.
In the single live wire power getting circuit utilizing electromagnetic relay described in the utility model, described comparison circuit includes: voltage comparator U1, resistance R2, resistance R3, resistance R4, resistance R5, audion Q2, wherein,
The in-phase input end of described voltage comparator U1 connects the positive pole of described Zener diode D3, and the in-phase input end of described voltage comparator U1 passes through described resistance R2 ground connection, and the in-phase input end at described voltage comparator U1 arranges sample of signal point, obtains signal B；
The inverting input of described voltage comparator U1 connects the other end of described resistance R3 and described resistance R4, described resistance R3 respectively and connects supply voltage VCC2, and the inverting input at described voltage comparator U1 arranges sample of signal point, obtains signal C；
The other end of described resistance R4 connects the colelctor electrode of described audion Q2, the grounded emitter of described audion Q2, the base stage of described audion Q2 connects the outfan of described voltage comparator U1 by described resistance R5, the power supply positive pole of described voltage comparator U1 connects the negative pole of described diode D2, the power supply minus earth of described voltage comparator U1.
In the single live wire power getting circuit utilizing electromagnetic relay described in the utility model, described on-off circuit includes: field effect transistor Q1, resistance R1, wherein,
The drain electrode of described field effect transistor Q1 connects the positive pole of described diode D1, and the grid of described field effect transistor Q1 connects the outfan of described voltage comparator U1, the source electrode connecting to neutral line of described field effect transistor Q1, the source ground of described field effect transistor Q1 by described resistance R1.
In the single live wire power getting circuit utilizing electromagnetic relay described in the utility model, described electromagnetic relay control circuit includes: electromagnetic relay, audion Q3, audion Q4, resistance R6, resistance R7, resistance R8, diode D4, wherein,
The base stage of described audion Q3 connects signal A by described resistance R6, the grounded emitter of described audion Q3, the colelctor electrode of described audion Q3 connects the positive pole of described diode D4 and the pin 3 of described electromagnetic relay respectively, and the negative pole of described diode D4 connects the pin 4 of described electromagnetic relay；
The base stage of described audion Q4 connects signal B, the grounded emitter of described audion Q4 by described resistance R7, and the colelctor electrode of described audion Q4 connects the pin 3 of described electromagnetic relay by described resistance R8；
The pin 1 of described electromagnetic relay is started to exchange fire line, pin 2 circuit closer of described electromagnetic relay.
Preferably, described electrical equipment is at least one in electric light, electric fan, electric heater, electromagnetic oven.
Also constructing a kind of single live wire switch at this utility model, described single live wire switch includes the above single live wire power getting circuit utilizing electromagnetic relay.
Implement a kind of single live wire power getting circuit utilizing electromagnetic relay of the present utility model and single live wire switch, have the advantages that a kind of single live wire power getting circuit utilizing electromagnetic relay of structure, including: electromagnetic relay control circuit, power-supply circuit, comparison circuit, on-off circuit, wherein, described electromagnetic relay control circuit one end connects live wire, the other end connects described power-supply circuit and described on-off circuit respectively, described power-supply circuit connects described comparison circuit, described on-off circuit connects described comparison circuit, and described on-off circuit connects zero line.By implementing this utility model, adopt the control program of relay, it is possible to control powerful electrical equipment；Adopt the electromagnetic relay of low price, be not the magnetic latching relay adopting high price, solve the problem that magnetic latching relay price is high, be conducive to lowering the material cost of complete machine；Adopting the electromagnetic relay control circuit of low-power consumption, after relay Guan Bi, the electric current consumed is far smaller than electric current during normal operation, so reduces the requirement of power taking.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail, in accompanying drawing:
Fig. 1 is the structural representation of a kind of single live wire power getting circuit utilizing electromagnetic relay of this utility model；
Fig. 2 is the structural representation of electromagnetic relay control circuit of the present utility model.
Detailed description of the invention
As depicted in figs. 1 and 2, it is the preferred embodiment of a kind of single live wire power getting circuit utilizing electromagnetic relay of the present utility model.
This utility model discloses a kind of single live wire power getting circuit utilizing electromagnetic relay, including: electromagnetic relay control circuit 101, power-supply circuit 102, comparison circuit 103, on-off circuit 104, wherein,
Electromagnetic relay control circuit 101 one end connects live wire, and the other end connects power-supply circuit 102 and on-off circuit 104 respectively, and power-supply circuit 102 connects comparison circuit 103, and on-off circuit 104 connects comparison circuit 103, and on-off circuit 104 connects zero line.
Utilizing in the single live wire power getting circuit of electromagnetic relay at this utility model, power-supply circuit 102 includes: diode D1, diode D2, Zener diode D3, electric capacity C1, wherein,
The positive pole of diode D1 connects electromagnetic relay control circuit 101, the negative pole of diode D1 connects one end of the positive pole of diode D2, the negative pole of Zener diode D3 and electric capacity C1 respectively, the negative pole of diode D2 and the positive pole of Zener diode D3 connect comparison circuit 103, the other end ground connection of electric capacity C1；
The positive pole of diode D1 arranges sample of signal point, obtains signal A, and the negative pole of diode D2 arranges power taking point VCC.
Utilizing in the single live wire power getting circuit of electromagnetic relay at this utility model, comparison circuit 103 includes: voltage comparator U1, resistance R2, resistance R3, resistance R4, resistance R5, audion Q2, wherein,
The in-phase input end of voltage comparator U1 connects the positive pole of Zener diode D3, and the in-phase input end of voltage comparator U1 passes through resistance R2 ground connection, and the in-phase input end at voltage comparator U1 arranges sample of signal point, obtains signal B；
The inverting input of voltage comparator U1 connects the other end of resistance R3 and resistance R4, resistance R3 respectively and connects supply voltage VCC2, and the inverting input at voltage comparator U1 arranges sample of signal point, obtains signal C；
The colelctor electrode of the other end connecting triode Q2 of resistance R4, the grounded emitter of audion Q2, the base stage of audion Q2 connects the outfan of voltage comparator U1 by resistance R5, the negative pole of the power supply cathode connecting diode D2 of voltage comparator U1, the power supply minus earth of voltage comparator U1.
Utilizing in the single live wire power getting circuit of electromagnetic relay at this utility model, on-off circuit 104 includes: field effect transistor Q1, resistance R1, wherein,
The drain electrode of field effect transistor Q1 connects the positive pole of diode D1, and the grid of field effect transistor Q1 connects the outfan of voltage comparator U1, the source electrode connecting to neutral line of field effect transistor Q1, the source ground of field effect transistor Q1 by resistance R1.
Utilizing in the single live wire power getting circuit of electromagnetic relay at this utility model, electromagnetic relay control circuit 101 includes: electromagnetic relay, audion Q3, audion Q4, resistance R6, resistance R7, resistance R8, diode D4, wherein,
The base stage of audion Q3 connects signal A, the grounded emitter of audion Q3 by resistance R6, and the colelctor electrode of audion Q3 connects the positive pole of diode D4 and the pin 3 of electromagnetic relay respectively, and the negative pole of diode D4 connects the pin 4 of electromagnetic relay；
The base stage of audion Q4 connects signal B, the grounded emitter of audion Q4 by resistance R7, and the colelctor electrode of audion Q4 connects the pin 3 of electromagnetic relay by resistance R8；
The pin 1 of electromagnetic relay is started to exchange fire line, pin 2 circuit closer of electromagnetic relay.
Preferably, electrical equipment is at least one in electric light, electric fan, electric heater, electromagnetic oven.
The single live wire power getting circuit work process that this utility model shown in Fig. 1 is a kind of utilizes electromagnetic relay is:
Illustrate with electrical equipment for electric light, when just starting power up, when electromagnetic relay disconnects, having cut off the loop of the alternating current of 220V, lights, signal A does not have voltage, so the voltage that the voltage of signal C is more than signal B, voltage comparator U1 exports low-voltage, and field effect transistor is in the state of cut-off.
When electromagnetic relay closes, the loop of the alternating current of connection 220V, electric light is lighted, field effect transistor Q1 cut-off during owing to just starting, and exchange supplies electricity to electric capacity C1 charging, makes the voltage of electric capacity C1 slowly to increase, thus can export power taking voltage VCC.When the voltage of electric capacity C1 rises above stabilivolt D3, Zener diode D3 turns on, and signal B voltage raises, the voltage of the signal B voltage more than signal C, voltage comparator U1 output HIGH voltage, and field effect transistor Q1 turns on.
After field effect transistor Q1 turns on, electric capacity C1 can discharge, and its voltage can slowly decline, and can cause that signal B voltage declines, and voltage comparator U1 exports low-voltage, and field effect transistor Q1 ends, and such electric capacity C1 is returned to the state of original charging.
The continuous recharge of electric capacity C1 and discharge process, power taking voltage VCC has had normal voltage to export, and this voltage VCC can just provide current to electromagnetic relay, maintains the closure state of electromagnetic relay.
Shown in Fig. 2, the work process of electromagnetic relay control circuit of the present utility model is:
For the relay of 12V, when running voltage is generally higher than 9V, relay is meeting action, and this is called operation voltage；When running voltage is less than 0.6V, relay just can discharge, and this is called release voltage.The electromagnetic relay control circuit of low-power consumption is to utilize the principle that release voltage is far smaller than operation voltage to realize.
Circuit realiration is as in figure 2 it is shown, when wanting closing relay, first signal A exports high level, and electromagnetic relay is opened, and the electric current at this moment flowing through electromagnetic relay two ends is:
IA=VCC/RL (RL is the coil resistance of relay)
After the relay that waits for a period of time is of completely closed (as: 20 milliseconds), signal B exports high level, then signal A output low level, and the electric current at this moment flowing through relay two ends is:
IB=VCC/ (RL+R8)
As long as adjusting the resistance of R8, it is ensured that the voltage at electromagnetic appliance two ends of continuing more than release voltage, the state that electromagnetic relay just can remain closed.Owing to IB is less than IA, IA switch to IB, so that electromagnetic relay is entered low-power consumption by high power consumption, and also can guarantee that the relay state also in Guan Bi, be achieved in that the electromagnetic relay control circuit of low-power consumption.
This utility model is also disclosed a kind of single live wire switch, and single live wire switch includes above utilizing the single live wire power getting circuit of electromagnetic relay.
Above example only for technology of the present utility model design and feature are described, its object is to allow person skilled in the art will appreciate that content of the present utility model and to implement accordingly, can not limit protection domain of the present utility model.All equalizations done with this utility model right change and modify, and all should belong to the covering scope of this utility model claim.
Claims (7)
1. the single live wire power getting circuit utilizing electromagnetic relay, it is characterized in that, including: electromagnetic relay control circuit (101), power-supply circuit (102), comparison circuit (103), on-off circuit (104), wherein
Described electromagnetic relay control circuit (101) one end connects live wire, the other end connects described power-supply circuit (102) and described on-off circuit (104) respectively, described power-supply circuit (102) connects described comparison circuit (103), described on-off circuit (104) connects described comparison circuit (103), and described on-off circuit (104) connects zero line.
2. the single live wire power getting circuit utilizing electromagnetic relay according to claim 1, it is characterised in that described power-supply circuit (102) including: diode D1, diode D2, Zener diode D3, electric capacity C1, wherein,
The positive pole of described diode D1 connects described electromagnetic relay control circuit (101), the negative pole of described diode D1 connects one end of the positive pole of described diode D2, the negative pole of described Zener diode D3 and described electric capacity C1 respectively, the negative pole of described diode D2 and the positive pole of described Zener diode D3 connect described comparison circuit (103), the other end ground connection of described electric capacity C1；
The positive pole of described diode D1 arranges sample of signal point, obtains signal A, and the negative pole of described diode D2 arranges power taking point VCC.
3. the single live wire power getting circuit utilizing electromagnetic relay according to claim 2, it is characterised in that described comparison circuit (103) including: voltage comparator U1, resistance R2, resistance R3, resistance R4, resistance R5, audion Q2, wherein,
The in-phase input end of described voltage comparator U1 connects the positive pole of described Zener diode D3, and the in-phase input end of described voltage comparator U1 passes through described resistance R2 ground connection, and the in-phase input end at described voltage comparator U1 arranges sample of signal point, obtains signal B；
The inverting input of described voltage comparator U1 connects the other end of described resistance R3 and described resistance R4, described resistance R3 respectively and connects supply voltage VCC2, and the inverting input at described voltage comparator U1 arranges sample of signal point, obtains signal C；
The other end of described resistance R4 connects the colelctor electrode of described audion Q2, the grounded emitter of described audion Q2, the base stage of described audion Q2 connects the outfan of described voltage comparator U1 by described resistance R5, the power supply positive pole of described voltage comparator U1 connects the negative pole of described diode D2, the power supply minus earth of described voltage comparator U1.
4. the single live wire power getting circuit utilizing electromagnetic relay according to claim 3, it is characterised in that described on-off circuit (104) including: field effect transistor Q1, resistance R1, wherein,
The drain electrode of described field effect transistor Q1 connects the positive pole of described diode D1, and the grid of described field effect transistor Q1 connects the outfan of described voltage comparator U1, the source electrode connecting to neutral line of described field effect transistor Q1, the source ground of described field effect transistor Q1 by described resistance R1.
5. the single live wire power getting circuit utilizing electromagnetic relay according to claim 3, it is characterized in that, described electromagnetic relay control circuit (101) including: electromagnetic relay, audion Q3, audion Q4, resistance R6, resistance R7, resistance R8, diode D4, wherein
The base stage of described audion Q3 connects signal A by described resistance R6, the grounded emitter of described audion Q3, the colelctor electrode of described audion Q3 connects the positive pole of described diode D4 and the pin 3 of described electromagnetic relay respectively, and the negative pole of described diode D4 connects the pin 4 of described electromagnetic relay；
The base stage of described audion Q4 connects signal B, the grounded emitter of described audion Q4 by described resistance R7, and the colelctor electrode of described audion Q4 connects the pin 3 of described electromagnetic relay by described resistance R8；
The pin 1 of described electromagnetic relay is started to exchange fire line, pin 2 circuit closer of described electromagnetic relay.
6. the single live wire power getting circuit utilizing electromagnetic relay according to claim 5, it is characterised in that described electrical equipment is at least one in electric light, electric fan, electric heater, electromagnetic oven.
7. single live wire switch, it is characterised in that described single live wire switch includes the arbitrary described single live wire power getting circuit utilizing electromagnetic relay of claim 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620056709.8U CN205385465U (en) | 2016-01-20 | 2016-01-20 | Utilize single live wire of electromagnetic relay to get circuit and single live wire switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620056709.8U CN205385465U (en) | 2016-01-20 | 2016-01-20 | Utilize single live wire of electromagnetic relay to get circuit and single live wire switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205385465U true CN205385465U (en) | 2016-07-13 |
Family
ID=56348740
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620056709.8U Active CN205385465U (en) | 2016-01-20 | 2016-01-20 | Utilize single live wire of electromagnetic relay to get circuit and single live wire switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205385465U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106526365A (en) * | 2016-10-25 | 2017-03-22 | 深圳市欧瑞博电子有限公司 | Single-live-wire power consumption data measurement method and single-live-wire intelligent breaker |
| CN106879151A (en) * | 2017-04-28 | 2017-06-20 | 上海紫光乐联物联网科技有限公司 | Intelligent single live wire on-off circuit and control method |
| CN107148132A (en) * | 2017-05-31 | 2017-09-08 | 姚朝霞 | A kind of single live wire ON state power-supply circuit |
| CN108271299A (en) * | 2016-12-30 | 2018-07-10 | 欧普照明股份有限公司 | A kind of single live wire power getting device and single firewire switch |
| CN109219211A (en) * | 2017-07-11 | 2019-01-15 | 宁波公牛电器有限公司 | One kind taking electric control circuit, intelligent control switch and intelligent illuminating system |
| CN111194132A (en) * | 2020-02-12 | 2020-05-22 | 西安奇妙电子科技有限公司 | Single live wire power-taking circuit and single live wire switch |
-
2016
- 2016-01-20 CN CN201620056709.8U patent/CN205385465U/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106526365A (en) * | 2016-10-25 | 2017-03-22 | 深圳市欧瑞博电子有限公司 | Single-live-wire power consumption data measurement method and single-live-wire intelligent breaker |
| CN108271299A (en) * | 2016-12-30 | 2018-07-10 | 欧普照明股份有限公司 | A kind of single live wire power getting device and single firewire switch |
| CN106879151A (en) * | 2017-04-28 | 2017-06-20 | 上海紫光乐联物联网科技有限公司 | Intelligent single live wire on-off circuit and control method |
| CN106879151B (en) * | 2017-04-28 | 2023-11-10 | 上海紫光乐联物联网科技有限公司 | Intelligent single-live wire switching circuit |
| CN107148132A (en) * | 2017-05-31 | 2017-09-08 | 姚朝霞 | A kind of single live wire ON state power-supply circuit |
| CN107148132B (en) * | 2017-05-31 | 2023-08-18 | 姚朝霞 | Single live wire on-state power taking circuit |
| CN109219211A (en) * | 2017-07-11 | 2019-01-15 | 宁波公牛电器有限公司 | One kind taking electric control circuit, intelligent control switch and intelligent illuminating system |
| CN111194132A (en) * | 2020-02-12 | 2020-05-22 | 西安奇妙电子科技有限公司 | Single live wire power-taking circuit and single live wire switch |
| CN111194132B (en) * | 2020-02-12 | 2022-02-15 | 西安奇妙电子科技有限公司 | Single live wire power-taking circuit and single live wire switch |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205385465U (en) | Utilize single live wire of electromagnetic relay to get circuit and single live wire switch | |
| CN103226347B (en) | Personalized switchgear and control method thereof | |
| CN203799201U (en) | Power supply control device | |
| CN201335958Y (en) | Zero-crossing circuit capable of realizing standby zero-power of household appliances | |
| CN201556975U (en) | Standby automatic power-off device with intelligence, safety and energy conservation | |
| CN204535124U (en) | The delay control circuit of warm-air drier and there is its warm-air drier | |
| CN105491764A (en) | Timing mode switching control circuit for corridor lamplight | |
| CN203217292U (en) | State machine-based multifunctional electronic appliance control circuit | |
| CN203516140U (en) | Energy-saving ventilating fan capable of automatically stopping running | |
| CN201937881U (en) | Toilet energy-saving lighting device | |
| CN204118399U (en) | A kind of energy-saving socket with WIFI hot spot function | |
| CN207183695U (en) | A kind of Intelligent extension socket | |
| CN208207574U (en) | Intelligent Internet of things socket controller | |
| CN201523234U (en) | Partition controllable energy-saving device | |
| CN205621964U (en) | Intelligence picture peg | |
| CN204832895U (en) | Peak valley power consumption regulating switch | |
| CN203278788U (en) | Power-saving switch | |
| CN207939806U (en) | A kind of lamps intelligent control circuit | |
| CN203191726U (en) | Light-operated type electrical load switcher | |
| CN204557158U (en) | A kind of intelligent bathroom heater | |
| CN201741941U (en) | Micro-power infrared sensing power socket | |
| CN218450076U (en) | Circuit for automatically closing power switch in power failure | |
| CN203178715U (en) | Solar-powered standby power supply device | |
| CN209216834U (en) | The power down switch of electric appliance | |
| CN206042483U (en) | Circuit, use intelligence switch of this circuit and use electric system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |