CN203366023U - AC control switch device and intelligent control system - Google Patents
AC control switch device and intelligent control system Download PDFInfo
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- CN203366023U CN203366023U CN 201320397727 CN201320397727U CN203366023U CN 203366023 U CN203366023 U CN 203366023U CN 201320397727 CN201320397727 CN 201320397727 CN 201320397727 U CN201320397727 U CN 201320397727U CN 203366023 U CN203366023 U CN 203366023U
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- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 42
- 229910052710 silicon Inorganic materials 0.000 claims description 42
- 239000010703 silicon Substances 0.000 claims description 42
- 230000002457 bidirectional effect Effects 0.000 claims description 34
- 230000001419 dependent effect Effects 0.000 claims description 11
- 230000005670 electromagnetic radiation Effects 0.000 abstract description 5
- 230000001939 inductive effect Effects 0.000 description 8
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- OKUGPJPKMAEJOE-UHFFFAOYSA-N S-propyl dipropylcarbamothioate Chemical compound CCCSC(=O)N(CCC)CCC OKUGPJPKMAEJOE-UHFFFAOYSA-N 0.000 description 4
- 102100039365 Tachykinin-4 Human genes 0.000 description 4
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Abstract
The utility model discloses an AC control switch device and an intelligent control system. The AC control switch device includes a power interface used for being connected with a load, a switch module used for controlling power-supplying states of the power interface, a switch driving module used for controlling working states of the switch module, a current driving module used for generating corresponding driving current according to electrical-level states of external control signals so as to trigger the switch driving module, and a switch protecting module used for protecting the switch module. The current driving module, the switch driving module, the switch module and the power interface are connected in order. The switch protecting module is connected with the switch module and a livewire connection terminal. The power interface is connected with a zero-line connection terminal. The device has the characteristics of long service life, high reliability, zero noise pollution and low electromagnetic radiation and the like because no mechanical switch is used. To adapt to electrical loads of a plurality of types, a plurality of protective measures are added so that reliability of the AC control switch device is further improved.
Description
Technical field
The utility model relates to the electrical appliances intelligent control technology, particularly a kind of interchange gauge tap device and intelligent control system.
Background technology
In smart home control system, people can carry out Based Intelligent Control to the power switch of household electrical appliance, and so both removed the user from needs manual turning on the power switch while making electrical appliance at every turn, the troublesome operation of manual powered-down switch again after finishing using.
At present, generally adopt electromagnetic type relay to carry out the power switch of control apparatus equipment as the interchange gauge tap, control adhesive and the release of contact point by electromagnetic induction, realize the control to the electric equipment power supply.Because the contact point of this electromagnetic type relay is mechanical switch, during being controlled, the power switch of household electrical appliances has some shortcomings: 1, noise pollution is arranged during the electromagnetic type relay energising; When 2, electromagnetic type relay is connected, electromagnetic radiation is arranged, health is threatened; 3, owing to being mechanical switch, contact adhesion occurs sometimes, sometimes also have spark, its poor stability, serviceable life are short.
In addition, also there is a lot of difference in the household electrical appliance load that people use, and some load is that capacity load, some load are inductive load.And, when load is transshipped, generally adopt the protection of Fuse Type fuse, after blown fuse, needing to change fuse could work.
The characteristics of capacity load are it can reach running current at the surge impact electric current of booting moment 20 ~ 40 times, even more; This surge impact electric current can damage the interchange gauge tap.The general guard method that adopts series connection fixed value resistance in exchanging gauge tap at present.The requirement of this fixed value resistance has: the power that one, it consumes is low; Two, the selection of fixed value resistor power parameter is relevant with the working current of load; When the loaded work piece electric current is larger, the power of fixed value resistance also will increase, thereby needs to use powerful resistance, but the volume of high-power resistance can be larger, and price is also higher; And, when circuit overload occurs again or during short circuit, the fixed value resistance of general power is easy to can't stand large electric current and moment just burns out owing to holding.
The topmost characteristics of inductive load are them in power-off moment, effect due to electromagnetic induction, it will produce flashy high voltage, and it and supply voltage are superimposed and act on the gauge tap two ends, easily burn out and exchange gauge tap (as the contact of electromagnetic relay).The general employing exchanging RC absorbing circuit in parallel on gauge tap (being connected in parallel on the two ends of U2 after the RC series connection) at present; and RC will adopt high voltage power device; its cost is higher; and the parameter of resistance and electric capacity need to be selected through experiment repeatedly; and the RC absorbing circuit is only just applicable for specific inductive load protection, to not effect of capacitive load.
Thereby prior art need to improve.
Summary of the invention
In view of above-mentioned the deficiencies in the prior art part; the purpose of this utility model is to provide a kind of interchange gauge tap device and intelligent control system, with solve existing exchange the gauge tap reliability low, can not be simultaneously for capacity load and inductive load protection, exchange the problem of gauge tap device.
In order to achieve the above object, the utility model has been taked following technical scheme:
A kind of interchange gauge tap device, it comprises:
For accessing the power interface of load;
For controlling the switch module of power supply state of power interface;
The switch drive module that is used for the duty of gauge tap module;
For produce the current drives module of corresponding drive current trigger switch driver module according to the level state of external control signal;
Switch protection module for the protection of described switch module;
Described current drives module, switch drive module, switch module are connected successively with power interface; described switch protection module connects described switch module and the hot terminal that exchanges the gauge tap device, and power interface connects the zero line terminals that exchange the gauge tap device.
In described interchange gauge tap device, described current drives module comprises the first resistance, the second resistance and triode; One end of described the second resistance connect to exchange the external control signal receiving end of gauge tap device, also by the base stage of the first resistance connecting triode, the other end ground connection of described the second resistance; The collector connecting valve driver module of described triode, the grounded emitter of triode.
In described interchange gauge tap device, described current drives module also comprises the 3rd resistance, and an end of described the 3rd resistance connects described switch drive module, and the other end of the 3rd resistance connects the DC-voltage supply end.
In described interchange gauge tap device, described switch drive module comprises optocoupler controlled silicon chip, the 4th resistance and the 5th resistance, the 1st pin of described optocoupler controlled silicon chip connects an end of the 3rd resistance, the collector of the 2nd pin connecting triode of optocoupler controlled silicon chip, the 3rd pin of optocoupler controlled silicon chip is by the first end of the 4th resistance connecting valve module, the second end of the 4th pin connecting valve module of optocoupler controlled silicon chip, also by the 3rd end of the 5th resistance connecting valve module.
In described interchange gauge tap device, described switch module is bidirectional triode thyristor, the live wire end that the first anode of described bidirectional triode thyristor connects power interface and switch protection module, also by the 5th resistance, be connected the 4th pin of optocoupler controlled silicon chip, the second anode connecting valve protection module of described bidirectional triode thyristor, also by the 4th resistance, connect the 3rd pin of optocoupler controlled silicon chip, the control utmost point of described bidirectional triode thyristor connects the 4th pin of optocoupler controlled silicon chip; The zero line side of described power interface connects described zero line terminals.
In described interchange gauge tap device; described switch protection module comprises the first protective resistance, the second protective resistance and the 3rd protective resistance; one end of described the first protective resistance connects the first anode of bidirectional triode thyristor and the live wire end of power interface, the other end of the first protective resistance connect bidirectional triode thyristor second anode, also be connected described hot terminal by the second protective resistance with the 3rd protective resistance successively.
In described interchange gauge tap device, described the first protective resistance is voltage dependent resistor (VDR).
In described interchange gauge tap device, described the second protective resistance is negative temperature coefficient thermis.
In described interchange gauge tap device, described the 3rd protective resistance is the positive temperature coefficient thermistor.
A kind of intelligent control system, it comprises for generation of the controller of external control signal and the above-mentioned gauge tap device that exchanges, described controller connects and exchanges the gauge tap device.
Compared to prior art, interchange gauge tap device and intelligent control system that the utility model provides, owing to not using mechanical switch, have that the life-span is high, reliability is high, characteristics such as noise-less pollution, electromagnetic radiation are little; And the switch protection module exchanged in the gauge tap device can be applicable to capacitive character, inductive load; realized effectively protecting exchanging the gauge tap device; and this switch protection module also has overload protection function, further improved interchange gauge tap device reliability.
The accompanying drawing explanation
Fig. 1 is the structured flowchart that the utility model exchanges the gauge tap device.
Fig. 2 is the circuit diagram that the utility model exchanges the gauge tap device.
Embodiment
The utility model provides a kind of interchange gauge tap device and intelligent control system, clearer, clear and definite for making the purpose of this utility model, technical scheme and effect, referring to the accompanying drawing embodiment that develops simultaneously, the utility model is further described.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
Refer to Fig. 1, it is the structured flowchart of the utility model interchange gauge tap device.The interchange gauge tap application of installation that the utility model provides is in the intelligent control system of household electrical appliance, can realize the live wire in the electric main of 220V is carried out to switch control, by intelligent control system output external control signal, control the open and close state that exchanges the gauge tap device.
As shown in Figure 1, interchange gauge tap device of the present utility model comprises: power interface J1, switch module 10, switch drive module 20, current drives module 30 and switch protection module 40.Described current drives module 30, switch drive module 20, switch module 10 and power interface J1 are connected successively; described switch protection module 40 connects described switch module 10 and the hot terminal L-220V that exchanges the gauge tap device, and power interface J1 connects the zero line terminals N-220V that exchanges the gauge tap device.
Described hot terminal L-220V and zero line terminals N-220V directly are connected live wire and the zero line of family expenses civil power, and described power interface J1 is for accessing load, as electric equipment; Switch module 10, for controlling the power supply state of power interface J1, is controlled the break-make of the power supply of power interface, whether determines powering load; Described switch drive module 20 is for the duty of gauge tap module 10, i.e. the state of gauge tap module 10 conductings and disconnection; Described current drives module 30 produces corresponding drive current trigger switch driver module 20 for the level state according to external control signal LOGIC-IN.
Interchange gauge tap device of the present utility model, receive by current drives module 30 the external control signal LOGIC-IN that the CPU control end (being the external control signal receiving end J2 shown in Fig. 1 and Fig. 2) in intelligent control system is exported, when external control signal LOGIC-IN is high level, current drives module 30 produces drive current opens switch drive module 20, thereby switch module 10 conductings are powered to power interface J1; When external control signal LOGIC-IN is low level, current drives module 30 does not have drive current to produce, and switch drive module 20 is closed and do not worked, thereby switch module 10 is disconnected, and does not give power interface J1 power supply.Simultaneous Switching protection module 40 can be protected switch module 10 according to capacity load and inductive load, and can be when load be transshipped protection switch module 10.
See also Fig. 2, in interchange gauge tap device of the present utility model, described current drives module 30 comprises the first resistance R 1, the second resistance R 2 and triode Q1.One end of described the second resistance R 2 connects the external control signal receiving end J2 that exchanges the gauge tap device, the base stage that also by the first electric R1, hinders connecting triode Q1, the other end ground connection of described the second resistance R 2; The collector connecting valve driver module 20 of described triode Q1, the grounded emitter of triode Q1.
Wherein, described triode Q1 is the NPN triode, when base stage is high level, and triode Q1 conducting.Certainly in other embodiments, this triode Q1 can also adopt the metal-oxide-semiconductor of respective type to replace or adopt the PNP triode to add the circuit structure replacement of phase inverter, and the utility model is not restricted this.
In the present embodiment, described current drives module 30 also comprises the 3rd resistance R 3, and the other end that an end of described the 3rd resistance R 3 connects described switch drive module 20, the three resistance R 3 connects 5V DC-voltage supply end V1.The 3rd resistance R 3 is current-limiting resistance, after the parameter value of the 3rd resistance R 3 is determined, even the control voltage of external control signal LOGIC-IN has some fluctuations, also can guarantee to flow through the current constant of switch drive module 20.
Please continue to consult Fig. 1 and Fig. 2, described switch drive module 20 comprises optocoupler controlled silicon chip U1, the 4th resistance R 4 and the 5th resistance R 5, the 1st pin of described optocoupler controlled silicon chip U1 connects an end of the 3rd resistance R 3, the collector of the 2nd pin connecting triode Q1 of optocoupler controlled silicon chip U1, the 3rd pin of optocoupler controlled silicon chip U1 is by the first end of the 4th resistance R 4 connecting valve modules 10
, the second end of the 4th pin connecting valve module 10 of optocoupler controlled silicon chip U1
, also by the 3rd end of the 5th resistance R 5 connecting valve modules 10
.
In the present embodiment, optocoupler controlled silicon chip U1 adopts the optocoupler controlled silicon chip of the compact package of four pins.When triode Q1 conducting, constant electric current flows through the luminotron in optocoupler controlled silicon chip U1, triggers the controlled silicon conducting in optocoupler controlled silicon chip U1, and the voltage increases of the 4th resistance R 4 and the 5th resistance R 5 is opened switch module 10; When triode Q1 ends, do not have electric current to flow through the luminotron in optocoupler controlled silicon chip U1, the not conducting of controllable silicon in optocoupler controlled silicon chip U1, the 4th resistance R 4 and the 5th resistance R 5 do not have electric current to flow through, and switch module 10 is closed.
In interchange gauge tap device of the present utility model, the 3rd resistance R 3, for guaranteeing to flow through the luminotron current constant of optocoupler controlled silicon chip U1, has guaranteed that optocoupler controlled silicon chip U1 is operated in the rated current state.
Described switch module 10 is bidirectional triode thyristor U2, and it is for exchanging nucleus module of gauge tap device, and because bidirectional triode thyristor U2 is not mechanical switch, it has, and the life-span is high, reliability is high, noise-less pollution, the little characteristics of electromagnetic radiation.
In the utility model embodiment, the live wire end L that the first anode T1 of described bidirectional triode thyristor U2 connects power interface J1 and switch protection module 40, also by the 5th resistance R 5, be connected the 4th pin of optocoupler controlled silicon chip U1, the second anode T2 connecting valve protection module 40 of described bidirectional triode thyristor U2, also by the 4th resistance R 4, connect the 3rd pin of optocoupler controlled silicon chip U1, the control utmost point of described bidirectional triode thyristor U2 connects the 4th pin of optocoupler controlled silicon chip U1; The zero line side N of described power interface J1 connects described zero line terminals N-220V.
In order to make to exchange the protection that the gauge tap device adapts to capacity load, voltage load and overload, described switch protection module 40 comprises the first protective resistance R6, the second protective resistance R7 and the 3rd protective resistance R8.The end of described the first protective resistance R6 connects the first anode T1 of bidirectional triode thyristor U2 and the live wire end L of power interface J1, the other end of the first protective resistance R6 connect bidirectional triode thyristor U2 second anode T2, also be connected described hot terminal L-220V by the second protective resistance R7 with the 3rd protective resistance R8 successively.
When exchanging the gauge tap device and connect inductive load, by the first protective resistance R6 for switch module 10 is protected; When exchanging the gauge tap device and connect capacity load, by the second protective resistance R7 for switch module 10 is protected; When load is transshipped, by the 3rd protective resistance R8 for switch module 10 is protected.
Below respectively the principle of work of the first protective resistance R6, the second protective resistance R7 and the 3rd protective resistance R8 is elaborated:
1, the first protective resistance
Described the first protective resistance R6 is voltage dependent resistor (VDR), and this voltage dependent resistor (VDR) is attempted by the two ends of bidirectional triode thyristor U2, and is connected with the live wire end L of power interface J1, the induced voltage produced when effectively the absorption inductor load is cut off the power supply, and protection bidirectional triode thyristor U2 can not damage.
When bidirectional triode thyristor U2 disconnects, inductive load produces the induced voltage of moment, and this voltage and supply voltage are superimposed at the two ends of bidirectional triode thyristor U2, surpasses possibly the withstand voltage of bidirectional triode thyristor U2; The utility model adopts the two ends that voltage dependent resistor (VDR) are connected in parallel on to bidirectional triode thyristor U2; when bidirectional triode thyristor U2 disconnects; the instant high-voltage produced can make the resistance of voltage dependent resistor (VDR) diminish, and plays the effect that absorbs induced voltage, thereby reaches the purpose of protection Primary Component bidirectional triode thyristor U2.And the cost of voltage dependent resistor (VDR) can be more not expensive than the RC absorbing circuit used in prior art yet, and select general this index of deboost of considering it that only needs to get final product to the parameter of voltage dependent resistor (VDR), device is selected simple, and because the economize on electricity appearance of pressure sensitive voltage is very little, on almost not impact of capacitive load.
In specific implementation process, the first protective resistance R6 generally selects the voltage dependent resistor (VDR) that pressure sensitive voltage is 1.5 times of supply voltage peak values; For example, when exchanging in the electric main of gauge tap application of installation at 220VAC, select the voltage dependent resistor (VDR) of 470V pressure sensitive voltage more suitable, if pressure sensitive voltage is too high, the effect of its restriction reverse voltage is by undesirable.
2, the second protective resistance
Described the second protective resistance R7 is negative temperature coefficient thermis (NTC, Negative Temperature Coefficient), to the protection employing series connection NTC mode of bidirectional triode thyristor U2.At normal temperatures, NTC resistance has certain initial resistivity value, after normal work, has certain electric current to flow through NTC resistance, makes the NTC resistance heating, and resistance reduces.And it is a lot of that the working current that NTC resistance generally bears is greater than common power resistance, even if, when overload or short circuit occur, it also has certain reaction time, so that overload protection device the 3rd protective resistance onset, and be unlikely to burn out self.
When load is capacitive load, bidirectional triode thyristor U2 has very large dash current rigidly connecting when logical, the bearing value that has surpassed possibly bidirectional triode thyristor U2, the utility model adopts series connection NTC resistance in power path, it has certain initial resistance, in bidirectional triode thyristor U2 conducting moment, because the time of surge impact electric current is very short, NTC resistance still keeps initial resistivity value substantially in the time at surge, can play the effect of surge current suppression; When circuit works, there is stable electric current to flow through NTC resistance, NTC resistance heating now, resistance reduces, and its consumption to power is very little.During concrete enforcement, the value of this negative tempperature coefficient thermistor generally selects initial resistance in 10 ohm, when normal operation, should make its heating, and resistance reduces, and generally will be reduced to 2 ohm and be advisable with interior.
3, the 3rd protective resistance
Described the 3rd protective resistance R8 is positive temperature coefficient thermistor (PPTC, Polyer Positive Temperature Coefficient, high molecular polymer positive coefficient temperature and resistance, that is: high molecular positive temp thermistor).The utility model adopts series connection PPTC resistance in power path, and when overload occurs, PPTC resistance can heat up, be disconnected to fast its high resistance state rapidly, and electric current is reduced to low-down level; After the overload fault is got rid of, after the temperature of posistor is recovered, resistance value also can return to very low resistance state; Played the protective effect to bidirectional triode thyristor U2.
It is than the Fuse Type fuse, and it is recoverable, and after only needing to cut off overload source or short circuit source, after the PPTC resistance temperature recovers, circuit can work again.Certainly, the parameter of posistor is selected to consider carefully, sufficient protection allowance is arranged, as the rated current of in use load is 0.5A, just can select the IH(25 ℃ of maximum operating currenbt under still air) for 0.5A, the minimum working current under its IT(25 ℃ still air like this) parameter is generally 1A, like this when the electric current that is greater than 1A flows through, the resistance of voltage dependent resistor (VDR) will increase, can the starting protection effect; Its Itrip(overload current) parameter is generally 2A, and when surpassing the overload current certain hour, posistor will be blocked, and the electric current of overload is larger certainly, and actuation time is generally faster.
Below in conjunction with Fig. 2, the principle of work of interchange gauge tap device of the present utility model is elaborated:
This interchange gauge tap adopts logical signal to control the break-make of 220VAC civil power, the CPU output of external control signal LOGIC-IN in the external smart system, when external control signal LOGIC-IN is high level, make triode Q1 conducting, have constant electric current to flow through the luminotron in optocoupler controlled silicon chip U1, it triggers the controlled silicon conducting in optocoupler controlled silicon chip U1; After controlled silicon conducting in optocoupler controlled silicon chip U1, the voltage increases at the 4th resistance R 4 and the 5th resistance R 5 two ends, make bidirectional triode thyristor U2 conducting, exchanges the conducting of gauge tap device; When external control signal LOGIC-IN is low level, triode Q1 cut-off, do not have electric current to flow through the luminotron in optocoupler controlled silicon chip U1, not conducting of controllable silicon in optocoupler controlled silicon chip U1, in the 4th resistance R 4 and the 5th resistance R 5, do not have electric current to flow through yet, not conducting of bidirectional triode thyristor U2, also exchange the gauge tap device and disconnect.
The utility model also provides a kind of intelligent control system, and it comprises controller and exchanges the gauge tap device, described controller connection interchange gauge tap device, and for generation of the external control signal of high and low level, control exchanges the work of gauge tap device.Owing to above this interchange gauge tap device being have been described in detail, repeat no more herein.
In sum, interchange gauge tap device and intelligent control system that the utility model provides, owing to not using mechanical switch, have that the life-span is high, reliability is high, characteristics such as noise-less pollution, electromagnetic radiation are little.
In addition, its circuit structure of interchange gauge tap device of the present utility model is simple, cost is low, for adapting to polytype electric appliance load, has added the kinds of protect measure, has further improved the reliability that exchanges the gauge tap device, is applicable to promoting the use.
Be understandable that; for those of ordinary skills; can be equal to replacement or change according to the technical solution of the utility model and utility model design thereof, and all these changes or replacement all should belong to the protection domain of the appended claim of the utility model.
Claims (10)
1. one kind exchanges the gauge tap device, it is characterized in that, comprising:
For accessing the power interface of load;
For controlling the switch module of power supply state of power interface;
The switch drive module that is used for the duty of gauge tap module;
For produce the current drives module of corresponding drive current trigger switch driver module according to the level state of external control signal;
Switch protection module for the protection of described switch module;
Described current drives module, switch drive module, switch module are connected successively with power interface; described switch protection module connects described switch module and the hot terminal that exchanges the gauge tap device, and power interface connects the zero line terminals that exchange the gauge tap device.
2. interchange gauge tap device according to claim 1, is characterized in that, described current drives module comprises the first resistance, the second resistance and triode; One end of described the second resistance connect to exchange the external control signal receiving end of gauge tap device, also by the base stage of the first resistance connecting triode, the other end ground connection of described the second resistance; The collector connecting valve driver module of described triode, the grounded emitter of triode.
3. interchange gauge tap device according to claim 2, is characterized in that, described current drives module also comprises the 3rd resistance, and an end of described the 3rd resistance connects described switch drive module, and the other end of the 3rd resistance connects the DC-voltage supply end.
4. interchange gauge tap device according to claim 3, it is characterized in that, described switch drive module comprises optocoupler controlled silicon chip, the 4th resistance and the 5th resistance, the 1st pin of described optocoupler controlled silicon chip connects an end of the 3rd resistance, the collector of the 2nd pin connecting triode of optocoupler controlled silicon chip, the 3rd pin of optocoupler controlled silicon chip is by the first end of the 4th resistance connecting valve module, the second end of the 4th pin connecting valve module of optocoupler controlled silicon chip, also by the 3rd end of the 5th resistance connecting valve module.
5. interchange gauge tap device according to claim 4, it is characterized in that, described switch module is bidirectional triode thyristor, the live wire end that the first anode of described bidirectional triode thyristor connects power interface and switch protection module, also by the 5th resistance, be connected the 4th pin of optocoupler controlled silicon chip, the second anode connecting valve protection module of described bidirectional triode thyristor, also by the 4th resistance, connect the 3rd pin of optocoupler controlled silicon chip, the control utmost point of described bidirectional triode thyristor connects the 4th pin of optocoupler controlled silicon chip; The zero line side of described power interface connects described zero line terminals.
6. interchange gauge tap device according to claim 5; it is characterized in that; described switch protection module comprises the first protective resistance, the second protective resistance and the 3rd protective resistance; one end of described the first protective resistance connects the first anode of bidirectional triode thyristor and the live wire end of power interface, the other end of the first protective resistance connect bidirectional triode thyristor second anode, also be connected described hot terminal by the second protective resistance with the 3rd protective resistance successively.
7. interchange gauge tap device according to claim 6, is characterized in that, described the first protective resistance is voltage dependent resistor (VDR).
8. interchange gauge tap device according to claim 6, is characterized in that, described the second protective resistance is negative temperature coefficient thermis.
9. interchange gauge tap device according to claim 6, is characterized in that, described the 3rd protective resistance is the positive temperature coefficient thermistor.
10. an intelligent control system, is characterized in that, comprises controller and the gauge tap device that exchanges as described as claim 1-9 any one for generation of external control signal, and described controller connects interchange gauge tap device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320397727 CN203366023U (en) | 2013-07-05 | 2013-07-05 | AC control switch device and intelligent control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320397727 CN203366023U (en) | 2013-07-05 | 2013-07-05 | AC control switch device and intelligent control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203366023U true CN203366023U (en) | 2013-12-25 |
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ID=49813766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320397727 Expired - Fee Related CN203366023U (en) | 2013-07-05 | 2013-07-05 | AC control switch device and intelligent control system |
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| Country | Link |
|---|---|
| CN (1) | CN203366023U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106711956A (en) * | 2017-01-11 | 2017-05-24 | 长沙群瑞电子科技有限公司 | Over-voltage and under-voltage protective circuit |
| CN108735549A (en) * | 2017-04-18 | 2018-11-02 | 徐政村 | Power switch module |
| CN114552965A (en) * | 2022-04-25 | 2022-05-27 | 深圳市暗能量电源有限公司 | Surge current suppression circuit, switching power supply and chip |
-
2013
- 2013-07-05 CN CN 201320397727 patent/CN203366023U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106711956A (en) * | 2017-01-11 | 2017-05-24 | 长沙群瑞电子科技有限公司 | Over-voltage and under-voltage protective circuit |
| CN108735549A (en) * | 2017-04-18 | 2018-11-02 | 徐政村 | Power switch module |
| CN108735549B (en) * | 2017-04-18 | 2020-01-07 | 徐政村 | Power switch module |
| CN114552965A (en) * | 2022-04-25 | 2022-05-27 | 深圳市暗能量电源有限公司 | Surge current suppression circuit, switching power supply and chip |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
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Granted publication date: 20131225 Termination date: 20200705 |