CN101361245A - Device for limiting current of electric appliance - Google Patents
Device for limiting current of electric appliance Download PDFInfo
- Publication number
- CN101361245A CN101361245A CNA2006800423921A CN200680042392A CN101361245A CN 101361245 A CN101361245 A CN 101361245A CN A2006800423921 A CNA2006800423921 A CN A2006800423921A CN 200680042392 A CN200680042392 A CN 200680042392A CN 101361245 A CN101361245 A CN 101361245A
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- power supply
- detecting unit
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- current
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- 230000007257 malfunction Effects 0.000 claims abstract description 6
- 238000001514 detection method Methods 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008034 disappearance Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/20—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for electronic equipment
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/02—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Emergency Protection Circuit Devices (AREA)
- Control Of Voltage And Current In General (AREA)
Abstract
Provided is a device for limiting a current of electric appliance. The current limiting device includes: at least two loads; at least two load driving units connected to the loads to control applying power to the loads; a power detecting unit detecting a power type; a micom controlling the load driving unit according to the power type detected by the power detecting unit to drive the load using a current flowing into the load within an allowable value; and at least one current limiting unit connected to at least one control line connecting the micom and the load driving unit and limiting a current of the load driving unit connected to the control line when the micom malfunctions by using a control signal of the micom and a signal of the power type detected from the power detecting unit as an input signal.
Description
Technical field
The present invention relates to a kind of device that is used to limit the electric current of electrical equipment, more particularly, relate to a kind of device for limiting current of electric appliance, this device is by satisfying the allowable current that can more safely limit electrical equipment according to the standard of input power supply type (single-phase, two-phase and three-phase).
Background technology
Need at electrical equipment to limit its total output according to standard and power safety under the situation of high output.That is, total output of the electrical equipment of use domestic power supply can be in the allowable current corresponding with power standard.
For this reason, detect by connection status the power line of product determine power supply type after, the total output that limits the total load of electrical equipment and be used for total load according to the standard corresponding with power supply type.That is the total magnitude of current of restriction.
In more detail, power supply type can be single-phase, two-phase and three-phase.In two-phase, only use the two-phase in the three phase mains.This notion will be applied to the present invention.When power supply type not simultaneously, set current capacity according to power standard.For example, when the power line of product is single-phase or three phase times, allowable current is relatively large 40A, and when the power line of product be two phase times, allowable current is 16A.Therefore, Dui Ying output need be in allowable current.
Hereinafter, being example with the heater of cook utensil describes the current-limiting apparatus of prior art.
The current-limiting apparatus of prior art comprises: be connected to power line and input power supply type (that is, single-phase, two-phase or three-phase) is carried out the power supply detecting unit of sensing; Be connected to heater so that corresponding heater is carried out the relay of switch according to one-to-one relationship; And microcomputer, be used for coming the on/off of control relay so that operate heater selectively according to the power supply type that the power supply detecting unit is detected.
In addition, although power line is a two-phase, when make surpassing total current capacity and input operation condition, user's operate heater makes when surpassing total current capacity, in order to import the safety of power supply and electrical equipment, the operation of microcomputer restriction heater.Microcomputer is with the operation of software mode restriction heater.
But when having only microcomputer according to the total output of power standard restriction, under the situation of micom malfunction, electric current can surpass allowable current suddenly.Therefore, circuit-breaker is connected, and is perhaps overheated and cause catching fire by power line.That is, security incident may appear.Because, so the fail safe of system and reliability decrease offhand to the fault of microcomputer.
Summary of the invention
Technical problem
The purpose of this invention is to provide a kind of current-limiting apparatus that is used for limiting safely the allowable current that is input to electrical equipment.
Another object of the present invention provides a kind of current-limiting apparatus that is used for limiting according to power standard allowable current when micom malfunction.
Technical scheme
In order to realize according to these purposes that the invention is intended to and other advantage, as the general description also of institute's embodiment here, provide a kind of current-limiting apparatus, comprising: at least two loads; At least two load drive unit are connected to load so that control is applied to load with power supply; Detect the power supply detecting unit of power supply type; Microcomputer is controlled described load drive unit according to the power supply type that is detected by described power supply detecting unit, drives load so that use in feasible value with the electric current of interior inflow load; And at least one current limliting unit, be connected at least one control circuit that connects microcomputer and load drive unit, and the signal of the power supply type that detects by control signal and power supply detecting unit with microcomputer is connected to the electric current of the load drive unit of control circuit as input signal restriction when the micom malfunction.
According to another object of the present invention, a kind of current-limiting apparatus is provided, comprising: at least two loads; Load drive unit is connected respectively to load to drive each load; The power supply detecting unit is connected respectively to the different band electric line of input power supply, so that detect power supply type according to the potential difference between the circuit; Microcomputer comes the control load driver element and drives described load so that allowable current is no more than standard value according to the power supply type that is detected by the power supply detecting unit; And the current limliting unit, by receiving the control signal of the load drive unit of exporting by the power supply type and the slave microcomputer of the detection of power supply detecting unit, a part of load is limited so that allowable current is no more than standard value.
According to another object of the present invention, a kind of current-limiting apparatus is provided, comprising: at least two loads; Load drive unit is connected respectively to load to drive each load; The first power supply detecting unit is connected to every circuit in first combination of alive circuit with a pair of input voltage with the potential difference between the detection line; The second source detecting unit is connected to every circuit in second combination of alive circuit with a pair of input voltage with the potential difference between the detection line, and according to the testing result of the first and second power supply sensing cells power supply type is detected; Microcomputer comes the control load driver element and drives load to make allowable current be no more than standard value according to the power supply type that is detected by the second source detecting unit; And the current limliting unit, the control signal of the load drive unit by receiving the power supply type that detects from the second source detecting unit and slave microcomputer output limits so that allowable current is no more than standard value a part of load.
Advantageous effects
According to the present invention, current-limiting apparatus according to power standard restriction allowable current and when the micom malfunction restriction part operate.Therefore, owing to reduced the cause of catching fire, can improve the fail safe and the reliability of electrical equipment.
Description of drawings
In order to provide, accompanying drawing is comprised and be incorporated among the application and constituted the application's a part that drawing and description are used for embodiments of the present invention are described so that explain principle of the present invention together to further understanding of the present invention.In the accompanying drawings:
Fig. 1 is the circuit diagram of current-limiting apparatus according to an embodiment of the invention; And
Fig. 2 is the circuit diagram of current-limiting apparatus according to another embodiment of the invention.
Embodiment
Below will describe the example of these preferred embodiments shown in the drawings to the preferred embodiments of the present invention in detail.
Fig. 1 is the circuit diagram of current-limiting apparatus according to an embodiment of the invention.
With reference to Fig. 1, the current-limiting apparatus of electrical equipment comprises: at least two heaters 1,2 and 3; At least two relay R Y1, RY2 and RY3 are connected respectively to heater so that in heater 1,2 and 3 each is operated; Sensing cell 31 is connected to the alive circuit L1 of power line 1 and L2 so that according to the potential difference sensing power supply type of circuit; Microcomputer 40, control relay RY1, RY2 and RY3 be so that according to the power supply type that detects by power supply detecting unit 30, operate heater selectively in the standard value of allowable current; And current limliting unit 70, by receiving power supply type and relay R Y1, the RY2 of slave microcomputer 40 outputs and the control signal of RY3 that detects by power supply detecting unit 30, in the standard value of allowable current with a part of heater of interior restriction.
Power supply detecting unit 30 comprises photoelectrical coupler PC1, and photoelectrical coupler PC1 has alive circuit L1 in the power line of terminal box of being connected to 2 and the input of L2, and photoelectrical coupler PC1 is according to the potential difference disconnection/connection between the circuit.Photoelectrical coupler PC1 comprises the output of the input port P0 that is connected to microcomputer 40, and the voltage between alive circuit L1 and L2 comes output low level signal and the voltage between alive circuit L1 and L2 not to export high level signal by detecting two-phase power supply simultaneously by detecting single phase poaer supply when having same potential.
Microcomputer 40 is determined power supply type according to the signal of photoelectrical coupler PC1.Signal is by input port P0 input.More particularly, under single-phase situation, heater moves under to the hard-core situation of total output; Under the situation of two-phase, heater is restricted to the standard value that is no more than allowable current.Under the situation of two-phase, have only two-phase to be used in the three phase mains.
Microcomputer 40 is determined the operation of heater according to external drive condition and power supply type, then to relay R Y1, RY2 and RY3 output high level signal or low level signal.The relay that receives from the high level signal of microcomputer 40 brings into operation corresponding heater, disconnects and the operation of corresponding heater is stopped and receiving relay from the low level signal of microcomputer 40.
Externally drive condition makes under the situation of institute's having heaters operation, and microcomputer 40 is to relay R Y1, RY2 and RY3 output high level signal.But the power supply type that is detected when power supply sensing cell 30 is two phase times, no matter the external drive condition how, microcomputer 40 to the relay output low level signal of correspondence to limit a part of heater.Yet, be two-phase although microcomputer 40 needs restriction heater and power supply,, the fault of microcomputer 40 may cause heater unrestricted.
Below driven current-limiting apparatus in these cases is described in more detail.
Current limliting unit 70 is connected to the input of relay R Y1, RY2 and RY3, the output signal by considering power supply detecting unit 70 simultaneously and the relay drive signal of microcomputer 40 are so that prepare a part of heater of restriction under the situation of microcomputer 40 faults.With reference to Fig. 2, current limliting unit 70 is connected to the 3rd relay R Y3, but the invention is not restricted to this.Yet when the relay that is connected to current limliting unit 70 was turn-offed by current limliting unit 70, this relay need be maintained at below the allowable current value.
When current limliting unit 70 is connected to the input of the 3rd relay R Y 3, in the connection status of the first transistor Q1, base stage is connected to output port P1, the P2 of the microcomputer 40 that is used for relay R Y1, RY2 and RY3 and of P3, and collector electrode is connected to the output port P3 that is connected with relay R Y3.
In the connection status of transistor seconds Q2, base stage is connected to the output of power supply detecting unit 30, and collector electrode is connected to the emitter of the first transistor Q1, and emitter is connected to earth terminal.
In the connection status of the 3rd transistor Q3, base stage is received collector electrode and the earth terminal of the first transistor Q1 altogether, and emitter is connected to earth terminal, and collector electrode is connected to the output of relay R Y3.
In this case, first, second is the npn transistor npn npn with the 3rd transistor Q1, Q2 and Q3.The first transistor Q1 and transistor seconds Q2 comprise emitter terminal and the base terminal that connects altogether respectively.
Structure according to current limliting unit 70, the first transistor Q1 comprises that transistor seconds Q2 comprises the output signal a as the power supply detecting unit 30 of base input signal as the relay drive signal of the output port P1 output of the slave microcomputer 40 of base input signal b.
In these connection status, when in the base input signal of the first transistor Q1 and transistor seconds Q2 at least one was low level signal, the circuit that is connected to the first transistor Q1 and transistor seconds Q2 disconnected.Therefore, by the 3rd transistor Q3, the drive signal c that outputs to the microcomputer 40 among the relay R T3 is provided as the input signal of relay R Y3.
This means from power supply detecting unit 30 to detect single phase poaer supply that perhaps, microcomputer 40 is not operated a heater.Therefore, current limliting unit 70 does not need output port P3 relay drive signal c output, that be used for heater of slave microcomputer 40 is limited.
On the other hand, when the base input signal of the first transistor Q1 and transistor seconds Q2 is high level signal, their conductings simultaneously are to be formed into the closed circuit of earth terminal, and therefore, the drive signal c that is used for the microcomputer 40 of relay R Y3 flows into earth terminal and disappearance.
In addition, when detecting two-phase power supply in power supply detecting unit 30,40 pairs of a part of heaters of microcomputer limit.But, when from output port P1 output high level signal and simultaneously when being connected to the output port P3 output high level signal of current limliting unit 70, the first transistor Q1 and transistor seconds Q2 conducting simultaneously, thus will switch to earth terminal from the high level signal of output port P3 output.When detecting two-phase power supply and simultaneously when two output port P1 by microcomputer 40 and P3 output high level signal, expression microcomputer 40 faults.Therefore, the signal c that is connected to the output port P3 of current limliting unit 70 is forced closed.
Therefore, when driving institute's having heaters under the situation at two-phase power supply, total output surpasses allowable current.Therefore mainly limit the operation of heaters by microcomputer 40.When microcomputer 40 faults cause driving institute's having heaters, directly limit a part of heater by utilizing current limliting unit 70, can improve the reliability of current limliting.
When the base stage of the first transistor Q1 is connected to output port P2, also be appreciated that the connection status of current limliting unit 70.
In addition, when being formed, the 4th transistor Q4 connects with the first transistor Q1 and transistor seconds Q2 and when comprising the output port P2 that is connected to base terminal, the 4th transistor Q4 will move with the same manner.But,, therefore also can form the 4th transistor Q4 again, and under the situation that does not have the 4th transistor Q4, also not have operating mistake because current limliting unit 70 is only handled the situation of microcomputer 40 faults that seldom occur.
When the current-limiting apparatus of electrical equipment provides the current-limiting circuit that allowable current is limited according to power standard, even increased the device that microcomputer 40 breaks down and still forces the operation to heater to limit in addition.Therefore, can improve security of products and reliability.
The foregoing description shows single-phase and situation two-phase power supply, but the foregoing description can not be applied to be actually the product of three phase mains.Below will the current-limiting apparatus of the product that can be applied to three phase mains be described.But,, therefore for the sake of simplicity, only different parts is described, and the parts that are not described in detail are identical with the parts of the foregoing description because the thinking of the thinking of processing three phase mains and the foregoing description is roughly the same.
Fig. 2 is the circuit diagram according to the current-limiting apparatus of an alternative embodiment of the invention.
With reference to Fig. 2, in order to detect three phase mains exactly, the power supply detecting unit comprises: first detecting unit 30 is connected to the first alive circuit L1 and the second alive circuit L2 that import power supply, and the potential difference between the circuit is detected; And second source detecting unit 50, be connected to input first alive circuit L1 of power supply and the 3rd alive circuit L3 and the potential difference between the circuit is detected.In addition, the second source detecting unit detects power supply type according to the testing result of the first power supply detecting unit and second source detecting unit.
Here, the first power supply detecting unit 30 comprises photoelectrical coupler PC1, and photoelectrical coupler PC1 has the input of alive circuit L1 in the power line of terminal box of being connected to 2 and L2 and according to the potential difference disconnection/connection between the circuit.Second source detecting unit 50 comprises photoelectrical coupler PC2 and transistor Q0, and photoelectrical coupler PC2 has alive circuit L1 in the power line of terminal box of being connected to 2 and the input of L3, and according to the potential difference disconnection/connection between the circuit.Transistor Q0 comprises the base stage of the output that is connected to the first photoelectrical coupler PC1 in the first power supply detecting unit 30, the collector electrode that is connected to the emitter of earth terminal and is connected to the output of the second photoelectrical coupler PC2.
In this case, the second photoelectrical coupler PC2 has the output of the input port P0 that is connected to microcomputer 40.
According to such structure, output low level signal when the voltage of the first photoelectrical coupler PC1 between the first alive circuit L1 and the second alive circuit L2 has same potential, and the time output high level signal that has different potentials of the voltage between the first alive circuit L1 and the second alive circuit L2.
In this case, the output signal of the first photoelectrical coupler PC is applied to the base input signal of transistor Q0.Npn transistor npn npn Q0 turn-offs when applying low level signal and conducting when applying high level signal.
More particularly, when the input power supply is three phase mains, export high level signal, thereby make the transistor turns of second source detecting unit 40 from the first photoelectrical coupler PC1 and the second photoelectrical coupler PC2.Therefore, low level signal is output to the input port P0 of microcomputer 40.Under the situation of single phase poaer supply,, make second source detecting unit 50 to microcomputer 40 output low level signals from the first photoelectrical coupler PC1 and the second photoelectrical coupler PC2 output low level signal.In addition, when the input power supply is the two-phase power supply of the two-phase in the use three-phase (supposing that the first alive circuit L1 and the second alive circuit L2 are by short circuit), from the first photoelectrical coupler PC1 output low level signal and from photoelectrical coupler PC2 output high level signal.In this case, the transistor Q0 conducting of second source detecting unit 40, thus the high level signal of the second photoelectrical coupler PC2 is outputed to microcomputer 40.
In addition, when receiving low level signal by input port P0, microcomputer 40 is defined as single-phase this low level signal or three phase mains, and when receiving high level signal by input port P0, microcomputer 40 is defined as two-phase power supply with this high level signal.
Microcomputer 40 is determined the operation of heater then according to determining the input power supply type by the signal of input port P0 input.Under the situation of single-phase or three phase mains, not having to drive heater under the situation of total export-restriction, under the situation of two-phase power supply, in the standard value of allowable current with interior driving heater.
Next, the operation of microcomputer 40 and current limliting unit 70 is identical with previous embodiment.For the sake of simplicity, omitted detailed description.
According to present embodiment, owing to can detect three phase mains by power supply detecting unit 30 and 50, therefore, current limliting unit 70 can irrespectively move with power supply type.In addition, owing to can use all power supply types (single-phase, two-phase and three-phase), so improved the compatibility of product.
In another embodiment of the present invention, power supply detecting unit 30 and 50 is connected to two circuits to detect identical current potential.But this is an example, can consider to be directly connected to the power supply detecting unit of three phase mains with any other form of definite power supply type.
In addition, although the quantity of load in an embodiment is three,, this quantity can change.In addition, although the quantity of current limliting unit is one, the invention is not restricted to this.
Industrial usability
The invention provides a kind of current-limiting apparatus, be used for when microcomputer breaks down according to electricity Thereby the source standard limits allowable current and forces a part of load of restriction. Therefore, can improve electricity The safety and reliability of device.
Those skilled in the art obviously can recognize and can carry out in the present invention various modifications And variation. Therefore, the present invention be intended to be encompassed in claims and the scope that is equal in this Bright modifications and variations.
Claims (20)
1. current-limiting apparatus comprises:
At least two loads;
At least two load drive unit are connected to described load so that control is applied to described load with power supply;
Detect the power supply detecting unit of power supply type;
Microcomputer is controlled described load drive unit according to the power supply type that is detected by described power supply detecting unit, drives described load so that use in feasible value with the electric current of the interior described load of inflow; And
At least one current limliting unit, be connected at least one control circuit that connects described microcomputer and described load drive unit, and the signal of the power supply type that detects by control signal and described power supply detecting unit with described microcomputer is connected to the electric current of the described load drive unit of described control circuit as input signal restriction when the described micom malfunction.
2. device as claimed in claim 1, wherein, described power supply detecting unit comprises two inputs, described two inputs are connected respectively to different power lines so that current potential is compared and determines power supply type.
3. device as claimed in claim 1, wherein, the quantity of the power line of input power supply is three, and the input of described power supply detecting unit is connected respectively to two different power lines.
4. device as claimed in claim 1, wherein, described load drive unit is a relay.
5. device as claimed in claim 1, wherein, when the input power supply is single-phase or the described microcomputer of three phase times drives all loads, and when the input power supply be that the described microcomputer of two phase times does not drive all loads.
6. device as claimed in claim 1, wherein, described load is a heater.
7. device as claimed in claim 1, wherein, described current limliting unit is connected to the control signal of the described microcomputer of a plurality of transistor bypasses that is connected in series of base stage by input signal.
8. device as claimed in claim 1, wherein, described power supply detecting unit utilizes the two-phase in the three phase mains to discern two-phase power supply.
9. current-limiting apparatus comprises:
At least two loads;
Load drive unit is connected respectively to described load to drive each described load;
The power supply detecting unit is connected respectively to the different band electric line of input power supply, so that detect power supply type according to the potential difference between the circuit;
Microcomputer comes the control load driver element and drives described load so that allowable current is no more than standard value according to the power supply type that is detected by described power supply detecting unit; And
The current limliting unit is by receiving the power supply type that detected by described power supply detecting unit and from the control signal of the described load drive unit of described microcomputer output, a part of load being limited so that allowable current is no more than standard value.
10. device as claimed in claim 9, wherein, described power supply detecting unit comprises the photoelectrical coupler PC1 of on/off according to the potential difference between the described alive circuit.
11. device as claimed in claim 9, wherein, described current limliting unit is connected at least one in the described load drive unit, so that control the output of corresponding load drive unit.
12. device as claimed in claim 9, wherein, described current limliting unit comprises:
The first transistor Q1 comprises one base stage in the output port that is connected to the microcomputer that is connected with described load drive unit and is connected to another collector electrode in the output port of described microcomputer;
Transistor seconds Q2 comprises the base stage of the output that is connected to described power supply detecting unit, the collector electrode of emitter that is connected to described the first transistor Q1 and the emitter that is connected to earth terminal; And
The 3rd transistor Q3 comprises base stage that collector electrode and earth terminal with described the first transistor Q1 connect altogether, is connected to the emitter of earth terminal and is connected to the collector electrode of the input of described load drive unit.
13. device as claimed in claim 12, wherein, described first, second and the 3rd transistor are the npn transistor npn npn, and described first and second transistors comprise base terminal and the emitter terminal that connects altogether.
14. a current-limiting apparatus comprises:
At least two loads;
Load drive unit is connected respectively to described load to drive each described load;
The first power supply detecting unit is connected to every circuit in first combination of alive circuit with a pair of input voltage with the potential difference between the detection line;
The second source detecting unit is connected to every circuit in second combination of alive circuit with a pair of input voltage with the potential difference between the detection line, and detects power supply type according to the testing result of the first and second power supply sensing cells;
Microcomputer makes allowable current be no more than standard value according to being controlled described load drive unit and driven described load by the power supply type of described second source detecting unit detection; And
The current limliting unit is by receiving the power supply type that detects from described second source detecting unit and from the control signal of the described load drive unit of described microcomputer output, described load limits so that allowable current is no more than standard value to a part.
15. device as claimed in claim 14, wherein said power supply detecting unit comprise the photoelectrical coupler of on/off according to the potential difference between the circuit of described first combination.
16. device as claimed in claim 14, wherein said second source detecting unit comprises:
The second photoelectrical coupler PC2 of on/off according to the potential difference between the circuit of described second combination; And
Transistor Q0, comprise the output that is connected to the described first power supply detecting unit base stage, be connected to the emitter of earth terminal and be connected to the collector electrode of the output of the described second photoelectrical coupler PC2.
17. device as claimed in claim 14, wherein said current limliting unit is connected in the described load drive unit, so that control the output of corresponding load drive unit.
18. device as claimed in claim 14, wherein said current limliting unit comprises:
The first transistor Q1 comprises one base stage in the output port that is connected to the described microcomputer that is connected with described load drive unit and is connected to another collector electrode in the output port of described microcomputer;
Transistor seconds Q2 comprises the base stage of the output that is connected to described power supply detecting unit, the collector electrode of emitter that is connected to described the first transistor Q1 and the emitter that is connected to earth terminal; And
The 3rd transistor Q3 comprises base stage that collector electrode and earth terminal with described the first transistor Q1 connect altogether, is connected to the emitter of earth terminal and is connected to the collector electrode of the input of described load drive unit.
19. device as claimed in claim 18, wherein, described first, second and the 3rd transistor are the npn transistor npn npn, and described first and second transistors comprise base terminal and the emitter terminal that connects altogether.
20. device as claimed in claim 14, wherein, described second source detecting unit according to three-phase and single-phase in one or come output signal output according to two-phase.
Applications Claiming Priority (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2005-0111802 | 2005-11-22 | ||
| KR1020050111803A KR100686027B1 (en) | 2005-11-22 | 2005-11-22 | Current limit safety circuit of electrical equipment |
| KR1020050111802A KR100686026B1 (en) | 2005-11-22 | 2005-11-22 | Current limit safety circuit of electrical equipment |
| KR1020050111802 | 2005-11-22 | ||
| KR1020050111803 | 2005-11-22 | ||
| KR10-2005-0111803 | 2005-11-22 | ||
| PCT/KR2006/004923 WO2007061219A1 (en) | 2005-11-22 | 2006-11-22 | Device for limiting current of electric appliance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101361245A true CN101361245A (en) | 2009-02-04 |
| CN101361245B CN101361245B (en) | 2011-12-07 |
Family
ID=38104404
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006800423921A Expired - Fee Related CN101361245B (en) | 2005-11-22 | 2006-11-22 | Device for limiting current of electric appliance |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR100686026B1 (en) |
| CN (1) | CN101361245B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112312592A (en) * | 2019-08-01 | 2021-02-02 | 佛山市顺德区美的电热电器制造有限公司 | Heating circuit, heating cup and vehicle-mounted heater |
| CN112363396A (en) * | 2020-11-24 | 2021-02-12 | 成都芯源系统有限公司 | Intelligent switch system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR960041918A (en) * | 1995-05-15 | 1996-12-19 | 구자홍 | Load control circuit for air conditioner and air conditioner |
| KR20000003607U (en) * | 1998-07-27 | 2000-02-25 | 윤종용 | Microwave Safety Circuit |
| JP3530449B2 (en) * | 2000-02-16 | 2004-05-24 | 三洋電機株式会社 | Inverter driven motor device |
| JP2002010472A (en) * | 2000-06-21 | 2002-01-11 | Seiko Epson Corp | Overcurrent protection circuit and electric device incorporating the same |
| CN2566513Y (en) * | 2002-07-25 | 2003-08-13 | 邯郸钢铁股份有限公司 | Comprehensive protector for AC electric machine |
| KR100504857B1 (en) * | 2002-10-17 | 2005-08-01 | 엘지전자 주식회사 | Inverter driving apparatus of multi airconditioner |
| KR20040088244A (en) * | 2003-04-09 | 2004-10-16 | 현대모비스 주식회사 | Power supply including over current preventing |
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2005
- 2005-11-22 KR KR1020050111802A patent/KR100686026B1/en not_active Expired - Fee Related
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2006
- 2006-11-22 CN CN2006800423921A patent/CN101361245B/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112312592A (en) * | 2019-08-01 | 2021-02-02 | 佛山市顺德区美的电热电器制造有限公司 | Heating circuit, heating cup and vehicle-mounted heater |
| CN112363396A (en) * | 2020-11-24 | 2021-02-12 | 成都芯源系统有限公司 | Intelligent switch system |
| CN112363396B (en) * | 2020-11-24 | 2023-02-10 | 成都芯源系统有限公司 | Intelligent switch system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101361245B (en) | 2011-12-07 |
| KR100686026B1 (en) | 2007-02-22 |
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