CN107305240A - Magnetic Sensor integrated circuit, electric machine assembly and application apparatus - Google Patents
Magnetic Sensor integrated circuit, electric machine assembly and application apparatus Download PDFInfo
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- CN107305240A CN107305240A CN201610396778.8A CN201610396778A CN107305240A CN 107305240 A CN107305240 A CN 107305240A CN 201610396778 A CN201610396778 A CN 201610396778A CN 107305240 A CN107305240 A CN 107305240A
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- Prior art keywords
- integrated circuit
- magnetic
- sensor integrated
- magnetic sensor
- signal
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
- G01R33/06—Measuring direction or magnitude of magnetic fields or magnetic flux using galvano-magnetic devices
- G01R33/07—Hall effect devices
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- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Measuring Magnetic Variables (AREA)
- Hall/Mr Elements (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
The invention discloses a kind of Magnetic Sensor integrated circuit, including：Magnetic sensing elements detection external magnetic field changes to export sensing magnetic fields signal；Sensing magnetic fields signal described in signal processor processes simultaneously exports magnetic field detection information；And current source generator, the constant current that output is not affected by temperature to the magnetic sensing elements.Under the conditions of constant current driven, the sensitivity of magnetic sensing elements is not affected by temperature substantially, temperature-compensating is carried out to hall signal so as to which the Magnetic Sensor integrated circuit of the present invention need not additionally increase temperature-compensation circuit, compensation circuit design is simple, and the space for taking integrated circuit is smaller.Invention additionally discloses the electric machine assembly using the Magnetic Sensor integrated circuit, and use the application apparatus of the electric machine assembly.
Description
Technical field
The present invention relates to IC design technical field, in particular, be related to a kind of Magnetic Sensor integrated circuit,
Current source generator, the electric machine assembly using the Magnetic Sensor integrated circuit and the application apparatus using the electric machine assembly.
Background technology
Hall sensor is wide variety of field sensing component, particularly in machine field usually using Hall sensor
Detection changes of magnetic field is commutated with controlled motor, rotating speed etc..Hall element is generally made up and in Hall element two of semi-conducting material
End applies constant voltage driving, in temperature change, and the change of sensitivity of Hall element is substantially, it is necessary to additionally increase temperature-compensating
Circuit is compensated to hall signal.However, the design of existing temperature-compensation circuit is complicated, and take the space of integrated circuit compared with
Greatly.
The content of the invention
The invention provides a kind of Magnetic Sensor integrated circuit and current source generator, to solve in the prior art due to needing
Additionally to increase temperature-compensation circuit to compensate hall signal, and the design of existing temperature-compensation circuit is complicated, takes integrated
The problem of space of circuit is larger.
To achieve the above object, the present invention provides following technical scheme：
A kind of Magnetic Sensor integrated circuit, including：
Magnetic sensing elements, detection external magnetic field changes to export sensing magnetic fields signal；
Signal processor, handles the sensing magnetic fields signal and exports magnetic field detection information；And
Current source generator, the constant current that output is not affected by temperature to the magnetic sensing elements.
It is preferred that, the current source generator includes：Voltage source, for output reference voltage；And connect with the voltage source
The thermo-compensator connect, and the voltage source exports constant current to the magnetic sensing elements through the thermo-compensator.
It is preferred that, the voltage source is bandgap voltage reference, and the bandgap voltage reference changes DC voltage simultaneously
Export the reference voltage.
It is preferred that, the current source generator also includes an at least conventional, electric-resistance in parallel with the thermo-compensator,
The voltage source at least conventional, electric-resistance output at least electric current described in.
It is preferred that, the thermo-compensator includes the positive temperature coefficient compensation resistance and negative temperature coefficient compensation electricity of series connection
Resistance.
It is preferred that, the positive temperature coefficient compensation resistance is the first doping type polysilicon resistance, the negative temperature coefficient
Compensation resistance is the second doping type polysilicon resistance.
It is preferred that, the bandgap voltage reference is bipolar junction transistor core circuit.
It is preferred that, the bipolar junction transistor core circuit includes at least two triodes.
It is preferred that, signal processor includes being used for being amplified at the signal of interference processing the sensing magnetic fields signal
Reason unit and the mould for the detection electric signal Jing Guo the signal processing unit processes to be converted to switching mode detection signal
Number converter.
It is preferred that, the signal processing unit includes the amplifier for being used to amplify the magnetic sensing signal.
It is preferred that, the amplifier is chopper amplifier.
It is preferred that, the signal processing unit includes SCF, for exporting and magnetic sensing elements through putting
The big sensing signal carries out sampling filter and eliminates deviation signal.
It is preferred that, the magnetic sensing elements are Hall element.
It is preferred that, the Magnetic Sensor integrated circuit also includes：AC-DC converter, for alternating voltage to be converted to directly
Flow voltage and provide DC voltage for the current source generator.
A kind of electric machine assembly, including the motor powered by an AC power；The two-way admittance switch connected with the motor；
And foregoing Magnetic Sensor integrated circuit, output port and the two-way admittance of the Magnetic Sensor integrated circuit are switched
Control end electrical connection.
Accordingly, present invention also offers the application apparatus for including the electric machine assembly.
Optionally, the application apparatus is pump, fan, household electrical appliance or vehicle.
Understood via above-mentioned technical scheme, compared with prior art, the magnetic in Magnetic Sensor integrated circuit of the invention
Sensing element receives constant current independent of temperature variations, under the conditions of constant current driven, magnetic sensing elements it is sensitive
Degree is not affected by temperature so as to which the Magnetic Sensor integrated circuit of the present invention need not additionally increase temperature-compensation circuit to suddenly substantially
Your signal carries out temperature-compensating, and compensation circuit design is simple, and the space for taking integrated circuit is smaller.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
The embodiment of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
The accompanying drawing of offer obtains other accompanying drawings.
Fig. 1 is the general structure schematic diagram of Magnetic Sensor integrated circuit disclosed in the embodiment of the present invention.
Fig. 2 is a kind of structural representation of current source generator disclosed in the embodiment of the present invention.
Fig. 3 is a kind of Magnetic Sensor integrated circuit structure schematic diagram disclosed in the embodiment of the present invention.
Fig. 4 be the embodiment of the present invention in AC-DC converter structural representation.
Fig. 5 is a kind of signal processor structure schematic diagram disclosed in the embodiment of the present invention.
Fig. 6 is a kind of bandgap voltage reference structural representation disclosed in the embodiment of the present invention.
Fig. 7 is a kind of electrical block diagram of electric machine assembly disclosed in the embodiment of the present invention.
Fig. 8 is the structural representation of synchronous motor disclosed in the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
It has been investigated that, Hall element is in the case where constant pressure drives, and the sensitivity of Hall element when the temperature is changed becomes
Change is larger, causes the distortion of hall signal serious.And in the case where constant current drives, even if when the temperature is changed, Hall element
Change of sensitivity it is unobvious, i.e. the sensitivity of Hall element is not varied with temperature and changed substantially.
The current source generator that the present invention is provided, applied to Magnetic Sensor integrated circuit, for being provided for magnetic sensing module
Electric current, specifically, referring to accompanying drawing 1, Fig. 1 is the general structure of Magnetic Sensor integrated circuit 400 disclosed in the embodiment of the present invention
Schematic diagram.The Magnetic Sensor integrated circuit 400 is connected with AC power and output control signals to according to external magnetic field polarity
Two-way controllable AC switch.The Magnetic Sensor integrated circuit 400 includes AC-DC converter, current source generator, magnetic strength and surveys mould
Block and clock module.The AC-DC converter is used to alternating voltage being converted to low-voltage dc voltage and surveys mould for the magnetic strength
Block is powered with clock module.The current source generator exports multiple electric currents according to the low-voltage dc voltage.The magnetic strength is surveyed
Module is used to detect external magnetic field change and according to changes of magnetic field output control signal.The clock module is the sensing module
Clock signal is provided.
Accompanying drawing 2 is referred to, Fig. 2 is a kind of structural representation of current source generator disclosed in the embodiment of the present invention.Such as Fig. 2
It is shown, the invention discloses a kind of current source generator 201, including：Bandgap voltage reference 202, for output reference voltage；
At least conventional, electric-resistance 203 being connected with bandgap voltage reference 202, the bandgap voltage reference 202 is at least one described in
Conventional, electric-resistance 203 exports at least electric current I1, I2, I3 etc..The thermo-compensator 204 being connected with bandgap voltage reference 202,
The bandgap voltage reference 202 exports constant current I-Hall through the thermo-compensator 204.
Wherein, thermo-compensator includes the positive temperature coefficient compensation resistance being serially connected and negative temperature coefficient compensation electricity
Resistance.By setting, positive temperature coefficient compensates the resistance of resistance and negative temperature coefficient compensates the resistance elimination temperature change of resistance to electricity
The influence of resistance, i.e., the resistance of the thermo-compensator is not with temperature when the temperature change of the Magnetic Sensor integrated circuit
Change and change.The positive temperature coefficient compensation resistance is the first doping type polysilicon resistance, negative temperature coefficient compensation resistance
For the second doping type polysilicon resistance.In the present embodiment, the second doping type polysilicon resistance is N+ type polycrystalline
Silicon resistor, the second doping type polysilicon resistance is P+ type polysilicon resistance.
Wherein, bandgap voltage reference includes bipolar junction transistor core circuit, bipolar junction transistor core circuit
Including at least two triodes, wherein, the area of a transistor emitter is at least 2 times of another transistor emitter area.
The invention discloses a kind of current source generator, it includes the temperature-compensating electricity being connected with bandgap voltage reference
Resistance, the bandgap voltage reference exports constant current through the thermo-compensator.The present invention is by bandgap voltage reference
A source-series thermo-compensator, so as to export the constant current not being affected by temperature to magnetic strength by the thermo-compensator
Element is surveyed, and under the conditions of constant current driven, the sensitivity of magnetic sensing elements is not affected by temperature substantially.
The current source generator that the present embodiment is provided, in normal work, bandgap voltage reference is by setting bipolar junction
Transistor npn npn core circuit provides stable, high-precision 1.25V reference voltage for system, and is provided surely for other circuit modules
Fixed biased reference electric current.
Accompanying drawing 3 is referred to, Fig. 3 is a kind of structural representation of Magnetic Sensor integrated circuit 400 disclosed in the embodiment of the present invention.
The present invention also discloses a kind of Magnetic Sensor integrated circuit on the basis of a kind of current source generator disclosed above, described
Magnetic Sensor integrated circuit 400 is used to sense changes of magnetic field and output control signal, including the current source that above-described embodiment is provided
Generator 301, the Magnetic Sensor integrated circuit also includes：Magnetic sensing elements 302 and signal processor 303.
The magnetic sensing elements 302 are used to detect external magnetic field and accordingly export sensing magnetic fields signal；The signal transacting
Device 303 is used to handle sensing magnetic fields signal and output control signal；The current source generator 201 includes bandgap voltage reference
202nd, at least a resistance 203 and thermo-compensator 204, are surveyed for receiving a DC voltage and exporting constant current to magnetic strength
Element 302, and output current to signal processor 303.The magnetic sensing elements 302 are exported by the current source generator 201
Constant current I-Hall driving.
The present invention in bandgap voltage reference by connecting a thermo-compensator so as to export the perseverance not being affected by temperature
Electric current is determined to the magnetic sensing elements, and under the conditions of constant current driven, the sensitivity of magnetic sensing elements is not substantially by temperature
Influence, it is not necessary to which extra increase temperature-compensation circuit carries out temperature-compensating to hall signal, compensation circuit design is simple, takes collection
Space into circuit is smaller.
Wherein, magnetic sensing elements are Hall element.It is preferred that, as shown in figure 3, above-mentioned Magnetic Sensor integrated circuit is also wrapped
Include：The AC-DC converter 307 being connected respectively with signal processor 303 and current source generator 301.The AC-DC converter with
Mains system, which is connected to be converted to low-voltage dc voltage and provide reference voltage for the bandgap voltage reference alternating voltage, to be handed over
Powered for the signal processor 303.
Specifically, the voltage of AC-DC converter output described above is direct current 3~18V voltages.Specifically, referring to attached
Fig. 4, Fig. 4 be the embodiment of the present invention in AC-DC converter in rectifier circuit structural representation.
High AC voltage is converted into low-pressure direct by the civil power of input by rectifier circuit and low pressure difference linear voltage regulator
Voltage (being preferably 3~18V) is flowed, as shown in figure 4, the rectifier circuit is included respectively through the first diode and the two or two pole
Pipe is reversely connected to the 3rd diode and the 4th diode between VAC+ and VCA-, one voltage-regulator diode of setting between it,
Realize pressure stabilization function simultaneously.
Referring to Fig. 5, Fig. 5 is a kind of signal processor structure schematic diagram disclosed in the embodiment of the present invention.The signal
Processor 303 includes amplifier 315, SCF 317 and analog-digital converter 319.The amplifier 315 is used to amplify
The amplifier 315 of the magnetic sensing signal.Compared because magnetic sensing elements 302 and amplifier 315 device reasons itself can be produced
In the deviation signal that magnetic sensing signal is larger.The SCF 317 is used to the magnetic sensing elements are exported and passed through
The sensing signal that the amplifier 315 amplifies carries out sampling filter to eliminate deviation signal.The analog-digital converter 319 will be described
The filtering signal that SCF 317 is exported is converted to switching mode control signal.In the present embodiment, the amplifier
315 be chopper amplifier.The analog-digital converter 319 includes hysteresis comparator and latch.
Accompanying drawing 6 is referred to, Fig. 6 is the structural circuit figure for the bandgap voltage reference mentioned in the embodiment of the present invention.Band gap
Reference voltage source 202 includes start-up circuit 205, discharge circuit 206 and band gap core circuit 207, the start-up circuit 2205
Output offset side is connected to discharge circuit 206 and band gap core circuit 207, and start-up circuit 205 provides stable voltage bias point
The discharge circuit 206 and band gap core circuit 207 that subsequently connect is set to be operated in suitable quiescent point to start whole band
Gap reference voltage source circuit.The bandgap voltage reference 201 passes through output end output reference voltage Vref.The band gap core
Circuit is bipolar junction transistor circuit, including at least two triodes, wherein, the area of a transistor emitter is another three
At least 2 times of pole pipe emitter area.The reference voltage Vref at least resistance 203 described in exports an at least electric current, such as
I1, I2 and I3 etc.；Simultaneously constant current I_Hall is exported through the thermo-compensator 204.
Referring to Fig. 7, Fig. 7 is a kind of electrical block diagram of electric machine assembly disclosed in the embodiment of the present invention.The present invention
Embodiment additionally provides a kind of electric machine assembly, and the electric machine assembly includes：The motor 200 powered by an AC power 100；With institute
State the two-way admittance switch 300 of the series connection of motor 200；And the Magnetic Sensor collection provided according to any of the above-described embodiment of the invention
Into circuit 400, the control end that the output port of the Magnetic Sensor integrated circuit 400 switchs 300 with the two-way admittance is electrically connected
Connect.It is preferred that, the electric machine assembly also includes reduction voltage circuit 500, described for being supplied to after the AC power 100 is depressured
Magnetic Sensor integrated circuit 400.Magnetic Sensor integrated circuit 400 is installed to perceive the magnetic field of rotor close to the rotor of motor 200
Change.
On the basis of above-described embodiment, in one particular embodiment of the present invention, the motor is synchronous motor, such as
Shown in Fig. 8, the synchronous motor include stator and can relative stator rotation rotor 11.Stator has stator core 12 and winding
In the stator winding 16 in stator core 12.Stator core 12 can be by soft magnetic materials such as pure iron, cast iron, cast steel, electrical sheet, silicon steel
It is made.Rotor 11 has permanent magnet, when stator winding 16 is connected with AC power rotor 11 enclosed in steady-state process with 60f/p/point
The rotating speed constant-speed operation of clock, wherein f is the frequency of the AC power, and p is the number of pole-pairs of rotor.In the present embodiment, stator iron
The heart 12 has two relative pole portions 14.Each pole portion has polar arc face 15, and the outer surface of rotor 11 is relative with polar arc face 15, both
Between form substantially uniform air gap.Substantially homogeneous air gap alleged by the application, refers to largely form equal between stator and rotor
Even air gap, only fewer parts are non-homogeneous air gap.It is preferred that, the starting groove 17 of indent is set on the polar arc face 15 in stator poles portion,
Part on polar arc face 15 in addition to groove 17 is started is then concentric with rotor.Above-mentioned configuration can form non-uniform magnetic field, it is ensured that rotor
Its pole axis S1 tilts an angle relative to the central shaft S2 in stator poles portion when static, it is allowed to effect of the motor in integrated circuit
Rotor can have starting torque during lower energization every time.The pole axis S1 of wherein rotor refers between the different magnetic pole of two polarity of rotor
Line of demarcation, the central shaft S2 in stator poles portion 14 refers to the line by two centers of Ji Bu 14 of stator.In the present embodiment, stator and
Rotor is respectively provided with two magnetic poles.It should be understood that in more embodiments, the number of magnetic poles of stator and rotor can also be unequal,
And with more magnetic poles, such as four, six.
Accordingly, the embodiment of the present application additionally provides a kind of application apparatus, including the motor powered by an AC power；With
The two-way admittance switch of the motor series connection；And the Magnetic Sensor integrated circuit that above-mentioned any one embodiment is provided, the magnetic
The control end that the output port of sensor IC is switched with the two-way admittance is electrically connected.Optionally, the application apparatus
Can in the application apparatus such as pump, fan, household electrical appliance, vehicle, the household electrical appliance for example can be washing machine, dish-washing machine,
Smoke exhaust ventilator, exhaust fan etc..
The present embodiment is in normal work, and bandgap voltage reference module provides stable, high-precision 1.25V's for system
Reference voltage, by the bandgap voltage reference one thermo-compensator of series connection, so as to export the perseverance not being affected by temperature
Electric current is determined to the magnetic sensing elements, and under the conditions of constant current driven, the sensitivity of magnetic sensing elements is not substantially by temperature
Influence, it is not necessary to which extra increase temperature-compensation circuit carries out temperature-compensating to hall signal, so as to reduce the face of integrated circuit
Product.
In summary, Magnetic Sensor integrated circuit of the invention in the bandgap voltage reference one temperature of series connection by mending
Resistance is repaid, so that the constant current not being affected by temperature is exported to the magnetic sensing elements, and under the conditions of constant current driven,
The sensitivity of magnetic sensing elements is not affected by temperature substantially, in addition, the invention also discloses a kind of Magnetic Sensor integrated circuit, no
Need additionally to increase temperature-compensation circuit to hall signal progress temperature-compensating, compensation circuit design is simple, takes integrated circuit
Space it is smaller.
It should be noted that each embodiment in this specification is described by the way of progressive, each embodiment weight
Point explanation be all between difference with other embodiment, each embodiment identical similar part mutually referring to.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or using the present invention.
A variety of modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, it is of the invention
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The most wide scope caused.
Claims (17)
1. a kind of Magnetic Sensor integrated circuit, it is characterised in that including：
Magnetic sensing elements, detection external magnetic field changes to export sensing magnetic fields signal；
Signal processor, handles the sensing magnetic fields signal and exports magnetic field detection information；And
Current source generator, the constant current that output is not affected by temperature to the magnetic sensing elements.
2. Magnetic Sensor integrated circuit according to claim 1, it is characterised in that the current source generator includes：Electricity
Potential source, for output reference voltage；And the thermo-compensator being connected with the voltage source, and the voltage source is through the temperature
Compensate resistance and export constant current to the magnetic sensing elements.
3. Magnetic Sensor integrated circuit according to claim 2, it is characterised in that the voltage source is bandgap voltage reference
DC voltage is changed and exports the reference voltage by source, the bandgap voltage reference.
4. Magnetic Sensor integrated circuit according to claim 2, it is characterised in that the current source generator is also included extremely
A few conventional, electric-resistance, the voltage source at least conventional, electric-resistance output at least electric current described in.
5. Magnetic Sensor integrated circuit according to claim 2, it is characterised in that the thermo-compensator includes series connection
Positive temperature coefficient compensation resistance and negative temperature coefficient compensation resistance.
6. Magnetic Sensor integrated circuit according to claim 5, it is characterised in that the positive temperature coefficient compensates resistance and is
First doping type polysilicon resistance, the negative temperature coefficient compensation resistance is the second doping type polysilicon resistance.
7. Magnetic Sensor integrated circuit according to claim 3, it is characterised in that the bandgap voltage reference is bipolar
Junction transistor core circuit.
8. Magnetic Sensor integrated circuit according to claim 7, it is characterised in that the bipolar junction transistor core electricity
Road includes at least two triodes.
9. Magnetic Sensor integrated circuit according to claim 1, it is characterised in that signal processor includes being used for described
Sensing magnetic fields signal is amplified the signal processing unit of interference processing and for that will pass through at the signal processing unit
The detection signal of reason is converted to the analog-digital converter that switching mode detects signal.
10. Magnetic Sensor integrated circuit according to claim 9, it is characterised in that the signal processing unit includes using
In the amplifier for amplifying the magnetic sensing signal.
11. Magnetic Sensor integrated circuit according to claim 10, it is characterised in that the amplifier is chopper amplification
Device.
12. Magnetic Sensor integrated circuit according to claim 9, it is characterised in that the signal processing unit includes opening
Capacitive filter is closed, for magnetic sensing elements output and amplified sensing signal progress sampling filter elimination deviation letter
Number.
13. Magnetic Sensor integrated circuit according to claim 1, it is characterised in that the magnetic sensing elements are Hall member
Part.
14. Magnetic Sensor integrated circuit according to claim 1, it is characterised in that the Magnetic Sensor integrated circuit is also
Including：
AC-DC converter, for alternating voltage to be converted into DC voltage and DC voltage is provided for the current source generator.
15. a kind of electric machine assembly, including the Magnetic Sensor integrated circuit as described at least one of claim 1-14.
16. a kind of application apparatus with electric machine assembly as claimed in claim 15.
17. application apparatus according to claim 16, it is characterised in that the application apparatus is pump, fan, household electrical appliance
Or vehicle.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US15/491,254 US10305400B2 (en) | 2016-04-20 | 2017-04-19 | Magnetic sensor integrated circuit, motor assembly and application device |
| DE102017108258.1A DE102017108258A1 (en) | 2016-04-20 | 2017-04-19 | Magnetic sensor integrated circuit, motor assembly and utility device |
| JP2017083312A JP2017211372A (en) | 2016-04-20 | 2017-04-20 | Magnetic sensor integrated circuit, motor assembly and application device |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610248168 | 2016-04-20 | ||
| CN2016102481683 | 2016-04-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107305240A true CN107305240A (en) | 2017-10-31 |
Family
ID=60150501
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610396778.8A Pending CN107305240A (en) | 2016-04-20 | 2016-06-03 | Magnetic Sensor integrated circuit, electric machine assembly and application apparatus |
| CN201720414434.5U Expired - Fee Related CN207067370U (en) | 2016-04-20 | 2017-04-19 | Magnetic Sensor integrated circuit, electric machine assembly and application apparatus |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720414434.5U Expired - Fee Related CN207067370U (en) | 2016-04-20 | 2017-04-19 | Magnetic Sensor integrated circuit, electric machine assembly and application apparatus |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2017211372A (en) |
| CN (2) | CN107305240A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023216578A1 (en) * | 2022-05-12 | 2023-11-16 | 江苏多维科技有限公司 | Magnetic switch having filtering function |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110953267B (en) * | 2019-10-31 | 2021-02-26 | 珠海格力电器股份有限公司 | Electromagnetic brake with stable electromagnetic force and motor |
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| US4135120A (en) * | 1977-01-19 | 1979-01-16 | Sony Corporation | Drive circuit for a brushless motor |
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| US20030107509A1 (en) * | 2001-12-11 | 2003-06-12 | Detlef Drossel | Signal processing unit for a pressure switch or the like |
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2016
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-
2017
- 2017-04-19 CN CN201720414434.5U patent/CN207067370U/en not_active Expired - Fee Related
- 2017-04-20 JP JP2017083312A patent/JP2017211372A/en active Pending
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| US4135120A (en) * | 1977-01-19 | 1979-01-16 | Sony Corporation | Drive circuit for a brushless motor |
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| CN1249038A (en) * | 1997-02-28 | 2000-03-29 | 旭化成电子株式会社 | Magnetic sensor |
| US20030107509A1 (en) * | 2001-12-11 | 2003-06-12 | Detlef Drossel | Signal processing unit for a pressure switch or the like |
| CN101101490A (en) * | 2006-07-03 | 2008-01-09 | 联发科技股份有限公司 | Temperature compensation device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023216578A1 (en) * | 2022-05-12 | 2023-11-16 | 江苏多维科技有限公司 | Magnetic switch having filtering function |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2017211372A (en) | 2017-11-30 |
| CN207067370U (en) | 2018-03-02 |
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