CN107701786B - Driving circuit for electromagnetic valve - Google Patents
Driving circuit for electromagnetic valve Download PDFInfo
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- CN107701786B CN107701786B CN201711156385.0A CN201711156385A CN107701786B CN 107701786 B CN107701786 B CN 107701786B CN 201711156385 A CN201711156385 A CN 201711156385A CN 107701786 B CN107701786 B CN 107701786B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0675—Electromagnet aspects, e.g. electric supply therefor
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- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- Electronic Switches (AREA)
Abstract
It include a first transistor, a second transistor, one first delay sub-circuit, one second delay sub-circuit, a third transistor and one the 4th transistor the invention discloses a kind of driving circuit for electromagnetic valve.The first transistor is controlled by a first control signal, and both ends are respectively to receive a power supply signal and be electrically connected the first end of a solenoid valve.Second transistor is controlled by a second control signal, and both ends are respectively to receive power supply signal and be electrically connected the second end of solenoid valve.The control terminal of third transistor is electrically connected the second delay sub-circuit, and both ends are electrically connected the first end of solenoid valve and to receive a reference voltage signal.The control terminal of 4th transistor is electrically connected the first delay sub-circuit, and both ends are electrically connected the second end of solenoid valve and to receive reference voltage signal.
Description
Technical field
The present invention is about a kind of driving circuit for electromagnetic valve, especially a kind of solenoid-driven electricity with delay sub-circuit
Road.
Background technique
Electromagnetic valve switch, which is generally divided to, twin coil and two kinds of unicoil, and the electromagnetic valve switch of this two kinds of forms all has line
Circle.Since coil is inductive load, so can above be damaged because of generated induced potential to system in application.With regard to twin coil
Electromagnetic valve switch for, generally can respectively add a diode to lead energy storage at each coil both ends and remove.And with regard to monocoil electromagnetism
For threshold switch, since the polarity at coil both ends is that meeting is different with control on or off, it is not available diode
To do the operation for removing energy.
Specifically, electromagnetic valve switch is to adjust the positive-negative polarity at coil both ends to control current direction, to change
Coil (electromagnet) acts on the magnetism of permanent magnet on the push rod of axle center, to control axle center push rod direction.But line after powered up
Circle also has induced potential other than point generated is magnetic and generates.When next operation is the control of opposite direction to be done,
Coil both ends can then have a counter electromotive force, and cause the puzzlement in control and injure system.Previous Double coil electromagnetic valve can
To handle this problem by additional element, but for single-coil electromagnetic valve, due to the induced electromotive force of coil
Polarity and be not fixed, therefore be difficult to circuit framework relatively to handle this problem.
Summary of the invention
The invention reside in providing a kind of driving circuit for electromagnetic valve, in addition to being opened for the solenoid valve of unicoil or twin coil
Except pass, it can more overcome the problems, such as that previous monocoil electromagnetic valve switch can not discharge energy storage and damage circuit system.
The invention discloses a kind of driving circuit for electromagnetic valve, this driving circuit for electromagnetic valve includes a first transistor, one the
Two-transistor, one first delay sub-circuit, one second delay sub-circuit, a third transistor and one the 4th transistor.This first
The control terminal of transistor to receive a first control signal, the first end of the first transistor to receive a power supply signal,
The second end of the first transistor is electrically connected a first end of a solenoid valve.The control terminal of the first transistor is to receive one
Second control signal, for the first end of the second transistor to receive the power supply signal, the second end of the second transistor is electrical
Connect a second end of the solenoid valve.The first delay sub-circuit is to generate one first delay letter according to the first control signal
Number.The second delay sub-circuit is to generate one first postpones signal according to the second control signal.The control of the third transistor
End processed is electrically connected the second delay sub-circuit to receive second postpones signal, and the first end of the third transistor is electrically connected
The first end of the solenoid valve, the second end of the third transistor is to receive a reference voltage signal.4th transistor
Control terminal is electrically connected the first delay sub-circuit to receive first postpones signal, and the first end of the 4th transistor electrically connects
The second end of the solenoid valve is connect, the second end of the 4th transistor is to receive the reference voltage signal.
Above is of the invention with explanation to demonstrate about the explanation of the content of present invention and the explanation of the following embodiments and the accompanying drawings
Spirit and principle, and patent application claims protection scope of the invention is provided and is further explained.
Detailed description of the invention
Fig. 1 is the circuit diagram of the driving circuit for electromagnetic valve according to shown in one embodiment of the invention.
Wherein, appended drawing reference:
1 driving circuit for electromagnetic valve
11 first delay sub-circuits
111 first Postponement modules
113 first reversed modules
13 second delay sub-circuits
131 second Postponement modules
133 second reversed modules
15 first pressure stabilizing sub-circuits
151 division modules
17 second pressure stabilizing sub-circuits
171 division modules
2 solenoid valves
N1, N2 are connected node
C1, C2 capacitor
R1~R6, RD1, RD2, RD1 ', RD2 ' resistance
S1 first control signal
S2 second control signal
The first postpones signal of SD1
The second postpones signal of SD2
T1~T12 transistor
VDD power supply signal
Specific embodiment
Describe detailed features and advantage of the invention in detail in embodiments below, content is enough to make any ability
The technical staff in domain understands technology contents of the invention and implements accordingly, and is wanted according to content disclosed in this specification, right
Protection scope and attached drawing are asked, any those skilled in the art can be readily understood upon the relevant purpose of the present invention and advantage.Below
The embodiment viewpoint that present invention be described in more detail, but it is non-anyways to limit scope of the invention.
Fig. 1 is please referred to, Fig. 1 is the circuit diagram of the driving circuit for electromagnetic valve according to depicted in one embodiment of the invention.Electromagnetism
Valve-driving circuit 1 includes a first transistor T1, a second transistor T2, one first delay delay of sub-circuit 11, one second
Circuit 13, a third transistor T3 and one the 4th transistor T4.The first transistor T1, second transistor T2, third transistor T3
It is, for example, power transistor (power metal oxide semi-conductor field effect with the 4th transistor T4
transistor,power MOSFET).In this embodiment, the first transistor T1 and second transistor T2 is p-type power crystal
Pipe, third transistor T3 and the 4th transistor T4 are N-type power transistor, and but not limited to this.
The control terminal of the first transistor T1 is controlled by a first control signal S1.This means, the control terminal of transistor T1 is direct
Ground is electrically connected the signal source for generating first control signal S1 indirectly.The first end of the first transistor T1 is to receive an electricity
Source signal VDD.The second end of the first transistor T1 is electrically connected a first end of solenoid valve 2.The power supply signal is, for example,
20 volts (volt), but not limited to this.
The control terminal of second transistor T2 is controlled by a second control signal S2, and the first end of second transistor T2 is to connect
Power supply signal VDD is received, the second end of second transistor T2 is electrically connected a second end of solenoid valve 2.
First delay sub-circuit 11 is to generate one first postpones signal according to first control signal S1.Second delay son electricity
Road 13 is to generate one first postpones signal according to second control signal S2.In this embodiment, the wave of the first postpones signal SD1
Type is similar to first control signal S1, and the wave mode of the second postpones signal SD2 is similar to second control signal S2, but the first delay letter
The timing of number SD1 is later than first control signal S1 and the timing of the second postpones signal SD2 is later than second control signal S2.
The control terminal of third transistor T3 is electrically connected the second delay sub-circuit 13 to receive the second postpones signal SD2, the
The first end of three transistor T3 is electrically connected the first end of solenoid valve, and the second end of third transistor T3 is to receive one with reference to electricity
Press signal.In this embodiment, the voltage level of the reference voltage signal is lower than the voltage level and ginseng of power supply signal VDD
Examining voltage signal is ground signalling, and but not limited to this.
The control terminal of 4th transistor T4 is electrically connected the first delay sub-circuit 11 to receive the first postpones signal SD1, the
The first end of four transistor T4 is electrically connected the second end of solenoid valve 2, and the second end of the 4th transistor T4 is to receive with reference to electricity
Press signal.
In one embodiment, in one first driving period, first control signal S1 is high-voltage level, the second control letter
Number S2 is low voltage level；In one second driving period, first control signal S1 is low voltage level, second control signal S2
For high-voltage level.First driving period is not be overlapped in time with the second driving period, and not necessarily adjacent.
For the first driving period, at this point, the first transistor T1 is connected, second transistor T2 is not turned on, third crystal
Pipe T3 is not turned on, the 4th transistor T4 conducting.When the first driving period terminates, driving circuit for electromagnetic valve 1 be possible to be forced into
Enter the second driving period as the aforementioned or enter the idle stage, carried out by stage of leaving unused be, for example, first control signal S1 and second
Controlling signal S2 is all low voltage level, and the first transistor T1, second transistor T2 and third transistor T3 are not led
It is logical.However, it is controlled by the first control signal S1 after the first postpones signal SD1, that is, delay due to the 4th transistor T4, because
At the end of the first driving period, the 4th transistor T4 still can temporarily maintain on state a period of time for this.At this point, third crystal
Body diode, solenoid valve 2, the 4th transistor T4 and the ground terminal of pipe T3 constitutes one and releases energy circuit.Solenoid valve 2 can be
In a bit of time after one driving period by release can circuit discharge energy storage.Similarly, at the end of the second driving period, by
It is controlled by the second postpones signal SD2 in third transistor T3 and still temporarily maintains on state, therefore the sheet of the 4th transistor T4
Body diode, solenoid valve 2, third transistor T3 and ground terminal constitute another release can circuit.Solenoid valve 2 can be in the second driving
It can circuit release energy storage by this another releases in a bit of time after period.
The particular circuit configurations of driving circuit for electromagnetic valve are please illustrated followed by referring to Fig.1.First delay sub-circuit
11 include the first Postponement module 111 and the first reversed module 113.First Postponement module 111 includes the 5th transistor T5, the first electricity
Hinder R1 and first capacitor C1.The control terminal of 5th transistor T5 is to receive first control signal S1.The of 5th transistor T5
One end is electrically connected one first linking node N1.The second end of 5th transistor T5 is to receive reference voltage signal.First electricity
The one end for hindering R1 is electrically connected the first linking node N1 to receive power supply signal VDD, the other end of first resistor R1.First electricity
The one end for holding C1 is electrically connected the first linking node N1.The other end of first capacitor C1 is to receive reference voltage signal.First
Reversed module 113 includes the 6th transistor T6, second resistance R2 and 3rd resistor R3.The control terminal of 6th transistor T6 is to connect
Receive the voltage level of the first linking node N1.The first end of 6th transistor T6 is electrically connected the control terminal of the 4th transistor T4.
One end of second resistance R2 is electrically connected the control terminal of the 4th transistor T4 to receive power supply signal VDD, the other end.Third electricity
The one end for hindering R3 is electrically connected the control terminal of the 4th transistor T4, and the other end is to receive reference voltage signal.
Wherein, the resistance value of first resistor R1 be associated with the capacitance of first capacitor C1 the first postpones signal SD1 relative to
The time delay of first control signal S1.The resistance value of first resistor R1 and the capacitance of first capacitor C1 are affiliated this field
Technical staff can voluntarily define according to actually required after readding this specification in detail, herein and without restriction.
Similar to the circuit structure of the first delay sub-circuit 11, the second delay sub-circuit 13 includes the second Postponement module 131
With the second reversed module 133.Second Postponement module 131 includes the 7th transistor T7 the 4th resistance R4 and the second capacitor C2.7th
The control terminal of transistor T7 is to receive second control signal S2.The first end of 7th transistor T7 is electrically connected one second linking
Node N2.The second end of 7th transistor T7 is to receive reference voltage signal.One end of 4th resistance R4 is to receive power supply
Signal VDD.The other end of 4th electricity group R4 is electrically connected the second linking node N2.One end of second capacitor C2 is electrically connected second
It is connected node N2.The other end of second capacitor C2 is to receive reference voltage signal.Second reversed module 133 includes the 8th crystal
Pipe T8, the 5th resistance R5 and the 6th resistance R6.Voltage of the control terminal of 8th transistor T8 to receive the second linking node N2
Level.The first end of 8th transistor T8 is electrically connected the control terminal of third transistor T3.One end of 5th resistance R5 is to connect
Receive power supply signal VDD.The other end of 5th resistance R5 is electrically connected the control terminal of third transistor T3.One end of 6th resistance R6
It is electrically connected the control terminal of third transistor T3.The other end of third transistor T3 is to receive reference voltage signal.
Wherein, the resistance value of the 4th resistance R4 be associated with the capacitance of the second capacitor C2 the second postpones signal SD2 relative to
The retardation of second control signal S2.The resistance value of 4th resistance R4 and the capacitance of the second capacitor C2 are those skilled in the art
It can voluntarily be defined according to actually required after readding this specification in detail, it is herein and without restriction.
As shown in Figure 1, driving circuit for electromagnetic valve 1 more may include the first pressure stabilizing sub-circuit 15 and the second pressure stabilizing sub-circuit 17.
First pressure stabilizing sub-circuit 15 includes at least the 9th transistor T9.The control terminal of 9th transistor T9 is to receive first control signal
S1.The first end of 9th transistor T9 is electrically connected the control terminal of the first transistor T1.The second end of 9th transistor T9 to
Receive reference voltage signal.Similarly, the second pressure stabilizing sub-circuit 17 includes at least 1 the tenth transistor T10.Tenth transistor T10
Control terminal to receive second control signal S2.The first end of tenth transistor T10 is electrically connected the control of the first transistor T1
End processed.The second end of tenth transistor T10 is to receive reference voltage signal.9th transistor T9 and the tenth transistor T10 can
To be the transistor for being generally used for logic control.Whereby, first control signal S1 and second control signal S2 can be more single
Pure logic control signal, without having the voltage or electric current separately modulated.
On the other hand, in this embodiment, the first pressure stabilizing sub-circuit 15 further includes 1 the 11st transistor T11.11st
The first end of transistor T11 is electrically connected the control terminal of the 9th transistor T9 and to receive first control signal S1.11st
The second end of transistor T11 is to receive reference voltage signal.The control terminal of 11st transistor T11 is electrically connected the tenth crystal
The control terminal of pipe T10.Therefore, when second control signal S2 is high-voltage level, the 11st transistor T11 conducting, the 9th is brilliant
The voltage level of the control terminal of body pipe T9 certainly can be guaranteed to low voltage level via the 11st transistor T11.
Similarly, the second pressure stabilizing sub-circuit 17 further includes 1 the tenth two-transistor T12.The first of tenth two-transistor T12
End is electrically connected the control terminal of the tenth transistor T10 and to receive second control signal S2.The second of tenth two-transistor T12
End is to receive reference voltage signal.The control terminal of tenth two-transistor T12 is electrically connected the control terminal of the 9th transistor T9.Cause
This, is when first control signal S1 is high-voltage level, the tenth two-transistor T12 conducting, the control terminal of the tenth transistor T10
Voltage level certainly can be guaranteed to low voltage level via the tenth two-transistor T12.
On the other hand, the first pressure stabilizing sub-circuit 15 more may include a division module 151.Division module 151 includes one first
Divider resistance RD1 and one second divider resistance RD2.The first end of first divider resistance RD1 is to receive power supply signal VDD.The
The second end of one divider resistance RD1 is electrically connected the control terminal of the first transistor T1.The first end of second divider resistance RD2 is electrical
Connect the control terminal of the first transistor T1.The second end of second divider resistance RD2 electrically connects the first end of the 9th transistor T9.By
By selecting the resistance value and the second divider resistance RD2 resistance value of the first divider resistance RD1, when first control signal S1 is high voltage
When level, the voltage level of the control terminal of the first transistor T1 can maintain a desired voltage level, and make the first crystalline substance
Body pipe T1 is operated in mode appropriate.On the other hand, control terminal of the voltage to the first transistor T1, electromagnetism are provided by partial pressure
Valve controling circuit 1 can not need special voltage source, to alleviate the pressure in practical operation.
Similarly, the second pressure stabilizing sub-circuit 17 more may include another division module 171.Division module 171 includes one first
Divider resistance RD1 ' and one second divider resistance RD2 '.The first end of first divider resistance RD1 ' is to receive power supply signal VDD.
The second end of first divider resistance RD1 is electrically connected the control terminal of second transistor T2.The first end electricity of second divider resistance RD2
Property connection second transistor T2 control terminal.The second end of second divider resistance RD2 electrically connects the first of the tenth transistor T10
End.
In summary, the present invention provides a kind of driving circuit for electromagnetic valve.The driving circuit for electromagnetic valve has
The first transistor, second transistor, third transistor, the 4th transistor first delay sub-circuit and the second delay sub-circuit.Its
In, the first delay sub-circuit generates the first postpones signal to postpone first control signal, and the second delay sub-circuit to
Postpone second control signal to generate the second postpones signal.The first transistor and second transistor are controlled by the first control letter
Number and second control signal.Third transistor and the 4th transistor are controlled by the first postpones signal and the second postpones signal.
Whereby, when the driving direction of solenoid valve to be changed, driving circuit for electromagnetic valve can by third transistor body diode or
Be the 4th transistor body diode offer release can path to solenoid valve.Solenoid valve can first discharge originally by energy path is released
Energy storage, then driving circuit for electromagnetic valve can be not required to emit is made by the risk driven solenoid valve that the energy storage of solenoid valve damages
It is dynamic.Moreover, driving circuit for electromagnetic valve provided by the present invention not only can be suitably used for monocoil solenoid valve, two-wire also can be suitably used for
The solenoid valve of circle quite has practicability.
Although the present invention is disclosed as above with embodiment, however, it is not to limit the invention, any art technology
Personnel, without departing from the spirit and scope of the present invention, when can be used for a variety of modifications and variations, therefore protection scope of the present invention
Subject to the view scope of which is defined in the appended claims.
Claims (4)
1. a kind of driving circuit for electromagnetic valve, which is characterized in that the driving circuit for electromagnetic valve includes:
One the first transistor, the first transistor are controlled by a first control signal, and the first end of the first transistor is to connect
A power supply signal is received, the second end of the first transistor is electrically connected a first end of a solenoid valve；
One second transistor, the second transistor are controlled by a second control signal, and the first end of the second transistor is to connect
The power supply signal is received, the second end of the second transistor is electrically connected a second end of the solenoid valve；
One first delay sub-circuit, to generate one first postpones signal according to the first control signal；
One second delay sub-circuit, to generate one second postpones signal according to the second control signal；
One third transistor, the control terminal of the third transistor are electrically connected the second delay sub-circuit to receive second delay
Signal, the first end of the third transistor are electrically connected the first end of the solenoid valve, the second end of the third transistor to
Receive a reference voltage signal；And
One the 4th transistor, the control terminal of the 4th transistor are electrically connected the first delay sub-circuit to receive first delay
Signal, the first end of the 4th transistor are electrically connected the second end of the solenoid valve, the second end of the 4th transistor to
The reference voltage signal is received,
Wherein, which includes:
One first Postponement module, comprising: one the 5th transistor, the control terminal of the 5th transistor is to receive the first control letter
Number, the first end of the 5th transistor is electrically connected one first linking node, and the second end of the 5th transistor is to receive this
Reference voltage signal；One first resistor, one end are electrically connected the first linking node to receive the power supply signal, the other end；
And a first capacitor, one end are electrically connected the first linking node, the other end is to receive the reference voltage signal；And
One first reversed module, comprising: one the 6th transistor, the control terminal of the 6th transistor is to receive the first linking section
The voltage level of point, the first end of the 6th transistor are electrically connected the control terminal of the 4th transistor；One second resistance, one end
To receive the power supply signal, the other end is electrically connected the control terminal of the 4th transistor；And a 3rd resistor, one end are electrical
The control terminal of the 4th transistor is connected, the other end is to receive the reference voltage signal；And
Wherein, which includes:
One second Postponement module, comprising: one the 7th transistor, the control terminal of the 7th transistor is to receive the second control letter
Number, the first end of the 7th transistor is electrically connected one second linking node, and the second end of the 7th transistor is to receive this
Reference voltage signal；One the 4th resistance, one end are electrically connected the second linking node to receive the power supply signal, the other end；
And one second capacitor, one end are electrically connected the second linking node, the other end is to receive the reference voltage signal；And
One second reversed module, comprising: one the 8th transistor, the control terminal of the 8th transistor is to receive the second linking section
The voltage level of point, the first end of the 8th transistor are electrically connected the control terminal of the third transistor；One the 5th resistance, one end
To receive the power supply signal, the other end is electrically connected the control terminal of the third transistor；And one the 6th resistance, one end are electrical
The control terminal of the third transistor is connected, the other end is to receive the reference voltage signal.
2. driving circuit for electromagnetic valve as described in claim 1, which is characterized in that further include:
One first pressure stabilizing sub-circuit, comprising: one the 9th transistor, the control terminal of the 9th transistor is to receive first control
Signal, the first end of the 9th transistor are electrically connected the control terminal of the first transistor, and the second end of the 9th transistor is used
To receive the reference voltage signal；And
One second pressure stabilizing sub-circuit, comprising: 1 the tenth transistor, the control terminal of the tenth transistor is to receive second control
Signal, the first end of the tenth transistor are electrically connected the control terminal of the first transistor, and the second end of the tenth transistor is used
To receive the reference voltage signal.
3. driving circuit for electromagnetic valve as claimed in claim 2, which is characterized in that the first pressure stabilizing sub-circuit further includes 1 the tenth
One transistor, the first end of the 11st transistor are electrically connected the control terminal of the 9th transistor and to receive first control
Signal processed, the second end of the 11st transistor is to receive the reference voltage signal, the control terminal electricity of the 11st transistor
Property connects the control terminal of the tenth transistor, which further includes 1 the tenth two-transistor, the 12nd crystal
The first end of pipe is electrically connected the control terminal of the tenth transistor and to receive the second control signal, the tenth two-transistor
Second end be electrically connected the control of the 9th transistor to receive the reference voltage signal, the control terminal of the tenth two-transistor
End processed.
4. driving circuit for electromagnetic valve as claimed in claim 2, which is characterized in that the first pressure stabilizing sub-circuit further includes a partial pressure
Module, the division module include one first divider resistance and one second divider resistance, the first end of first divider resistance to
The power supply signal is received, the second end of first divider resistance is electrically connected the control terminal of the first transistor, second partial pressure
The first end of resistance is electrically connected the control terminal of the first transistor, and the second end of second divider resistance electrically connects the 9th crystalline substance
The first end of body pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711156385.0A CN107701786B (en) | 2017-11-20 | 2017-11-20 | Driving circuit for electromagnetic valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711156385.0A CN107701786B (en) | 2017-11-20 | 2017-11-20 | Driving circuit for electromagnetic valve |
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| Publication Number | Publication Date |
|---|---|
| CN107701786A CN107701786A (en) | 2018-02-16 |
| CN107701786B true CN107701786B (en) | 2019-05-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711156385.0A Active CN107701786B (en) | 2017-11-20 | 2017-11-20 | Driving circuit for electromagnetic valve |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108540125A (en) * | 2018-04-23 | 2018-09-14 | 厦门芯阳科技股份有限公司 | A kind of pulse electromagnetic valve-driving circuit and valve position accumulating method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101531326A (en) * | 2008-03-12 | 2009-09-16 | 住友重机械工业株式会社 | Drive circuit of crane magnet |
| CN103727289A (en) * | 2013-12-27 | 2014-04-16 | 西安航天远征流体控制股份有限公司 | Direct-current electromagnetic valve control circuit |
| CN205551752U (en) * | 2016-03-03 | 2016-09-07 | 方荣祥 | Protective gas afterflow control system of welding machine |
| CN106373702A (en) * | 2016-10-10 | 2017-02-01 | 沈阳航空航天大学 | IGBT non-contact lifting electromagnet control system for non-rectifying transformer |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6594739B2 (en) * | 2015-11-04 | 2019-10-23 | 大電株式会社 | Electromagnetic magnet control device |
-
2017
- 2017-11-20 CN CN201711156385.0A patent/CN107701786B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101531326A (en) * | 2008-03-12 | 2009-09-16 | 住友重机械工业株式会社 | Drive circuit of crane magnet |
| CN103727289A (en) * | 2013-12-27 | 2014-04-16 | 西安航天远征流体控制股份有限公司 | Direct-current electromagnetic valve control circuit |
| CN205551752U (en) * | 2016-03-03 | 2016-09-07 | 方荣祥 | Protective gas afterflow control system of welding machine |
| CN106373702A (en) * | 2016-10-10 | 2017-02-01 | 沈阳航空航天大学 | IGBT non-contact lifting electromagnet control system for non-rectifying transformer |
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| CN107701786A (en) | 2018-02-16 |
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