CN207634782U - Drive circuit of solenoid valve and cooking utensil - Google Patents
Drive circuit of solenoid valve and cooking utensil Download PDFInfo
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- CN207634782U CN207634782U CN201721796687.XU CN201721796687U CN207634782U CN 207634782 U CN207634782 U CN 207634782U CN 201721796687 U CN201721796687 U CN 201721796687U CN 207634782 U CN207634782 U CN 207634782U
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- 238000010411 cooking Methods 0.000 title claims abstract description 23
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Abstract
The utility model discloses a drive circuit and cooking utensil of solenoid valve. Wherein, this drive circuit of solenoid valve includes: the first end of the first circuit is connected with a first voltage, and the second end of the first circuit is connected with the first end of the electromagnetic valve; a second circuit, wherein a second voltage smaller than the first voltage is connected to a first end of the second circuit, and a second end of the second circuit is connected with a first end of the electromagnetic valve; the first output end of the controller is connected with the third end of the first circuit, the second output end of the controller is connected with the third end of the second circuit, and the controller is used for controlling the first circuit to work when the control electromagnetic valve starts to work and controlling the second circuit to work when the control electromagnetic valve continues to work; wherein the second end of the solenoid valve is grounded. The utility model provides an among the prior art through the work of pulse width modulation signal control solenoid valve, damage the technical problem of solenoid valve easily.
Description
Technical field
The utility model is related to household appliance technical fields, in particular to the driving circuit and cooking pot of a kind of solenoid valve
Tool.
Background technology
Current cooking apparatus, for example, electric pressure cooking saucepan, by that pressure limiting valve can be pushed to realize automatic exhaust using solenoid valve
Decompression, in order to realize the purpose of reduction of blood pressure in high-speed, solenoid valve, which will appear, to work long hours.Solenoid valve works for a long time, itself
Calorific value is continuously increased, and the working time is longer, and calorific value is bigger, the service life of solenoid valve can be not only reduced in this way, also because of temperature
Degree is increased and is impacted to peripheral structure device.
In order to solve heating problem, the prior art (is the letter of Pulse Width Modulation using pulse-width modulation PWM
Claim) control mode drive magnetic valve, to reduce the turn-on time of solenoid valve, reduction calorific value.But PWM control have it is following not
Foot：Pwm control signal has certain frequency, is easy to generate resonance with electromagnetic valve coil frequency, causes to utter long and high-pitched sounds；Pwm control signal
Turn-on time changing, cause chip power supply voltage fluctuation, influencing the EMC of entire cooking apparatus, (Electro Magnetic Compatibility is
The abbreviation of Electromagnetic Compatibility)；Pwm control signal is unable to control battery last power supply, and is having
Because conducting dynamics is inadequate on the solenoid valve of rebound, it may spring back at work, cannot achieve the effect that drive magnetic valve, and
And it is easily damaged the elements such as solenoid valve.
For the problem that controlling electromagnetic valve work by pulse-width signal in the prior art, it is easily damaged solenoid valve, mesh
It is preceding not yet to propose effective solution scheme.
Utility model content
The utility model embodiment provides a kind of driving circuit and cooking apparatus of solenoid valve, at least to solve existing skill
The technical issues of electromagnetic valve work is controlled by pulse-width signal in art, is easily damaged solenoid valve.
According to the one side of the utility model embodiment, a kind of driving circuit of solenoid valve is provided, including：First electricity
The first end access on road, the first circuit has first voltage, the second end of the first circuit and the first end of solenoid valve to connect；Second electricity
Road, the first end access of second circuit have a second voltage less than first voltage, and the of the second end of second circuit and solenoid valve
One end connects；Controller, the first output end of controller are connect with the third end of the first circuit, the second output terminal of controller with
The third end of second circuit connects, for when controlling solenoid valve start-up operation, controlling the work of the first circuit, when control solenoid valve
When working on, control second circuit work；Wherein, the second end ground connection of solenoid valve.
In the utility model embodiment, when controlling solenoid valve start-up operation, the work of the first circuit, electromagnetism can be controlled
Valve accesses high voltage, when control solenoid valve works on, can control second circuit work, solenoid valve accesses low-voltage, real
Now started by high voltage drive solenoid valve, by low voltage drive solenoid valve continue working, starts electromagnetism to reach normal
Valve, and the operating voltage of solenoid valve is reduced, the calorific value of solenoid valve is reduced, the technique effect of solenoid valve service life is improved,
And then the technical issues of solving and electromagnetic valve work is controlled by pulse-width signal in the prior art, being easily damaged solenoid valve.
Further, the first circuit includes：First triode, the base stage of the first triode and the third end of the first circuit connect
It connects, the emitter ground connection of the first triode；Second triode, the base stage of the second triode and the collector of the first triode connect
It connecing, the emitter of the second triode is connect with the first end of the first circuit, and the of the collector of the second triode and the first circuit
Two ends connect.The conducting and shutdown of the first triode are controlled by controller, further control conducting and the pass of the second triode
Disconnected, realization is started by high voltage drive solenoid valve, achievees the effect that normally to start solenoid valve.
Further, the first circuit further includes：First resistor is connected on the of the base stage of the first triode and the first circuit
Between three ends；Second resistance is connected between the base stage of the second triode and the collector of the first triode；3rd resistor, string
It is associated between the emitter of the second triode and the collector of the first triode.First resistor and second resistance are current-limiting resistance,
Reach and avoid the input voltage of the first triode and the second triode excessive, the first triode and the second triode is caused to damage,
The effect of solenoid valve normal work is influenced, 3rd resistor is pull-up resistor, reaches and the second triode is avoided to mislead, influence electromagnetism
The effect of valve normal work.
Further, second circuit includes：Third transistor, the base stage of third transistor and the third end of second circuit connect
It connects, the emitter ground connection of third transistor；4th triode, the base stage of the 4th triode and the collector of third transistor connect
It connecing, the first end of the emitter of the 4th triode and second circuit connects, and the of the collector of the 4th triode and second circuit
Two ends connect.The conducting and shutdown of third transistor are controlled by controller, further control conducting and the pass of the 4th triode
It is disconnected, it realizes the operating voltage for further reaching by low voltage drive solenoid valve continue working and reducing solenoid valve, reduces solenoid valve
Calorific value, improve solenoid valve service life effect.
Further, second circuit further includes：4th resistance, be connected on third transistor base stage and second circuit
Between three ends；5th resistance is connected between the base stage and the collector of third transistor of the 4th triode；6th resistance, string
It is associated between the emitter and the collector of third transistor of the 4th triode.4th resistance and the 5th resistance are current-limiting resistance,
Reach and avoid the input voltage of third transistor and the 4th triode excessive, third transistor and the 4th triode is caused to be damaged,
The effect of solenoid valve normal work is influenced, the 6th resistance is pull-up resistor, reaches and the 4th triode is avoided to mislead, influence electromagnetism
The effect of valve normal work.
Further, driving circuit further includes：First diode, the second end of the anode and second circuit of the first diode
Connection, the cathode of the first diode are connect with the first end of the second end of the first circuit and solenoid valve；Second diode, the two or two
The plus earth of pole pipe, the cathode of the cathode of the second diode and the first diode, the second end of the first circuit and solenoid valve
First end connects.First diode is isolating diode, reaches and avoids the work of the first circuit and second circuit does not work, the four or three
There is backward voltage in pole pipe, the 4th triode is caused to damage, influence the effect of solenoid valve normal work, the second diode is afterflow
Diode reaches and solenoid valve is protected not to be reversed electromotive force breakdown or damage, influences the effect of solenoid valve normal work.
Further, driving circuit further includes：Interface, the second end and second circuit of the first end of interface and the first circuit
Second end connection, interface second end ground connection, interface access have solenoid valve.Solenoid valve is connect by interface with driving circuit,
Reach and replace solenoid valve at any time, improves the effect of solenoid valve using flexible.
According to the another aspect of the utility model embodiment, a kind of cooking apparatus is additionally provided, including：In above-described embodiment
Solenoid valve driving circuit.
Further, cooking apparatus is electric pressure cooking saucepan.
Description of the drawings
Attached drawing described herein is used to provide a further understanding of the present invention, and is constituted part of this application,
The exemplary embodiment of the utility model and the description thereof are used to explain the utility model, does not constitute to the improper of the utility model
It limits.In the accompanying drawings：
Fig. 1 is the schematic diagram according to a kind of driving circuit of solenoid valve of the utility model embodiment；
Fig. 2 is the schematic diagram according to a kind of first circuit of the utility model embodiment；
Fig. 3 is the schematic diagram according to a kind of second circuit of the utility model embodiment；And
Fig. 4 is the schematic diagram according to a kind of driving circuit of optional solenoid valve of the utility model embodiment.
Specific implementation mode
In order to make those skilled in the art more fully understand the utility model, below in conjunction with the utility model reality
The attached drawing in example is applied, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that described
Embodiment is only the embodiment of the utility model part, instead of all the embodiments.Based on the reality in the utility model
Example is applied, every other embodiment obtained by those of ordinary skill in the art without making creative efforts is all answered
When the range for belonging to the utility model protection.
It should be noted that term " first " in the specification and claims of the utility model and above-mentioned attached drawing,
" second " etc. is for distinguishing similar object, without being used to describe specific sequence or precedence.It should be appreciated that in this way
The data used can be interchanged in the appropriate case, so that the embodiments of the present invention described herein can be in addition at this
In illustrate or description those of other than sequence implement.In addition, term " comprising " and " having " and their any deformation, meaning
It includes to be not necessarily limited to clearly arrange for example, containing a series of system of units, product or equipment that figure, which is to cover non-exclusive,
Those of go out unit, but may include not listing clearly or for the intrinsic other units of these products or equipment.
According to the utility model embodiment, a kind of embodiment of the driving circuit of solenoid valve is provided.
Fig. 1 is according to a kind of schematic diagram of the driving circuit of solenoid valve of the utility model embodiment, as shown in Figure 1, should
The driving circuit of solenoid valve includes：Solenoid valve 10, the first circuit 20, second circuit 40 and controller 60.
Wherein, the first end access of the first circuit 20 has first voltage 30, second end and the solenoid valve 10 of the first circuit 20
First end connection；The first end access of second circuit 40 has the second voltage 50 less than first voltage 30, second circuit 40
Second end is connect with the first end of solenoid valve 10；First output end of controller 60 is connect with the third end of the first circuit 20, control
The second output terminal of device 60 processed is connect with the third end of second circuit 40, for when controlling the start-up operation of solenoid valve 10, controlling
First circuit 20 works, and when control solenoid valve 10 works on, control second circuit 40 works；Wherein, the of solenoid valve 10
Two ends are grounded.
Specifically, above-mentioned controller 60 can be with the control chip inside cooking apparatus.Solenoid valve 10 can pass through two
Circuit is powered, and two circuits access voltage of different sizes, i.e., high-voltage driving circuit (the first i.e. above-mentioned circuit 20) and
Low-voltage driving circuit (i.e. above-mentioned second circuit 40), high-voltage driving circuit access high voltage (i.e. above-mentioned first voltage 30),
Low-voltage driving circuit accesses low-voltage (i.e. above-mentioned second voltage 50), when solenoid valve 10 just starts to start, can control height
Drive circuit works are pressed, to which solenoid valve 10 is by High Voltage Power Supply, after the start-up operation of solenoid valve 10, in order to reduce solenoid valve
10 calorific value and the normal work for maintaining solenoid valve 10 can control low-voltage driving circuit work, to which solenoid valve 10 is by low
Power voltage supply.
According to the utility model above-described embodiment the first circuit 20 can be controlled when controlling the start-up operation of solenoid valve 10
Work, solenoid valve 10 access high voltage, when control solenoid valve 10 works on, can control the work of second circuit 40, electromagnetism
Valve 10 accesses low-voltage, realizes and is started by high voltage drive solenoid valve 10, by 10 continue working of low voltage drive solenoid valve,
Start solenoid valve 10 to reach normal, and reduce the operating voltage of solenoid valve 10, reduces the calorific value of solenoid valve 10, improve
The technique effect of 10 service life of solenoid valve, and then solve and solenoid valve work is controlled by pulse-width signal in the prior art
The technical issues of making, being easily damaged solenoid valve.
Optionally, Fig. 2 is according to a kind of schematic diagram of first circuit of the utility model embodiment, as shown in Fig. 2, first
Circuit 20 includes：First triode 21 and the second triode 22.
Wherein, the base stage of the first triode 21 is connect with the third end of the first circuit 20, the emitter of the first triode 21
Ground connection；The base stage of second triode 22 is connect with the collector of the first triode 21, the emitter and first of the second triode 22
The first end of circuit 20 connects, and the collector of the second triode 22 is connect with the second end of the first circuit 20.
Specifically, the first above-mentioned triode 21 is NPN type triode, and the second above-mentioned triode 22 is three pole of positive-negative-positive
Pipe.First triode 21 and the second triode 22 constitute high-voltage driving circuit, base stage and the controller 60 of the first triode 21
The connection of first output end, the emitter ground connection of the first triode 21, the collector of the first triode 21 and the second triode 22
Base stage connects, and the emitter of the second triode 22 accesses high voltage, and the collector of the second triode 22 is connect with solenoid valve 10, when
When solenoid valve 10 needs to start, the first output end input high level of controller 60, the conducting of the first triode 21, the second triode
22 base stage connects low level, the conducting of the second triode 22, and solenoid valve 10 accesses high level.The one or three pole is controlled by controller 60
The conducting and shutdown of pipe 21 further control the conducting and shutdown of the second triode 22, realize and pass through high voltage drive solenoid valve
10 start, and achieve the effect that normally to start solenoid valve 10.
Optionally, as shown in Fig. 2, the first circuit 20 further includes：First resistor 23, second resistance 24 and 3rd resistor 25.
Wherein, first resistor 23 is connected between the base stage of the first triode 21 and the third end of the first circuit 20；Second
Resistance 24 is connected between the base stage of the second triode 22 and the collector of the first triode 21；3rd resistor 25 is connected on second
Between the emitter of triode 22 and the collector of the first triode 21.
Specifically, first resistor 23 and second resistance 24 are current-limiting resistance, reach and avoid the first triode 21 and the two or three
The input voltage of pole pipe 22 is excessive, and the first triode 21 and the second triode 22 is caused to damage, and influences the normal work of solenoid valve 10
Effect, 3rd resistor 25 be pull-up resistor, reach and the second triode 22 avoided to mislead, influence solenoid valve 10 normal work
Effect.
Optionally, Fig. 3 is according to a kind of schematic diagram of second circuit of the utility model embodiment, as shown in figure 3, second
Circuit 40 includes：Third transistor 41 and the 4th triode 42.
Wherein, the base stage of third transistor 41 is connect with the third end of second circuit 40, the emitter of 41 pipe of the three or three pole
Ground connection；The base stage of 4th triode 42 is connect with the collector of third transistor 41, the emitter and second of the 4th triode 42
The first end of circuit 40 connects, and the collector of the 4th triode 42 is connect with the second end of second circuit 40.
Specifically, above-mentioned third transistor 41 is NPN type triode, and the 4th above-mentioned triode 42 is three pole of positive-negative-positive
Pipe.Third transistor 41 and the 4th triode 42 constitute low-voltage driving circuit, base stage and the controller 60 of third transistor 41
Second output terminal connection, the emitter ground connection of third transistor 41, the collector of third transistor 41 and the 4th triode 42
Base stage connects, and the emitter of the 4th triode 42 accesses low-voltage, and the collector of the 4th triode 42 is connect with solenoid valve 10, when
When solenoid valve 10 needs to start, the second output terminal input high level of controller 60, third transistor 41 is connected, the 4th triode
42 base stage connects low level, the conducting of the 4th triode 42, and solenoid valve 10 accesses low level.The three or three pole is controlled by controller 60
The conducting and shutdown of pipe 41 further control the conducting and shutdown of the 4th triode 42, realize and pass through low voltage drive solenoid valve
10 continue workings further reach the operating voltage for reducing solenoid valve 10, reduce the calorific value of solenoid valve 10, improve solenoid valve 10
The effect of service life.
Optionally, as shown in figure 3, second circuit 40 further includes：4th resistance 43, the 5th resistance 44 and the 6th resistance 45.
Wherein, the 4th resistance 43 is connected between the base stage of third transistor 41 and the third end of second circuit 40；5th
Resistance 44 is connected between the base stage and the collector of third transistor 41 of the 4th triode 42；6th resistance 45 is connected on the 4th
Between the emitter and the collector of third transistor 41 of triode 42.
Specifically, the 4th resistance 43 and the 5th resistance 44 are current-limiting resistance, reach and avoid third transistor 41 and the four or three
The input voltage of pole pipe 42 is excessive, and third transistor 41 and the 4th triode 42 is caused to be damaged, and influences the normal work of solenoid valve 10
Effect, the 6th resistance 45 be pull-up resistor, reach and the 4th triode 42 avoided to mislead, influence solenoid valve 10 normal work
Effect.
Optionally, as shown in Figure 1, driving circuit further includes：First diode 70 and the second diode 80.
Wherein, the first diode 70 anode connect with the second end of second circuit 40, the cathode of the first diode 70 and
The second end of first circuit 20 is connected with the first end of solenoid valve 10；The plus earth of second diode 80, the second diode 80
Cathode and the first diode 70 cathode, the second end of the first circuit 20 connects with the first end of solenoid valve 10.
Specifically, the first diode 70 is isolating diode, due to the collector and the second triode of the 4th triode 42
22 collector connection, the emitter of the 4th triode 42 connects low-voltage, when the second triode 22 is connected, the 4th triode 42
Collector connect high voltage, have backward voltage on the 4th triode 42, cause the 4th triode 42 damage, pass through series connection the one or two
Pole pipe 70 can be reached and the 4th triode 42 is avoided to damage, be influenced solenoid valve 10 based on the one-way conduction of the first diode 70
The effect of normal work.Second diode 80 is fly-wheel diode can be reached based on the one-way conduction of the second diode 80
It protects solenoid valve 10 not to be reversed electromotive force breakdown or damage, influences the effect of the normal work of solenoid valve 10.
Optionally, as shown in Figure 1, driving circuit further includes：Interface 90.
Wherein, the first end of interface 90 is connect with the second end of the second end of the first circuit 20 and second circuit 40, interface
90 second end ground connection, the access of interface 90 have solenoid valve 10.
Specifically, solenoid valve 10 can be connect by interface 90 with driving circuit, can be with when solenoid valve 10 breaks down
It is convenient to replace solenoid valve at any time, achieve the effect that improve solenoid valve using flexible.
Fig. 4 is tied below according to a kind of schematic diagram of the driving circuit of optional solenoid valve of the utility model embodiment
Fig. 4 is closed a kind of preferred embodiment of the utility model is described in detail.As shown in figure 4, VCC1 is solenoid valve maintenance voltage,
VCC2 is solenoid-driven voltage, wherein VCC1<VCC2；Triode Q1, Q3, resistance R1, R2, R3 constitute solenoid valve low-voltage driving
Circuit, R3 are Q3 current-limiting resistances, and it is triode Q1 current-limiting resistances to meet MCU control feet P1, R2, and R1 is pull-up resistor, prevents three poles
Pipe Q1 misleads；Triode Q2, Q4, resistance R4, R5, R6 constitute solenoid valve high-voltage driving circuit, and R6 is Q4 current-limiting resistances, is connect
It is triode Q2 current-limiting resistances that MCU, which controls foot P2, R2, and R4 is pull-up resistor, prevents triode Q2 from misleading；Diode D1 be every
From diode, when preventing Q2 conductings, Q1 from not turning on, there is backward voltage VCC2 on Q1 and be damaged；Interface CN1 connects solenoid valve；Two
Pole pipe D2 is afterflow backward dioded.When P2 is high level, Q4 is connected, and then by R5, then Q2 is connected, at this time electromagnetic valve work
Voltage is voltage VCC2, drive magnetic valve work；P2 is low level, and Q2 cut-offs, then solenoid valve does not work.When P1 be high level,
Q3 is connected, and then by R2, then Q1 is connected, and electromagnetic valve work voltage is voltage VCC1 at this time, maintains electromagnetic valve work；P1 is low
Level, Q1 cut-offs, then solenoid valve does not work.When solenoid-driven, High Voltage Power Supply is driven using VCC2, after driving, then is turned
Turn to the power supply of VCC1 maintenance voltages, so that it may to maintain working condition.Due to VCC1<VCC2, electromagnetic valve work voltage reduce, from
Body calorific value is reduced.It can effectively solve the problems, such as that solenoid valve works long hours overheat.
According to the utility model embodiment, a kind of embodiment of cooking apparatus is additionally provided, including：In above-described embodiment
The driving circuit of solenoid valve.
Optionally, cooking apparatus can be electric pressure cooking saucepan.
Specifically, above-mentioned cooking apparatus can be electric pressure cooking saucepan, electric cooker, cooking machine etc., in the upper of the utility model
It states in embodiment, is illustrated by taking electric pressure cooking saucepan as an example.
In above-described embodiment of the utility model, all emphasize particularly on different fields to the description of each embodiment, in some embodiment
The part not being described in detail may refer to the associated description of other embodiment.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
For art personnel, without departing from the principle of this utility model, several improvements and modifications can also be made, these improve and
Retouching also should be regarded as the scope of protection of the utility model.
Claims (9)
1. a kind of driving circuit of solenoid valve, which is characterized in that including：
The first end access of first circuit, first circuit has first voltage, the second end and solenoid valve of first circuit
First end connection；
The first end access of second circuit, the second circuit has the second voltage less than the first voltage, second electricity
The second end on road is connect with the first end of the solenoid valve；
Controller, the first output end of the controller are connect with the third end of first circuit, and the second of the controller
Output end is connect with the third end of the second circuit, for when controlling the solenoid valve start-up operation, controlling described first
Circuit works, and when the control solenoid valve works on, controls the second circuit work；
Wherein, the second end ground connection of the solenoid valve.
2. driving circuit according to claim 1, which is characterized in that first circuit includes：
First triode, the base stage of first triode are connect with the third end of first circuit, first triode
Emitter ground connection；
Second triode, the base stage of second triode are connect with the collector of first triode, the two or three pole
The emitter of pipe is connect with the first end of first circuit, and the of the collector of second triode and first circuit
Two ends connect.
3. driving circuit according to claim 2, which is characterized in that first circuit further includes：
First resistor is connected between the base stage of first triode and the third end of first circuit；
Second resistance is connected between the base stage of second triode and the collector of first triode；
3rd resistor is connected between the emitter of second triode and the collector of first triode.
4. driving circuit according to claim 1, which is characterized in that the second circuit includes：
Third transistor, the base stage of the third transistor are connect with the third end of the second circuit, the third transistor
Emitter ground connection；
The base stage of 4th triode, the 4th triode is connect with the collector of the third transistor, the four or three pole
The emitter of pipe is connect with the first end of the second circuit, and the of the collector of the 4th triode and the second circuit
Two ends connect.
5. driving circuit according to claim 4, which is characterized in that the second circuit further includes：
4th resistance is connected between the base stage of the third transistor and the third end of the second circuit；
5th resistance is connected between the base stage and the collector of the third transistor of the 4th triode；
6th resistance is connected between the emitter and the collector of the third transistor of the 4th triode.
6. driving circuit according to claim 1, which is characterized in that the driving circuit further includes：
The anode of first diode, first diode is connect with the second end of the second circuit, first diode
Cathode connect with the first end of the second end of first circuit and the solenoid valve；
Second diode, the plus earth of second diode, the cathode of second diode and first diode
Cathode, the second end of first circuit connects with the first end of the solenoid valve.
7. driving circuit according to claim 1, which is characterized in that the driving circuit further includes：
Interface, the first end of the interface are connect with the second end of the second end of first circuit and the second circuit, institute
The second end ground connection of interface is stated, the interface access has the solenoid valve.
8. a kind of cooking apparatus, which is characterized in that including：The driving electricity of solenoid valve described in any one of claim 1 to 7
Road.
9. cooking apparatus according to claim 8, which is characterized in that the cooking apparatus is electric pressure cooking saucepan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721796687.XU CN207634782U (en) | 2017-12-20 | 2017-12-20 | Drive circuit of solenoid valve and cooking utensil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721796687.XU CN207634782U (en) | 2017-12-20 | 2017-12-20 | Drive circuit of solenoid valve and cooking utensil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207634782U true CN207634782U (en) | 2018-07-20 |
Family
ID=62853190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721796687.XU Active CN207634782U (en) | 2017-12-20 | 2017-12-20 | Drive circuit of solenoid valve and cooking utensil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207634782U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111398852A (en) * | 2020-03-31 | 2020-07-10 | 厦门科灿信息技术有限公司 | Power output short circuit detection circuit and electronic equipment |
-
2017
- 2017-12-20 CN CN201721796687.XU patent/CN207634782U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111398852A (en) * | 2020-03-31 | 2020-07-10 | 厦门科灿信息技术有限公司 | Power output short circuit detection circuit and electronic equipment |
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