CN207460039U - The driving device and electrical equipment of direct current generator in electrical equipment - Google Patents
The driving device and electrical equipment of direct current generator in electrical equipment Download PDFInfo
- Publication number
- CN207460039U CN207460039U CN201721551305.7U CN201721551305U CN207460039U CN 207460039 U CN207460039 U CN 207460039U CN 201721551305 U CN201721551305 U CN 201721551305U CN 207460039 U CN207460039 U CN 207460039U
- Authority
- CN
- China
- Prior art keywords
- direct current
- semiconductor
- oxide
- metal
- current generator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model discloses the driving device and electrical equipment of direct current generator in a kind of electrical equipment, wherein, driving device includes：Power supply, power supply to direct current generator powering；Multiple driving switch pipes, are connected to after being serially connected between driving switch pipe and direct current generator between DC power supply terminal and ground terminal, and multiple driving switch pipes include main switch and protection switch pipe；Driving unit; including multiple driving signal output ends; each driving signal output end is correspondingly connected with the control terminal to a driving switch pipe; driving unit is by driving protection switch pipe to be in normal open state and driving being switched on or off for main switch; direct current generator to be controlled to be worked or out of service, and when main switch fails by protection switch pipe is driven to turn off so that direct current generator force it is out of service.The device can be when main switch fails by protection switch pipe being driven to turn off so that direct current generator pressure is out of service, and avoiding direct current generator, there is a situation where work always.
Description
Technical field
The utility model is related to direct current generator in technical field of electric appliances more particularly to a kind of electrical equipment driving device and
A kind of electrical equipment.
Background technology
At present, as shown in Fig. 1 a-1b, direct current motor drive circuit generally uses list MOS (Metal-Oxide-
Semiconductor, Metal-Oxide Semiconductor field-effect transistor) driving, it is driven including NMOS drivings (Fig. 1 a) or PMOS
Dynamic (Fig. 1 b), metal-oxide-semiconductor are connected to after connecting with direct current generator between DC power supply terminal VCC and ground terminal GND.Driving unit passes through control
The opening/closing of metal-oxide-semiconductor processed drives whether direct current generator runs.
But metal-oxide-semiconductor is likely to occur uncontrollable phenomenon after damage, makes metal-oxide-semiconductor there is a situation where constantly on, so as to lead
Direct current generator appearance is caused to work always situation about can not stop, influencing the security of electrical equipment work.
Utility model content
The utility model is intended to solve at least some of the technical problems in related technologies.For this purpose, this reality
With a new purpose in a kind of driving device of the direct current generator in electrical equipment is proposed, which can be in main switch
During failure by drive protection switch pipe turn off so that direct current generator force it is out of service, avoid direct current generator generation work always
Situation, can fail the risk that bring in certain degree to avoid switching tube.
Another purpose of the utility model is to propose a kind of electrical equipment.
In order to achieve the above objectives, on the one hand the utility model proposes the driving dress of direct current generator in a kind of electrical equipment
It puts, including：Power supply, the power supply include DC power supply terminal and ground terminal, and the power supply is giving the direct current
Motor is powered；Multiple driving switch pipes are connected to after being serially connected between multiple driving switch pipes and the direct current generator
Between the DC power supply terminal and the ground terminal, multiple driving switch pipes include main switch and protection switch pipe；Driving
Unit, the driving unit include multiple driving signal output ends, and each driving signal output end is correspondingly connected with to one
The control terminal of driving switch pipe, the driving unit is by driving the protection switch pipe to be in normal open state and driving the master
Switching tube is switched on or off, and the direct current generator to be controlled to be worked or out of service, and is failed in the main switch
When by the protection switch pipe is driven to turn off so that the direct current generator force it is out of service.
The driving device of direct current generator in electrical equipment according to the present utility model, driving unit is by driving protection switch
Pipe is in normal open state and main switch is driven to be switched on or off, to control the direct current generator to be worked or out of service, and
When main switch fails by drive protection switch pipe turn off so that direct current generator force it is out of service, direct current generator is avoided to send out
The risk that raw situation about working always can be brought in certain degree to avoid switching tube failure.
In addition, can also be had such as according to the driving device of direct current generator in the utility model electrical equipment set forth above
Lower additional technical feature：
Specifically, multiple driving switch pipes are the first metal-oxide-semiconductor and the second metal-oxide-semiconductor.
Further, the first end of first metal-oxide-semiconductor is connected to the DC power supply terminal, institute by the direct current generator
The second end for stating the first metal-oxide-semiconductor is connected with the first end of second metal-oxide-semiconductor, and the second end of second metal-oxide-semiconductor is connected to institute
State ground terminal, the control terminal of the control terminal of first metal-oxide-semiconductor and second metal-oxide-semiconductor is correspondingly connected with a drive signal output
End.
Further, the first end of first metal-oxide-semiconductor is connected to the DC power supply terminal, and the of first metal-oxide-semiconductor
Two ends are connected by the direct current generator with the first end of second metal-oxide-semiconductor, and the second end of second metal-oxide-semiconductor is connected to institute
State ground terminal, the control terminal of the control terminal of first metal-oxide-semiconductor and second metal-oxide-semiconductor is correspondingly connected with a drive signal output
End.
Further, the first end of first metal-oxide-semiconductor is connected to the DC power supply terminal, and the of first metal-oxide-semiconductor
Two ends are connected with the first end of second metal-oxide-semiconductor, and the second end of second metal-oxide-semiconductor is connected to institute by the direct current generator
State ground terminal, the control terminal of the control terminal of first metal-oxide-semiconductor and second metal-oxide-semiconductor is correspondingly connected with a drive signal output
End.
Specifically, when the electrical equipment is pneumatic massage equipment or shock wave treatment equipment, the pneumatic massage equipment
Or the shock wave treatment equipment includes direct current air pump, the driving device further includes baroceptor, the baroceptor
To detect the air pressure that the direct current air pump generates, the baroceptor is connected with the driving unit, wherein, in institute
When stating air pressure more than preset pressure threshold value, the driving unit judges the main switch failure.
In order to achieve the above objectives, on the other hand the utility model proposes a kind of electrical equipment, including above-mentioned electric appliance
The driving device of direct current generator in equipment.
The electrical equipment of the utility model, can be in master by the driving device of direct current generator in above-mentioned electrical equipment
Switch tube failure when by drive protection switch pipe turn off so that direct current generator force it is out of service, avoid direct current generator occur one
Situation about directly working improves the security of electrical equipment work.
Description of the drawings
The utility model is above-mentioned and/or additional aspect and advantage from the following description of the accompanying drawings of embodiments will
Become apparent and be readily appreciated that, wherein,
Fig. 1 a-1b are the circuit topology figures of the driving device of direct current generator in electrical equipment in correlation technique；
Fig. 2 a are the circuits of the driving device of direct current generator in the electrical equipment according to the utility model one embodiment
Topological diagram；
Fig. 2 b are the circuits of the driving device of direct current generator in the electrical equipment according to second embodiment of the utility model
Topological diagram；
Fig. 2 c are the circuits of the driving device of direct current generator in the electrical equipment according to the 3rd embodiment of the utility model
Topological diagram；
Fig. 3 a are the circuits of the driving device of direct current generator in the electrical equipment according to the 4th embodiment of the utility model
Topological diagram；
Fig. 3 b are the circuits of the driving device of direct current generator in the electrical equipment according to the 5th embodiment of the utility model
Topological diagram；
Fig. 3 c are the circuits of the driving device of direct current generator in the electrical equipment according to the 6th embodiment of the utility model
Topological diagram.
Specific embodiment
The embodiment of the utility model is described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning
Same or similar element is represented to same or similar label eventually or there is same or like element.Below by ginseng
The embodiment for examining attached drawing description is exemplary, it is intended to for explaining the utility model, and it is not intended that the utility model
Limitation.
Below with reference to the accompanying drawings the driving device and electric appliance of direct current generator in the electrical equipment of the utility model embodiment are described
Equipment.
As shown in figs. 2 a-2 c, the driving device of direct current generator includes in electrical equipment：Power supply, multiple driving switch
Pipe 10, driving unit 20.
Wherein, power supply includes DC power supply terminal VCC and ground terminal GND, and power supply is giving direct current generator 30 to power.
It is connected to after being serially connected between multiple driving switch pipes 10 and direct current generator 30 between DC power supply terminal VCC and ground terminal GND, it is more
A driving switch pipe 10 includes main switch and protection switch pipe.Driving unit 20 includes multiple driving signal output end (OUT1
And OUT2), each driving signal output end is correspondingly connected with the control terminal G to a driving switch pipe, and driving unit 20 passes through drive
Dynamic protection switch pipe be in being switched on or off for normal open state and driving main switch, direct current generator 30 to be controlled to be worked or
It is out of service, and when main switch fails by drive protection switch pipe turn off so that direct current generator 30 force it is out of service.
Wherein, in the embodiment of the utility model, multiple driving switch pipes 10 are the first metal-oxide-semiconductor Q1 and the second metal-oxide-semiconductor
Q2, the first metal-oxide-semiconductor Q1 and the second metal-oxide-semiconductor Q2 can be PMOS, or NMOS can make choice according to actual conditions,
It is by taking NMOS as an example in Fig. 2 a-2c.
Specifically, as shown in figs. 2 a-2 c, multiple driving switch pipes include main switch and protection switch pipe, can will scheme
The first metal-oxide-semiconductor Q1 in 2a-2c as main switch, the second metal-oxide-semiconductor Q2 as protection switch pipe, also can be by the second metal-oxide-semiconductor Q2
As main switch, the first metal-oxide-semiconductor Q1 as protection switch pipe, do not limit specifically.It is appreciated that as the first metal-oxide-semiconductor Q1 or
Voltage Vgs between the grid and source electrode of second metal-oxide-semiconductor Q2 is more than its cut-in voltage VTWhen, the first metal-oxide-semiconductor Q1 or the second metal-oxide-semiconductor
There is conducting channel and turns in Q2, so driving unit 20 exports corresponding drive signal to first by driving signal output end
Metal-oxide-semiconductor Q1 and the second metal-oxide-semiconductor Q2, you can the ON/OFF of control the first metal-oxide-semiconductor Q1 or the second metal-oxide-semiconductor Q2, so as to control direct current
Unlatching/closing of motor 30.
As the first metal-oxide-semiconductor Q1 and the second metal-oxide-semiconductor Q2 normal, driving unit 20 drives the first metal-oxide-semiconductor Q1 and the second metal-oxide-semiconductor
Any one metal-oxide-semiconductor (protection switch pipe) is in normal open state in Q2, and controls another metal-oxide-semiconductor (main switch according to actual needs
Pipe) ON/OFF, to control unlatching/closing of direct current generator 30.If protection switch pipe is constantly in and is led due to damage
Logical state, driving unit 20 can export low level signal to the control terminal of protection switch pipe, to turn off protection switch pipe, so as to
Direct current generator 30 is made to be disconnected with power supply, forces direct current generator 30 out of service.The device can lose in main switch as a result,
By protection switch pipe being driven to turn off so that direct current generator is forced out of service during effect, direct current generator generation is avoided to work always
Situation, can fail the risk brought in certain degree to avoid switching tube.
As a kind of example, as shown in Figure 2 a, the first end (drain electrode) of the first metal-oxide-semiconductor Q1 is connected to by direct current generator 30
The second end (source electrode) of DC power supply terminal VCC, the first metal-oxide-semiconductor Q1 are connected with the first end (drain electrode) of the second metal-oxide-semiconductor Q2, and second
The second end (source electrode) of metal-oxide-semiconductor Q2 is connected to ground terminal GND, the control terminal G (grid) of the first metal-oxide-semiconductor Q1 and the control of the second metal-oxide-semiconductor
End G (grid) processed is correspondingly connected with a driving signal output end (OUT1, OUT2).
As another example, as shown in Figure 2 b, the first end of the first metal-oxide-semiconductor Q1 is connected to DC power supply terminal VCC, and first
The second end of metal-oxide-semiconductor Q1 is connected by direct current generator 30 with the first end of the second metal-oxide-semiconductor Q2, and the second end of the second metal-oxide-semiconductor Q2 connects
Being connected to the control terminal G of ground terminal GND, the control terminal G of the first metal-oxide-semiconductor Q1 and the second metal-oxide-semiconductor Q2, to be correspondingly connected with a drive signal defeated
Outlet (OUT1, OUT2).
As another example, as shown in Figure 2 c, the first end of the first metal-oxide-semiconductor Q1 is connected to DC power supply terminal VCC, and first
The second end of metal-oxide-semiconductor Q1 is connected with the first end of the second metal-oxide-semiconductor Q2, and the second end of the second metal-oxide-semiconductor Q2 is connected by direct current generator 30
Being connected to the control terminal G of ground terminal GND, the control terminal G of the first metal-oxide-semiconductor Q1 and the second metal-oxide-semiconductor Q2, to be correspondingly connected with a drive signal defeated
Outlet (OUT1, OUT2).
It can be such as figure according to the circuit topology of the driving device of direct current generator in the electrical equipment of the utility model embodiment
Any one form in 2a, 2b or 2c, but form is at all events planted, those skilled in the art can be clear by above-described embodiment
Understand to Chu its operation principle.
One embodiment according to the present utility model, electrical equipment can be that pneumatic massage equipment or shock wave treatment are set
It is standby.Pneumatic massage equipment or shock wave treatment equipment include direct current air pump, and as shown in Figure 3 a-3b, driving device can also include
Baroceptor 40, for baroceptor 40 to detect the air pressure of direct current air pump generation, baroceptor 40 is single with driving
Member 20 is connected, wherein, when air pressure is more than preset pressure threshold value, driving unit 20 judges that main switch fails.Default pressure
Force threshold can be preset according to actual conditions.
Specifically, direct current air pump includes direct current generator 30, and driving unit 20 is by controlling being Turned on/off for direct current generator 30
To control whether direct current air pump runs.
When electrical equipment be pneumatic massage equipment when, driving unit 20 by the way that protection switch pipe is driven to be in normal open state,
And the on/off of main switch is driven according to demand, to control whether direct current air pump runs.Baroceptor 40 is detectable straight
The air pressure that gas pump generates, when baroceptor 40 detects that air pressure is more than preset pressure threshold value, driving unit
Judge that main switch fails, and protection switch pipe is controlled to turn off, so that direct current air pump is out of service, avoid air pressure further
Rise, ensure the security of pneumatic massage equipment work.
When electrical equipment is shock wave treatment equipment, driving unit 20 is by driving protection switch pipe to be in normal open shape
State, and the on/off of main switch is driven according to demand, to control whether direct current air pump runs.Meeting when direct current air pump is run
Air pressure is generated, when reaching certain pressure, the impact head of shock wave treatment equipment can be driven to generate physical impact.Together
When, baroceptor 40 can detect the air pressure of direct current air pump generation, when baroceptor 40 detects that air pressure is more than
During preset pressure threshold value, driving unit judges that main switch fails, and protection switch pipe is controlled to turn off, so that direct current air pump stops
Operation, avoids air pressure further up, ensures the security of shock wave treatment equipment work.
In conclusion in electrical equipment according to the present utility model direct current generator driving device, driving unit passes through drive
Dynamic protection switch pipe is in normal open state and drives being switched on or off for main switch, direct current generator to be controlled to be worked or is stopped
Only run, and when main switch fails by drive protection switch pipe turn off so that direct current generator force it is out of service, avoid
There is a situation where work always for direct current generator.When electrical equipment is pneumatic massage equipment or shock wave treatment equipment, in air
When pressure is more than preset pressure threshold value, driving unit judges that main switch fails, and controls direct current air pump out of service, carries significantly
The high security of pneumatic massage equipment and the work of shock wave treatment equipment.
In addition, the embodiment of the utility model also proposes a kind of electrical equipment, including direct current in above-mentioned electrical equipment
The driving device of motor.
The electrical equipment of the utility model, can be in master by the driving device of direct current generator in above-mentioned electrical equipment
Switch tube failure when by drive protection switch pipe turn off so that direct current generator force it is out of service, avoid direct current generator occur one
Situation about directly working improves the security of electrical equipment work.
In the description of the utility model, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width
Degree ", " thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outer ", " suitable
The orientation or position relationship of the instructions such as hour hands ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " are based on orientation shown in the drawings
Or position relationship, be for only for ease of description the utility model and simplify description rather than instruction or imply signified device or
Element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that limit to the utility model
System.
In addition, term " first ", " second " are only used for description purpose, and it is not intended that instruction or hint relative importance
Or the implicit quantity for indicating indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the utility model, " multiple " are meant that at least two, such as two
It is a, three etc., unless otherwise specifically defined.
In the utility model, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. terms should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or integral；Can be
Mechanical connection or electrical connection；It can be directly connected, can also be indirectly connected by intermediary, can be two
The interaction relationship of connection or two elements inside element, unless otherwise restricted clearly.For the common skill of this field
For art personnel, concrete meaning of the above-mentioned term in the utility model can be understood as the case may be.
In the utility model, unless otherwise clearly defined and limited, fisrt feature is "above" or "below" second feature
Can be that the first and second features contact directly or the first and second features pass through intermediary mediate contact.Moreover, first is special
Sign second feature " on ", " top " and " above " can be fisrt feature directly over second feature or oblique upper or only
Represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be with
It is fisrt feature immediately below second feature or obliquely downward or is merely representative of fisrt feature level height less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example description
Point is contained at least one embodiment or example of the utility model.In the present specification, to the schematic table of above-mentioned term
It states and is necessarily directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be with
It combines in an appropriate manner in any one or more of the embodiments or examples.In addition, without conflicting with each other, this field
Technical staff can by the different embodiments described in this specification or example and different embodiments or exemplary feature into
Row combines and combination.
Although the embodiment of the utility model has been shown and described above, it is to be understood that above-described embodiment is
Illustratively, it is impossible to be interpreted as the limitation to the utility model, those of ordinary skill in the art are in the scope of the utility model
It is interior above-described embodiment to be changed, changed, replaced and modification.
Claims (7)
1. a kind of driving device of direct current generator in electrical equipment, which is characterized in that including：
Power supply, the power supply include DC power supply terminal and ground terminal, and the power supply is giving the direct current generator
Power supply；
Multiple driving switch pipes are connected to described straight after being serially connected between multiple driving switch pipes and the direct current generator
It flows between feeder ear and the ground terminal, multiple driving switch pipes include main switch and protection switch pipe；
Driving unit, the driving unit include multiple driving signal output ends, and each driving signal output end, which corresponds to, to be connected
The control terminal of a driving switch pipe is connected to, the driving unit is by driving the protection switch pipe to be in normal open state and drive
It moves the main switch to be switched on or off, the direct current generator to be controlled to be worked or out of service, and open in the master
By the protection switch pipe being driven to turn off so that direct current generator pressure is out of service when closing tube failure.
2. the driving device of direct current generator in electrical equipment as described in claim 1, which is characterized in that multiple drivings are opened
Pipe is closed as the first metal-oxide-semiconductor and the second metal-oxide-semiconductor.
3. the driving device of direct current generator in electrical equipment as claimed in claim 2, which is characterized in that first metal-oxide-semiconductor
First end the DC power supply terminal, the second end of first metal-oxide-semiconductor and described second are connected to by the direct current generator
The first end of metal-oxide-semiconductor is connected, and the second end of second metal-oxide-semiconductor is connected to the ground terminal, the control terminal of first metal-oxide-semiconductor and
The control terminal of second metal-oxide-semiconductor is correspondingly connected with a driving signal output end.
4. the driving device of direct current generator in electrical equipment as claimed in claim 2, which is characterized in that first metal-oxide-semiconductor
First end be connected to the DC power supply terminal, the second end of first metal-oxide-semiconductor passes through the direct current generator and described second
The first end of metal-oxide-semiconductor is connected, and the second end of second metal-oxide-semiconductor is connected to the ground terminal, the control terminal of first metal-oxide-semiconductor and
The control terminal of second metal-oxide-semiconductor is correspondingly connected with a driving signal output end.
5. the driving device of direct current generator in electrical equipment as claimed in claim 2, which is characterized in that first metal-oxide-semiconductor
First end be connected to the DC power supply terminal, the second end of first metal-oxide-semiconductor and the first end phase of second metal-oxide-semiconductor
Even, the second end of second metal-oxide-semiconductor is connected to the ground terminal, the control terminal of first metal-oxide-semiconductor by the direct current generator
A driving signal output end is correspondingly connected with the control terminal of second metal-oxide-semiconductor.
6. the driving device of direct current generator in the electrical equipment as any one of claim 1-5, which is characterized in that described
When electrical equipment is pneumatic massage equipment or shock wave treatment equipment, the pneumatic massage equipment or the shock wave treatment equipment
Including direct current air pump, the driving device further includes baroceptor, and the baroceptor is detecting the direct current air pump
The air pressure of generation, the baroceptor are connected with the driving unit, wherein, it is more than default pressure in the air pressure
During force threshold, the driving unit judges the main switch failure.
7. a kind of electrical equipment, which is characterized in that including direct current in the electrical equipment as any one of claim 1-6
The driving device of machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721551305.7U CN207460039U (en) | 2017-11-17 | 2017-11-17 | The driving device and electrical equipment of direct current generator in electrical equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721551305.7U CN207460039U (en) | 2017-11-17 | 2017-11-17 | The driving device and electrical equipment of direct current generator in electrical equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207460039U true CN207460039U (en) | 2018-06-05 |
Family
ID=62280570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721551305.7U Active CN207460039U (en) | 2017-11-17 | 2017-11-17 | The driving device and electrical equipment of direct current generator in electrical equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207460039U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114177027A (en) * | 2021-12-22 | 2022-03-15 | 深圳市倍轻松科技股份有限公司 | Massager control method and related equipment thereof |
-
2017
- 2017-11-17 CN CN201721551305.7U patent/CN207460039U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114177027A (en) * | 2021-12-22 | 2022-03-15 | 深圳市倍轻松科技股份有限公司 | Massager control method and related equipment thereof |
| CN114177027B (en) * | 2021-12-22 | 2024-01-19 | 深圳市倍轻松科技股份有限公司 | Massager control method and related equipment thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104483883B (en) | A kind of relay control unit | |
| CN101869005A (en) | Improved start-up detection in a dimmer circuit | |
| CN206451010U (en) | A kind of hand propelled ground washing vehicle controller | |
| CN207460039U (en) | The driving device and electrical equipment of direct current generator in electrical equipment | |
| CN209329988U (en) | Servo motor braking circuit, servo motor braking system and robot | |
| CN203668704U (en) | Power-on control device for motor and door lock of washing machine and washing machine | |
| CN105159146B (en) | A kind of circuit of air conditioner and its low standby power loss | |
| CN107925375A (en) | Air conditioner | |
| CN103248349A (en) | Novel electronic alternating-current contactor | |
| CN102255488B (en) | Frequency converter stopping device | |
| CN106656131B (en) | Financial self-service equipment and power supply switch control circuit thereof | |
| CN103956946A (en) | Low-voltage high-power direct-current motor control circuit with overcurrent protection function | |
| CN103840717B (en) | Oil bath feeding machine controller | |
| CN203813714U (en) | Motor driving device and frequency-conversion household electrical appliance | |
| CN206894218U (en) | Washing machine and the short-circuit protection circuit for it | |
| CN207097748U (en) | A kind of relay and its faulty action preventing circuit | |
| CN104767181B (en) | Electrostatic protection device, SPM and frequency-conversion domestic electric appliances | |
| CN201537726U (en) | Main spindle box and electric workbench dragging device used for boring machine | |
| CN205793164U (en) | ON-OFF control circuit and bluetooth earphone for bluetooth earphone | |
| CN205920341U (en) | Three wire system switch | |
| CN205792329U (en) | Direct current motor drive circuit with current limiting | |
| CN107959491A (en) | A kind of high-efficiency and energy-saving type P+N raceway groove drive circuits | |
| CN203251254U (en) | A solid soft starting apparatus of a small-and-medium-sized air compressor | |
| CN211352087U (en) | Discontinuous working motor driving system with power isolation system | |
| CN108054721A (en) | A kind of game machine of use power supply with overvoltage and overcurrent protection |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |