CN204425226U - A kind of motor driven protective circuit and there are the electric equipment products of this circuit - Google Patents
A kind of motor driven protective circuit and there are the electric equipment products of this circuit Download PDFInfo
- Publication number
- CN204425226U CN204425226U CN201420850357.4U CN201420850357U CN204425226U CN 204425226 U CN204425226 U CN 204425226U CN 201420850357 U CN201420850357 U CN 201420850357U CN 204425226 U CN204425226 U CN 204425226U
- Authority
- CN
- China
- Prior art keywords
- pin
- switching tube
- branch road
- motor
- power supply
- 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
Abstract
The utility model discloses a kind of motor driven protective circuit and have the electric equipment products of this circuit, wherein, described motor driven protective circuit comprises: power supply branch road, for driving branch road and second to drive branch road to provide electric energy for first; Fault detect branch road is arranged at described power supply branch road and described first and drives branch road and described second to drive between branch road, for detecting whether normally working of described motor; Described first drives branch road, for when described motor normally works, drives described motor; Described second drives branch road, for when described motor irregular working, drives described motor; Motor rotary speed controlling brancher, drives branch road for coordinating described first or coordinates described second to drive branch road to control the velocity of rotation of described motor.The technical solution of the utility model makes motor when breaking down by arranging motor driven protective circuit, can start driving branch road for subsequent use, ensures that motor and the system with this motor can normally be run.
Description
Technical field
The utility model relates to electric and electronic technical field, particularly a kind of motor driven protective circuit and have the electric equipment products of this circuit.
Background technology
Along with the development of power electronic technology, various electric equipment products and equipment are applied to the every field of productive life.Described motor is being commonly called as of motor. its operation principle is mechanical energy by converting electric energy, and it mainly comprises a stator winding in order to the electromagnet winding or distribution that produce magnetic field and a rotating armature or rotor.Under the effect of stator winding rotating magnetic field, it has electric current to pass through and is subject to the effect in magnetic field and makes it rotate in stator winding effective edge.According to motor invertibity principle, if motor, in its structure, any change does not occur, motor and motor use, and also can make generator and use.It is a kind of machine of mechanical energy by converting electric energy.The acting part of usual motor rotates, and this motor is called rotor electromotor; Also there is moving linearly, be called linear motor.The power bracket that electronic function provides is very large, from milliwatt level to multikilowatt.Lathe, water pump, need motor to drive; Electric locomotive, elevator, need motor to draw.Electric fan in family life, refrigerator, washing machine, even various motor toy all be unable to do without motor.Motor has been applied in the various aspects in modern society's life.
But existing application of electric motors, i.e., in each technical field of motor, usually do not arrange the failure detector of special motor, therefore, when described motor problem, must cause the fault of whole system.
Utility model content
In view of the above problems, proposing the utility model to provide a kind of overcomes the problems referred to above or to solve the problem at least in part, and the technical solution of the utility model is achieved in that
On the one hand, the utility model provides a kind of motor driven protective circuit, comprising: power supply branch road, and first drives branch road, and second drives branch road, fault detect branch road, motor rotary speed controlling brancher;
Described power supply branch road, for driving branch road to provide electric energy for described first driving branch road and described second;
Described fault detect branch road is arranged at described power supply branch road and described first and drives branch road and described second to drive between branch road, for detecting whether normally working of described motor;
Described first drives branch road, for when described motor normally works, drives described motor;
Described second drives branch road, for when described motor irregular working, drives described motor;
Described motor rotary speed controlling brancher, drives branch road for coordinating described first or coordinates described second to drive branch road to control the velocity of rotation of described motor.
Preferably, described power supply branch road comprises: power supply chip U1 and electric capacity C1;
Described power supply chip U1 pin one is connected with described electric capacity C1 one end; Described electric capacity C1 other end ground connection;
Described power supply chip U1 pin two ground connection;
Described power supply chip U1 pin 3 is connected with the enable control end of described motor power respectively;
Described power supply chip U1 pin 4 meets power supply VCC.
Preferably, described power supply branch road comprises: power supply chip U1, resistance R2 and electric capacity C1;
Described power supply chip U1 pin one is connected with described electric capacity C1 one end; Described electric capacity C1 other end ground connection;
Described power supply chip U1 pin two ground connection;
Described power supply chip U1 pin 3 respectively with described resistance R2 one end, the enable control end of described motor power be connected; Described resistance R2 other end ground connection;
Described power supply chip U1 pin 4 meets power supply VCC.
Preferably, described electric capacity C1 adopts microfarad range electric capacity.
Preferably, described fault detect branch road comprises: sampling resistor R5; Described sampling resistor R5 two ends are connected with two sampled signal end AD-1 of controller, AD-2 respectively; Described sampling resistor R5 connects described sampled signal end AD-1 and holds, and is also connected with described power supply chip U1 pin one, and described sampling resistor R5 connects described sampled signal end AD-2 and holds, and also drives branch road to be connected with described first.
Preferably, described sampling resistor R5 adopts the precision resister of little resistance.
Preferably, described first branch road is driven to comprise: switching tube Q4, switching tube Q1;
The pin two of described switching tube Q4 is connected with resistance R5 one end of described fault detect branch road; The pin one of described switching tube Q4 is connected with the switching signal SWITCH_1 of described controller; The pin 3 of described switching tube Q4 connects the pin one of described motor;
Described switching tube Q1 pin two is connected with described resistance R5 one end; Described switching tube Q1 pin one is connected with the switching signal SWITCH_2 of described controller; Described switching tube Q1 pin 3 connects described second and drives branch road.
Preferably, described first branch road is driven to comprise: resistance R1, switching tube Q4, resistance R4, switching tube Q1;
Described resistance R1 one end connects resistance R5 one end of described fault detect branch road respectively, the pin two of described switching tube Q4; The described resistance R1 other end connects the pin one of described switching tube Q4 respectively, the switching signal SWITCH_1 of described controller; The pin 3 of described switching tube Q4 connects the pin one of described motor;
Described resistance R4 one end connects described resistance R5 one end respectively, described switching tube Q1 pin two; The described resistance R4 other end connects described switching tube Q1 pin one respectively, the switching signal SWITCH_2 of described controller; Described switching tube Q1 pin 3 connects described second and drives branch road.
Preferably, described second branch road is driven: switching tube Q2, switching tube Q5, switching tube Q6, resistance R3;
Be connected with described switching tube Q1 pin 3 after described switching tube Q2 pin two is connected with described switching tube Q5 pin two;
Be connected with described switching tube Q6 pin two after described switching tube Q2 pin one is connected with described switching tube Q5 pin one;
Described switching tube Q2 pin 3 connects described resistance R3 one end respectively, described controller error signal end ERROR, and described switching tube Q6 pin one is connected; Described resistance R3 other end ground connection;
Described switching tube Q5 pin 3 is connected with described switching tube Q6 pin two;
Described switching tube Q6 pin 3 is connected with the pin one of described motor.
Preferably, described motor rotary speed controlling brancher comprises: switching tube Q3;
Described switching tube Q3 pin one respectively with the pulse-width modulation end of described controller, earth terminal is connected;
Described switching tube Q3 pin two ground connection;
Described switching tube Q3 pin 3 and pin 5, after pin 6 is connected, connect described motor pin two;
Described switching tube Q3 pin 4 connects described motor pin one.
Preferably, described motor rotary speed controlling brancher comprises: switching tube Q3 and resistance R6;
Described switching tube Q3 pin one respectively with described resistance R6 one end, the pulse-width modulation end of described controller is connected; Described resistance R6 other end ground connection;
Described switching tube Q3 pin two ground connection;
Described switching tube Q3 pin 3 and pin 5, after pin 6 is connected, connect described motor pin two;
Described switching tube Q3 pin 4 connects described motor pin one.
Preferably, the inner integrated protection diode of described switching tube Q3.
On the other hand, the utility model provides a kind of electric equipment products, comprising: the motor driven protective circuit described in any one as above.
Whether the technical solution of the utility model detects motor by fault detect branch road and normally works, if normally worked, then continues employing first and drives branch road; If it is abnormal to detect motor operations by described fault detect branch road, then transfers employing second to and drive branch road to carry out work.Therefore, the technical solution of the utility model makes motor when breaking down by arranging motor driven protective circuit, can start driving branch road for subsequent use, ensures that motor and the system with this motor can normally be run.
Accompanying drawing explanation
A kind of motor driven protective circuit structural representation that Fig. 1 provides for the utility model embodiment;
A kind of motor driven protective circuit figure that Fig. 2 provides for the utility model embodiment;
The another kind of motor driven protective circuit figure that Fig. 3 provides for the utility model embodiment;
A kind of electric equipment products structural representation that Fig. 4 provides for the utility model embodiment.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearly, below in conjunction with accompanying drawing, the utility model execution mode is described in further detail.
As a kind of motor driven protective circuit that Fig. 1 provides for being depicted as the utility model embodiment; This circuit comprises: power supply branch road, and first drives branch road, and second drives branch road, fault detect branch road, motor rotary speed controlling brancher;
Described power supply branch road, for driving branch road to provide electric energy for described first driving branch road and described second;
Described fault detect branch road is arranged at described power supply branch road and described first and drives branch road and described second to drive between branch road, for detecting whether normally working of described motor;
Described first drives branch road, for when described motor normally works, drives described motor;
Described second drives branch road, for when described motor irregular working, drives described motor;
Described motor rotary speed controlling brancher, drives branch road for coordinating described first or coordinates described second to drive branch road to control the velocity of rotation of described motor.
Based on above embodiment, as shown in Figure 2, be a kind of motor driven protective circuit that the utility model embodiment provides; This circuit, comprising: power supply branch road, and first drives branch road, and second drives branch road, fault detect branch road, motor rotary speed controlling brancher;
Described power supply branch road comprises: power supply chip U1 and electric capacity C1;
Described power supply chip U1 pin one is connected with described electric capacity C1 one end; Described electric capacity C1 other end ground connection;
Described power supply chip U1 pin two ground connection;
Described power supply chip U1 pin 3 is connected with the enable control end of described motor power respectively;
Described power supply chip U1 pin 4 meets power supply VCC.
Wherein, described electric capacity C1 adopts microfarad range electric capacity.
Described fault detect branch road comprises: sampling resistor R5; Described sampling resistor R5 two ends are connected with two sampled signal end AD-1 of controller, AD-2 respectively; Described sampling resistor R5 connects described sampled signal end AD-1 and holds, and is also connected with described power supply chip U1 pin one, and described sampling resistor R5 connects described sampled signal end AD-2 and holds, and also drives branch road to be connected with described first.
Wherein, described sampling resistor R5 adopts the precision resister of little resistance.
Described first drives branch road to comprise: switching tube Q4, switching tube Q1;
The pin two of described switching tube Q4 is connected with resistance R5 one end of described fault detect branch road; The pin one of described switching tube Q4 is connected with the switching signal SWITCH_1 of described controller; The pin 3 of described switching tube Q4 connects the pin one of described motor;
Described switching tube Q1 pin two is connected with described resistance R5 one end; Described switching tube Q1 pin one is connected with the switching signal SWITCH_2 of described controller; Described switching tube Q1 pin 3 connects described second and drives branch road.
Described second drives branch road: switching tube Q2, switching tube Q5, switching tube Q6, resistance R3;
Be connected with described switching tube Q1 pin 3 after described switching tube Q2 pin two is connected with described switching tube Q5 pin two;
Be connected with described switching tube Q6 pin two after described switching tube Q2 pin one is connected with described switching tube Q5 pin one;
Described switching tube Q2 pin 3 connects described resistance R3 one end respectively, described controller error signal end ERROR, and described switching tube Q6 pin one is connected; Described resistance R3 other end ground connection;
Described switching tube Q5 pin 3 is connected with described switching tube Q6 pin two;
Described switching tube Q6 pin 3 is connected with the pin one of described motor.
Described motor rotary speed controlling brancher comprises: switching tube Q3;
Described switching tube Q3 pin one respectively with the pulse-width modulation end of described controller, earth terminal is connected;
Described switching tube Q3 pin two ground connection;
Described switching tube Q3 pin 3 and pin 5, after pin 6 is connected, connect described motor pin two;
Described switching tube Q3 pin 4 connects described motor pin one.
Wherein, the inner integrated protection diode of described switching tube Q3.
Based on above embodiment, as shown in Figure 3, be another kind of motor driven protective circuit that the utility model embodiment provides; This circuit, comprising: power supply branch road, and first drives branch road, and second drives branch road, fault detect branch road, motor rotary speed controlling brancher;
Described power supply branch road comprises: power supply chip U1, resistance R2 and electric capacity C1;
Described power supply chip U1 pin one is connected with described electric capacity C1 one end; Described electric capacity C1 other end ground connection;
Described power supply chip U1 pin two ground connection;
Described power supply chip U1 pin 3 respectively with described resistance R2 one end, the enable control end of described motor power be connected; Described resistance R2 other end ground connection;
Described power supply chip U1 pin 4 meets power supply VCC.
Described fault detect branch road comprises: sampling resistor R5; Described sampling resistor R5 two ends are connected with two sampled signal end AD-1 of controller, AD-2 respectively; Described sampling resistor R5 connects described sampled signal end AD-1 and holds, and is also connected with described power supply chip U1 pin one, and described sampling resistor R5 connects described sampled signal end AD-2 and holds, and also drives branch road to be connected with described first.
Described first drives branch road to comprise: resistance R1, switching tube Q4, resistance R4, switching tube Q1;
Described resistance R1 one end connects resistance R5 one end of described fault detect branch road respectively, the pin two of described switching tube Q4; The described resistance R1 other end connects the pin one of described switching tube Q4 respectively, the switching signal SWITCH_1 of described controller; The pin 3 of described switching tube Q4 connects the pin one of described motor;
Described resistance R4 one end connects described resistance R5 one end respectively, described switching tube Q1 pin two; The described resistance R4 other end connects described switching tube Q1 pin one respectively, the switching signal SWITCH_2 of described controller; Described switching tube Q1 pin 3 connects described second and drives branch road.
Described second drives branch road: switching tube Q2, switching tube Q5, switching tube Q6, resistance R3;
Be connected with described switching tube Q1 pin 3 after described switching tube Q2 pin two is connected with described switching tube Q5 pin two;
Be connected with described switching tube Q6 pin two after described switching tube Q2 pin one is connected with described switching tube Q5 pin one;
Described switching tube Q2 pin 3 connects described resistance R3 one end respectively, described controller error signal end ERROR, and described switching tube Q6 pin one is connected; Described resistance R3 other end ground connection;
Described switching tube Q5 pin 3 is connected with described switching tube Q6 pin two;
Described switching tube Q6 pin 3 is connected with the pin one of described motor.
Described motor rotary speed controlling brancher comprises: switching tube Q3 and resistance R6;
Described switching tube Q3 pin one respectively with described resistance R6 one end, the pulse-width modulation end of described controller is connected; Described resistance R6 other end ground connection;
Described switching tube Q3 pin two ground connection;
Described switching tube Q3 pin 3 and pin 5, after pin 6 is connected, connect described motor pin two;
Described switching tube Q3 pin 4 connects described motor pin one.
It should be noted that, the inner integrated protection diode of described switching tube Q3.Described switching tube Q4, Q1 can manage for P-MOS, and this pipe selects conducting voltage lower; Described open pipe pipe Q2, Q5, Q6 are the PNP triode that model is identical; Described resistance R4, R1, R2, R6 all can select 100K ohms, ensure circuit stability; Described electric capacity C1 adopts microfarad range electric capacity; Described sampling resistor R5 adopts the precision resister of little resistance.
Based on above circuit, its operation principle is described in detail:
Under normal circumstances, controller MCU sends control signal and controls described power supply chip U1, motor and velocity of rotation thereof.It is high level that controller MCU sends power enable control signal by MOTRO_LDO_EN end, and pulse-width modulation end PWM_MOTOR is exported the PWM waveform controlling revolution and need by MCU.Controller send switching signal SWITCH_1 to be low level by switching tube human hair combing waste, and SWITCH_2 is high level, makes switching tube Q4 conducting, switching tube Q1 turns off, after electric current flows out from power supply chip U1, successively through resistance R5, switching tube Q4, motor, and switching tube Q3 is to ground.
When revolution, AD sampling is carried out to the voltage at resistance R5 two ends, controller inside presets normal On current should be less than ISET-1, then only have the voltage signal V2 when controller sampling, V1, when meeting V2-V1<=R5*ISET-1, MCU thinks working well of motor, and the constant output SWITCH_1 of MCU is low level, and SWITCH_2 is high level, the conducting of maintained switch pipe Q4 and the off state of switching tube Q1, this is the first drive current path.The PWM ripple that now motor rotary speed exports by MCU controls.
As described sampled signal V2-V1 > R5*ISET-1, then think that the running of motor MOTOR is abnormal, now MCU exports SWITCH_1 is high level, and SWITCH_2 is low level, and switching tube Q4 is turned off and switching tube Q1 conducting.Like this, make to flow through resistance R5 successively, switching tube Q1, switching tube Q5, switching tube Q6, motor, switching tube Q3, last ground connection from power supply chip U1 electric current out, this is the second drive current path.When this path, the PWM that the rotating speed of motor not exclusively exports by MCU controls, but with the constant current operation set, until sampled voltage recovers normal, after returning to the first drive current path, has recovered again the completely control of MCU to motor.
In described second drive current path, due to described open pipe pipe Q2, Q5, Q6 are the triode that model is identical, so β
q5=β
q2=β
q6=β, IC0=IC1=IC; β is the direct current multiplication factor of triode.
At the current equation of node A be: I
e2=I
c+ 2I
b=I
c+ 2I
c/ β,
So, I
c=[β/(β+2)] * I
e2=[β/(β+2)] * [(1+ β)/β] * I
c2
＝[(1+β)/(β+2]]*I
C2
In Node B, I
r3=I
b2+ I
c=I
c2/ β+[(1+ β)/(β+2)] * I
c2
Can obtain: I
c2=(1-2/ (β 2+2 β+2)) * I
r3≈ I
r3, I
r3=(V1-U
q1DS-U
bE0)/R3,
U
q1DSfor the pressure drop of the drain-source pole of Q1 conducting, this pressure drop is generally about 0.3V,
U
bE0for the conduction voltage drop of triode BE pole, this pressure drop is generally about 0.7V,
When β=20, I
c2≈ 0.996IR3, visible, even if when β is very little time, also can I be met
c2≈ I
r3, and β is larger, corresponding I
c2also more close to I
r3, substantially can think that both are equal.
So, by the selection to the resistance of R3, I can be set
r3, this current value is the constant current value arranged, as V2-V1 > R5*I
sET-1time, just become the second drive current path from described first drive current path, and crossing current exports, i.e. I
c2for steady state value, would not, because of the fault of motor itself, cause electric current infinitely to increase like this, cause motor to damage, even and then have influence on the performance of whole system.
The utility model can by setting two current limit, the sample rate current preset value I that namely described fault detect branch road is corresponding in MCU
sET-1, and the constant-current source current value that second drives setting corresponding to branch road;
Like this, the operating current when motor is made to be not more than current limit I
sET-1time, normally work, the PWM ripple that current controlled device processed exports controls output current, the rotating speed of motor; When exceeding current limit I
sET-1time, think to there occurs fault, then just by the Current Control constant current operation on second current value by motor, and send a cue simultaneously and be given to MCU, allow MCU process action accordingly, avoid and disturb the too high motor failure caused of operating current of the motor caused even to have influence on the normal work of whole system because of motor or other.
As shown in Figure 4, be a kind of electric equipment products that the utility model embodiment provides; This product, comprising: motor driven protective circuit as above.
Whether the technical solution of the utility model detects motor by fault detect branch road and normally works, if normal work, continues employing first and drives branch road; If detecting motor by described fault detect branch road is irregular working, then second is adopted to drive branch road to carry out work.Therefore; the technical solution of the utility model makes motor when breaking down by arranging motor driven protective circuit; driving branch road for subsequent use can be started; ensure that motor and the system with this motor can normally be run; so not only can extend the useful life of motor, the stability of whole system can also be improved.
The foregoing is only preferred embodiment of the present utility model, be not intended to limit protection range of the present utility model.All do within spirit of the present utility model and principle any amendment, equivalent replacement, improvement etc., be all included in protection range of the present utility model.
Claims (10)
1. a motor driven protective circuit, is characterized in that, comprising: power supply branch road, and first drives branch road, and second drives branch road, fault detect branch road, motor rotary speed controlling brancher;
Described power supply branch road, for driving branch road to provide electric energy for described first driving branch road and described second;
Described fault detect branch road is arranged at described power supply branch road and described first and drives branch road and described second to drive between branch road, for detecting whether normally working of described motor;
Described first drives branch road, for when described motor normally works, drives described motor;
Described second drives branch road, for when described motor irregular working, drives described motor;
Described motor rotary speed controlling brancher, drives branch road for coordinating described first or coordinates described second to drive branch road to control the velocity of rotation of described motor.
2. motor driven protective circuit according to claim 1, is characterized in that,
Described power supply branch road comprises: power supply chip U1 and electric capacity C1;
Described power supply chip U1 pin one is connected with described electric capacity C1 one end; Described electric capacity C1 other end ground connection;
Described power supply chip U1 pin two ground connection;
Described power supply chip U1 pin 3 is connected with the enable control end of described motor power respectively;
Described power supply chip U1 pin 4 meets power supply VCC;
Or,
Described power supply branch road comprises: power supply chip U1, resistance R2 and electric capacity C1;
Described power supply chip U1 pin one is connected with described electric capacity C1 one end; Described electric capacity C1 other end ground connection;
Described power supply chip U1 pin two ground connection;
Described power supply chip U1 pin 3 respectively with described resistance R2 one end, the enable control end of described motor power be connected; Described resistance R2 other end ground connection;
Described power supply chip U1 pin 4 meets power supply VCC.
3. motor driven protective circuit according to claim 2, is characterized in that, described electric capacity C1 adopts microfarad range electric capacity.
4. the motor driven protective circuit according to Claims 2 or 3, is characterized in that, described fault detect branch road comprises: sampling resistor R5; Described sampling resistor R5 two ends are connected with two sampled signal end AD-1 of controller, AD-2 respectively; Described sampling resistor R5 connects described sampled signal end AD-1 and holds, and is also connected with described power supply chip U1 pin one, and described sampling resistor R5 connects described sampled signal end AD-2 and holds, and also drives branch road to be connected with described first.
5. motor driven protective circuit according to claim 4, is characterized in that, described sampling resistor R5 adopts the precision resister of little resistance.
6. motor driven protective circuit according to claim 5, is characterized in that,
Described first drives branch road to comprise: switching tube Q4, switching tube Q1;
The pin two of described switching tube Q4 is connected with resistance R5 one end of described fault detect branch road; The pin one of described switching tube Q4 is connected with the switching signal SWITCH_1 of described controller; The pin 3 of described switching tube Q4 connects the pin one of described motor;
Described switching tube Q1 pin two is connected with described resistance R5 one end; Described switching tube Q1 pin one is connected with the switching signal SWITCH_2 of described controller; Described switching tube Q1 pin 3 connects described second and drives branch road;
Or,
Described first drives branch road to comprise: resistance R1, switching tube Q4, resistance R4, switching tube Q1;
Described resistance R1 one end connects resistance R5 one end of described fault detect branch road respectively, the pin two of described switching tube Q4; The described resistance R1 other end connects the pin one of described switching tube Q4 respectively, the switching signal SWITCH_1 of described controller; The pin 3 of described switching tube Q4 connects the pin one of described motor;
Described resistance R4 one end connects described resistance R5 one end respectively, described switching tube Q1 pin two; The described resistance R4 other end connects described switching tube Q1 pin one respectively, the switching signal SWITCH_2 of described controller; Described switching tube Q1 pin 3 connects described second and drives branch road.
7. motor driven protective circuit according to claim 6, is characterized in that,
Described second drives branch road: switching tube Q2, switching tube Q5, switching tube Q6, resistance R3;
Be connected with described switching tube Q1 pin 3 after described switching tube Q2 pin two is connected with described switching tube Q5 pin two;
Be connected with described switching tube Q6 pin two after described switching tube Q2 pin one is connected with described switching tube Q5 pin one;
Described switching tube Q2 pin 3 connects described resistance R3 one end respectively, described controller error signal end ERROR, and described switching tube Q6 pin one is connected; Described resistance R3 other end ground connection;
Described switching tube Q5 pin 3 is connected with described switching tube Q6 pin two;
Described switching tube Q6 pin 3 is connected with the pin one of described motor.
8. motor driven protective circuit according to claim 7, is characterized in that,
Described motor rotary speed controlling brancher comprises: switching tube Q3;
Described switching tube Q3 pin one respectively with the pulse-width modulation end of described controller, earth terminal is connected;
Described switching tube Q3 pin two ground connection;
Described switching tube Q3 pin 3 and pin 5, after pin 6 is connected, connect described motor pin two;
Described switching tube Q3 pin 4 connects described motor pin one;
Or,
Described motor rotary speed controlling brancher comprises: switching tube Q3 and resistance R6;
Described switching tube Q3 pin one respectively with described resistance R6 one end, the pulse-width modulation end of described controller is connected; Described resistance R6 other end ground connection;
Described switching tube Q3 pin two ground connection;
Described switching tube Q3 pin 3 and pin 5, after pin 6 is connected, connect described motor pin two;
Described switching tube Q3 pin 4 connects described motor pin one.
9. motor driven protective circuit according to claim 8, is characterized in that, the inner integrated protection diode of described switching tube Q3.
10. electric equipment products, is characterized in that, comprising: motor driven protective circuit according to any one of claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420850357.4U CN204425226U (en) | 2014-12-26 | 2014-12-26 | A kind of motor driven protective circuit and there are the electric equipment products of this circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420850357.4U CN204425226U (en) | 2014-12-26 | 2014-12-26 | A kind of motor driven protective circuit and there are the electric equipment products of this circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204425226U true CN204425226U (en) | 2015-06-24 |
Family
ID=53475554
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420850357.4U Active CN204425226U (en) | 2014-12-26 | 2014-12-26 | A kind of motor driven protective circuit and there are the electric equipment products of this circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204425226U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104579114A (en) * | 2014-12-26 | 2015-04-29 | 青岛歌尔声学科技有限公司 | Motor drive protection circuit and electrical products with same |
| CN111487894A (en) * | 2020-04-29 | 2020-08-04 | 上海氦豚机器人科技有限公司 | Multi-mechanism drive control device and beverage machine |
-
2014
- 2014-12-26 CN CN201420850357.4U patent/CN204425226U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104579114A (en) * | 2014-12-26 | 2015-04-29 | 青岛歌尔声学科技有限公司 | Motor drive protection circuit and electrical products with same |
| CN104579114B (en) * | 2014-12-26 | 2018-01-30 | 青岛歌尔声学科技有限公司 | A kind of motor driven protective circuit and the electric equipment products with the circuit |
| CN111487894A (en) * | 2020-04-29 | 2020-08-04 | 上海氦豚机器人科技有限公司 | Multi-mechanism drive control device and beverage machine |
| CN111487894B (en) * | 2020-04-29 | 2024-01-30 | 上海氦豚机器人科技有限公司 | Multi-mechanism driving control device and beverage machine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104579114A (en) | Motor drive protection circuit and electrical products with same | |
| CN104767429A (en) | Brushless direct current motor power inverter power-on self-test device and self-test method | |
| CN203895363U (en) | Driving and switch state detection circuit of relay | |
| CN108988736A (en) | A kind of servo-system and its real-time control method of repid discharge | |
| CN204425226U (en) | A kind of motor driven protective circuit and there are the electric equipment products of this circuit | |
| CN103956940B (en) | The contrary wind starting control method and control device of direct current generator in air-conditioner outdoor unit | |
| CN205232080U (en) | Motor driving device | |
| CN206727911U (en) | Brush direct current motor driver | |
| CN203965581U (en) | The failure detector of direct current generator Drive and Control Circuit | |
| CN206226334U (en) | A kind of the control system for non-brush direct currunt electromotors for preventing accidental activation | |
| CN102013861B (en) | Direct-current brushless motor system and driving method thereof | |
| CN104052351A (en) | Stepper motor single-phase driver circuit for digital resistance-free constant-current numerically-controlled machine tools | |
| CN203313152U (en) | Combined switch push-pull pulse output unit | |
| CN205283446U (en) | High accuracy stepper motor controller | |
| CN205647310U (en) | Brushless DC motor's DSP controlling means | |
| CN106385207B (en) | A kind of the control system for non-brush direct currunt electromotors preventing accidental activation | |
| CN204610329U (en) | A kind of Industrial fan | |
| CN104009701A (en) | Variable frequency controller for alternating current motor | |
| CN211500997U (en) | Water shortage protection control device based on water pump | |
| CN103016378A (en) | Driving circuit and driving method of external rotor electronic control type fan adjuster | |
| CN202840499U (en) | Motor, controller and power drive circuit thereof | |
| CN102748315A (en) | Control method of direct-current brushless fan controller for fan filter unit | |
| CN102411322A (en) | Single chip microcomputer maloperation prevention driving method and circuit thereof | |
| CN202856676U (en) | Stepper motor driver | |
| CN204031021U (en) | The nonpolarity control circuit of a kind of brshless DC motor voltage |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |