CN106870426B - Fan motor powers off the circuit of brake automatically - Google Patents
Fan motor powers off the circuit of brake automatically Download PDFInfo
- Publication number
- CN106870426B CN106870426B CN201611219607.4A CN201611219607A CN106870426B CN 106870426 B CN106870426 B CN 106870426B CN 201611219607 A CN201611219607 A CN 201611219607A CN 106870426 B CN106870426 B CN 106870426B
- Authority
- CN
- China
- Prior art keywords
- resistor
- electrically connected
- switch module
- circuit
- upper arm
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Stopping Of Electric Motors (AREA)
Abstract
The present invention is the circuit that a kind of fan motor powers off brake automatically, including an energy-storage units, one motor drive circuit, the resistance unit of one control unit and one input power of connection, the energy-storage units are electrically connected the motor drive circuit, to receive and store an operation voltage, the motor drive circuit has on plural number, underarm switch module and one first, two driving units, the control unit be electrically connected the opposite underarm switch module with this first, two driving units, the operation voltage is provided through energy-storage units when power-off to be connected to the upper arm switch module, the upper arm switch module is enabled to form a loop with the motor coil and brake.
Description
【Technical field】
The present invention powers off the circuit of brake automatically about a kind of fan motor, it is espespecially a kind of with automatic braking function it
Fan motor powers off the circuit of brake automatically.
【Background technology】
In recent years, it is driven in conjunction with electronic power switch using numerical digit microcontroller (Micro-Controller Unit, MCU)
Dynamic circuit, carries out the design of electronic product, has been the common technology of current industry.However, when operating the electronic product, the number
8-digit microcontroller and the electronic power switch can be because operation cause the electronic product to generate amount of heat in high frequency；Therefore,
The radiating requirements of the electronic product will become considerable design project.
Currently, the wind dispelling that more typical radiating mode carries out the electronic product with the operating of fan system radiates, however base
In considering for fan control and user's safety operation, which would generally be in conjunction with a brake circuit, so as to disconnected in power supply
When electric, stop the operating of the fan system, to ensure the accuracy of fan control and the safe operation of user.
As shown in fig.1, commonly known fan brake circuit 1 includes bridge driver 11, a controller 13, one brake
Circuit 14 and motor coil a L, an input power Vin are connected to the bridge driver 11, controller 13 and the brake circuit 14
To provide needed for the power supply of the above-mentioned component, and the bridge driver 11 is by arm switch M1, M2 and two times arm switches M3, M4 on two
It is constituted, so when fan powers off, is the control through the brake circuit 14, is reached with carrying out the operation to shut down immediately
To the effect of brake.But due to needing the controller 13 doing pulse to two times arm switches M3, M4 in known fan brake circuit 1
Width modulation signal (PULSE WIDTH MODULATION；PWM) cut-sytle pollination, be changed to controller 13 to arm switch M1 on two,
M2 does pulse width modulation signal cut-sytle pollination, but arm switch M1, M2 on two can be made to increase with control resistance temperature, so
It must must increase electronic component (such as resistor) and solve the problems, such as above-mentioned temperature rise to handle, and two times arm switches M3, M4 are
It is electrically connected with 14 phase of brake circuit, will certainly be because of the setting of the brake circuit 14, and cause cost to increase and increase electricity
Road connects complexity.
【Invention content】
Therefore, it is effectively to solve the problems, such as above-mentioned, one of present invention purpose a kind of making electricity providing through a resistance unit
Road carries braking function, and is provided on plural number of the operation voltage to a motor drive circuit when power-off by an energy-storage units
Arm switch component enables the upper arm switch module and a motor coil form a loop and achievees the effect that the fan horse of brake
Up to the circuit for powering off brake automatically.
Another object of the present invention is providing a kind of electricity for having and reaching the fan motor for saving cost and powering off brake automatically
Road.
In order to achieve the above object, the present invention powers off the circuit of brake automatically, including an energy storage list in a kind of fan motor of offer
Member, a motor drive circuit, a control unit and a resistance unit, the energy-storage units receive and store an operation voltage, the horse
Have plural upper arm switch module, plural underarm switch module, one first driving unit and one second driving single up to driving circuit
One first end of member, the upper arm switch module is electrically connected the energy-storage units and receives the operation voltage, one second end difference
It is mutually electrically connected with a first end of the opposite underarm switch module and the motor coil, a second end of the underarm switch module
It is then connected to a ground terminal, and the opposite upper arm switch module is electrically connected in a first end of first and second driving unit
A third end, and control unit is electrically connected a third end and the one of first and second driving unit for the opposite lower arm switch
Second end, and one end of the resistance unit is electrically connected an input power, the other end is electrically connected opposite first and second driving
One third end of unit and the second end of the underarm switch module, wherein when the fan powers off, which receives
It is connected to the operation voltage that the energy-storage units provide, which is not turned on without the operation voltage is received,
Enable the upper arm switch module and the motor coil form a loop and achieve the effect that brake, and also effectively reach saving at
This effect.
Implement one, which has one first upper arm switch module and one second upper arm switch module, should
The first end of first and second upper arm switch member is mutually electrically connected with the energy-storage units, and the other end connection of the energy-storage units should
The both ends of the opposite motor coil are electrically connected in ground terminal, the second end of the first and second upper arm switch module, this
One, the first end of opposite first and second driving unit is electrically connected in the third end of two upper arm switch modules.
Implement one, which has one first underarm switch module and one second underarm switch module, should
The both ends of the opposite motor coil are electrically connected in the first end of first and second underarm switch module, which opens
The second end for closing component is respectively and electrically connected to the ground terminal, and the third end of the first and second underarm switch module electrically connects respectively
Connect the opposite control unit.
Implement one, which is a resistor, and one end of the resistance unit is electrically connected the input power, the electricity
Hinder the other end and the second of the third end of first and second driving unit and the first and second underarm switch module relatively of unit
End is mutually electrically connected.
Implement one, which is a central processing unit or a microcontroller.
Implement one, which includes one first transistor, a first resistor device, a second resistor, one
3rd resistor device, one the 4th resistor and one first capacitor, first transistor have a base stage, an emitter-base bandgap grading and a collector,
The collector is electrically connected one end of the second resistor, which is electrically connected one end and ground terminal of the 3rd resistor device,
The other end of the 3rd resistor device is another with one end of first capacitor, one end of the first resistor device and the second resistor
One end is mutually electrically connected jointly, and the first resistor device connect the another of the opposite resistance unit with the other end of the first capacitor
The one end at end, the 4th resistor is electrically connected the base stage, and the other end is electrically connected the opposite control unit.
Implement one, which includes one second transistor, one the 5th resistor, one the 6th resistor, one
7th resistor, one the 8th resistor and one second capacitor, second transistor have a base stage, an emitter-base bandgap grading and a collector,
The collector of second transistor is electrically connected one end of the 7th resistor, and the emitter-base bandgap grading of second transistor is electrically connected should
One end of 6th resistor and the ground terminal, the other end of the 6th resistor and one end of second capacitor, the 5th electricity
The one end and the other end of the 7th resistor for hindering device are mutually electrically connected jointly, and the 5th resistor and the second capacitor is another
The other end of the opposite resistance unit of one end connection, one end of the 8th resistor is electrically connected the base of second transistor
Pole, the other end are electrically connected the opposite control unit.
Implement one, which is 0 ohmic resistor.
【Description of the drawings】
Fig. 1 is known fan brake circuit circuit diagram；
Fig. 2 is the block schematic diagram of one of present invention embodiment；
Fig. 3 is the circuit diagram of one of present invention embodiment.
Primary symbols explanation：
Fan motor powers off the circuit ... 2 of brake automatically
Energy-storage units ... 21
Motor drive circuit ... 22
First upper arm switch module ... 221
Second upper arm switch module ... 222
First end ... 2211,2221
Second end ... 2212,2222
Third end ... 2213,2223
First underarm switch module ... 223
Second underarm switch module ... 224
First end ... 2231,2241
Second end ... 2232,2242
Third end ... 2233,2243
First driving unit ... 225
Second driving unit ... 226
First end ... 2251,2261
Second end ... 2252,2262
Third end ... 2253,2263
Control unit ... 24
Resistance unit ... 25
Motor coil ... L
Input power ... Vin
Operate voltage ... Vcc
Operating voltage ... Vs
Ground terminal ... GND
MOS transistors ... M1 on first
MOS transistors ... M2 on second
First time MOS transistors ... M3
Second time MOS transistors ... M4
First transistor ... Q1
Second transistor ... Q2
First resistor device ... R1
Second resistor ... R2
3rd resistor device ... R3
4th resistor ... R4
5th resistor ... R5
6th resistor ... R6
7th resistor ... R7
8th resistor ... R8
9th resistor ... R9
Tenth resistor ... R10
Eleventh resistor device ... R11
Twelfth resistor device ... R12
Thirteenth resistor device ... R13
First capacitor ... C1
Second capacitor ... C2
Third capacitor ... C3
4th capacitor ... C4.
【Specific implementation mode】
The above-mentioned purpose and its structure of the present invention and characteristic functionally, will give according to the preferred embodiment of institute's accompanying drawings
Explanation.
The present invention provides a kind of circuit 2 of fan motor power-off brake automatically, please refers to Fig. 2, shown in 3, display is of the invention
Preferred embodiment square and circuit diagram；The circuit 2 that the fan motor powers off brake automatically is applied in a fan (such as axis
Flow fan or centrifugal fan；Do not show in figure) on, which includes an energy-storage units 21, a motor drive circuit 22, one control
Unit 24 and a resistance unit 25, the energy-storage units 21 are expressed as a capacitor in the present embodiment, and the energy-storage units 21 are connecing
An operation voltage vcc (such as 12 volts) is received and stores, and the motor drive circuit 22 has plural upper arm switch module, plural number
Underarm switch module, one first driving unit 225 and one second driving unit 226, the upper arm switch module is in the present embodiment table
2 upper arm switch modules are shown as, which has one first upper arm switch module 221 and one second upper arm switching group
Part 222, the first and second upper arm switch module 221,222 respectively have 2211,2221, one second end 2212,2222 of a first end and
One third end 2213,2223, and 2211,2221 (the i.e. arm switch on this of first end of the first and second upper arm switch member 221,222
The first end 2211 of component, 2221) with the mutually electric connection of the opposite energy-storage units 21 and receive the operation voltage vcc, this
One, the second end 2212,2222 (second end 2212,2222 of the upper arm switch module) of two upper arm switch modules 221,222 with
The both ends of opposite motor coil L are mutually electrically connected, the third end 2213,2223 of the first and second upper arm switch module 221,222
The one first of opposite first driving unit 225 is electrically connected in (i.e. the third end 2213,2223 of the upper arm switch module)
One first end 2261 at end 2251 and second driving unit 226.
And the underarm switch module is expressed as 2 underarm switch modules in the present embodiment, which has one
First underarm switch module 223 and one second underarm switch module 224, the first and second underarm switch module 223,224 respectively have
One first end, 2231,2241, one second end 2232,2242 and a third end 2233,2243, the first and second underarm switch module
223,224 first end 2231,2241 (first end 2231,2241 of the lower switch component) be electrically connected it is opposite this
One, the second end 2212,2222 of two upper arm switch modules 221,222, the second of the first and second underarm switch module 223,224
2232,2242 (second ends 2232,2242 of the lower switch component) of end are then connected to a ground terminal GND, and this is under first and second
The third end 2233,2243 (underarm closes the third end 2233,2243 of component) of arm switch component 223,224 electrically connects respectively
Connect the opposite control unit 24.Aforementioned first and second driving unit 225,226 respectively has aforementioned first ends 2251,2261,1 second
2252,2262 and one third end 2253,2263, the first end 2251,2261 of first and second driving unit 225,226 is held to distinguish
It is electrically connected the third end 2213,2223 of the opposite upper arm switch module, the second end of first and second driving unit 225,226
2252,2262 it is electrically connected the opposite control unit 24, the third end 2253 of first and second driving unit 225,226,
2263 are electrically connected the opposite other end of the resistance unit 25 and the second end of the first and second underarm switch module 223,224
2232,2242 and ground terminal GND, and one end of the resistance unit 25 is electrically connected an input power Vin, input power Vin
(such as 12 volts) are providing power supply.
Another person, aforementioned resistance unit 25 are a resistor, indicate that resistance unit 25 is 0 ohmic resistor in the present embodiment.
Aforementioned control unit 24 is a central processing unit (Central Processing Unit, CPU) or a microcontroller (Micro
Control unit, MCU), and there is the control unit 24 plural pin, wherein the four of the control unit 24 pin to connect respectively
Connect the second end 2252,2262 and the first and second underarm switch module 223,224 of corresponding first and second driving unit 225,226
Third end 2233,2243, and four pins of aforementioned control unit 24 are exporting a pulse width modulation (Pulse
Width Modulation；PWM) signal controls first and second driving unit 225,226 and respectively drives on corresponding first and second
First and second underarm is opened with control for the switch motion (such as switch is conducting or switch is to be not turned on) of arm switch component 221,222
The switch motion (such as switch is conducting or switch is to be not turned on) of pass component 223,224, and another pin of the control unit 24
It is electrically connected a Hall element (not shown) if (such as the 5th pin), it, should to receive the Hall signal of Hall element transmission
An operating voltage Vs (such as 5 volts) is received if another pin (such as the 6th pin) of control unit 24.So through the present invention's
Aforementioned resistance unit 25 makes circuit carry braking function, and provides the operation voltage vcc when power-off by the energy-storage units 21
It is connected to the first and second upper arm switch module 221,222 of the motor drive circuit 22, enables the first and second upper arm switch module
221, two terminal shortcircuits of 222 and motor coil L form a loop and achieve the effect that brake.By the circuit 2 of the present invention
Design, after fan powers off, the flabellum of fan can rotate (or operating) because of the effect of inertia of itself, and according to faraday's electromagnetism
Induction law (Faraday's law), makes the motor coil L on loop generate induced current for closing coil, this sense
Induced current will make motor coil L generate an opposing magnetic field prevention flabellum operating, allow fan that can stop the effect for reaching brake quickly
Fruit.
It is continuous to please refer to shown in Fig. 3, it puts up with each structure and is described in detail：
Aforementioned first driving unit 225 include one first transistor Q1, a first resistor device R1, a second resistor R2,
One 3rd resistor device R3, one the 4th resistor R4 and one first capacitor C1, the first transistor Q1 are expressed as in the present embodiment
BJT (Bipolar Junction Transistor) transistor, first transistor Q1 have a base stage, an emitter-base bandgap grading and a collection
The collector of pole, first transistor Q1 is electrically connected one end of second resistor R2, and the emitter-base bandgap grading of first transistor Q1 is electrical
Connect one end of 3rd resistor device R3 and the other end of ground terminal GND, 3rd resistor device R3 and first capacitor C1
One end, one end of first resistor device R1 and the other end of second resistor R2 be mutually electrically connected jointly, and this first electricity
The other end of resistance device R1 connect the other end of the opposite resistance unit 25, the 4th electricity with the other end of the first capacitor C1 jointly
One end of resistance device R4 is electrically connected the base stage of first transistor Q1, and the other end is electrically connected the one of the opposite control unit 24
Pin (such as the first pin).
And second driving unit 226 include one second transistor Q2, one the 5th resistor R5, one the 6th resistor R6,
One the 7th resistor R7, one the 8th resistor R8 and one second capacitor C2, second transistor Q2 have a base stage, an emitter-base bandgap grading
And a collector, the collector of second transistor Q2 are electrically connected one end of the 7th resistor R7, the second transistor Q2's penetrates
Pole is electrically connected one end and the ground terminal GND of the 6th resistor R6, the other end of the 6th resistor R6 and second electricity
The other end of one end of container C2, one end of the 5th resistor R5 and the 7th resistor R7 is mutually electrically connected jointly, and should
The other end of 5th resistor R5 connect the other end of relatively aforementioned resistance unit 25 with the other end of the second capacitor C2 jointly,
One end of 8th resistor R8 is electrically connected the base stage of second transistor Q2, and the other end is electrically connected the opposite control list
Another pin (such as the second pin) of member 24.
Aforementioned first upper arm switch module 221 includes MOS transistor M1 on one first, the second upper arm switch module 222
Including MOS transistors M2 on one second, this on first and second MOS transistors M1, M2 be expressed as a p-type gold oxygen half in the present embodiment
Effect (PMOS) transistor, and the source electrode of MOS transistors M1, the M2 on first and second opposite energy-storage units 21 of connection jointly
The other end (i.e. the cathode of the energy-storage units 21) of one end (i.e. the anodes of the energy-storage units 21), the energy-storage units 21 is electrically connected
Ground terminal GND, the wherein energy-storage units 21 are electrically connected a regulator rectifier circuit (not shown), aforementioned regulator rectifier circuit
The operation voltage vcc (such as 12 volts) will be exported after the input power Vin received (such as 12 volts) rectified voltage stabilizing to this
Energy-storage units 21, and corresponding first and second capacitor is electrically connected in the gate of MOS transistors M1, the M2 on first and second
One end.And the first underarm switch module 223 includes first time MOS transistors M3, one the 9th resistor R9,1 the tenth electricity
A device R10 and third capacitor C3 is hindered, which is expressed as a N-type OH in the present embodiment
(NMOS) transistor, the drain of first time MOS transistors M3 are electrically connected the drain of the corresponding MOS transistors M1 on first
And one end of motor coil L, the gate of first time MOS transistors M3 are electrically connected the nine, the ten resistor R9, R10's
One end and one end of third capacitor C3, the other end and the ground terminal of the other end and the tenth resistance of third capacitor C3
GND is electrically connected together jointly, another pin of the corresponding control unit 24 of the other end of the 9th resistor R9 connection (such as the
Three pins).
Another person, the aforementioned second underarm switch module 224 include second time MOS transistors M4, an eleventh resistor device
R11, a twelfth resistor device R12 and one the 4th capacitor C4, second time MOS transistors M4 are expressed as a N in the present embodiment
Type OH (NMOS) transistor, the drain of second time MOS transistors M4 are electrically connected the corresponding MOS electricity on second
The drain of crystal M2 and the other end of motor coil L, the gate of second time MOS transistors M4 are electrically connected the 11st, ten
One end of two resistor R11, R12 and one end of the 4th capacitor C4, the other end of the 4th capacitor C4 and the 12nd electricity
The other end of resistance and ground terminal GND are electrically connected together jointly, corresponding control of other end connection of eleventh resistor device R11
Another pin (such as the 4th pin) of unit 24 processed, and the source electrode of first and second time MOS transistors M3, the M4 and 1 the 13rd electricity
One end of resistance device R13 is mutually electrically connected, and the other end of thirteenth resistor device R13 is electrically connected ground terminal GND.
So when fan will start, which can receive input power Vin, and by the control list
The pwm signal of 24 output of member controls first and second driving unit 225,226 and respectively drives MOS transistors on corresponding first and second
The switch motion of M1, M2 and the switch motion for controlling first and second time MOS transistors M3, the M4 are used and reach control fan fortune
Turn and rotation speed of the fan, while the energy-storage units 21 can will receive operation voltage vcc storage (i.e. energy-storage units 21 are electrically charged)；
If when fan powers off, aforementioned control unit 24 does not receive operating voltage Vs and cannot work, the opposite control unit 24
Four pin current potentials of middle output pwm signal are 0 volt, make the first and second transistor of first and second driving unit 225,226
Q1, Q2, first and second time MOS transistors M3, the M4 are also not turned on, at this time the gate of MOS transistors M1, the M2 on first and second
It is pulled down as (i.e. 0 volt of low potential each by being connected with the cathode of energy-storage units with respect to the third, six resistor R3, R6
It is special), and the operation voltage vcc stored by the energy-storage units 21 (i.e. 12 volts) can be supplied to the MOS electricity crystalline substances on first and second simultaneously
The source electrode of body M1, M2, make the source voltage of MOS transistors M1, the M2 on first and second discharge for high potential through energy-storage units 21 to be
12 volts, the voltage between the source electrode and gate of MOS transistors M1, the M2 on first and second is minus 12 volts (- 12V) at this time, simultaneously
MOS transistors M1, M2 conductings on first and second (i.e. the source electrode of MOS transistors M1, the M2 on first and second are connected with drain), make
This on first and second MOS transistors M1, M2 and two terminal shortcircuits of motor coil L form loop, the flabellum sheet after being powered off because of fan
Body effect of inertia and operate, make to generate induced current in the motor coil L on loop, this induced current will make motor coil
L generates an opposing magnetic field and flabellum is prevented to operate, and fan can be stopped achieving the effect that brake quickly.
Therefore, by the resistance unit 25 of connecting between the input power Vin of the present invention and the other end of first resistor device R1
And the circuit structure design for a resistor of not connecting between the other end of first capacitor C1 and operation voltage vcc, make circuit 2
Operation voltage vcc is provided to the of the motor drive circuit 22 when power-off with braking function, and by the energy-storage units 21
One, two upper arm switch modules 221,222 and be connected, enable the first and second upper arm switch module 221,222 and motor coil L-shaped at
Loop achievees the effect that brake in turn.In addition, through the design of this circuit 2 of the invention so that known horse can be effectively improved
Underarm switch module up to brake circuit needs additionally to be added more electronic components and realizes brake, therefore the present invention can effectively reach
Save the effect of cost.
Claims (8)
1. a kind of fan motor powers off the circuit of brake automatically, which is characterized in that including：
One energy-storage units receive and store an operation voltage；
One motor drive circuit has plural upper arm switch module, plural underarm switch module, one first driving unit and one the
One first end of two driving units, the upper arm switch module is electrically connected the energy-storage units and receives the operation voltage, one
Two ends are mutually electrically connected with a first end of the opposite underarm switch module and the motor coil respectively, the underarm switch module
One second end is then connected to a ground terminal, and the opposite upper arm is electrically connected in a first end of first and second driving unit
One third end of switch module；
One control unit is electrically connected a second end at the third end and first and second driving unit of the opposite lower arm switch；
One resistance unit, one end are electrically connected an input power, and the other end is electrically connected opposite first and second driving unit
A third end and the underarm switch module second end；And
Wherein when the fan powers off, which receives the operation voltage of energy-storage units offer and is connected,
The underarm switch module does not receive the operation voltage and is not turned on, and the upper arm switch module is enabled to form an envelope with the motor coil
Loop circuit and brake.
2. fan motor according to claim 1 powers off the circuit of brake automatically, which is characterized in that the upper arm switch module
With one first upper arm switch module and one second upper arm switch module, the first end of the first and second upper arm switch member with should
Energy-storage units are mutually electrically connected, and the opposite motor coil is electrically connected in the second end of the first and second upper arm switch module
Both ends, the third end of the first and second upper arm switch module be electrically connected opposite first and second driving unit this
One end.
3. fan motor according to claim 2 powers off the circuit of brake automatically, which is characterized in that the underarm switch module
With one first underarm switch module and one second underarm switch module, first end point of the first and second underarm switch module
Electricity Xing Lianjie not be with respect to the both ends of the motor coil, the second end of the first and second underarm switch module is respectively and electrically connected to this
The opposite control unit is electrically connected in the third end of ground terminal, the first and second underarm switch module.
4. fan motor according to claim 3 powers off the circuit of brake automatically, which is characterized in that the resistance unit is one
One end of resistor, the resistance unit is electrically connected the input power, the other end of the resistance unit and opposite first and second drive
The third end of moving cell and the second end of the first and second underarm switch module are mutually electrically connected.
5. fan motor according to claim 1 powers off the circuit of brake automatically, which is characterized in that the control unit is one
Central processing unit or a microcontroller.
6. fan motor according to claim 1 powers off the circuit of brake automatically, which is characterized in that first driving unit
Including one first transistor, a first resistor device, a second resistor, a 3rd resistor device, one the 4th resistor and one first
There is a base stage, an emitter-base bandgap grading and a collector, the collector to be electrically connected the one of the second resistor for capacitor, first transistor
End, the emitter-base bandgap grading are electrically connected one end and ground terminal of the 3rd resistor device, the other end of the 3rd resistor device and first electricity
The other end of one end of container, one end of the first resistor device and the second resistor is mutually electrically connected jointly, and first electricity
Resistance device connect the other end of the opposite resistance unit with the other end of the first capacitor, and one end of the 4th resistor is electrically connected
The base stage, the other end are electrically connected the opposite control unit.
7. fan motor according to claim 6 powers off the circuit of brake automatically, which is characterized in that second driving unit
Including one second transistor, one the 5th resistor, one the 6th resistor, one the 7th resistor, one the 8th resistor and one second
Capacitor, second transistor have a base stage, an emitter-base bandgap grading and a collector, and the collector of second transistor is electrically connected should
The emitter-base bandgap grading of one end of the 7th resistor, second transistor is electrically connected one end and the ground terminal of the 6th resistor, should
The other end of 6th resistor is another with one end of second capacitor, one end of the 5th resistor and the 7th resistor
End is common to be mutually electrically connected, and the 5th resistor connect the another of the opposite resistance unit with the other end of the second capacitor
The one end at end, the 8th resistor is electrically connected the base stage of second transistor, and the other end is electrically connected the opposite control
Unit.
8. fan motor according to claim 4 powers off the circuit of brake automatically, which is characterized in that the resistance unit is 0
Ohmic resistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611219607.4A CN106870426B (en) | 2016-12-26 | 2016-12-26 | Fan motor powers off the circuit of brake automatically |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611219607.4A CN106870426B (en) | 2016-12-26 | 2016-12-26 | Fan motor powers off the circuit of brake automatically |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106870426A CN106870426A (en) | 2017-06-20 |
| CN106870426B true CN106870426B (en) | 2018-07-31 |
Family
ID=59164182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611219607.4A Active CN106870426B (en) | 2016-12-26 | 2016-12-26 | Fan motor powers off the circuit of brake automatically |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106870426B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI732582B (en) * | 2020-06-03 | 2021-07-01 | 大陸商奇宏電子（深圳）有限公司 | Active brake circuit for fan with backup power |
| CN111669078A (en) * | 2020-06-03 | 2020-09-15 | 奇宏电子(深圳)有限公司 | Fan brake circuit of active standby power supply |
| US11296622B2 (en) | 2020-06-23 | 2022-04-05 | Asia Vital Components (Shen Zhen) Co., Ltd. | Active brake circuit for fan with backup power |
| TWI764498B (en) | 2021-01-08 | 2022-05-11 | 朋程科技股份有限公司 | Electric actuator device and control method thereof |
| TWI790862B (en) * | 2021-12-17 | 2023-01-21 | 茂達電子股份有限公司 | Braking control system of motor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101846092A (en) * | 2004-03-23 | 2010-09-29 | 台达电子工业股份有限公司 | Method for instantly shutting down fan after power cut and structure thereof |
| CN102116304A (en) * | 2010-01-05 | 2011-07-06 | 建准电机工业股份有限公司 | Fan system and brake circuit thereof |
| CN105650016A (en) * | 2014-11-21 | 2016-06-08 | 奇鋐科技股份有限公司 | Circuit for outage brake of DC fan |
| CN206478031U (en) * | 2016-12-26 | 2017-09-08 | 奇鋐科技股份有限公司 | Fan motor powers off the circuit of brake automatically |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI314388B (en) * | 2005-12-23 | 2009-09-01 | Delta Electronics Inc | Fan system and real-time stopping device thereof |
| JP2013174077A (en) * | 2012-02-24 | 2013-09-05 | Hi-Lex Corporation | Opening/closing body control device |
-
2016
- 2016-12-26 CN CN201611219607.4A patent/CN106870426B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101846092A (en) * | 2004-03-23 | 2010-09-29 | 台达电子工业股份有限公司 | Method for instantly shutting down fan after power cut and structure thereof |
| CN102116304A (en) * | 2010-01-05 | 2011-07-06 | 建准电机工业股份有限公司 | Fan system and brake circuit thereof |
| CN105650016A (en) * | 2014-11-21 | 2016-06-08 | 奇鋐科技股份有限公司 | Circuit for outage brake of DC fan |
| CN206478031U (en) * | 2016-12-26 | 2017-09-08 | 奇鋐科技股份有限公司 | Fan motor powers off the circuit of brake automatically |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106870426A (en) | 2017-06-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106870426B (en) | Fan motor powers off the circuit of brake automatically | |
| CN106559025A (en) | Electric tool and its motor driven systems | |
| CN106374739B (en) | A kind of circuit of synchronous rectification | |
| CN107947543A (en) | Multi input component level Quick shut-off device and its drive circuit and photovoltaic system | |
| CN207691676U (en) | A kind of Bootstrapping drive circuit, bootstrapping drive system and brshless DC motor | |
| CN206478031U (en) | Fan motor powers off the circuit of brake automatically | |
| CN218587093U (en) | Drive circuit of alternating current motor coil | |
| CN206513603U (en) | Fan foreward/rearward rotation controller and use its power supply unit | |
| CN207743857U (en) | Multi input component level Quick shut-off device and its driving circuit and photovoltaic system | |
| CN104038195B (en) | C-type relay control module and operation method thereof | |
| US11470885B2 (en) | Power supply drive module, power supply device and electronic cigarette | |
| CN115603615A (en) | Drive circuit of alternating current motor coil | |
| CN102570806B (en) | Power module and power supply system applicable to same | |
| CN211321011U (en) | Relay control circuit and electronic equipment | |
| CN209523909U (en) | A kind of voltage-controlled fan motor forward and reverse driving device | |
| CN209994263U (en) | Power-on sequence control circuit | |
| TWI614984B (en) | Fan motor power failure automatic brake circuit | |
| CN206879112U (en) | A kind of heat driven control chip | |
| CN209129911U (en) | A kind of cooling fan circuit and electronic device | |
| CN207720106U (en) | A kind of high-efficiency and energy-saving type P+N raceway groove driving circuits | |
| CN107135555A (en) | A kind of heat driven control chip | |
| CN104454614B (en) | A kind of fan intelligent being applicable to vehicle cooling system controls the control device of device | |
| CN215897620U (en) | Single-phase brushless motor drive circuit | |
| CN114267284B (en) | Display control circuit, display device and integrated control chip | |
| TWM539183U (en) | Automatic braking circuit for power-off of fan motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |