CN103915822B - A kind of motor and overvoltage crowbar thereof - Google Patents
A kind of motor and overvoltage crowbar thereof Download PDFInfo
- Publication number
- CN103915822B CN103915822B CN201210594572.8A CN201210594572A CN103915822B CN 103915822 B CN103915822 B CN 103915822B CN 201210594572 A CN201210594572 A CN 201210594572A CN 103915822 B CN103915822 B CN 103915822B
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- Prior art keywords
- switching tube
- motor
- type triode
- divider resistance
- npn type
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- 239000004065 semiconductor Substances 0.000 claims description 16
- 230000005611 electricity Effects 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000001012 protector Effects 0.000 description 2
Abstract
The invention belongs to protection circuit field, particularly relate to a kind of motor and overvoltage crowbar thereof.Described motor overvoltages protection circuit includes: electric capacity C1, electric capacity C2, switching tube, divider resistance R1, divider resistance R2, divider resistance R3, divider resistance R4, stabilivolt D1, NPN type triode Q2 and NPN type triode Q3.In the present invention; motor overvoltages protection circuit uses discrete component to realize; when supply voltage is stablized, switching tube is held on, and motor supply access turns on; when there is fluctuation overvoltage in supply voltage; switching tube disconnects, and motor supply access cuts off, thus is effectively protected motor from damage; and circuit structure is simple, with low cost.
Description
Technical field
The invention belongs to protection circuit field, particularly relate to a kind of motor and overvoltage crowbar thereof.
Background technology
Overvoltage protection refers to that, when the supply voltage of protected circuit is higher than certain numerical value, protector cuts off should
Circuit, when supply voltage returns to normal range, protector turn on automatically.
Owing to present low-voltage motor running voltage is low, big voltage, the electrical network interference voltage of big electric current can damage
Motor, work and life to people bring the biggest inconvenience.
Summary of the invention
The purpose of the embodiment of the present invention is to provide a kind of motor overvoltages protection circuit, it is intended to solve to exist now
The too high problem that can damage motor of motor input voltage.
The embodiment of the present invention is achieved in that a kind of motor overvoltages protection circuit, and described motor overvoltages is protected
Circuit includes:
Electric capacity C1, electric capacity C2, switching tube, divider resistance R1, divider resistance R2, divider resistance R3,
Divider resistance R4, stabilivolt D1, NPN type triode Q2 and NPN type triode Q3；
The hot end of described switching tube is the input termination power of motor overvoltages protection circuit, described switching tube
The output that cold end is motor overvoltages protection circuit termination motor circuit, described electric capacity C1 and electric capacity C2
Being connected in parallel between described input and ground, the colelctor electrode of described NPN type triode Q2 connects described switching tube
Controlling end, the grounded emitter of described NPN type triode Q2, described divider resistance R1 is connected to described
Between control end and the cold end of switching tube, described divider resistance R2 is connected to the low electricity of described switching tube
Between position end and the base stage of NPN type triode Q2, the negative electrode of described stabilivolt D1 connects described switching tube
Cold end, the anode of described stabilivolt D1 connects the base of NPN type triode Q3 by divider resistance R3
Pole, the colelctor electrode of described NPN type triode Q3 meets the base stage of NPN type triode Q2, described NPN
The grounded emitter of type audion Q3, described divider resistance R4 be connected to the anode of described stabilivolt D1 with
Between ground.
The another object of the embodiment of the present invention is to provide a kind of motor, and described motor includes motor circuit and electricity
Machine overvoltage crowbar, described motor overvoltages protection circuit includes:
Electric capacity C1, electric capacity C2, switching tube, divider resistance R1, divider resistance R2, divider resistance R3,
Divider resistance R4, stabilivolt D1, NPN type triode Q2 and NPN type triode Q3；
The hot end of described switching tube is the input termination power of motor overvoltages protection circuit, described switching tube
The output that cold end is motor overvoltages protection circuit termination motor circuit, described electric capacity C1 and electric capacity C2
Being connected in parallel between described input and ground, the colelctor electrode of described NPN type triode Q2 connects described switching tube
Controlling end, the grounded emitter of described NPN type triode Q2, described divider resistance R1 is connected to described
Between control end and the cold end of switching tube, described divider resistance R2 is connected to the low electricity of described switching tube
Between position end and the base stage of NPN type triode Q2, the negative electrode of described stabilivolt D1 connects described switching tube
Cold end, the anode of described stabilivolt D1 connects the base of NPN type triode Q3 by divider resistance R3
Pole, the colelctor electrode of described NPN type triode Q3 meets the base stage of NPN type triode Q2, described NPN
The grounded emitter of type audion Q3, described divider resistance R4 be connected to the anode of described stabilivolt D1 with
Between ground.
In embodiments of the present invention, motor overvoltages protection circuit uses discrete component to realize, and works as supply voltage
When stablizing, switching tube is held on, and motor supply access turns on, when fluctuation overvoltage occurs in supply voltage
Time, switching tube disconnects, and motor supply access cuts off, thus is effectively protected motor from damage,
And circuit structure is simple, with low cost.
Accompanying drawing explanation
Fig. 1 is the circuit structure diagram of the motor overvoltages protection circuit that first embodiment of the invention provides；
Fig. 2 is the circuit structure diagram of the motor overvoltages protection circuit that second embodiment of the invention provides.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with accompanying drawing and reality
Execute example, the present invention is further elaborated.Only should be appreciated that specific embodiment described herein
Only in order to explain the present invention, it is not intended to limit the present invention.
Fig. 1 shows the circuit structure of the motor overvoltages protection circuit that first embodiment of the invention provides, in order to
Being easy to explanation, illustrate only the part relevant to the embodiment of the present invention, details are as follows.
A kind of motor overvoltages protection circuit, described motor overvoltages protection circuit includes:
Electric capacity C1, electric capacity C2, switching tube 100, divider resistance R1, divider resistance R2, divider resistance
R3, divider resistance R4, stabilivolt D1, NPN type triode Q2 and NPN type triode Q3；
The input termination power that hot end is motor overvoltages protection circuit of described switching tube 100, described in open
Close the output that cold end the is motor overvoltages protection circuit termination motor circuit of pipe 100, described electric capacity C1
With electric capacity C2 is connected in parallel between described input and ground, the colelctor electrode of described NPN type triode Q2 meets institute
State the control end of switching tube 100, the grounded emitter of described NPN type triode Q2, described divider resistance
R1 is connected between control end and the cold end of described switching tube 100, and described divider resistance R2 is connected to
Between cold end and the base stage of NPN type triode Q2 of described switching tube 100, described stabilivolt D1
Negative electrode connect the cold end of described switching tube 100, the anode of described stabilivolt D1 passes through divider resistance R3
Connecing the base stage of NPN type triode Q3, the colelctor electrode of described NPN type triode Q3 connects NPN type three pole
The base stage of pipe Q2, the grounded emitter of described NPN type triode Q3, described divider resistance R4 connects
Between anode and the ground of described stabilivolt D1.
As one embodiment of the invention, described switching tube 100 uses PNP type triode Q1, described PNP
The control end that base stage is switching tube 100 of type audion Q1, the colelctor electrode of described PNP type triode Q1
For the hot end of switching tube 100, the transmitting of described PNP type triode Q1 extremely switching tube 100 low
Potential end.
Fig. 2 shows the circuit structure of the motor overvoltages protection circuit that second embodiment of the invention provides, in order to
Being easy to explanation, illustrate only the part relevant to the embodiment of the present invention, details are as follows.
As one embodiment of the invention, described switching tube 100 uses p-type metal-oxide-semiconductor Q4, described p-type
The grid of metal-oxide-semiconductor Q4 is the control end of switching tube 100, and the drain electrode of described p-type metal-oxide-semiconductor Q4 is for opening
Close the hot end of pipe 100, the cold end that source electrode is switching tube 100 of described p-type metal-oxide-semiconductor Q4.
As it is shown in figure 1, the embodiment of the present invention also provides for a kind of motor, described motor includes motor circuit and electricity
Machine overvoltage crowbar, described motor overvoltages protection circuit includes:
Electric capacity C1, electric capacity C2, switching tube 100, divider resistance R1, divider resistance R2, divider resistance
R3, divider resistance R4, stabilivolt D1, NPN type triode Q2 and NPN type triode Q3；
The input termination power that hot end is motor overvoltages protection circuit of described switching tube 100, described in open
Close the output that cold end the is motor overvoltages protection circuit termination motor circuit of pipe 100, described electric capacity C1
With electric capacity C2 is connected in parallel between described input and ground, the colelctor electrode of described NPN type triode Q2 meets institute
State the control end of switching tube 100, the grounded emitter of described NPN type triode Q2, described divider resistance
R1 is connected between control end and the cold end of described switching tube 100, and described divider resistance R2 is connected to
Between cold end and the base stage of NPN type triode Q2 of described switching tube 100, described stabilivolt D1
Negative electrode connect the cold end of described switching tube 100, the anode of described stabilivolt D1 passes through divider resistance R3
Connecing the base stage of NPN type triode Q3, the colelctor electrode of described NPN type triode Q3 connects NPN type three pole
The base stage of pipe Q2, the grounded emitter of described NPN type triode Q3, described divider resistance R4 connects
Between anode and the ground of described stabilivolt D1.
As one embodiment of the invention, described switching tube 100 uses PNP type triode Q1, described PNP
The control end that base stage is switching tube 100 of type audion Q1, the colelctor electrode of described PNP type triode Q1
For the hot end of switching tube 100, the transmitting of described PNP type triode Q1 extremely switching tube 100 low
Potential end.
As in figure 2 it is shown, as one embodiment of the invention, described switching tube 100 uses p-type metal-oxide-semiconductor Q4,
The control end that grid is switching tube 100 of described p-type metal-oxide-semiconductor Q4, described p-type metal-oxide-semiconductor Q4's
Drain electrode is the hot end of switching tube 100, and the source electrode of described p-type metal-oxide-semiconductor Q4 is the low of switching tube 100
Potential end.
In embodiments of the present invention, switching tube can turn on or cut off motor supply access, when power supply goes out
During existing overvoltage, motor can be effectively protected to play filter action from damage, electric capacity C1, electric capacity C2,
And NPN type triode Q2 and NPN type triode Q3 play the effect of amplifier tube.
In embodiments of the present invention, motor overvoltages protection circuit uses discrete component to realize, and works as supply voltage
When stablizing, switching tube is held on, and motor supply access turns on, when fluctuation overvoltage occurs in supply voltage
Time, switching tube disconnects, and motor supply access cuts off, thus is effectively protected motor from damage,
And circuit structure is simple, with low cost.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all at this
Any amendment, equivalent and the improvement etc. made within bright spirit and principle, should be included in the present invention
Protection domain within.
Claims (6)
1. a motor overvoltages protection circuit, it is characterised in that described motor overvoltages protection circuit includes:
Electric capacity C1, electric capacity C2, switching tube, divider resistance R1, divider resistance R2, divider resistance R3,
Divider resistance R4, stabilivolt D1, NPN type triode Q2 and NPN type triode Q3；
The hot end of described switching tube is the input termination power of motor overvoltages protection circuit, described switching tube
The output that cold end is motor overvoltages protection circuit termination motor circuit, described electric capacity C1 and electric capacity C2
Being connected in parallel between described input and ground, the colelctor electrode of described NPN type triode Q2 connects described switching tube
Controlling end, the grounded emitter of described NPN type triode Q2, described divider resistance R1 is connected to described
Between control end and the cold end of switching tube, described divider resistance R2 is connected to the low electricity of described switching tube
Between position end and the base stage of NPN type triode Q2, the negative electrode of described stabilivolt D1 connects described switching tube
Cold end, the anode of described stabilivolt D1 connects the base of NPN type triode Q3 by divider resistance R3
Pole, the colelctor electrode of described NPN type triode Q3 meets the base stage of NPN type triode Q2, described NPN
The grounded emitter of type audion Q3, described divider resistance R4 be connected to the anode of described stabilivolt D1 with
Between ground；
Switching tube conducting or cut-out motor supply access, when overvoltage occurs in power supply, switching tube is protected
Motor is from damage, and electric capacity C1, electric capacity C2 play filter action, and NPN type triode Q2 and NPN
Type audion Q3 plays the effect of amplifier tube.
2. motor overvoltages protection circuit as claimed in claim 1, it is characterised in that described switching tube uses
PNP type triode Q1, the base stage of described PNP type triode Q1 is the control end of switching tube, described PNP
The hot end of the current collection extremely switching tube of type audion Q1, the emitter stage of described PNP type triode Q1
Cold end for switching tube.
3. motor overvoltages protection circuit as claimed in claim 1, it is characterised in that described switching tube uses
The control end that grid is switching tube of p-type metal-oxide-semiconductor Q4, described p-type metal-oxide-semiconductor Q4, described p-type
The hot end that drain electrode is switching tube of metal-oxide-semiconductor Q4, the source electrode of described p-type metal-oxide-semiconductor Q4 is switch
The cold end of pipe.
4. a motor, described motor includes motor circuit and motor overvoltages protection circuit, it is characterised in that
Described motor overvoltages protection circuit includes:
Electric capacity C1, electric capacity C2, switching tube, divider resistance R1, divider resistance R2, divider resistance R3,
Divider resistance R4, stabilivolt D1, NPN type triode Q2 and NPN type triode Q3；
The hot end of described switching tube is the input termination power of motor overvoltages protection circuit, described switching tube
The output that cold end is motor overvoltages protection circuit termination motor circuit, described electric capacity C1 and electric capacity C2
Being connected in parallel between described input and ground, the colelctor electrode of described NPN type triode Q2 connects described switching tube
Controlling end, the grounded emitter of described NPN type triode Q2, described divider resistance R1 is connected to described
Between control end and the cold end of switching tube, described divider resistance R2 is connected to the low electricity of described switching tube
Between position end and the base stage of NPN type triode Q2, the negative electrode of described stabilivolt D1 connects described switching tube
Cold end, the anode of described stabilivolt D1 connects the base of NPN type triode Q3 by divider resistance R3
Pole, the colelctor electrode of described NPN type triode Q3 meets the base stage of NPN type triode Q2, described NPN
The grounded emitter of type audion Q3, described divider resistance R4 be connected to the anode of described stabilivolt D1 with
Between ground；
Switching tube conducting or cut-out motor supply access, when overvoltage occurs in power supply, switching tube is protected
Motor is from damage, and electric capacity C1, electric capacity C2 play filter action, and NPN type triode Q2 and NPN
Type audion Q3 plays the effect of amplifier tube.
5. motor as claimed in claim 4, it is characterised in that described switching tube uses positive-negative-positive three pole
Pipe Q1, the base stage of described PNP type triode Q1 is the control end of switching tube, described PNP type triode
The hot end of the current collection of Q1 extremely switching tube, the transmitting of described PNP type triode Q1 extremely switching tube
Cold end.
6. motor as claimed in claim 4, it is characterised in that described switching tube uses p-type metal-oxide-semiconductor
The control end that grid is switching tube of Q4, described p-type metal-oxide-semiconductor Q4, described p-type metal-oxide-semiconductor Q4's
Drain electrode is the hot end of switching tube, the cold end that source electrode is switching tube of described p-type metal-oxide-semiconductor Q4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210594572.8A CN103915822B (en) | 2012-12-31 | A kind of motor and overvoltage crowbar thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210594572.8A CN103915822B (en) | 2012-12-31 | A kind of motor and overvoltage crowbar thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103915822A CN103915822A (en) | 2014-07-09 |
| CN103915822B true CN103915822B (en) | 2016-11-30 |
Family
ID=
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6519126B2 (en) * | 2000-03-17 | 2003-02-11 | Alps Electric Co., Ltd. | Anti-reverse connection circuit for power supply |
| CN101867168A (en) * | 2010-05-21 | 2010-10-20 | 海洋王照明科技股份有限公司 | Power protecting circuit and LED lamp |
| CN102801137A (en) * | 2011-05-25 | 2012-11-28 | 海洋王照明科技股份有限公司 | Light-emitting diode (LED) short circuit protection circuit and light fitting |
| CN102833917A (en) * | 2012-08-29 | 2012-12-19 | 深圳创维－Rgb电子有限公司 | LED constant-current control circuit and LED liquid crystal television |
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6519126B2 (en) * | 2000-03-17 | 2003-02-11 | Alps Electric Co., Ltd. | Anti-reverse connection circuit for power supply |
| CN101867168A (en) * | 2010-05-21 | 2010-10-20 | 海洋王照明科技股份有限公司 | Power protecting circuit and LED lamp |
| CN102801137A (en) * | 2011-05-25 | 2012-11-28 | 海洋王照明科技股份有限公司 | Light-emitting diode (LED) short circuit protection circuit and light fitting |
| CN102833917A (en) * | 2012-08-29 | 2012-12-19 | 深圳创维－Rgb电子有限公司 | LED constant-current control circuit and LED liquid crystal television |
Non-Patent Citations (1)
| Title |
|---|
| 三相异步电机的电源断相、过压、欠压保护电路;徐诩保等;《实验室科学》;20060430(第2期);第107-108页 * |
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|---|---|---|---|
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161130 Termination date: 20181231 |