CN205725488U - A kind of DC power supply circuit - Google Patents
A kind of DC power supply circuit Download PDFInfo
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- CN205725488U CN205725488U CN201620699629.4U CN201620699629U CN205725488U CN 205725488 U CN205725488 U CN 205725488U CN 201620699629 U CN201620699629 U CN 201620699629U CN 205725488 U CN205725488 U CN 205725488U
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- 239000003990 capacitor Substances 0.000 claims description 12
- 230000005611 electricity Effects 0.000 claims description 12
- 230000035939 shock Effects 0.000 claims description 6
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 description 17
- 238000009958 sewing Methods 0.000 description 10
- 230000003139 buffering effect Effects 0.000 description 4
- 230000003628 erosive effect Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004020 luminiscence type Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
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Abstract
The utility model discloses a kind of DC power supply circuit, including rectifier bridge chip and filter circuit, described rectifier bridge chip has input and output, its input is coupled to outside civil power, output is coupled to output after filter circuit, is coupled with anti-impact circuit between described output and filter circuit, and described anti-impact circuit circuit includes: surge resistance RT1, one end of described surge resistance RT1 is coupled to the output of rectifier bridge chip, and the other end is coupled to filter circuit；Short circuit current, this short circuit current is in parallel with surge resistance RT1, by surge resistance RT1 short circuit after the output of rectifier bridge chip is stablized.DC power supply circuit of the present utility model, setting by surge resistance RT1 and filter circuit, just effectively can access surge resistance RT1 when rectifier bridge chip is just switched on, pick out surge resistance RT1 after the output of rectifier bridge chip is stable, so just can avoid dash current, also avoid the increase of power consumption simultaneously and resistance damages.
Description
Technical field
The utility model relates to a kind of power supply, more particularly to a kind of DC power supply circuit.
Background technology
Application very extensive in weaving and clothes field for the sewing machine, when sewing clothes, occupies very heavy
The status wanted, by the use of sewing machine, can be greatly promoted the sewing efficiency of clothes, promotes work task efficiency, simultaneously
Also the darning work for family saves the substantial amounts of time.
Existing sewing machine mainly divides foot-propelled and electronic two kinds, and foot-propelled is by arranging a foot-propelled pedal below, then
Arrange a runner in the side of foot-propelled pedal, foot-propelled pedal drives runner by linkage, then on runner and sewing machine
Rotation wheel connected by belt, be achieved in people ride drive sewing machine effect, but foot-propelled sewing machine one carrys out volume
Can be very big, two come in use between long after, the pin of people will be very tired, so compared to electric sewer, foot-propelled wants difficulty to use
Many, and existing electric sewer is only merely and original foot-propelled lead agency is revised as driven by motor, although so keeping away
Having exempted from the problem that volume is big and pin is tired of foot-propelled sewing machine, existing electric sewer is in order to well give internal drive
Each chip and motor power, thus need often in driver, to arrange a dc source and Switching Power Supply, in work
In order to preferably sew in industry sewing machine, thus motor typically all uses three phase electric machine, thus is accomplished by outside
Civil power be converted into high voltage direct current, and existing rectification circuit, be all made up of rectifier bridge chip and filter capacitor, so
It when rectification circuit starts, is just easy to occur that output electric current increases suddenly the series of problems causing, if in rectification
The output of bridge chip adds a resistance, it is possible to prevent the unexpected increase of electric current, but resistance afterwards just continues energising
It is easily caused the damage of resistance, also add the power consumption of rectification circuit simultaneously.
Utility model content
The deficiency existing for prior art, the purpose of this utility model is to provide a kind of on the one hand can avoiding to export
Electric current increases suddenly the problem causing, and on the other hand avoids the DC power supply circuit that resistance damages and rectification circuit power consumption increases.
For achieving the above object, the utility model provides following technical scheme: a kind of DC power supply circuit, including rectification
Bridge chip and filter circuit, described rectifier bridge chip has input and output, and its input is coupled to outside civil power, output
End is coupled to output after filter circuit, it is characterised in that: it is coupled with anti-impact circuit, institute between described output and filter circuit
State anti-impact circuit circuit to include:
One end of surge resistance RT1, described surge resistance RT1 is coupled to the output of rectifier bridge chip, the other end
It is coupled to filter circuit；
Short circuit current, this short circuit current is in parallel with surge resistance RT1, by protecting against shock after the output of rectifier bridge chip is stablized
Resistance RT1 short circuit.
As further improvement of the utility model, described short circuit current includes:
Short-circuit relay, this short-circuit relay has switch sections and electromagnet portion, described switch sections and protecting against shock electricity
Resistance RT1 is in parallel, opening and disconnected of electromagnet portion control switch sections；
Drive circuit, this drive circuit is coupled to short-circuit relay, dynamic in order to provide to the electromagnet portion of short-circuit relay
Make signal.
As further improvement of the utility model, described drive circuit includes:
Switch triode Q1, the base stage of this switch triode Q1 is coupled to the control chip of driver after being coupled with resistance,
Grounded emitter, emitter stage is coupled to base stage after being also coupled to resistance, after colelctor electrode is coupled to the electromagnet portion of short-circuit relay
It is coupled to power supply.
As further improvement of the utility model, the electromagnet portion of described short-circuit relay is also parallel with protection diode
D11。
As further improvement of the utility model, the model of described rectifier bridge chip is BRIDGE-B, surge resistance
The resistance of RT1 is 510 Ω/3W, and the model of short-circuit relay is G5LA-1A-DC12V, and the model of switch triode Q1 is 8050,
The model of described protection diode D11 is 1N4148WS.
It as further improvement of the utility model, between described rectifier bridge chip and outside civil power, is coupled with protection electricity
Road, described protection circuit includes:
Fuse F1, one end of this fuse F1 is coupled to the live wire of outside civil power, and the other end is coupled to rectifier bridge chip
Input；
Piezo-resistance R4, one end of this piezo-resistance R4 is coupled to the zero line of outside civil power, and the other end is coupled to outside city
The live wire of electricity, described piezo-resistance R4 is also parallel with protection electric capacity C11；
Wherein the specification of fuse F1 is 10A/250V, and the specification of piezo-resistance R4 is 14K471, the type of protection electric capacity C11
Number be LE224/275VAC.
As further improvement of the utility model, described filter circuit includes:
Filter capacitor C10, one end of this filter capacitor C10 is coupled to the output output HVDC of rectifier bridge chip
Electricity, the other end is grounded, and the capacitance of described filter capacitor C10 is 330uF/450V.
As further improvement of the utility model, described filter circuit has been also coupled to indicating circuit, described indicating circuit
Including:
Light emitting diode D1, the anode of this light emitting diode D1 is coupled to erosion control after being coupled with two resistance being serially connected
Hit resistance RT1, minus earth.
The beneficial effects of the utility model, by the setting of rectifier bridge chip, it is possible to the effective alternating current to civil power
Carry out being rectified into DC current, and by the setting of filter circuit, it is possible to the effectively output output to rectifier bridge chip
Electric current be filtered effect, and by the setting of surge resistance RT1, it is possible to effectively realize one at rectifier bridge chip
When just having started output high-voltage direct current, play the effect of a buffering, and by the setting of short circuit current, it is possible to
After surge resistance RT1 buffering completes, by surge resistance RT1 short circuit, so just do not have surge resistance RT1 length
The problem that time service is easily damaged, it is to avoid because the problem that the power consumption causing adding surge resistance RT1 increases.
Brief description
Fig. 1 is the circuit diagram of DC power supply circuit of the present utility model.
Detailed description of the invention
Below in conjunction with the embodiment given by accompanying drawing, the utility model is described in further detail.
Shown in reference Fig. 1, a kind of DC power supply circuit of the present embodiment, including rectifier bridge chip 1 and filter circuit 2, institute
Stating rectifier bridge chip 1 and having input and output, its input is coupled to outside civil power, and output is coupled to filter circuit 2
Rear output, it is characterised in that: it is coupled with anti-impact circuit 3, described anti-impact circuit 3 between described output and filter circuit 2
Circuit includes:
One end of surge resistance RT1, described surge resistance RT1 is coupled to the output of rectifier bridge chip 1, the other end
It is coupled to filter circuit 2；
Short circuit current 31, this short circuit current 31 is in parallel with surge resistance RT1, will after rectifier bridge chip 1 output is stablized
Surge resistance RT1 short circuit, in the course of work of DC power supply circuit, the alternating current of outside civil power will flow into rectification
In the input of bridge chip 1, by rectifier bridge chip 1, alternating current is converted into the output from rectifier bridge chip 1 for the DC current
End output high-voltage direct current, then DC current is flowed in filter circuit 2, after filtering after circuit 2 filter action, just
The effective power supply stablizing rectifier bridge chip 1 outputs, and during DC power supply circuit work, rectifier bridge chip 1 one is opened
When beginning, its output will occur dash current, and dash current will pass through surge resistance RT1, surge resistance RT1
The effect of a buffering will be carried out, so just can effectively avoid the series of problems that dash current causes, and pass through short
The setting of road circuit 31, it is possible to effectively the dash current at rectifier bridge chip 1 is stably later short-circuit by surge resistance RT1
Fall, the problem that so just can effectively avoid damage after the working long hours of surge resistance RT1, it also avoid work(simultaneously
The lifting of consumption.
As improved a kind of detailed description of the invention, described short circuit current 31 includes:
Short-circuit relay 311, this short-circuit relay 311 has switch sections and an electromagnet portion, described switch sections with anti-
Impulse resistance RT1 is in parallel, opening and disconnected of electromagnet portion control switch sections；
Drive circuit 312, this drive circuit 312 is coupled to short-circuit relay 311, in order to the electricity to short-circuit relay 311
Magnetic part provides actuating signal, by the setting of short-circuit relay 311, it is possible to realize the effect of the big electric current of Small current control
Really, thus by the mating reaction of drive circuit 312 just can realize driver control chip control short-circuit relay 311 be
The no effect by surge resistance RT1 short circuit.
As improved a kind of detailed description of the invention, described drive circuit 312 includes:
Switch triode Q1, the base stage of this switch triode Q1 is coupled to the control chip of driver after being coupled with resistance,
Grounded emitter, emitter stage is coupled to base stage after being also coupled to resistance, colelctor electrode is coupled to the electromagnet portion of short-circuit relay 311
After be coupled to power supply, owing to the driving voltage of general relay is all higher, and control chip output signal voltage be not enough to drive
Motor type relay, thus by the setting of switch triode Q1, it is possible to effectively realize that the output signal of control chip strengthens and drive
The effect of motor type relay.
As improved a kind of detailed description of the invention, the electromagnet portion of described short-circuit relay 311 is also parallel with protection two
Pole pipe D11, owing to the electromagnet portion of relay is coil, thus just may require that the electric energy of release storage after action, thus
By protecting the setting of diode D11, it is possible to realize a control loop with electromagnet portion, so effective by power consumption
Fall.
As improved a kind of detailed description of the invention, the model of described rectifier bridge chip 1 is BRIDGE-B, surge resistance
The resistance of RT1 is 510 Ω/3W, and the model of short-circuit relay 311 is G5LA-1A-DC12V, and the model of switch triode Q1 is
8050, the model of described protection diode D11 is 1N4148WS, and BRIDGE-B chip has good rectification characteristic, and it is main
It is aimed at mains supply 220V and carry out rectification, thus with here can be well to realize the effect of rectification, G5LA-
The relay of 1A-DC12V, utilizes 12V power supply just can effectively drive, and so avoids the need for extra arranging a power supply electricity
Road drives it, and 8050 triodes are triodes common on the market, convenient and with low cost with being used herein, and
The diode of 1N4148WS model just can effectively realize guide functions, preferably falls power consumption, surge resistance
The resistance of RT1 is the effect that 510 Ω/3W just can well realize a protecting against shock, and power consumption is little.
It as improved a kind of detailed description of the invention, between described rectifier bridge chip 1 and outside civil power, is coupled with protection electricity
Road 4, described protection circuit 4 includes:
Fuse F1, one end of this fuse F1 is coupled to the live wire of outside civil power, and the other end is coupled to rectifier bridge chip 1
Input；
Piezo-resistance R4, one end of this piezo-resistance R4 is coupled to the zero line of outside civil power, and the other end is coupled to outside city
The live wire of electricity, described piezo-resistance R4 is also parallel with protection electric capacity C11, and wherein the specification of fuse F1 is 10A/250V, pressure-sensitive
The specification of resistance R4 is 14K471, and the model of protection electric capacity C11 is LE224/275VAC, by fuse F1 and piezo-resistance R4
Setting, specification is that 10A/250V fuse will fuse at 250V, and existing civil power is 220V, it is achieved that one very well
Waving interval, it is to avoid normal fluctuation and the problem of blown fuse, the specification of piezo-resistance R4 is that 14K471 can simultaneously
It is preferably applied to mains supply, so just can play the effect of a duplicate protection, and by protecting setting of electric capacity C11
Put, it is possible to by protecting the discharge and recharge effect of electric capacity C11, further enhance protected effect, and protect the model of electric capacity C11 to be
LE224/275VAC, it is possible to effectively realize the discharge and recharge effect of electric capacity.
As improved a kind of detailed description of the invention, described filter circuit 2 includes:
Filter capacitor C10, one end of this filter capacitor C10 is coupled to surge resistance RT1 output high voltage direct current, another
End ground connection, the capacitance of described filter capacitor C10 is 330uF/450V, by the setting of filter capacitor C10, it is possible to effectively real
The effect now filtering, and the capacitance by filter capacitor C10 is 330uF/450V owing to so just can effectively realize output
Voltage increase be 330V.
As improved a kind of detailed description of the invention, described filter circuit 2 has been also coupled to indicating circuit 5, described instruction electricity
Road 5 includes:
Light emitting diode D1, the anode of this light emitting diode D1 is coupled to erosion control after being coupled with two resistance being serially connected
Hitting resistance RT1, minus earth, by the setting of light emitting diode D1, it is possible to reached the effect of instruction by luminescence.
In sum, DC power supply circuit of the present utility model, by setting of surge resistance RT1 and short circuit current 31
Putting, it is possible to when rectifier bridge chip 1 is initially powered, surge resistance RT1 just effectively realizes an effect buffering, and
The initial stage that just be can be implemented in rectifier bridge chip 1 by the setting of short circuit current 31 has dash current to carry out cushioning effect, is delaying
Surge resistance RT1 is shorted out by punching later, it is to avoid surge resistance RT1 crosses the surge resistance causing that works long hours
The problem that RT1 damages, avoids the problem that power consumption increases simultaneously.
The above is only preferred embodiment of the present utility model, and protection domain of the present utility model is not limited merely to
Above-described embodiment, all technical schemes belonging under the utility model thinking belong to protection domain of the present utility model.Should refer to
Go out, for those skilled in the art, under the premise of without departing from the utility model principle some improvement and
Retouching, these improvements and modifications also should be regarded as protection domain of the present utility model.
Claims (10)
1. a DC power supply circuit, including rectifier bridge chip (1) and filter circuit (2), described rectifier bridge chip (1) has defeated
Entering end and output, its input is coupled to outside civil power, and output is coupled to filter circuit (2) and exports afterwards, it is characterised in that:
Being coupled with anti-impact circuit (3) between described output and filter circuit (2), described anti-impact circuit (3) circuit includes:
One end of surge resistance RT1, described surge resistance RT1 is coupled to the output of rectifier bridge chip (1), other end coupling
It is connected to filter circuit (2)；
Short circuit current (31), this short circuit current (31) is in parallel with surge resistance RT1, after rectifier bridge chip (1) output is stablized
By surge resistance RT1 short circuit.
2. DC power supply circuit according to claim 1, it is characterised in that: described short circuit current (31) includes:
Short-circuit relay (311), this short-circuit relay (311) has switch sections and an electromagnet portion, described switch sections with anti-
Impulse resistance RT1 is in parallel, opening and disconnected of electromagnet portion control switch sections；
Drive circuit (312), this drive circuit (312) is coupled to short-circuit relay (311), in order to short-circuit relay (311)
Electromagnet portion provide actuating signal.
3. DC power supply circuit according to claim 2, it is characterised in that: described drive circuit (312) includes:
Switch triode Q1, the base stage of this switch triode Q1 is coupled to the control chip of driver after being coupled with resistance, launch
Pole is grounded, and emitter stage is coupled to base stage after being also coupled to resistance, after colelctor electrode is coupled to the electromagnet portion of short-circuit relay (311)
It is coupled to power supply.
4. DC power supply circuit according to claim 3, it is characterised in that: the electromagnetism portion of described short-circuit relay (311)
Divide and be also parallel with protection diode D11.
5. DC power supply circuit according to claim 4, it is characterised in that: the model of described rectifier bridge chip (1) is
BRIDGE-B, the resistance of surge resistance RT1 is 510 Ω/3W, and the model of short-circuit relay (311) is G5LA-1A-DC12V,
The model of switch triode Q1 is 8050, and the model of described protection diode D11 is 1N4148WS.
6. the DC power supply circuit according to claim 1 or 2 or 3 or 4 or 5, it is characterised in that: described rectifier bridge chip
(1) and being coupled with protection circuit (4) between outside civil power, described protection circuit (4) includes:
Fuse F1, one end of this fuse F1 is coupled to the live wire of outside civil power, and the other end is coupled to rectifier bridge chip (1)
Input；
Piezo-resistance R4, one end of this piezo-resistance R4 is coupled to the zero line of outside civil power, and the other end is coupled to outside civil power
Live wire, described piezo-resistance R4 is also parallel with protection electric capacity C11；
Wherein the specification of fuse F1 is 10A/250V, and the specification of piezo-resistance R4 is 14K471, and the model of protection electric capacity C11 is
LE224/275VAC。
7. the DC power supply circuit according to claim 1 or 2 or 3 or 4 or 5, it is characterised in that: described filter circuit (2)
Including:
Filter capacitor C10, one end of this filter capacitor C10 is coupled to the output output high voltage direct current of rectifier bridge chip (1),
The other end is grounded, and the capacitance of described filter capacitor C10 is 330uF/450V.
8. the DC power supply circuit according to claim 1 or 2 or 3 or 4 or 5, it is characterised in that: described filter circuit (2)
Being also coupled to indicating circuit (5), described indicating circuit (5) includes:
Light emitting diode D1, the anode of this light emitting diode D1 is coupled to protecting against shock electricity after being coupled with two resistance being serially connected
Resistance RT1, minus earth.
9. DC power supply circuit according to claim 6, it is characterised in that: described filter circuit (2) has been also coupled to instruction
Circuit (5), described indicating circuit (5) includes:
Light emitting diode D1, the anode of this light emitting diode D1 is coupled to protecting against shock electricity after being coupled with two resistance being serially connected
Resistance RT1, minus earth.
10. DC power supply circuit according to claim 7, it is characterised in that: described filter circuit (2) has been also coupled to instruction
Circuit (5), described indicating circuit (5) includes:
Light emitting diode D1, the anode of this light emitting diode D1 is coupled to protecting against shock electricity after being coupled with two resistance being serially connected
Resistance RT1, minus earth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620699629.4U CN205725488U (en) | 2016-07-01 | 2016-07-01 | A kind of DC power supply circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620699629.4U CN205725488U (en) | 2016-07-01 | 2016-07-01 | A kind of DC power supply circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205725488U true CN205725488U (en) | 2016-11-23 |
Family
ID=57327372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620699629.4U Active CN205725488U (en) | 2016-07-01 | 2016-07-01 | A kind of DC power supply circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205725488U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112865507A (en) * | 2019-11-28 | 2021-05-28 | 广东美的制冷设备有限公司 | Power grid impact prevention device and air conditioner |
-
2016
- 2016-07-01 CN CN201620699629.4U patent/CN205725488U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112865507A (en) * | 2019-11-28 | 2021-05-28 | 广东美的制冷设备有限公司 | Power grid impact prevention device and air conditioner |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 325011 Zhejiang city of Wenzhou Province Economic and Technological Development Zone, Luo Road No. 150 four floor Patentee after: Zhejiang Yida Technology Co., Ltd. Address before: 302, building 325000, building three, building 2, zone 10, hi tech Industrial Park, Wenzhou, Zhejiang, Patentee before: WENZHOU YESTAR SCIENCE & TECHNOLOGY CO., LTD. |
|
| CP03 | Change of name, title or address | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: DC power source circuit Effective date of registration: 20180420 Granted publication date: 20161123 Pledgee: China Co truction Bank Corp Wenzhou economic and Technological Development Zone sub branch Pledgor: Zhejiang Yida Technology Co., Ltd. Registration number: 2018330000085 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20190507 Granted publication date: 20161123 Pledgee: China Co truction Bank Corp Wenzhou economic and Technological Development Zone sub branch Pledgor: Zhejiang Yida Technology Co., Ltd. Registration number: 2018330000085 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: DC power source circuit Effective date of registration: 20190522 Granted publication date: 20161123 Pledgee: Bank Of Wenzhou Pledgor: Zhejiang Yida Technology Co., Ltd. Registration number: 2019330000134 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20200818 Granted publication date: 20161123 Pledgee: Bank Of Wenzhou Pledgor: ZHEJIANG YIDA TECHNOLOGY Co.,Ltd. Registration number: 2019330000134 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A DC power supply circuit Effective date of registration: 20200819 Granted publication date: 20161123 Pledgee: Bank Of Wenzhou Pledgor: ZHEJIANG YIDA TECHNOLOGY Co.,Ltd. Registration number: Y2020330000623 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20210621 Granted publication date: 20161123 Pledgee: Bank Of Wenzhou Pledgor: ZHEJIANG YIDA TECHNOLOGY Co.,Ltd. Registration number: Y2020330000623 |