CN205725487U - A kind of electric sewer power circuit - Google Patents
A kind of electric sewer power circuit Download PDFInfo
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- CN205725487U CN205725487U CN201620699549.9U CN201620699549U CN205725487U CN 205725487 U CN205725487 U CN 205725487U CN 201620699549 U CN201620699549 U CN 201620699549U CN 205725487 U CN205725487 U CN 205725487U
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- 230000005611 electricity Effects 0.000 claims abstract description 9
- 230000008878 coupling Effects 0.000 claims description 28
- 238000010168 coupling process Methods 0.000 claims description 28
- 238000005859 coupling reaction Methods 0.000 claims description 28
- 239000003990 capacitor Substances 0.000 claims description 22
- 238000002955 isolation Methods 0.000 claims description 17
- 239000003381 stabilizer Substances 0.000 claims description 13
- 239000000919 ceramic Substances 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 15
- 230000006872 improvement Effects 0.000 description 10
- 238000009958 sewing Methods 0.000 description 9
- 230000035939 shock Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 230000005856 abnormality Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 230000036632 reaction speed Effects 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
Abstract
The utility model discloses a kind of electric sewer power circuit, comprising: rectification circuit, this rectification circuit has input and output, and its input is coupled to outside mains supply, and output exports dc source；Switching power circuit, this switching power circuit has input and output, and its input is coupled to the output of rectification circuit, exports low-tension supply after modulating the dc source of rectification circuit output end.Electric sewer power circuit of the present utility model, just effectively outside mains electricity can be transformed into direct current by the setting of rectification circuit, and by the setting of switching power circuit, it is possible to effective realization exports to the effect of each chip power supply in driver after being depressured direct current.
Description
Technical field
The utility model relates to a kind of electric sewer, more particularly to a kind of electric sewer power 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 driver and electricity
Machine is powered, it is necessary to arranges a power circuit and is powered, and existing power circuit is by outside mains electricity
It is converted into direct current, by direct current drive motor, will conveying after then carrying out being depressured to direct current by reduction voltage circuit again
Each chip in driver, driving motor preferably to operate, and the reduction voltage circuit mode of existing employing is exactly
Connecting what multiple resistance realized on DC circuit, so during step-down, resistance will consume substantial amounts of work(
Rate, thus the increase of the power consumption of electric sewer can be caused, add the use cost of electric sewer.
Utility model content
The deficiency existing for prior art, the purpose of this utility model is to provide one can avoid electric sewer
The electric sewer power circuit of increase of power consumption.
For achieving the above object, the utility model provides following technical scheme: a kind of electric sewer power circuit, bag
Include:
Rectification circuit, this rectification circuit has input and output, and its input is coupled to outside mains supply, output
End output dc source；
Switching power circuit, this switching power circuit has input and output, and its input is coupled to rectification circuit
Output, with output low-tension supply after the dc source of rectification circuit output end is modulated.
As further improvement of the utility model, described rectification circuit includes rectifier bridge chip and filter circuit, described
Rectifier bridge chip has input and output, and its input is coupled to outside civil power, and output is defeated after being coupled to filter circuit
Going out, being coupled with anti-impact circuit between its output and filter circuit, described anti-impact circuit circuit includes:
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
Making signal, 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 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 (a311) is G5LA-1A-DC12V, the model of switch triode Q1
It is 8050.
As further improvement of the utility model, described switching power circuit includes PWM chip, power transformer and anti-
Current feed circuit, described power transformer has input and output, and its input is coupled to external power source, and output exports direct current
Power supply, described power transformer and feedback circuit all couple with PWM chip, and described feedback circuit includes:
Reference voltage circuit, this reference voltage circuit has input and output, the input of described reference voltage circuit
End is coupled to the output of power transformer, and output output reference voltage, the output of described reference voltage circuit is coupled to
The output of power transformer；
Isolation circuit, this isolation circuit has input and output, and the input of described isolation circuit is coupled to benchmark
The output of potential circuit, the output of described isolation circuit is coupled to PWM chip.
As further improvement of the utility model, described reference voltage circuit includes:
Voltage-stabiliser tube A1, this voltage-stabiliser tube A1 have the first end, the second end and control end, and described first end is coupled to isolate circuit
Input, and be coupled to the output of power transformer after being also coupled to resistance, the second end ground connection, control end is coupled with resistance
After be coupled to the output of power transformer, be also coupled to ground connection after resistance, and be also coupled to a parallel with one another resistance and
It is coupled to the first end after one electric capacity.
As further improvement of the utility model, described isolation circuit includes:
Power circuit, this power circuit is coupled between PWM chip and the output of power transformer to supply to PWM chip
Electricity；
Light coupling relay U2, this light coupling relay U2 has input and output, the input of described light coupling relay U2
End is coupled to the output of reference voltage circuit, and output is coupled to PWM chip, and wherein, output is further coupled to power circuit.
As further improvement of the utility model, described power circuit includes:
The anode of diode D7, this diode D7 is coupled to the output of power transformer, and negative electrode is coupled to PWM chip；
Wherein, negative electrode is coupled to the output of light coupling relay U2 after being also coupled to resistance；
Filter circuit 2, this filter circuit 2 includes filter capacitor C26 and filter capacitor C24, described filter capacitor C26 and filter
Electric capacity C24 is parallel with one another for ripple, and is connected in parallel between negative electrode and the PWM chip of diode D7.
As further improvement of the utility model, described PWM chip is the power supply chip that model is VIPER12, this electricity
Source chip has output pin, power pins and feedback pin, and described power pins is coupled to the negative electrode of diode D7, and output is drawn
Pin is coupled to the input of power transformer, and feedback pin is coupled to the output of light coupling relay U2, described power transformer
Model be EE16, the model of described voltage-stabiliser tube A1 is TL431, and the model of described light coupling relay U2 is EL357C, described two
The model of pole pipe D7 is LL4148, and filter capacitor C26 is 104 ceramic disc capacitors, and the capacity of filter capacitor C24 is 22uF/50V.
The beneficial effects of the utility model, by the setting of rectification circuit, it is possible to effectively inputted by its input
Outside mains supply, exports dc source after being then passed through rectification, and by the setting of switching power circuit, it is possible to effectively
Realization by rectification circuit output dc source step-down after output, owing to the operation principle of switching power circuit is to pass through work(
Rate is equal to be achieved, thus with the use of electric sewer here with the reduction power attenuation of maximum efficiency, can be reduced
Cost.
Brief description
Fig. 1 is the circuit diagram of rectification circuit of the present utility model；
Fig. 2 is the circuit diagram of switching power 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.
Referring to figs. 1 through shown in 2, a kind of electric sewer power circuit of the present embodiment, comprising:
Rectification circuit a, this rectification circuit a have input and output, and its input is coupled to outside mains supply, defeated
Go out end output dc source；
Switching power circuit b, this switching power circuit b have input and output, and its input is coupled to rectified current
The output of road a, exports low-tension supply after modulating the dc source of rectification circuit a output, in power circuit work
During, the input that the alternating current of outside civil power first passes through rectification circuit a enters in rectification circuit a, through rectified current
The setting of road a, it is possible to the AC rectification of civil power is become direct current, then direct current exports from output.
As improved a kind of detailed description of the invention, described rectification circuit a includes rectifier bridge chip a1 and filter circuit a2,
Described rectifier bridge chip a1 has input and output, and its input is coupled to outside civil power, and output is coupled to filtered electrical
Export after the a2 of road, between its output and filter circuit a2, be coupled with anti-impact circuit a3, described anti-impact circuit a3 circuit bag
Include:
One end of surge resistance RT1, described surge resistance RT1 is coupled to the output of rectifier bridge chip a1, another
End is coupled to filter circuit a2；
Short circuit current a31, this short circuit current a31 is in parallel with surge resistance RT1, after rectifier bridge chip a1 output is stablized
By 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 whole
In the input of stream bridge chip a1, by rectifier bridge chip a1, alternating current is converted into DC current from rectifier bridge chip a1's
Output exports high-voltage direct current, and then DC current is flowed in filter circuit a2, after filtering circuit a2 filter action
After, the power supply just effectively stablizing rectifier bridge chip a1 outputs, during DC power supply circuit work, and rectifier bridge core
Piece a1 at the beginning when, its output will occur dash current, and dash current will pass through surge resistance RT1, erosion control
Hit resistance RT1 and will carry out the effect of a buffering, so just can effectively avoid the series of problems that dash current causes,
And by the setting of short circuit current a31, it is possible to the effective dash current at rectifier bridge chip a1 is stably later by protecting against shock
Resistance RT1 is shorted out, the problem that so just can effectively avoid damage after the working long hours of surge resistance RT1, together
When it also avoid the lifting of power consumption.
As improved a kind of detailed description of the invention, described short circuit current a31 includes:
Short-circuit relay a311, this short-circuit relay a311 have switch sections and an electromagnet portion, described switch sections with
Surge resistance RT1 is in parallel, opening and disconnected of electromagnet portion control switch sections；
Drive circuit a312, this drive circuit a312 are coupled to short-circuit relay a311, in order to short-circuit relay a311
Electromagnet portion provide actuating signal, described drive circuit a312 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 electromagnetism portion of short-circuit relay a311
It is coupled to power supply, by the setting of short-circuit relay a311, it is possible to realize the effect of the big electric current of Small current control after Fen,
Thus just can realize that the control chip control short-circuit relay a311 of driver is by the mating reaction of drive circuit a312
The no effect by surge resistance RT1 short circuit, owing to the driving voltage of general relay is all higher, and control chip output
Signal voltage is not enough to drive relay, thus by the setting of switch triode Q1, it is possible to effectively realize control chip
Output signal strengthen drive relay effect.
As improved a kind of detailed description of the invention, the model of described rectifier bridge chip a1 is BRIDGE-B, protecting against shock electricity
The resistance of resistance RT1 is 510 Ω/3W, and the model of short-circuit relay a311 is G5LA-1A-DC12V, the model of switch triode Q1
Being 8050, BRIDGE-B chip has good rectification characteristic, and it is primarily directed to carry out rectification in mains supply 220V, because of
And with here can be well to realize the effect of rectification, the relay of G5LA-1A-DC12V, utilize 12V power supply just permissible
Effective driving, so avoiding the need for extra arranging a power circuit to drive it, 8050 triodes are normal on the market
The triode seen, convenient and with low cost with being used herein, the resistance of surge resistance RT1 is that 510 Ω/3W just can be fine
The effect realizing a protecting against shock, and power consumption is little.
As improved a kind of detailed description of the invention, described switching power circuit b includes PWM chip b1, power transformer
B2 and feedback circuit b3, described power transformer b2 have input and output, and its input is coupled to external power source, output
End output dc source, described power transformer b2 and feedback circuit b3 all couples with PWM chip b1, described feedback circuit b3 bag
Include:
Reference voltage circuit b31, this reference voltage circuit b31 have input and output, described reference voltage circuit
The input of b31 is coupled to the output of power transformer b2, output output reference voltage, described reference voltage circuit b31
Output be coupled to the output of power transformer b2；
Isolation circuit b32, this isolation circuit b32 has input and output, the input coupling of described isolation circuit b32
Being connected to the output of reference voltage circuit b31, the output of described isolation circuit b32 is coupled to PWM chip b1, by PWM core
Piece b1 and the mating reaction of power transformer b2, it is possible to effectively realize that external power source is converted into galvanic current source defeated
Go out, and by the setting of the reference voltage circuit b31 of feedback circuit b3, it is possible to effectively achieve one and supply voltage
The effect contrasting, so just can be good at judging now whether supply voltage is in abnormality, thus just can
Avoiding supply voltage feedback circuit b3 under normal variation to feed back to PWM chip b1 makes PWM chip b1 whole the asking of mistuning occur
Topic, simultaneously by isolating the setting of circuit b32, when reference voltage circuit b31 judges as supply voltage abnormality,
Feedback signal will send from reference voltage circuit b31, then into isolation circuit b32 in, through isolation circuit b32 every
From effect, filter the electrical Interference signal in signal, this makes it possible to preferably feed back to PWM chip b1.
As improved a kind of detailed description of the invention, described reference voltage circuit b31 includes:
Voltage-stabiliser tube A1, this voltage-stabiliser tube A1 have the first end, the second end and control end, and described first end is coupled to isolate circuit
The input of b32, and it is coupled to the output of power transformer b2 after being also coupled to resistance, the second end ground connection, control end couples
It is coupled to the output of power transformer b2 after having resistance, be also coupled to ground connection after resistance, and be also coupled to parallel with one another one
It is coupled to the first end, by the setting of voltage-stabiliser tube A1, it is possible to effectively provide out a benchmark after individual resistance and an electric capacity
Voltage, and the voltage-stabiliser tube A1 using in the present embodiment is TL431, so passing through arrangement above, will constitute an amplitude discriminator,
Whether effective qualification voltage magnitude now is normal.
As improved a kind of detailed description of the invention, described isolation circuit b32 includes:
Power circuit b321, this power circuit b321 are coupled between PWM chip b1 and the output of power transformer b2
To power to PWM chip b1；
Light coupling relay U2, this light coupling relay U2 has input and output, the input of described light coupling relay U2
End is coupled to the output of reference voltage circuit b31, and output is coupled to PWM chip b1, and wherein, output is further coupled to power supply
Circuit b321, by the setting of power circuit b321, it is possible to powers effectively to PWM chip b1, and passes through optocoupler relay
The setting of device U2, it is possible to effectively realize the effect of a Phototube Coupling, needs in the light coupling relay U2 course of work
One a reference value, thus just effectively can be supplied to mono-benchmark of light coupling relay U2 by supply voltage by arrangement above
It is worth.
As improved a kind of detailed description of the invention, described power circuit b321 includes:
The anode of diode D7, this diode D7 is coupled to the output of power transformer b2, and negative electrode is coupled to PWM chip
b1；Wherein, negative electrode is coupled to the output of light coupling relay U2 after being also coupled to resistance；
Filter circuit b3211, this filter circuit b3211 include filter capacitor C26 and filter capacitor C24, described filtered electrical
Hold C26 and filter capacitor C24 parallel with one another, and be connected in parallel between negative electrode and PWM chip b1 of diode D7, pass through filter circuit
The setting of the filter capacitor C26 in b3211 and filter capacitor C24, it is possible to effectively the power supply being input to PWM chip b1 is entered
One filter action of row so that power supply can preferably be powered for PWM chip b1.
As improved a kind of detailed description of the invention, described PWM chip b1 is the power supply chip that model is VIPER12, should
Power supply chip has output pin, power pins and feedback pin, and described power pins is coupled to the negative electrode of diode D7, output
Pin is coupled to the input of power transformer b2, and feedback pin is coupled to the output of light coupling relay U2, and described power supply becomes
The model of depressor b2 is EE16, and the model of described voltage-stabiliser tube A1 is TL431, and the model of described light coupling relay U2 is EL357C,
The model of described diode D7 is LL4148, and filter capacitor C26 is 104 ceramic disc capacitors, and the capacity of filter capacitor C24 is 22uF/
It is fast that 50V, VIPER12PWM chip b1 has reaction speed, and the effect of peripheral circuit simple in construction, the power consumption of itself is also simultaneously
Suitable is low, thus with the power consumption of whole switching power circuit here can be effectively reduced, real soon by its reaction speed
The voltage of existing Switching Power Supply output is more stable, and the power transformer of EE16 is to utilize the principle that power is equal to carry out transformation
Transformer, compact, thus with transformation effect here on the one hand can be realized, whole switch electricity on the other hand can be reduced
The volume in source, TL431 voltage-stabiliser tube is controlled voltage-stabiliser tube, and it is with low cost, compact, same in the effect achieving voltage stabilizing output
When, the volume of power circuit can also be avoided to increase, and be 104 ceramic disc capacitors by filter capacitor C26, the appearance of filter capacitor C24
Amount is 22uF/50V, it is possible to well realize the filter action of 15V so that it is power preferably to PWM chip b1.
In sum, electric sewer power circuit of the present utility model, by the setting of rectification circuit a, it is possible to have
The alternating current by outside mains supply of effect is converted into direct current, and by the setting of switching power circuit b, it is possible to will
The direct current of high pressure is converted into the direct current of low pressure, owing to the operation principle of switching power circuit b mainly passes through power-balance
Realize, thus with here can farthest reduce conversion consumption, decrease in prior art owing to step-down causes
Power consumption.
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. an electric sewer power circuit, it is characterised in that: include:
Rectification circuit (a), this rectification circuit (a) has input and output, and its input is coupled to outside mains supply, defeated
Go out end output dc source；
Switching power circuit (b), this switching power circuit (b) has input and output, and its input is coupled to rectified current
The output on road (a), exports low-tension supply after modulating the dc source of rectification circuit (a) output.
2. electric sewer power circuit according to claim 1, it is characterised in that: described rectification circuit (a) includes whole
Stream bridge chip (a1) and filter circuit (a2), described rectifier bridge chip (a1) has input and output, and its input couples
In outside civil power, output is coupled to filter circuit (a2) and exports afterwards, is coupled with anti-between its output and filter circuit (a2)
Impact circuit (a3), described anti-impact circuit (a3) circuit includes:
One end of surge resistance RT1, described surge resistance RT1 is coupled to the output of rectifier bridge chip (a1), the other end
It is coupled to filter circuit (a2)；
Short circuit current (a31), this short circuit current (a31) is in parallel with surge resistance RT1, when rectifier bridge chip (a1) output is stable
After by surge resistance RT1 short circuit.
3. electric sewer power circuit according to claim 2, it is characterised in that: described short circuit current (a31) includes:
Short-circuit relay (a311), this short-circuit relay (a311) has switch sections and an electromagnet portion, described switch sections with
Surge resistance RT1 is in parallel, opening and disconnected of electromagnet portion control switch sections；
Drive circuit (a312), this drive circuit (a312) is coupled to short-circuit relay (a311), in order to short-circuit relay
(a311) electromagnet portion provides actuating signal,
Described drive circuit (a312) 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, colelctor electrode is coupled to the electromagnet portion of short-circuit relay (a311)
After be coupled to power supply.
4. electric sewer power circuit according to claim 3, it is characterised in that: the type of described rectifier bridge chip (a1)
Number be BRIDGE-B, the resistance of surge resistance RT1 is 510 Ω/3W, and the model of short-circuit relay (a311) is G5LA-1A-
DC12V, the model of switch triode Q1 is 8050.
5. the electric sewer power circuit according to claim 1 or 2 or 3 or 4, it is characterised in that: described Switching Power Supply
Circuit (b) includes PWM chip (b1), power transformer (b2) and feedback circuit (b3), and described power transformer (b2) has defeated
Entering end and output, its input is coupled to external power source, and output exports dc source, described power transformer (b2) and instead
Current feed circuit (b3) all couples with PWM chip (b1), and described feedback circuit (b3) includes:
Reference voltage circuit (b31), this reference voltage circuit (b31) has input and output, described reference voltage circuit
(b31) input is coupled to the output of power transformer (b2), output output reference voltage, described reference voltage circuit
(b31) output is coupled to the output of power transformer (b2)；Isolation circuit (b32), this isolation circuit (b32) has defeated
Entering end and output, the input of described isolation circuit (b32) is coupled to the output of reference voltage circuit (b31), described every
Output from circuit (b32) is coupled to PWM chip (b1).
6. electric sewer power circuit according to claim 5, it is characterised in that: described reference voltage circuit (b31)
Including:
Voltage-stabiliser tube A1, this voltage-stabiliser tube A1 have the first end, the second end and control end, and described first end is coupled to isolate circuit
(b32) input, and it is coupled to the output of power transformer (b2) after being also coupled to resistance, the second end ground connection, control end
It is coupled to the output of power transformer (b2) after being coupled with resistance, be also coupled to ground connection after the resistance that resistance is 2K, and go back coupling
The resistance being connected to be serially connected is to be coupled to the first end after the resistance of 2K and electric capacity that capacitance is 104.
7. electric sewer power circuit according to claim 5, it is characterised in that: described isolation circuit (b32) includes:
Power circuit (b321), this power circuit (b321) is coupled to PWM chip (b1) and the output of power transformer (b2)
Between with to PWM chip (b1) power supply；
Light coupling relay U2, this light coupling relay U2 has input and output, the input coupling of described light coupling relay U2
Being connected to the output of reference voltage circuit (b31), output is coupled to PWM chip (b1), and wherein, output is further coupled to power supply
Circuit (b321).
8. electric sewer power circuit according to claim 6, it is characterised in that: described isolation circuit (b32) includes:
Power circuit (b321), this power circuit (b321) is coupled to PWM chip (b1) and the output of power transformer (b2)
Between with to PWM chip (b1) power supply；
Light coupling relay U2, this light coupling relay U2 has input and output, the input coupling of described light coupling relay U2
Being connected to the output of reference voltage circuit (b31), output is coupled to PWM chip (b1), and wherein, output is further coupled to power supply
Circuit (b321).
9. electric sewer power circuit according to claim 8, it is characterised in that: described power circuit (b321) wraps
Include:
The anode of diode D7, this diode D7 is coupled to the output of power transformer (b2), and negative electrode is coupled to PWM chip
(b1)；Wherein, negative electrode is coupled to the output of light coupling relay U2 after being also coupled to resistance；
Filter circuit (b3211), this filter circuit (b3211) includes filter capacitor C26 and filter capacitor C24, described filtered electrical
Hold C26 and filter capacitor C24 parallel with one another, and be connected in parallel between the negative electrode of diode D7 and PWM chip (b1).
10. electric sewer power circuit according to claim 9, it is characterised in that: described PWM chip (b1) is model
Being the power supply chip of VIPER12, this power supply chip has output pin, power pins and feedback pin, described power pins coupling
Being connected to the negative electrode of diode D7, output pin is coupled to the input of power transformer (b2), and feedback pin is coupled to optocoupler and continues
The output of electrical equipment U2, the model of described power transformer (b2) is EE16, and the model of described voltage-stabiliser tube A1 is TL431, described
The model of light coupling relay U2 is EL357C, and the model of described diode D7 is LL4148, and filter capacitor C26 is 104 ceramics electricity
Holding, the capacity of filter capacitor C24 is 22uF/50V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620699549.9U CN205725487U (en) | 2016-07-01 | 2016-07-01 | A kind of electric sewer power circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620699549.9U CN205725487U (en) | 2016-07-01 | 2016-07-01 | A kind of electric sewer power circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205725487U true CN205725487U (en) | 2016-11-23 |
Family
ID=57327312
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620699549.9U Active CN205725487U (en) | 2016-07-01 | 2016-07-01 | A kind of electric sewer power circuit |
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| Country | Link |
|---|---|
| CN (1) | CN205725487U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109687732A (en) * | 2019-01-25 | 2019-04-26 | 深圳市锐同技术有限公司 | A kind of capacitor step-down power supply with control function |
-
2016
- 2016-07-01 CN CN201620699549.9U patent/CN205725487U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109687732A (en) * | 2019-01-25 | 2019-04-26 | 深圳市锐同技术有限公司 | A kind of capacitor step-down power supply with control function |
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