CN107968553A - A kind of adjustable voltage-stabilizing circuit system with anti-lightning strike anti-electromagnetic interference - Google Patents
A kind of adjustable voltage-stabilizing circuit system with anti-lightning strike anti-electromagnetic interference Download PDFInfo
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- CN107968553A CN107968553A CN201711320887.2A CN201711320887A CN107968553A CN 107968553 A CN107968553 A CN 107968553A CN 201711320887 A CN201711320887 A CN 201711320887A CN 107968553 A CN107968553 A CN 107968553A
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- electromagnetic interference
- inductance
- output terminal
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/14—Arrangements for reducing ripples from dc input or output
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/44—Circuits or arrangements for compensating for electromagnetic interference in converters or inverters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/217—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M7/219—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only in a bridge configuration
Abstract
The invention discloses a kind of adjustable voltage-stabilizing circuit system with anti-lightning strike anti-electromagnetic interference, filter circuit and adjustable regulator circuit are set after rectification circuit, rectification circuit can be exported to the direct current progress ripple containing ripple by filter circuit to filter out, then adjustable regulator circuit carries out voltage stabilizing processing, export D.C. regulated power supply, required DC power supply is provided for subsequent conditioning circuit, total has the characteristics that design is reasonable, science is practical, is provided with lightning prevention circuit, electromagnetic interference filter circuit, rectification circuit, filter circuit and adjustable regulator circuit；Adjustable regulator circuit is provided with voltage stabilizing chip UI, potentiometer W1, resistance R4 and capacitance C8, the input pin of voltage stabilizing chip UI is connected on the output terminal of filter circuit, the ADJ feet of voltage stabilizing chip UI are grounded by potentiometer W1, resistance R4 is connected between the ADJ feet of voltage stabilizing chip UI and output pin, and the capacitance C8 is connected in parallel on the output terminal as adjustable regulator circuit between the output pin and ground of voltage stabilizing chip UI.
Description
Technical field
The present invention relates to the fields such as power technology, are a kind of adjustable steady with anti-lightning strike anti-electromagnetic interference specifically
Volt circuit system.
Background technology
Power supply is the device that power is provided to electronic equipment, also referred to as power supply unit, it provides all components in computer
Required electric energy.Whether the size of power, electric current and voltage are stablized, and by the working performance for directly affecting computer and make
Use the service life.
Switching Power Supply is to utilize modern power electronics technology, the time ratio that controlling switch pipe turns on and off, and remains steady
Determine a kind of power supply of output voltage, Switching Power Supply is generally by pulse width modulation（PWM）IC and MOSFET is controlled to form.With electricity
The development and innovation of power electronic technology so that switch power technology is also innovated constantly.At present, Switching Power Supply is with small-sized, light
Amount and efficient feature are widely used almost all of electronic equipment, are that current electronics and information industry rapid development is indispensable
A kind of few power mode.
Switching Power Supply product is widely used in industrial automatic control, military industry equipment, research equipment, LED illumination, industry control are set
Standby, communication apparatus, power equipment, instrument and meter, Medical Devices, semiconductor refrigerating heating, air purifier, electronic refrigerator, liquid
Crystal display, LED lamp, communication apparatus, audio-visual products, safety monitoring, LED light bag, computer housing, digital product and instrument class
Deng field.
Pulse width modulation（PWM）It is a kind of non-come what is be controlled to analog circuit using the numeral output of microprocessor
Normal effective technology, is widely used in from measurement, many fields to communicate to Power Control with conversion.
Pulse width modulation is a kind of analog control mode, its according to the change of respective loads come modulation transistor base stage or
The biasing of metal-oxide-semiconductor grid, to realize the change of transistor or metal-oxide-semiconductor ON time, so as to fulfill switching power supply output
Change.This mode can be such that the output voltage of power supply is kept constant in operation conditions change, be the numeral using microprocessor
A kind of very effective technology that signal is controlled analog circuit.
The advantages of PWM control technologies are simple with its control, and flexibly and dynamic response is good and to become Power Electronic Technique most wide
The control mode of general application, and the hot spot of people's research.Since the development of current science and technology is without between subject
Boundary, with reference to modern control theory thought or realize resonance free ripple switching technique will become PWM control technologies develop master
Want one of direction.Its according to the change of respective loads come the biasing of modulation transistor base stage or metal-oxide-semiconductor grid, to realize transistor
Or the change of metal-oxide-semiconductor ON time, so as to fulfill the change of switching power supply output.This mode can make the output electricity of power supply
Kept constant when being pressed in operation conditions change, be analog circuit is controlled using the digital signal of microprocessor it is a kind of non-
Normal effective technology.
With the development of electronic technology, there are a variety of PWM technologies, including：Phase voltage control PWM, pulsewidth PWM
Method, random PWM, SPWM methods, line voltage control PWM etc., and the pulsewidth PWM methods used in nickel-hydrogen battery smart charger, it
It is using the spike train that each pulse width is equal as PWM waveform, arteries and veins can be changed with frequency modulation by varying the cycle of spike train
The width or duty cycle of punching can be such that voltage changes with frequency coordination with pressure regulation using suitable control method.Tune can be passed through
The cycle of whole PWM, the duty cycle of PWM and achieve the purpose that control charging current.
Pulsewidth modulation（PWM）Basic principle：Control mode is exactly that the break-make of inverter circuit switching device is controlled, and is made
Output terminal obtains a series of equal pulse of amplitudes, and sine wave or required waveform are replaced with these pulses.Namely exist
Multiple pulses are produced in the half period of output waveform, the threshold voltage that waits for making each pulse is sinusoidal waveform, and the output obtained is put down
Sliding and low-order harmonic is few.The width of each pulse is modulated by certain rule, you can change inverter circuit output voltage
Size, can also change output frequency.
The content of the invention
It is an object of the invention to provide a kind of adjustable voltage-stabilizing circuit system with anti-lightning strike anti-electromagnetic interference, in rectification
Filter circuit and adjustable regulator circuit are set after circuit, rectification circuit can be exported by filter circuit and contain the straight of ripple
Galvanic electricity carries out ripple and filters out, and reaches all（It is or as complete as possible）The effect of ripple voltage is filtered out, is provided for adjustable regulator circuit
Ripple disturbs DC power supply as small as possible, and the direct current after ripple filters out processing will be carried out steady using adjustable regulator circuit
Pressure processing, then can the adjustable D.C. regulated power supply of output voltage, required DC power supply is provided for subsequent conditioning circuit, is entirely tied
Structure has the characteristics that design is reasonable, science is practical.
The present invention is achieved through the following technical solutions：A kind of adjustable regulator circuit system with anti-lightning strike anti-electromagnetic interference
System, is provided with lightning prevention circuit, electromagnetic interference filter circuit, rectification circuit, filter circuit and adjustable regulator circuit, the lightning protection
Hit the input terminal connection alternating current of circuit, the input terminal of the output terminal connection electromagnetic interference filter circuit of lightning prevention circuit, electromagnetism
The input terminal of the output terminal connection rectification circuit of interference filter circuit, the input of the output terminal connection filter circuit of rectification circuit
End, the output terminal of filter circuit connect the input terminal of adjustable regulator circuit；The adjustable regulator circuit be provided with voltage stabilizing chip UI,
Potentiometer W1, resistance R4 and capacitance C8, the input pin of voltage stabilizing chip UI are connected on the output terminal of filter circuit, voltage stabilizing chip UI
ADJ feet be grounded by potentiometer W1, resistance R4 is connected between the ADJ feet of voltage stabilizing chip UI and output pin, the capacitance C8
It is connected in parallel on the output terminal as adjustable regulator circuit between the output pin and ground of voltage stabilizing chip UI.
Further is that the present invention is better achieved, especially using following setting structures：The filter circuit includes resistance
R3, capacitance C5, capacitance C6, capacitance C5, resistance R3 and capacitance C6 are serially connected to form RC pi type filters, and one of capacitance
It is connected as input terminal with the output terminal of rectification circuit, other in which capacitance is connected to voltage stabilizing chip UI's as output terminal
Between input pin and ground.
Further is that the present invention is better achieved, especially using following setting structures：The electromagnetic interference filter circuit
Including capacitance C1, common mode inductance L1, isolation capacitance, capacitance C4, resistance R1, resistance R2 and inductance L2, capacitance C1 is done as electromagnetism
The input terminal for disturbing filter circuit is connected in parallel on the input terminal of common mode inductance L1, and resistance R1 is serially connected with resistance R2, and mutually string
The resistance R1 and resistance R2 of connection and capacitance C4 are all connected in parallel on the output terminal of common mode inductance L1, two output terminals of common mode inductance L1
All it is grounded by isolation capacitance, first output terminal of common mode inductance L1 passes through first input of inductance L2 connection rectification circuits
End, second output terminal of common mode inductance L1 are connected with second input terminal of rectification circuit；Isolation capacitance ground terminal with
Isolated between the output ground terminal of rectification circuit by capacitance C7.
Further is that the present invention is better achieved, especially using following setting structures：The isolation capacitance includes mutual
The capacitance C2 and capacitance C3 of series connection, and the capacitance C2 and capacitance C3 that are serially connected are connected in parallel on the output terminal of common mode inductance L1, electricity
Hold the connects end altogether ground connection of C2 and capacitance C3（Preferably, inductance L1A is grounded by capacitance C2, and inductance L1B is grounded by capacitance C3）,
And the connects end altogether of capacitance C2 and capacitance C3 between capacitance C7 and the output ground terminal of rectification circuit by isolating.
Further is that the present invention is better achieved, especially using following setting structures：The common mode inductance L1 includes electricity
Feel L1A and inductance L1B, the input terminal of inductance L1A is connected to the output terminal of lightning prevention circuit with the input terminal of inductance L1B
On, the non-inductance L2 connections of the output terminal connection rectification circuit input end of output terminal connection the inductance L2, inductance L1B of inductance L1A
End.
Further is that the present invention is better achieved, especially using following setting structures：The second of the common mode inductance L1
A output terminal also passes through second input terminal of thermistor RT1 connection rectification circuits（The output terminal of inductance L1B passes through temperature-sensitive electricity
Hinder the non-inductance L2 connecting pins of RT1 connection rectification circuit input ends）.
Further is that the present invention is better achieved, especially using following setting structures：The lightning prevention circuit includes three
Bar is serially connected formed protection circuit and discharge tube FDG, two of which protection by a protective tube and a varistor
Circuit is serially connected and is connected between the firewire of exchange and zero curve, and passes through discharge tube at the two bar protective circuits connects end altogether
FDG is grounded（Isolation capacitance ground terminal）；The protective tube of last bar protective circuit is connected to firewire/or zero curve and is filtered with electromagnetic interference
On the one of input terminal of wave circuit, the varistor of last bar protective circuit is connected in parallel on the defeated of electromagnetic interference filter circuit
Enter on end（The input terminal of inductance L1A and the input terminal of inductance L1B）.
Preferable lightning prevention circuit includes protective tube F1, protective tube F2, protective tube F3, varistor MOV1, varistor
MOV2, varistor MOV3, protective tube F2, varistor MOV1, varistor MOV2 and protective tube F3 are serially connected, and mutually
Protective tube F2, varistor MOV1, varistor MOV2 and protective tube F3 after series connection are connected between firewire and zero curve, insurance
One end of pipe F1 is connected with firewire/or zero curve, the one of input of other end access electromagnetic interference filter circuit of protective tube F1
End, varistor MOV3 are connected in parallel on the input terminal of electromagnetic interference filter circuit.
Further is that the present invention is better achieved, especially using following setting structures：The capacitance C5 is filtered as RC π types
The input terminal of ripple device, output terminals of the capacitance C6 as RC pi type filters.Preferable capacitance C5 and capacitance C6 is all using electrolysis electricity
Hold, and the cathode of capacitance C5 and capacitance C6 are connected with mat R3.
Further is that the present invention is better achieved, especially using following setting structures：The rectification circuit uses full-bridge
Rectistack（BRG1）.
Further is that the present invention is better achieved, especially using following setting structures：The voltage stabilizing chip UI uses three
Hold voltage-stablizer LM317.
Compared with prior art, the present invention haing the following advantages and beneficial effect：
The present invention sets filter circuit and adjustable regulator circuit after rectification circuit, can be by rectification circuit by filter circuit
Export the progress ripple of the direct current containing ripple to filter out, reach all（It is or as complete as possible）The effect of ripple voltage is filtered out, is
Adjustable regulator circuit provides ripple and disturbs DC power supply as small as possible, and the direct current after ripple filters out processing will utilize can
Adjust regulator circuit to carry out voltage stabilizing processing, then can the adjustable D.C. regulated power supply of output voltage, provide for subsequent conditioning circuit needed for
DC power supply, total have the characteristics that design rationally, science it is practical.
AC deposition can be effectively isolated by the present invention with direct current using capacitance C7, avoid both from directly being formed dry
Disturb, influence the job stability of whole circuit.
The present invention has the adjustable regulator circuit that LM317 is built, and can export a variety of required DC voltage-stabilizing electricity.
High-pressure energy can be consumed or will directly prevented when being struck by lightning by the lightning prevention circuit designed by the present invention
Thunder strike circuit and the circuit of rear class disconnect, and avoid the chain of circuits of rear class from being damaged.
Electromagnetic interference filter circuit designed by the present invention can carry out the electromagnetic noise and noise signal of input power
Suppress, prevent to power supply disturbance, while be also prevented from the high frequency spurs that power supply produces in itself and power grid is disturbed.
Thermistor RT1 set by the present invention can effectively prevent surge current.
The filter circuit of the present invention is built using π type RC filter circuits so that it can obtain more preferable filtering characteristic, energy
Enough ripple voltages by the direct current of rectification output filter out（Or filter out completely as far as possible）, ripple interference is provided for subsequent conditioning circuit
DC power supply as small as possible.
Brief description of the drawings
Fig. 1 is circuit diagram of the present invention.
Embodiment
The present invention is described in further detail with reference to embodiment, but the implementation of the present invention is not limited to this.
To make the purpose, technical scheme and advantage of embodiment of the present invention clearer, implement below in conjunction with the present invention
Attached drawing in mode, is clearly and completely described the technical solution in embodiment of the present invention, it is clear that described reality
The mode of applying is a part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, ability
The every other embodiment that domain those of ordinary skill is obtained without creative efforts, belongs to the present invention
The scope of protection.Therefore, below the detailed description of the embodiments of the present invention to providing in the accompanying drawings be not intended to limit will
The scope of the present invention of protection is sought, but is merely representative of the selected embodiment of the present invention.Based on the embodiment in the present invention,
The every other embodiment that those of ordinary skill in the art are obtained without creative efforts, belongs to this
Invent the scope of protection.
In the description of the present invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width
Degree ", " thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer ",
The orientation or position relationship of the instructions such as " clockwise ", " counterclockwise " be based on orientation shown in the drawings or position relationship, be only for
Easy to the description present invention and simplify description, rather than instruction or imply that signified equipment or element there must be specific side
Position, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are only used for description purpose, and it is not intended that instruction or hint relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can be expressed or
Implicitly include one or more this feature.In the description of the present invention, " multiple " are meant that two or more,
Unless otherwise specifically defined.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integrally；Can be machinery
Connection or electrical connection；It can be directly connected, can also be indirectly connected by intermediary, can be two elements
Internal connection or the interaction relationship of two elements.For the ordinary skill in the art, can be according to specific
Situation understands the concrete meaning of above-mentioned term in the present invention.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature it " on " or it " under "
Can directly it be contacted including the first and second features, it is not directly to contact but pass through it that can also include the first and second features
Between other characterisation contact.Moreover, fisrt feature second feature " on ", " top " and " above " to include first special
Sign is directly over second feature and oblique upper, or is merely representative of fisrt feature level height and is higher than second feature.Fisrt feature exists
Second feature " under ", " lower section " and " following " fisrt feature that includes are immediately below second feature and obliquely downward, or be merely representative of
Fisrt feature level height is less than second feature.
Embodiment 1：
A kind of adjustable voltage-stabilizing circuit system with anti-lightning strike anti-electromagnetic interference, sets filter circuit and can after rectification circuit
Regulator circuit is adjusted, rectification circuit can be exported to the direct current progress ripple containing ripple by filter circuit filters out, and reaches complete
Portion（It is or as complete as possible）The effect of ripple voltage is filtered out, providing ripple for adjustable regulator circuit disturbs direct current as small as possible
Source, the direct current after ripple filters out processing will carry out voltage stabilizing processing using adjustable regulator circuit, then being capable of output voltage
Adjustable D.C. regulated power supply, required DC power supply is provided for subsequent conditioning circuit, and total, which has, designs reasonable, science practicality
The features such as, as shown in Figure 1, especially using following setting structures：It is provided with lightning prevention circuit, electromagnetic interference filter circuit, rectification
Circuit, filter circuit and adjustable regulator circuit, the input terminal connection alternating current of the lightning prevention circuit, the output of lightning prevention circuit
The input terminal of end connection electromagnetic interference filter circuit, the input terminal of the output terminal connection rectification circuit of electromagnetic interference filter circuit,
The input terminal of the output terminal connection filter circuit of rectification circuit, the output terminal of filter circuit connect the input of adjustable regulator circuit
End；The adjustable regulator circuit is provided with voltage stabilizing chip UI, potentiometer W1, resistance R4 and capacitance C8, the input of voltage stabilizing chip UI
Foot is connected on the output terminal of filter circuit, and the ADJ feet of voltage stabilizing chip UI are grounded by potentiometer W1, and resistance R4 is connected to voltage stabilizing
Between the ADJ feet and output pin of chip UI, the capacitance C8 is connected in parallel between the output pin and ground of voltage stabilizing chip UI as adjustable
The output terminal of regulator circuit.
In design in use, the input terminal of lightning prevention circuit connects 220V alternating currents, lightning prevention circuit, which can work as, there is thunder
When hitting, high-pressure energy can be consumed or directly disconnect lightning prevention circuit and the circuit of rear class, avoid the chain of circuits of rear class
It is damaged；Electromagnetic interference filter circuit can suppress the electromagnetic noise and noise signal of input power, prevent to power supply
Interference, while be also prevented from the high frequency spurs that power supply produces in itself and power grid is disturbed；Alternating current structure lightning prevention circuit and electromagnetism are done
Rectification will be carried out by rectification circuit after disturbing filter circuit, then filter circuit carries out filtering out for ripple voltage, obtains ripple-free
Voltage（Or lack ripple voltage as far as possible）Direct current output and again by adjustable regulator circuit carry out voltage stabilizing processing, then export
The D.C. regulated power supply of required magnitude of voltage, and supply subsequent conditioning circuit.
Embodiment 2：
The present embodiment is further optimized based on the above embodiments, as shown in Figure 1, further is that this is better achieved
Invention, especially using following setting structures：The filter circuit includes resistance R3, capacitance C5, capacitance C6, capacitance C5, resistance R3
And capacitance C6 is serially connected to form RC pi type filters, and output terminal phase of one of capacitance as input terminal and rectification circuit
Connection, other in which capacitance are connected between the input pin and ground of voltage stabilizing chip UI as output terminal.
Embodiment 3：
The present embodiment is further optimized on the basis of any of the above-described embodiment, as shown in Figure 1, further to be preferably real
The existing present invention, especially using following setting structures：The electromagnetic interference filter circuit includes capacitance C1, common mode inductance L1, isolation
Capacitance, capacitance C4, resistance R1, resistance R2 and inductance L2, capacitance C1 are connected in parallel on altogether as the input terminal of electromagnetic interference filter circuit
On the input terminal of mould inductance L1, resistance R1 is serially connected with resistance R2, and the resistance R1 and resistance R2 being serially connected and capacitance C4
All it is connected in parallel on the output terminal of common mode inductance L1, two output terminals of common mode inductance L1 are all grounded by isolation capacitance, common mode electricity
First output terminal for feeling L1 passes through first input terminal of inductance L2 connection rectification circuits, second output of common mode inductance L1
End is connected with second input terminal of rectification circuit；Lead between isolation capacitance ground terminal and the output ground terminal of rectification circuit
Cross capacitance C7 isolation.
Embodiment 4：
The present embodiment is further optimized on the basis of any of the above-described embodiment, as shown in Figure 1, further to be preferably real
The existing present invention, especially using following setting structures：The isolation capacitance includes the capacitance C2 and capacitance C3 being serially connected, and mutually
The capacitance C2 and capacitance C3 of series connection are connected in parallel on the output terminal of common mode inductance L1, the connects end altogether ground connection of capacitance C2 and capacitance C3（It is excellent
Choosing, inductance L1A is grounded by capacitance C2, and inductance L1B is grounded by capacitance C3）, and the connects end altogether of capacitance C2 and capacitance C3 are led to
Cross between capacitance C7 and the output ground terminal of rectification circuit and isolate.
Embodiment 5：
The present embodiment is further optimized on the basis of any of the above-described embodiment, as shown in Figure 1, further to be preferably real
The existing present invention, especially using following setting structures：The common mode inductance L1 includes inductance L1A and inductance L1B, and inductance L1A's is defeated
Enter end and the input terminal of inductance L1B is connected on the output terminal of lightning prevention circuit, the output terminal connection inductance of inductance L1A
The non-inductance L2 connecting pins of the output terminal connection rectification circuit input end of L2, inductance L1B.
Embodiment 6：
The present embodiment is further optimized on the basis of any of the above-described embodiment, as shown in Figure 1, further to be preferably real
The existing present invention, especially using following setting structures：Second output terminal of the common mode inductance L1 is also connected by thermistor RT1
Connect second input terminal of rectification circuit（The output terminal of inductance L1B is non-by thermistor RT1 connection rectification circuit input ends
Inductance L2 connecting pins）.
Capacitance C1, common mode inductance L1, capacitance C2, double π types filter networks of capacitance C3 compositions are mainly to input power
Electromagnetic noise and noise signal are suppressed, and are prevented to power supply disturbance, while are also prevented from the high frequency spurs pair that power supply produces in itself
Power grid disturbs.When electric power starting moment, to charge to C5, since immediate current is big, add thermistor RT1 just can effectively prevent
Surge current.Because instantaneous energy totally disappeared consumption on thermistor RT1, thermistor RT1 resistance values after temperature rise after a certain period of time
Reduce（RT1 is negative temperature coefficient element）, the energy that at this moment it is consumed is very small, and late-class circuit can work normally.
Embodiment 7：
The present embodiment is further optimized on the basis of any of the above-described embodiment, as shown in Figure 1, further to be preferably real
The existing present invention, especially using following setting structures：The lightning prevention circuit includes three by a protective tube and a pressure-sensitive electricity
Resistance is serially connected formed protection circuit and discharge tube FDG, and two of which protection circuit is serially connected and is connected to exchange
Between firewire and zero curve, and it is grounded at the two bar protective circuits connects end altogether by discharge tube FDG（Isolation capacitance ground terminal）；Most
The protective tube of latter bar protective circuit is connected to firewire/or zero curve with the one of input terminal of electromagnetic interference filter circuit, being somebody's turn to do
The varistor of last bar protective circuit is connected in parallel on the input terminal of electromagnetic interference filter circuit（The input terminal of inductance L1A and
The input terminal of inductance L1B）.
Preferable lightning prevention circuit includes protective tube F1, protective tube F2, protective tube F3, varistor MOV1, varistor
MOV2, varistor MOV3, protective tube F2, varistor MOV1, varistor MOV2 and protective tube F3 are serially connected, and mutually
Protective tube F2, varistor MOV1, varistor MOV2 and protective tube F3 after series connection are connected to firewire（L）With zero curve（N）It
Between, one end of protective tube F1 is connected with firewire/or zero curve, the other end access electromagnetic interference filter circuit wherein one of protective tube F1
A input terminal, varistor MOV3 are connected in parallel on the input terminal of electromagnetic interference filter circuit.
When there is lightning stroke, when producing high pressure through power grid importing power supply, by varistor MOV1, varistor MOV2, pressure-sensitive electricity
MOV3 is hindered, protective tube F1, protective tube F2, protective tube F3, the lightning prevention circuit of discharge tube FDG compositions are protected.Pressed when being added in
When the voltage at quick resistance both ends exceedes its operating voltage, its resistance value reduces, and makes high-pressure energy consumption on varistor, if electric current
Excessive, protective tube F1, protective tube F2, protective tube F3 can be burnt so as to protect late-class circuit.
Embodiment 8：
The present embodiment is further optimized on the basis of any of the above-described embodiment, as shown in Figure 1, further to be preferably real
The existing present invention, especially using following setting structures：Input terminals of the capacitance C5 as RC pi type filters, capacitance C6 is as RC π
The output terminal of mode filter.Preferable capacitance C5 and capacitance C6 all use electrolytic capacitor, and the cathode of capacitance C5 and capacitance C6 and
Mat R3 is connected.
Embodiment 9：
The present embodiment is further optimized on the basis of any of the above-described embodiment, as shown in Figure 1, further to be preferably real
The existing present invention, especially using following setting structures：The rectification circuit uses full-bridge rectification heap（BRG1）.
Embodiment 10：
The present embodiment is further optimized on the basis of any of the above-described embodiment, as shown in Figure 1, further to be preferably real
The existing present invention, especially using following setting structures：The voltage stabilizing chip UI uses three terminal regulator LM317.
The above, is only presently preferred embodiments of the present invention, not does limitation in any form to the present invention, it is every according to
Any simply modification, the equivalent variations made according to the technical spirit of the present invention to above example, each fall within the protection of the present invention
Within the scope of.
Claims (10)
- A kind of 1. adjustable voltage-stabilizing circuit system with anti-lightning strike anti-electromagnetic interference, it is characterised in that：Be provided with lightning prevention circuit, Electromagnetic interference filter circuit, rectification circuit, filter circuit and adjustable regulator circuit, the input terminal connection of the lightning prevention circuit are handed over Galvanic electricity, the input terminal of the output terminal connection electromagnetic interference filter circuit of lightning prevention circuit, the output terminal of electromagnetic interference filter circuit The input terminal of rectification circuit, the input terminal of the output terminal connection filter circuit of rectification circuit are connected, the output terminal of filter circuit connects Connect the input terminal of adjustable regulator circuit；The adjustable regulator circuit is provided with voltage stabilizing chip UI, potentiometer W1, resistance R4 and capacitance C8, the input pin of voltage stabilizing chip UI are connected on the output terminal of filter circuit, and the ADJ feet of voltage stabilizing chip UI are connect by potentiometer W1 Ground, resistance R4 are connected between the ADJ feet of voltage stabilizing chip UI and output pin, and the capacitance C8 is connected in parallel on the output of voltage stabilizing chip UI Output terminal between foot and ground as adjustable regulator circuit.
- 2. a kind of adjustable voltage-stabilizing circuit system with anti-lightning strike anti-electromagnetic interference according to claim 1, its feature exist In：The filter circuit includes resistance R3, capacitance C5, capacitance C6, and capacitance C5, resistance R3 and capacitance C6 are serially connected to form RC π Mode filter, and one of capacitance is connected as input terminal with the output terminal of rectification circuit, other in which capacitance conduct Output terminal is connected between the input pin and ground of voltage stabilizing chip UI.
- 3. a kind of adjustable voltage-stabilizing circuit system with anti-lightning strike anti-electromagnetic interference according to claim 2, its feature exist In：The electromagnetic interference filter circuit include capacitance C1, common mode inductance L1, isolation capacitance, capacitance C4, resistance R1, resistance R2 and Inductance L2, capacitance C1 are connected in parallel on as the input terminal of electromagnetic interference filter circuit on the input terminal of common mode inductance L1, resistance R1 with Resistance R2 is serially connected, and the resistance R1 and resistance R2 being serially connected and capacitance C4 are all connected in parallel on the output terminal of common mode inductance L1 On, two output terminals of common mode inductance L1 are all grounded by isolation capacitance, and first output terminal of common mode inductance L1 passes through inductance First input terminal of L2 connection rectification circuits, second output terminal of common mode inductance L1 and second input terminal of rectification circuit It is connected；Isolated between output ground terminal of the isolation capacitance ground terminal with rectification circuit by capacitance C7.
- 4. a kind of adjustable voltage-stabilizing circuit system with anti-lightning strike anti-electromagnetic interference according to claim 3, its feature exist In：The isolation capacitance includes the capacitance C2 and capacitance C3 being serially connected, and the capacitance C2 and capacitance C3 that are serially connected are connected in parallel on On the output terminal of common mode inductance L1, the connects end altogether ground connection of capacitance C2 and capacitance C3.
- 5. a kind of adjustable voltage-stabilizing circuit system with anti-lightning strike anti-electromagnetic interference according to claim 4, its feature exist In：The common mode inductance L1 includes inductance L1A and inductance L1B, and the input terminal of inductance L1A connects respectively with the input terminal of inductance L1B It is connected on the output terminal of lightning prevention circuit, the output terminal connection rectified current of output terminal connection the inductance L2, inductance L1B of inductance L1A The non-inductance L2 connecting pins of road input terminal.
- 6. a kind of adjustable voltage-stabilizing circuit system with anti-lightning strike anti-electromagnetic interference according to claim 4 or 5, its feature It is：Second output terminal of the common mode inductance L1 also passes through second input terminal of thermistor RT1 connection rectification circuits.
- 7. according to a kind of adjustable voltage-stabilizing circuit system with anti-lightning strike anti-electromagnetic interference of claim 1 ~ 5 any one of them, It is characterized in that：The lightning prevention circuit is serially connected formed guarantor including three by a protective tube and a varistor Protection circuit and discharge tube FDG, two of which protection circuit are serially connected and are connected between the firewire of exchange and zero curve, and at this It is grounded at two bar protective circuit connects end altogethers by discharge tube FDG；The protective tube of last bar protective circuit is connected to firewire/or zero On line and the one of input terminal of electromagnetic interference filter circuit, the varistor of last bar protective circuit is connected in parallel on electromagnetism and does Disturb on the input terminal of filter circuit.
- 8. a kind of adjustable voltage-stabilizing circuit system with anti-lightning strike anti-electromagnetic interference according to Claims 2 or 3 or 4 or 5, It is characterized in that：Input terminals of the capacitance C5 as RC pi type filters, output terminals of the capacitance C6 as RC pi type filters.
- A kind of 9. adjustable regulator circuit system with anti-lightning strike anti-electromagnetic interference according to claim 1 or 2 or 3 or 4 or 5 System, it is characterised in that：The rectification circuit uses full-bridge rectification heap.
- A kind of 10. adjustable regulator circuit with anti-lightning strike anti-electromagnetic interference according to claim 1 or 2 or 3 or 4 or 5 System, it is characterised in that：The voltage stabilizing chip UI uses three terminal regulator LM317.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711320887.2A CN107968553A (en) | 2017-12-12 | 2017-12-12 | A kind of adjustable voltage-stabilizing circuit system with anti-lightning strike anti-electromagnetic interference |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711320887.2A CN107968553A (en) | 2017-12-12 | 2017-12-12 | A kind of adjustable voltage-stabilizing circuit system with anti-lightning strike anti-electromagnetic interference |
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| Publication Number | Publication Date |
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| CN107968553A true CN107968553A (en) | 2018-04-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711320887.2A Withdrawn CN107968553A (en) | 2017-12-12 | 2017-12-12 | A kind of adjustable voltage-stabilizing circuit system with anti-lightning strike anti-electromagnetic interference |
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| CN (1) | CN107968553A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108649816A (en) * | 2018-06-14 | 2018-10-12 | 徐杰 | A kind of current rectifying and wave filtering circuit |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203761280U (en) * | 2013-12-28 | 2014-08-06 | 东莞市盈聚电子有限公司 | Lightning-proof power adapter circuit |
| CN206294076U (en) * | 2016-12-30 | 2017-06-30 | 哈尔滨理工大学 | A kind of Novel DC mu balanced circuit |
-
2017
- 2017-12-12 CN CN201711320887.2A patent/CN107968553A/en not_active Withdrawn
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203761280U (en) * | 2013-12-28 | 2014-08-06 | 东莞市盈聚电子有限公司 | Lightning-proof power adapter circuit |
| CN206294076U (en) * | 2016-12-30 | 2017-06-30 | 哈尔滨理工大学 | A kind of Novel DC mu balanced circuit |
Non-Patent Citations (2)
| Title |
|---|
| 华强电子网: "LM317的最小稳定工作电流", 《HTTPS://TECH.HQEW.COM/CIRCUIT_798638》 * |
| 电工之家: "【基础】开关电源电路图讲解", 《HTTPS://WWW.SOHU.COM/A/118968885_466936》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108649816A (en) * | 2018-06-14 | 2018-10-12 | 徐杰 | A kind of current rectifying and wave filtering circuit |
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Application publication date: 20180427 |