CN208971133U - A kind of anti-surge circuit and pressure stabilizing device - Google Patents
A kind of anti-surge circuit and pressure stabilizing device Download PDFInfo
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- CN208971133U CN208971133U CN201821572692.7U CN201821572692U CN208971133U CN 208971133 U CN208971133 U CN 208971133U CN 201821572692 U CN201821572692 U CN 201821572692U CN 208971133 U CN208971133 U CN 208971133U
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Abstract
The utility model provides a kind of anti-surge circuit and pressure stabilizing device, and the anti-surge circuit includes the first voltage regulator circuit and the second voltage regulator circuit；First voltage regulator circuit includes single-phase Isolated Shield transformer；The primary of the single-phase Isolated Shield transformer is connected to power supply, and the secondary of the single-phase Isolated Shield transformer is connected to second voltage regulator circuit；Second voltage regulator circuit includes the first varistor R1, the second varistor R2, third varistor R3 and gas-discharge tube；The first end of the first varistor R1 is started to exchange fire line, and the second end of the first varistor R1 is connected to zero curve by the second varistor R2, and the second end of the first varistor R1 also passes through the gas-discharge tube and is grounded；The both ends of the third varistor R3 are respectively connected to firewire and zero curve.The utility model can effectively prevent surge voltage to damage load.
Description
Technical field
The utility model relates to protection circuit field, espespecially a kind of anti-surge circuit and pressure stabilizing device.
Background technique
Currently, at the train station, many rays safety detection apparatus, communication equipment are both provided in subway station, terminal, due to train
It stands, the electric power of subway station, terminal is very big, and very big interference can be caused to power grid, and so that power grid is formed surge voltage, if
The peak value of surge voltage is excessively high, it is possible to rays safety detection apparatus be caused to damage.
Damage of the power network fluctuation to equipment in order to prevent, the utility model provides a kind of anti-surge circuit and pressure stabilizing is set
It is standby.
Summary of the invention
The utility model provides a kind of anti-surge circuit and pressure stabilizing device, effectively prevents surge voltage and causes to damage to load
It is bad.
The technical scheme that the utility model is provided is as follows:
The utility model provides a kind of anti-surge circuit, and the anti-surge circuit includes that the first voltage regulator circuit and second are steady
Volt circuit；First voltage regulator circuit includes single-phase Isolated Shield transformer；The first cascade of the single-phase Isolated Shield transformer
It is connected to power supply, the secondary of the single-phase Isolated Shield transformer is connected to second voltage regulator circuit；Second voltage regulator circuit
Including the first varistor R1, the second varistor R2, third varistor R3 and gas-discharge tube；The first pressure-sensitive electricity
The first end of resistance R1 is started to exchange fire line, and the second end of the first varistor R1 is connected to zero by the second varistor R2
Line, the second end of the first varistor R1 also pass through the gas-discharge tube and are grounded；The third varistor R3
Both ends be respectively connected to firewire and zero curve.
In the present solution, single-phase Isolated Shield transformer be mainly used for main power source end of incoming cables a surge isolation, due to every
It is to use electromagnetic induction principle, no electrical connection, while coil has saturation effect from transformer, it is possible to effectively by surge
The peak value of voltage is only left to be equivalent to the peak voltage of 1.5 times of single-phase alternating currents to isolating out.
Varistor and gas-discharge tube composition the second voltage regulator circuit using varistor non-VA characteristic curve and
The characteristic that sparks of gas-discharge tube, can effectively block extraneous high surge and electric elements inside is attracted and makes when starting
At fluctuation, while the leakage current of varistor can be effectively prevented.
Optionally, the anti-surge circuit further includes the filter circuit for being connected to second voltage regulator circuit；The filtered electrical
Road includes common mode filtering sub-circuit and differential mode filtering sub-circuit；The common mode filtering sub-circuit includes: common mode inductance, capacitor C1；
The differential mode filtering sub-circuit includes: capacitor C2, capacitor C3, resistance R4；The first end of the capacitor C1 is connected to firewire, described
The second end of capacitor C1 is connected to zero curve, and the first end of the capacitor C1 is additionally coupled to the first input end of the common mode inductance,
The second end of the capacitor C1 is additionally coupled to the second input terminal of the common mode inductance；First output end of the common mode inductance is logical
Cross the second output terminal that resistance R4 is connected to the common mode inductance；First output end of the common mode inductance is additionally coupled to the electricity
Hold the first end of C2, the second end ground connection of the capacitor C2, the second end of the capacitor C2 also pass through capacitor C3 be connected to it is described
The second output terminal of common mode inductance.
The main function of filter circuit is the remaining high voltage filtered out by the second quick resistance in the voltage regulator circuit Central Asia, and
Filter out the noise of voltage end when load equipment works normally, can power conditioner significantly, worked normally for load equipment provide it is good
Good power utilization environment.
Optionally, the filter circuit further include: iron inductance, capacitor C4, capacitor C5, capacitor C6, the iron inductance
First input end be connected to the first output end of the common mode inductance, the second input terminal of the iron inductance is connected to described
First output end of the second output terminal of common mode inductance, the iron inductance is connected to the of the iron inductance by capacitor C4
Two output ends, the first output end of the iron inductance are additionally coupled to the first end of capacitor C5, the second termination of the capacitor C5
Ground, the second end of the capacitor also pass through the second output terminal that capacitor C6 is connected to the iron inductance.
It is additionally added iron inductance in filter circuit, keeps the filter effect of filter circuit more preferable.
Optionally, the single-phase Isolated Shield transformer includes: single-phase isolating transformer, and is placed in the single-phase isolation
Shielded layer between the input winding and output winding of transformer；The shielding layer grounding.
Optionally, the shielded layer with a thickness of 0.5mm~1.5mm.
Shielded layer can effectively eliminate the coupling effect of primary and secondary on single-phase Isolated Shield transformer, and shielded layer is got over
Thickness, the effect for eliminating coupling is better, but its cost is higher, and the utility model takes into account cost and eliminates the effect of coupling, by institute
State shielded layer with a thickness of 0.5mm~1.5mm.
The utility model additionally provides a kind of pressure stabilizing device, and one end of the pressure stabilizing device is connected to power supply, and the other end connects
It is connected to load；Anti-surge circuit is integrated in the pressure stabilizing device, the anti-surge circuit includes the first voltage regulator circuit and second
Voltage regulator circuit；First voltage regulator circuit includes single-phase Isolated Shield transformer；The primary of the single-phase Isolated Shield transformer
It is connected to power supply, the secondary of the single-phase Isolated Shield transformer is connected to second voltage regulator circuit；The second pressure stabilizing electricity
Road includes the first varistor R1, the second varistor R2, third varistor R3 and gas-discharge tube；Described first is pressure-sensitive
The first end of resistance R1 is started to exchange fire line, and the second end of the first varistor R1 is connected to zero by the second varistor R2
Line, the second end of the first varistor R1 also pass through the gas-discharge tube and are grounded；The third varistor R3
Both ends be respectively connected to firewire and zero curve.
In the present solution, single-phase Isolated Shield transformer is mainly used for the surge isolation of main power source end of incoming cables, due to list
Isolating shielded transformer is to use electromagnetic induction principle, no electrical connection, while coil has saturation effect, it is possible to effectively
The peak value of surge voltage to isolating out, is only left to be equivalent to the peak voltage of 1.5 times of single-phase alternating currents on ground.
Varistor and gas-discharge tube composition the second voltage regulator circuit using varistor non-VA characteristic curve and
The characteristic that sparks of gas-discharge tube, can effectively block extraneous high surge and electric elements inside is attracted and makes when starting
At fluctuation, while the leakage current of varistor can be effectively prevented.
Optionally, the anti-surge circuit further includes the filter circuit for being connected to second voltage regulator circuit；The filtered electrical
Road includes common mode filtering sub-circuit and differential mode filtering sub-circuit；The common mode filtering sub-circuit includes: common mode inductance, capacitor C1；
The differential mode filtering sub-circuit includes: capacitor C2, capacitor C3, resistance R4；The first end of the capacitor C1 is connected to firewire, described
The second end of capacitor C1 is connected to zero curve, and the first end of the capacitor C1 is additionally coupled to the first input end of the common mode inductance,
The second end of the capacitor C1 is additionally coupled to the second input terminal of the common mode inductance；First output end of the common mode inductance is logical
Cross the second output terminal that resistance R4 is connected to the common mode inductance；First output end of the common mode inductance is additionally coupled to the electricity
Hold the first end of C2, the second end ground connection of the capacitor C2, the second end of the capacitor C2 also pass through capacitor C3 be connected to it is described
The second output terminal of common mode inductance.
The main function of filter circuit is the remaining high voltage filtered out by the second quick resistance in the voltage regulator circuit Central Asia, and
Filter out the noise of voltage end when load equipment works normally, can power conditioner significantly, worked normally for load equipment provide it is good
Good power utilization environment.
Optionally, the filter circuit further include: iron inductance, capacitor C4, capacitor C5, capacitor C6, the iron inductance
First input end be connected to the first output end of the common mode inductance, the second input terminal of the iron inductance is connected to described
First output end of the second output terminal of common mode inductance, the iron inductance is connected to the of the iron inductance by capacitor C4
Two output ends, the first output end of the iron inductance are additionally coupled to the first end of capacitor C5, the second termination of the capacitor C5
Ground, the second end of the capacitor also pass through the second output terminal that capacitor C6 is connected to the iron inductance.
It is additionally added iron inductance in filter circuit, keeps the filter effect of filter circuit more preferable.
Optionally, the single-phase Isolated Shield transformer includes: single-phase isolating transformer, and is placed in the single-phase isolation
Shielded layer between the input winding and output winding of transformer；The shielding layer grounding.
Optionally, the shielded layer with a thickness of 0.5mm~1.5mm.
Shielded layer can effectively eliminate the coupling effect of primary and secondary on single-phase Isolated Shield transformer, and shielded layer is got over
Thickness, the effect for eliminating coupling is better, but its cost is higher, and the utility model takes into account cost and eliminates the effect of coupling, by institute
State shielded layer with a thickness of 0.5mm~1.5mm.
By a kind of anti-surge circuit provided by the utility model and pressure stabilizing device, following at least one can be brought beneficial
Effect:
The utility model filters out surge voltage using multi-level pmultistage circuit, load equipment can be effectively prevent to damage.First is steady
Single-phase Isolated Shield transformer in volt circuit is mainly used for the surge isolation of main power source end of incoming cables, due to isolating transformer
It is to use electromagnetic induction principle, no electrical connection, while coil has saturation effect, it is possible to effectively by the peak of surge voltage
It is worth to isolating out, only the remaining peak voltage for being equivalent to 1.5 times of single-phase alternating currents, while selects 0.5mm~1.5mm shielded layer,
It can effectively eliminate the coupling effect of single-phase Isolated Shield transformer end of incoming cables and leading-out terminal.Pressure-sensitive electricity in second voltage regulator circuit
Resistance, gas-discharge tube are equivalent to a secondary surge circuit, are put using the non-VA characteristic curve and gas of varistor
The characteristic that sparks of fulgurite, can effectively block extraneous high surge and electric elements inside be attracted and when starting caused by wave
It is dynamic, while the leakage current of varistor can be effectively prevented.Filter circuit is equivalent to the steady wave circuit of Anti-surging three times, predominantly
Filter varistor residual voltage, the noise of voltage end when equipment works normally, can power conditioner significantly, mentioned for equipment normal work
For good power utilization environment.The utility model can effectively filter out surge voltage, prevent load equipment by surge by multi-level pmultistage circuit
Voltage damage.
Detailed description of the invention
Below by clearly understandable mode, preferred embodiment is described with reference to the drawings, to a kind of anti-surge circuit and surely
Above-mentioned characteristic, technical characteristic, advantage and its implementation of pressure equipment are further described.
Fig. 1 is a kind of electrical block diagram of one embodiment of anti-surge circuit of the utility model；
Fig. 2 is the circuit diagram of the first voltage regulator circuit in a kind of one embodiment of anti-surge circuit of the utility model；
Fig. 3 is the circuit diagram of the second voltage regulator circuit in a kind of one embodiment of anti-surge circuit of the utility model；
Fig. 4 is a kind of electrical block diagram of another embodiment of anti-surge circuit of the utility model；
Fig. 5 is the circuit diagram of filter circuit in a kind of one embodiment of anti-surge circuit of the utility model.
Specific embodiment
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, attached drawing will be compareed below
Illustrate specific embodiment of the present utility model.It should be evident that the accompanying drawings in the following description is only the one of the utility model
A little embodiments for those of ordinary skill in the art without creative efforts, can also be according to these
Attached drawing obtains other attached drawings, and obtains other embodiments.
To make simplified form, part relevant to the utility model is only schematically shown in each figure, they are not
Represent its practical structures as product.In addition, there is identical structure or function in some figures so that simplified form is easy to understand
The component of energy, only symbolically depicts one of those, or only marked one of those.Herein, "one" is not only
It indicates " only this ", can also indicate the situation of " more than one ".
The utility model provides a kind of one embodiment of anti-surge circuit, as shown in Figure 1, the anti-surge circuit packet
Include the first voltage regulator circuit and the second voltage regulator circuit；
As shown in Fig. 2, first voltage regulator circuit includes single-phase Isolated Shield transformer；The single-phase Isolated Shield transformation
The primary of device is connected to power supply, and the secondary of the single-phase Isolated Shield transformer is connected to second voltage regulator circuit；
As shown in figure 3, second voltage regulator circuit is pressure-sensitive including the first varistor R1, the second varistor R2, third
Resistance R3 and gas-discharge tube；The first end of the first varistor R1 is started to exchange fire line, and the of the first varistor R1
Two ends are connected to zero curve by the second varistor R2, and the second end of the first varistor R1 also passes through described
Gas-discharge tube ground connection；The both ends of the third varistor R3 are respectively connected to firewire and zero curve.
In large-scale electricity utilization site, power grid often will appear surge voltage, be likely to damage when surge voltage is excessive
Bad load equipment.One end of anti-surge circuit can be connected to main power source by the present embodiment, and the other end is connected to load, passes through wave resistance
Circuit is gushed to filter out surge voltage, and load equipment is protected not damaged by surge voltage.
In the present embodiment, single-phase Isolated Shield transformer is mainly used for the surge isolation of main power source end of incoming cables, due to
Isolating transformer is to use electromagnetic induction principle, no electrical connection, while coil has saturation effect, it is possible to effectively will be unrestrained
The peak value of voltage is gushed to isolating out, and is only left to be equivalent to the peak voltage of 1.5 times of single-phase alternating currents.
Varistor and gas-discharge tube composition the second voltage regulator circuit using varistor non-VA characteristic curve and
The characteristic that sparks of gas-discharge tube, can effectively obstruct extraneous high surge and electric elements inside is attracted and makes when starting
At fluctuation, while the leakage current of varistor can be effectively prevented.
The utility model additionally provides another embodiment of anti-surge circuit, on the basis of a upper embodiment, such as Fig. 4
Shown, the anti-surge circuit in the present embodiment further includes the filter circuit for being connected to second voltage regulator circuit.
As shown in figure 5, the filter circuit includes common mode filtering sub-circuit and differential mode filtering sub-circuit；The common mode filtering
Sub-circuit includes: common mode inductance, capacitor C1；The differential mode filtering sub-circuit includes: capacitor C2, capacitor C3, resistance R4；The electricity
The first end for holding C1 is connected to firewire, and the second end of the capacitor C1 is connected to zero curve, and the first end of the capacitor C1 is also connected with
To the first input end of the common mode inductance, the second end of the capacitor C1 is additionally coupled to the second input of the common mode inductance
End；First output end of the common mode inductance is connected to the second output terminal of the common mode inductance by resistance R4；The common mode
First output end of inductance is additionally coupled to the first end of the capacitor C2, the second end ground connection of the capacitor C2, the capacitor C2
Second end also pass through the second output terminal that capacitor C3 is connected to the common mode inductance.
The filter circuit further include: iron inductance, capacitor C4, capacitor C5, capacitor C6, the first of the iron inductance are defeated
Enter the first output end that end is connected to the common mode inductance, the second input terminal of the iron inductance is connected to the common mode inductance
Second output terminal, the first output end of the iron inductance is connected to the second output of the iron inductance by capacitor C4
End, the first output end of the iron inductance are additionally coupled to the first end of capacitor C5, and the second end ground connection of the capacitor C5 is described
The second end of capacitor also passes through the second output terminal that capacitor C6 is connected to the iron inductance.
The main function of filter circuit is the remaining high voltage filtered out by the second quick resistance in the voltage regulator circuit Central Asia, and
Filter out the noise of voltage end when load equipment works normally, can power conditioner significantly, worked normally for load equipment provide it is good
Good power utilization environment.It is additionally added iron inductance in filter circuit, keeps the filter effect of filter circuit more preferable.
The utility model additionally provides the further embodiment of anti-surge circuit, on the basis of above-mentioned any embodiment,
The single-phase Isolated Shield transformer in the present embodiment includes: single-phase isolating transformer, and is placed in the single-phase isolation and becomes
Shielded layer between the input winding and output winding of depressor；The shielding layer grounding, with a thickness of 0.5mm~1.5mm.
Shielded layer can effectively eliminate the coupling of (end of incoming cables) primary on single-phase Isolated Shield transformer and secondary (leading-out terminal)
Effect is closed, shielded layer is thicker, and the effect for eliminating coupling is better, but its cost is higher, otherwise shielded layer is thinner, eliminates coupling
Effect is poorer, but cost is lower, and the utility model takes into account cost and eliminates the effect of coupling, by the shielded layer with a thickness of
0.5mm~1.5mm.
When shielded layer is 0.5mm, the coupling effect of end of incoming cables and leading-out terminal can be substantially eliminated, and cost is minimum,
The shielded layer of 0.5mm can be used in the case where not high to performance requirement.It, can be effectively when shielded layer is 1.5mm
The coupling effect of elimination end of incoming cables and leading-out terminal, but higher cost, can be used this programme without considering the cost.This
The shielded layer of 0.8mm can be used in embodiment, and the coupling effect of good elimination end of incoming cables and leading-out terminal can be reached with lower cost
The effect answered.
The present embodiment additionally provides a kind of embodiment of pressure stabilizing device, is integrated with anti-surge circuit in the pressure stabilizing device,
One end of the pressure stabilizing device is connected to power supply, and the other end is connected to load；Anti-surge circuit includes the first voltage regulator circuit and the
Two voltage regulator circuits.
As shown in Fig. 2, first voltage regulator circuit includes single-phase Isolated Shield transformer；The single-phase Isolated Shield transformation
The primary of device is connected to power supply, and the secondary of the single-phase Isolated Shield transformer is connected to second voltage regulator circuit.
As shown in figure 3, second voltage regulator circuit is pressure-sensitive including the first varistor R1, the second varistor R2, third
Resistance R3 and gas-discharge tube；The first end of the first varistor R1 is started to exchange fire line, and the of the first varistor R1
Two ends are connected to zero curve by the second varistor R2, and the second end of the first varistor R1 also passes through described
Gas-discharge tube ground connection；The both ends of the third varistor R3 are respectively connected to firewire and zero curve.
Pressure stabilizing device in the present embodiment is integrated with anti-surge circuit, and load equipment can be connected to electricity by pressure stabilizing device
Source can effectively filter out surge voltage, play the role of power supply pressure stabilizing.
In the present embodiment, single-phase Isolated Shield transformer is mainly used for the surge isolation of main power source end of incoming cables, due to
Isolating transformer is to use electromagnetic induction principle, no electrical connection, while coil has saturation effect, it is possible to effectively will be unrestrained
The peak value of voltage is gushed to isolating out, and is only left to be equivalent to the peak voltage of 1.5 times of single-phase alternating currents.Varistor and gas discharge
Second voltage regulator circuit of pipe composition, can using the non-VA characteristic curve of varistor and the characteristic that sparks of gas-discharge tube
Fluctuation caused by when effectively obstructing extraneous high surge and electric elements inside actuation and starting, while pressure can be effectively prevented
The leakage current of quick resistance.
The utility model additionally provides a kind of another embodiment of pressure stabilizing device, on the basis of a upper embodiment, this
The anti-surge circuit in pressure stabilizing device in embodiment further includes the filter circuit for being connected to second voltage regulator circuit；
As shown in figure 5, the filter circuit includes common mode filtering sub-circuit and differential mode filtering sub-circuit；The common mode filtering
Sub-circuit includes: common mode inductance, capacitor C1；The differential mode filtering sub-circuit includes: capacitor C2, capacitor C3, resistance R4；The electricity
The first end for holding C1 is connected to firewire, and the second end of the capacitor C1 is connected to zero curve, and the first end of the capacitor C1 is also connected with
To the first input end of the common mode inductance, the second end of the capacitor C1 is additionally coupled to the second input of the common mode inductance
End；First output end of the common mode inductance is connected to the second output terminal of the common mode inductance by resistance R4；The common mode
First output end of inductance is additionally coupled to the first end of the capacitor C2, the second end ground connection of the capacitor C2, the capacitor C2
Second end also pass through the second output terminal that capacitor C3 is connected to the common mode inductance.
The filter circuit further include: iron inductance, capacitor C4, capacitor C5, capacitor C6, the first of the iron inductance are defeated
Enter the first output end that end is connected to the common mode inductance, the second input terminal of the iron inductance is connected to the common mode inductance
Second output terminal, the first output end of the iron inductance is connected to the second output of the iron inductance by capacitor C4
End, the first output end of the iron inductance are additionally coupled to the first end of capacitor C5, and the second end ground connection of the capacitor C5 is described
The second end of capacitor also passes through the second output terminal that capacitor C6 is connected to the iron inductance.
The main function of filter circuit is the remaining high voltage filtered out by the second quick resistance in the voltage regulator circuit Central Asia, and
Filter out the noise of voltage end when load equipment works normally, can power conditioner significantly, worked normally for load equipment provide it is good
Good power utilization environment.It is additionally added iron inductance in filter circuit, keeps the filter effect of filter circuit more preferable.
The utility model additionally provides a kind of further embodiment of pressure stabilizing device, in above-mentioned any pressure stabilizing device embodiment
On the basis of, the single-phase Isolated Shield transformer in the present embodiment includes: single-phase isolating transformer, and is placed in the list
It isolates the input winding of transformer and exports the shielded layer between winding；The shielding layer grounding, with a thickness of 0.5mm~
1.5mm。
Shielded layer can effectively eliminate the coupling of (end of incoming cables) primary on single-phase Isolated Shield transformer and secondary (leading-out terminal)
Effect is closed, shielded layer is thicker, and the effect for eliminating coupling is better, but its cost is higher, otherwise shielded layer is thinner, eliminates coupling
Effect is poorer, but cost is lower, and the utility model takes into account cost and eliminates the effect of coupling, by the shielded layer with a thickness of
0.5mm~1.5mm.
When shielded layer is 0.5mm, the coupling effect of end of incoming cables and leading-out terminal can be substantially eliminated, and cost is minimum,
The shielded layer of 0.5mm can be used in the case where not high to performance requirement.It, can be effectively when shielded layer is 1.5mm
The coupling effect of elimination end of incoming cables and leading-out terminal, but higher cost, can be used this programme without considering the cost.This
The shielded layer of 0.8mm can be used in embodiment, and the coupling effect of good elimination end of incoming cables and leading-out terminal can be reached with lower cost
The effect answered.
It should be noted that above-described embodiment can be freely combined as needed.The above is only the utility model
Preferred embodiment, it is noted that for those skilled in the art, do not departing from the utility model principle
Under the premise of, several improvements and modifications can also be made, these improvements and modifications also should be regarded as the protection scope of the utility model.
Claims (10)
1. a kind of anti-surge circuit, which is characterized in that the anti-surge circuit includes the first voltage regulator circuit and the second voltage regulator circuit；
First voltage regulator circuit includes single-phase Isolated Shield transformer；The primary of the single-phase Isolated Shield transformer is connected to
The secondary of power supply, the single-phase Isolated Shield transformer is connected to second voltage regulator circuit；
Second voltage regulator circuit includes the first varistor R1, the second varistor R2, third varistor R3 and gas
Discharge tube；The first end of the first varistor R1 is started to exchange fire line, and the second end of the first varistor R1 passes through described the
Two varistor R2 are connected to zero curve, and the second end of the first varistor R1 also passes through the gas-discharge tube and is grounded；Institute
The both ends for stating third varistor R3 are respectively connected to firewire and zero curve.
2. a kind of anti-surge circuit according to claim 1, which is characterized in that the anti-surge circuit further includes being connected to institute
State the filter circuit of the second voltage regulator circuit；
The filter circuit includes common mode filtering sub-circuit and differential mode filtering sub-circuit；
The common mode filtering sub-circuit includes: common mode inductance, capacitor C1；The differential mode filtering sub-circuit includes: capacitor C2, capacitor
C3, resistance R4；
The first end of the capacitor C1 is connected to firewire, and the second end of the capacitor C1 is connected to zero curve, and the of the capacitor C1
One end is additionally coupled to the first input end of the common mode inductance, and the second end of the capacitor C1 is additionally coupled to the common mode inductance
Second input terminal；First output end of the common mode inductance is connected to the second output terminal of the common mode inductance by resistance R4；
First output end of the common mode inductance is additionally coupled to the first end of the capacitor C2, the second end ground connection of the capacitor C2, institute
The second end for stating capacitor C2 also passes through the second output terminal that capacitor C3 is connected to the common mode inductance.
3. a kind of anti-surge circuit according to claim 2, which is characterized in that the filter circuit further include: iron core electricity
Sense, capacitor C4, capacitor C5, capacitor C6, the first input end of the iron inductance are connected to the first output of the common mode inductance
End, the second input terminal of the iron inductance are connected to the second output terminal of the common mode inductance, and the first of the iron inductance
Output end is connected to the second output terminal of the iron inductance by capacitor C4, and the first output end of the iron inductance is also connected with
To the first end of capacitor C5, the second end of the capacitor C5 is grounded, and the second end of the capacitor also passes through capacitor C6 and is connected to institute
State the second output terminal of iron inductance.
4. a kind of anti-surge circuit according to claim 1, it is characterised in that；
The single-phase Isolated Shield transformer includes: single-phase isolating transformer, and is placed in the defeated of the single-phase isolating transformer
Enter winding and exports the shielded layer between winding, the shielding layer grounding.
5. a kind of anti-surge circuit according to claim 4, it is characterised in that；
The shielded layer with a thickness of 0.5mm~1.5mm.
6. a kind of pressure stabilizing device, which is characterized in that one end of the pressure stabilizing device is connected to power supply, and the other end is connected to load；
Anti-surge circuit is integrated in the pressure stabilizing device, the anti-surge circuit includes the first voltage regulator circuit and the second pressure stabilizing electricity
Road；
First voltage regulator circuit includes single-phase Isolated Shield transformer；The primary of the single-phase Isolated Shield transformer is connected to
The secondary of power supply, the single-phase Isolated Shield transformer is connected to second voltage regulator circuit；
Second voltage regulator circuit includes the first varistor R1, the second varistor R2, third varistor R3 and gas
Discharge tube；The first end of the first varistor R1 is started to exchange fire line, and the second end of the first varistor R1 passes through described the
Two varistor R2 are connected to zero curve, and the second end of the first varistor R1 also passes through the gas-discharge tube and is grounded；Institute
The both ends for stating third varistor R3 are respectively connected to firewire and zero curve.
7. a kind of pressure stabilizing device according to claim 6, which is characterized in that the anti-surge circuit further include be connected to it is described
The filter circuit of second voltage regulator circuit；
The filter circuit includes common mode filtering sub-circuit and differential mode filtering sub-circuit；
The common mode filtering sub-circuit includes: common mode inductance, capacitor C1；The differential mode filtering sub-circuit includes: capacitor C2, capacitor
C3, resistance R4；
The first end of the capacitor C1 is connected to firewire, and the second end of the capacitor C1 is connected to zero curve, and the of the capacitor C1
One end is additionally coupled to the first input end of the common mode inductance, and the second end of the capacitor C1 is additionally coupled to the common mode inductance
Second input terminal；First output end of the common mode inductance is connected to the second output terminal of the common mode inductance by resistance R4；
First output end of the common mode inductance is additionally coupled to the first end of the capacitor C2, the second end ground connection of the capacitor C2, institute
The second end for stating capacitor C2 also passes through the second output terminal that capacitor C3 is connected to the common mode inductance.
8. a kind of pressure stabilizing device according to claim 7, which is characterized in that the filter circuit further include: iron inductance,
Capacitor C4, capacitor C5, capacitor C6, the first input end of the iron inductance are connected to the first output end of the common mode inductance,
Second input terminal of the iron inductance is connected to the second output terminal of the common mode inductance, the first output of the iron inductance
End is connected to the second output terminal of the iron inductance by capacitor C4, and the first output end of the iron inductance is additionally coupled to electricity
Hold the first end of C5, the second end ground connection of the capacitor C5, the second end of the capacitor also passes through capacitor C6 and is connected to the iron
The second output terminal of core inductance.
9. a kind of pressure stabilizing device according to claim 6, it is characterised in that；
The single-phase Isolated Shield transformer includes: single-phase isolating transformer, and is placed in the defeated of the single-phase isolating transformer
Enter winding and exports the shielded layer between winding；The shielding layer grounding.
10. a kind of pressure stabilizing device according to claim 9, it is characterised in that；
The shielded layer with a thickness of 0.5mm~1.5mm.
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| CN201821572692.7U CN208971133U (en) | 2018-09-26 | 2018-09-26 | A kind of anti-surge circuit and pressure stabilizing device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112909908A (en) * | 2021-01-20 | 2021-06-04 | 宁波方太厨具有限公司 | Anti-surge circuit of side-draft range hood |
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2018
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112909908A (en) * | 2021-01-20 | 2021-06-04 | 宁波方太厨具有限公司 | Anti-surge circuit of side-draft range hood |
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