CN109066636A - A kind of circuit of Anti-surging - Google Patents
A kind of circuit of Anti-surging Download PDFInfo
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- CN109066636A CN109066636A CN201810924402.9A CN201810924402A CN109066636A CN 109066636 A CN109066636 A CN 109066636A CN 201810924402 A CN201810924402 A CN 201810924402A CN 109066636 A CN109066636 A CN 109066636A
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- diode
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
- H02H9/045—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage adapted to a particular application and not provided for elsewhere
- H02H9/047—Free-wheeling circuits
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
- H02H9/042—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage comprising means to limit the absorbed power or indicate damaged over-voltage protection device
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/20—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess voltage
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
- H02H7/12—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers
- H02H7/125—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for rectifiers
- H02H7/1252—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for rectifiers responsive to overvoltage in input or output, e.g. by load dump
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/001—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection limiting speed of change of electric quantities, e.g. soft switching on or off
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
The present invention provides a kind of circuits of Anti-surging, comprising: first diode, the second diode, third diode, the 4th diode and the first varistor；The anode of the first diode is connected with the anode of the 4th diode, the cathode of the first diode is connected with the anode of second diode, the cathode of second diode is connected with the cathode of the third diode, and the anode of the third diode is connected with the cathode of the 4th diode；The cathode of the first diode is connected with zero curve, and the cathode of the 4th diode is connected with firewire；The first end of first varistor is connected with the cathode of the 4th diode, and the second end of first varistor is connected with the anode of the 4th diode；The anode of 4th diode is with connecing direct current.The present invention provides a kind of circuits of Anti-surging, can be improved the effect of Anti-surging.
Description
Technical field
The present invention relates to electronic technology field, in particular to a kind of circuit of Anti-surging.
Background technique
Air-conditioner outdoor unit etc. is placed in outdoor equipment, there is a possibility that being struck by lightning, if power supply line be struck by lightning after wink
Between high voltage enter the equipment such as air-conditioner outdoor unit, and the Anti-surging ability of these equipment is poor, can directly result in equipment
Circuit board failure.
In the prior art, Anti-surging mainly uses fuse to realize, the installation insurance silk on firewire is unrestrained when generating
When gushing voltage, circuit board is protected by fuse wire, still, the fusing of fuse needs the regular hour,
This time interior circuit board may be damaged, and the effect of Anti-surging is poor.
Summary of the invention
The embodiment of the invention provides a kind of circuits of Anti-surging, can be improved the effect of Anti-surging.
The embodiment of the invention provides a kind of circuits of Anti-surging, comprising:
First diode, the second diode, third diode, the 4th diode and the first varistor；
The first diode anode be connected with the anode of the 4th diode, the cathode of the first diode and
The anode of second diode is connected, and the cathode of second diode is connected with the cathode of the third diode, described
The anode of third diode is connected with the cathode of the 4th diode；
The cathode of the first diode is connected with zero curve, and the cathode of the 4th diode is connected with firewire；
The first end of first varistor is connected with the cathode of the 4th diode, first varistor
Second end is connected with the anode of the 4th diode；
The anode of 4th diode is with connecing direct current.
Further,
The circuit further comprises: first resistor and first capacitor；
First termination protecting field of the first resistor, the first of the second end of the first resistor and the first capacitor
End is connected, the second termination direct current of the first capacitor.
Further,
The circuit further comprises: the second varistor；
The first end of second varistor is connected with the cathode of the first diode, second varistor
Second end is connected with the cathode of the 4th diode.
Further,
The circuit further comprises: third varistor；
The first end of the third varistor is connected with the zero curve, the second end of the third varistor with it is described
Firewire is connected.
Further,
The circuit further comprises: the 4th varistor and the 5th varistor；
The first end of 4th varistor is connected with the zero curve, the second end of the 4th varistor with it is described
The first end of 5th varistor is connected, and the second end of the 5th varistor is connected with the firewire.
Further,
The circuit further comprises: gas-discharge tube；
First termination protecting field of the gas-discharge tube, the second end of the gas-discharge tube and the 4th pressure-sensitive electricity
The second end of resistance is connected.
Further,
The circuit further comprises: the second capacitor, third capacitor, the 4th capacitor and the 5th capacitor；
The first end of second capacitor is connected with the cathode of the first diode, the second termination of second capacitor
Protecting field；
The first end of the third capacitor is connected with the second end of second capacitor, the second end of the third capacitor with
The cathode of 4th diode is connected；
The first end of 4th capacitor is connected with the cathode of the first diode, the second termination of the 4th capacitor
Protecting field；
The first end of 5th capacitor is connected with the second end of the 4th capacitor, the second end of the 5th capacitor with
The cathode of 4th diode is connected.
Further,
The circuit further comprises: second resistance, 3rd resistor and the 4th resistance；
The first end of the second resistance is connected with the cathode of the first diode, the second end of the second resistance with
The first end of the 3rd resistor is connected, and the second end of the 3rd resistor is connected with the first end of the 4th resistance, described
The second end of 4th resistance is connected with the cathode of the 4th diode.
Further,
The circuit further comprises: relay and thermistor；
The first coil pin of the relay connects to be connected with external controller, the second coil pin of the relay
Connect DC voltage；
The first switch pin of the relay is connected with the first end of the thermistor, and the second of the relay opens
Pin is closed to be connected with the second end of the thermistor；
The thermistor is connected on the firewire.
Further,
The circuit further comprises: filter inductance；
The first end of first side of the filter inductance is connected with the zero curve, and the second of the first side of the filter inductance
End is connected with the cathode of the first diode；
The first end of second side of the filter inductance is connected with the firewire, and the second of second side of the filter inductance
End is connected with the cathode of the 4th diode.
Further,
The circuit further comprises: fuse；
The fuse is connected on the firewire.
Further,
The circuit further comprises: at least one filter capacitor:
The first end of each filter capacitor is connected with the zero curve, and second end is connected with the firewire.
In embodiments of the present invention, the first pressure is provided between the anode of the 4th diode and the cathode of the 4th diode
Quick resistance, with connecing direct current by the anode of the 4th diode, it is, by the second termination direct current of the first varistor, working as electricity
When over-voltage is born on road, the first varistor carries out voltage clamping, absorbs extra electric current to protect other devices on circuit, the
The response of one varistor is very fast, greatly improves the effect of Anti-surging.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is the present invention
Some embodiments for those of ordinary skill in the art without creative efforts, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 is a kind of circuit diagram of the circuit for Anti-surging that one embodiment of the invention provides；
Fig. 2 is the circuit diagram of the circuit for another Anti-surging that one embodiment of the invention provides.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments, based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
As shown in Figure 1, the embodiment of the invention provides a kind of circuits of Anti-surging, comprising:
First diode D1, the second diode D2, third diode D3, the 4th diode D4 and the first varistor RV1；
The anode of the first diode D1 is connected with the anode of the 4th diode D4, the first diode D1's
Cathode is connected with the anode of the second diode D2, and the cathode of the second diode D2 is negative with the third diode D3's
Extremely it is connected, the anode of the third diode D3 is connected with the cathode of the 4th diode D4；
The cathode of the first diode D1 is connected with zero curve, and the cathode of the 4th diode D4 is connected with firewire；
The first end of the first varistor RV1 is connected with the cathode of the 4th diode D4, and described first is pressure-sensitive
The second end of resistance RV1 is connected with the anode of the 4th diode D4；
The anode of the 4th diode D4 is with connecing direct current.
In embodiments of the present invention, the first pressure is provided between the anode of the 4th diode and the cathode of the 4th diode
Quick resistance, with connecing direct current by the anode of the 4th diode, it is, by the second termination direct current of the first varistor, working as electricity
When over-voltage is born on road, the first varistor carries out voltage clamping, absorbs extra electric current to protect other devices on circuit, the
The response of one varistor is very fast, greatly improves the effect of Anti-surging.
In an embodiment of the present invention, which further comprises: first resistor and first capacitor；
First termination protecting field of the first resistor, the first of the second end of the first resistor and the first capacitor
End is connected, the second termination direct current of the first capacitor.
In embodiments of the present invention, first resistor and first capacitor composition RC circuit pass through RC under common mode surge voltage
Circuit charges to first capacitor, when the voltage of first capacitor rises to the clamp voltage of the first varistor, the first varistor
Carry out voltage clamping, the rectifier bridge (rectification being made of first diode, the second diode, third diode and the 4th diode
Bridge) each diode will not be breakdown because of backward voltage, realize be directed to common mode surge Anti-surging, meanwhile, also to EMI
(Electromagnetic Interference, electromagnetic interference) disturbance voltage has improvement, and then guarantees EMC (Electro
Magnetic Compatibility, Electro Magnetic Compatibility) test have bigger allowance.
Wherein, which can be power resistor, and the power of first resistor is larger, can be 2w, 3w etc..
In an embodiment of the present invention, which further comprises: the second varistor；
The first end of second varistor is connected with the cathode of the first diode, second varistor
Second end is connected with the cathode of the 4th diode.
In embodiments of the present invention, the second varistor connects in the front end of rectifier bridge, realizes needle by the second varistor
To the Anti-surging of differential mode surge.
In an embodiment of the present invention, which further comprises: third varistor；
The first end of the third varistor is connected with the zero curve, the second end of the third varistor with it is described
Firewire is connected.
In embodiments of the present invention, third varistor connects the input in zero curve and firewire, passes through third varistor
Realize the Anti-surging for being directed to differential mode surge.
When existing simultaneously the second varistor and third varistor in circuit, may be implemented to protect the bilayer of circuit
Shield, substantially increases the effect of Anti-surging.
In an embodiment of the present invention, which further comprises: the 4th varistor and the 5th varistor；
The first end of 4th varistor is connected with the zero curve, the second end of the 4th varistor with it is described
The first end of 5th varistor is connected, and the second end of the 5th varistor is connected with the firewire.
In embodiments of the present invention, the input terminal of zero curve and firewire is arranged in the 4th varistor and the 5th varistor,
The effect of Anti-surging can be further increased by the 4th varistor and the 5th varistor.
In an embodiment of the present invention, which further comprises: gas-discharge tube；
First termination protecting field of the gas-discharge tube, the second end of the gas-discharge tube and the 4th pressure-sensitive electricity
The second end of resistance is connected.
In embodiments of the present invention, when the voltage at gas-discharge tube both ends reaches the gas breakdown made in gas-discharge tube
When, gas-discharge tube starts to discharge, and becomes low-resistance by high resistant, so that the voltage at gas-discharge tube both ends is no more than breakdown voltage, leads to
It crosses gas-discharge tube surge energy is released, further improves the effect of Anti-surging.
Because there is delay in gas-discharge tube, when generating surge voltage, faster first varistor of response,
4th varistor, the 5th varistor can carry out in time voltage clamping, and later, gas-discharge tube starts working, will be unrestrained
It gushes energy to release, gas-discharge tube is matched with the first varistor, the 4th varistor, the 5th varistor, Neng Gou great
The big effect for improving Anti-surging.
In an embodiment of the present invention, which further comprises: the second capacitor, third capacitor, the 4th capacitor and the 5th
Capacitor；
The first end of second capacitor is connected with the cathode of the first diode, the second termination of second capacitor
Protecting field；
The first end of the third capacitor is connected with the second end of second capacitor, the second end of the third capacitor with
The cathode of 4th diode is connected；
The first end of 4th capacitor is connected with the cathode of the first diode, the second termination of the 4th capacitor
Protecting field；
The first end of 5th capacitor is connected with the second end of the 4th capacitor, the second end of the 5th capacitor with
The cathode of 4th diode is connected.
In embodiments of the present invention, circuit can reduce by the second capacitor, third capacitor, the 4th capacitor and the 5th capacitor
In EMI disturbance voltage and disturbance power, improve the anti-interference ability of circuit.
In an embodiment of the present invention, which further comprises: second resistance, 3rd resistor and the 4th resistance；
The first end of the second resistance is connected with the cathode of the first diode, the second end of the second resistance with
The first end of the 3rd resistor is connected, and the second end of the 3rd resistor is connected with the first end of the 4th resistance, described
The second end of 4th resistance is connected with the cathode of the 4th diode.
In embodiments of the present invention, second resistance, 3rd resistor and the 4th resistance are discharge resistance after power-off, disconnected in circuit
After electricity, the electric energy in each capacitor of circuit can be discharged, be ensure that by second resistance, 3rd resistor and the 4th resistance
The safety of circuit.
In an embodiment of the present invention, which further comprises: relay and thermistor；
The first coil pin of the relay connects to be connected with external controller, the second coil pin of the relay
Connect DC voltage；
The first switch pin of the relay is connected with the first end of the thermistor, and the second of the relay opens
Pin is closed to be connected with the second end of the thermistor；
The thermistor is connected on the firewire.
In embodiments of the present invention, the original state of relay is the state disconnected, after firewire and zero curve are powered, temperature-sensitive
Resistance plays the role of Anti-surging, and the electric signal after rectifier bridge rectification is exported to controller, and controller powers on, and controller can be just
Often work, when controller sends control signal to the first coil pin of relay, so that relay closes the switch, it will be hot
Quick resistive short avoids thermistor consumption electric energy from impacting subsequent conditioning circuit.
It can be realized the function of soft start by relay and thermistor.
In an embodiment of the present invention, which further comprises: filter inductance；
The first end of first side of the filter inductance is connected with the zero curve, and the second of the first side of the filter inductance
End is connected with the cathode of the first diode；
The first end of second side of the filter inductance is connected with the firewire, and the second of second side of the filter inductance
End is connected with the cathode of the 4th diode.
In embodiments of the present invention, it can be realized the effect of filtering by filter inductance.
In an embodiment of the present invention, which further comprises: fuse；
The fuse is connected on the firewire.
In embodiments of the present invention, the effect of Anti-surging can be further increased by fuse.
In an embodiment of the present invention, which further comprises: at least one filter capacitor:
The first end of each filter capacitor is connected with the zero curve, and second end is connected with the firewire.
In embodiments of the present invention, the filtering processing to the electric signal in circuit may be implemented by each filter capacitor.
It specifically, may include four filter capacitors, filter capacitor can connect the input in zero curve and firewire, can also connect and rectify
Bridge end.
As shown in Fig. 2, the embodiment of the invention provides a kind of circuits of Anti-surging, comprising:
First diode D1, the second diode D2, third diode D3, the 4th diode D4, the first varistor RV1,
Second varistor RV2, third varistor RV3, the 4th varistor RV4, the 5th varistor RV5, thermistor RT,
One resistance R1, second resistance R2,3rd resistor R3, the 4th resistance R4, first capacitor C1, the second capacitor C2, third capacitor C3,
Four capacitor C4, the 5th capacitor C5, the first filter capacitor C6, the second filter capacitor C7, third filter capacitor C8, the 4th filter capacitor
C9, gas-discharge tube SG, relay K, filter inductance L and fuse F.
The anode of first diode D1 is connected with the anode of the 4th diode D4, the cathode of first diode D1 and the two or two
The anode of pole pipe D2 is connected, and the cathode of the second diode D2 is connected with the cathode of third diode D3, and third diode D3 is just
Pole is connected with the cathode of the 4th diode D4, the anode of the 4th diode D4 with connecing direct current GND；
The first end of fuse F is connected with firewire AC_L, the second end and the first end phase of thermistor RT of fuse F
Even；
The first end of the first side of filter inductance L is connected with zero curve AC_N, the second end of the first side of filter inductance L and the
The cathode of one diode D1 is connected；The first end of second side of filter inductance L is connected with the second end of thermistor RT, filtered electrical
The second end for feeling second side of L is connected with the cathode of the 4th diode D4；
The first coil pin of relay K connects to be connected with external controller, and the second coil pin of relay K connects direct current
The first switch pin of voltage, relay K is connected with the first end of thermistor RT, the second switch pin and heat of relay K
The second end of quick resistance RT is connected, and the first end of thermistor RT is connected with the second end of fuse F；
The first end of first varistor RV1 is connected with the cathode of the 4th diode D4, and the second of the first varistor RV1
End is connected with the anode of the 4th diode D4；
The first termination protecting field PE of first resistor R1, the second end and the first end phase of first capacitor C1 of first resistor R1
Even, the second termination direct current ground GND of first capacitor C1；
The first end of second varistor RV2 is connected with the cathode of first diode D1, and the second of the second varistor RV2
End is connected with the cathode of the 4th diode D4；
The first end of third varistor RV3 is connected with zero curve AC_N, the second end and fuse of third varistor RV3
The second end of F is connected；
The first end of 4th varistor RV4 is connected with zero curve AC_N, the second end of the 4th varistor RV4 and the 5th pressure
The first end of quick resistance RV5 is connected, and the second end of the 5th varistor RV5 is connected with the second end of third varistor RV3；
The first termination protecting field PE of gas-discharge tube SG, the second end of gas-discharge tube SG and the 4th varistor RV4
Second end be connected；
The first end of second capacitor C2 is connected with the cathode of first diode D1, the second termination protecting field of the second capacitor C2
PE, the first end of third capacitor C3 are connected with the second end of the second capacitor C2, the second end and the 4th diode of third capacitor C3
The cathode of D4 is connected, and the first end of the 4th capacitor C4 is connected with the cathode of first diode D1, the second termination of the 4th capacitor C4
Protecting field PE, the first end of the 5th capacitor C5 are connected with the second end of the 4th capacitor C4, the second end and the 4th of the 5th capacitor C5
The cathode of diode D4 is connected；
The first end of second resistance R2 is connected with the cathode of first diode D1, second end and the third electricity of second resistance R2
The first end for hindering R3 is connected, and the second end of 3rd resistor R3 is connected with the first end of the 4th resistance R4, and the second of the 4th resistance R4
End is connected with the cathode of the 4th diode D4；
The first end of first filter capacitor C6 is connected with zero curve AC_N, the second end of the first filter capacitor C6 and the 5th pressure-sensitive
The second end of resistance RV5 is connected, and the first end of the second filter capacitor C7 is connected with the cathode of first diode D1, the second filtered electrical
The second end for holding C7 is connected with the cathode of the 4th diode D4, the first end of third filter capacitor C8 and bearing for first diode D1
Extremely it is connected, the second end of third filter capacitor C8 is connected with the cathode of the 4th diode D4, the first end of the 4th filter capacitor C9
It is connected with the cathode of first diode D1, the second end of the 4th filter capacitor C9 is connected with the cathode of the 4th diode D4.
In embodiments of the present invention, the first filter capacitor C6, filter inductance L, the second filter capacitor C7, third filter capacitor
C8 may be constructed EMI filter circuit.
In embodiments of the present invention, for differential mode surge, using the second varistor RV2 and third varistor RV3 into
Row two class protection.For to common mode surge, protected using the first varistor RV1, first capacitor C1 and first resistor R1.
In embodiments of the present invention, when surge voltage passes through third varistor RV3, third varistor RV3 is carried out
Protection absorbs, and generates a clamp voltage, and after EMI filter circuit, surge voltage reaches the second varistor RV2, into one
Step carries out protection absorption, surge voltage is limited in the range of can bearing, greatly improves antisurge by two class protection
Effect.
When firewire generates surge voltage over the ground, because there is delay, gas-discharge tube SG in gas-discharge tube SG
Not work at once, the RC formed between firewire and the anode of the 4th diode D4 by first resistor R1 and first capacitor C1
Circuit forms voltage, carries out voltage clamping when voltage reaches the first varistor RV1 pressure sensitive voltage, it is ensured that the intact nothing of rectifier bridge
Damage, gas-discharge tube SG work, surge energy are released, do not influence on rectifier bridge output cathode, firewire is to whole first
Stream output is without backward dioded problem, secondly, rectification anode output is to the earth almost without circuit.
When zero curve generates surge voltage over the ground, since gas-discharge tube SG has a delay, surge voltage is from the
The RC circuit that one resistance R1 and first capacitor C1 are formed is then return to zero curve to the first varistor RV1, first pressure-sensitive due to having
The protection of resistance RV1, arranging bridge will not damage, and then gas-discharge tube SG works, and surge energy is released.
In embodiments of the present invention, each varistor can be 561K Ω, and pressure sensitive voltage is the varistor of 560v.Pressure
Quick voltage may be 620v, 680v etc., choose as needed.
In embodiments of the present invention, each capacitor can select the capacitor less than or equal to 0.01uF.
The embodiment of the invention provides a kind of circuits of Anti-surging, and Surge handling capability can be promoted to differential mode 2KV between phase line,
Common mode 4KV between phase ground reaches test class 4.
A kind of circuit of Anti-surging provided in an embodiment of the present invention, while can obtain good Anti-surging effect,
The cost of implementation of the circuit of the Anti-surging is also very low.
The embodiment of the present invention can greatly improve Anti-surging effect in the case where low cost, greatly enhance anti-lightning energy
Power improves product reliability.
The embodiment of the present invention improve a kind of Anti-surging circuit be suitable for convertible frequency air-conditioner etc. equipment.
The each embodiment of the present invention at least has the following beneficial effects:
1, first in embodiments of the present invention, is provided between the anode of the 4th diode and the cathode of the 4th diode
Varistor, with connecing direct current by the anode of the 4th diode, it is, by the second termination direct current of the first varistor, when
When circuit bears over-voltage, the first varistor carries out voltage clamping, absorbs extra electric current to protect other devices on circuit,
The response of first varistor is very fast, greatly improves the effect of Anti-surging.
2, in embodiments of the present invention, since gas-discharge tube has delay, when generating surge voltage, response
Faster first varistor, the 4th varistor, the 5th varistor can carry out in time voltage clamping, and later, gas is put
Fulgurite starts working, and surge energy is released, gas-discharge tube and the first varistor, the 4th varistor, the 5th pressure
Quick resistance matches, and can greatly improve the effect of Anti-surging.
3, the second varistor and third varistor in embodiments of the present invention, are existed simultaneously in circuit, pass through third
Varistor realizes the surging prevention of the first order, and the surging prevention of the second level is realized by the second varistor, by the
Two varistors and third varistor realize two-stage surging prevention, substantially increase the effect of Anti-surging.
It should be noted that, in this document, such as first and second etc relational terms are used merely to an entity
Or operation is distinguished with another entity or operation, is existed without necessarily requiring or implying between these entities or operation
Any actual relationship or order.Moreover, the terms "include", "comprise" or its any other variant be intended to it is non-
It is exclusive to include, so that the process, method, article or equipment for including a series of elements not only includes those elements,
It but also including other elements that are not explicitly listed, or further include solid by this process, method, article or equipment
Some elements.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including
There is also other identical factors in the process, method, article or equipment of the element.
Those of ordinary skill in the art will appreciate that: realize that all or part of the steps of above method embodiment can pass through
The relevant hardware of program instruction is completed, and program above-mentioned can store in computer-readable storage medium, the program
When being executed, step including the steps of the foregoing method embodiments is executed；And storage medium above-mentioned includes: ROM, RAM, magnetic disk or light
In the various media that can store program code such as disk.
Finally, it should be noted that the foregoing is merely presently preferred embodiments of the present invention, it is merely to illustrate skill of the invention
Art scheme, is not intended to limit the scope of the present invention.Any modification for being made all within the spirits and principles of the present invention,
Equivalent replacement, improvement etc., are included within the scope of protection of the present invention.
Claims (10)
1. a kind of circuit of Anti-surging characterized by comprising
First diode, the second diode, third diode, the 4th diode and the first varistor；
The first diode anode be connected with the anode of the 4th diode, the cathode of the first diode with it is described
The anode of second diode is connected, and the cathode of second diode is connected with the cathode of the third diode, the third
The anode of diode is connected with the cathode of the 4th diode；
The cathode of the first diode is connected with zero curve, and the cathode of the 4th diode is connected with firewire；
The first end of first varistor is connected with the cathode of the 4th diode, and the second of first varistor
End is connected with the anode of the 4th diode；
The anode of 4th diode is with connecing direct current.
2. circuit according to claim 1, which is characterized in that
Further comprise: first resistor and first capacitor；
First termination protecting field of the first resistor, the first end phase of the second end of the first resistor and the first capacitor
Connect, the second termination direct current of the first capacitor.
3. circuit according to claim 1, which is characterized in that
Further comprise: the second varistor；
The first end of second varistor is connected with the cathode of the first diode, and the second of second varistor
End is connected with the cathode of the 4th diode.
4. circuit according to claim 1, which is characterized in that
Further comprise: third varistor；
The first end of the third varistor is connected with the zero curve, the second end of the third varistor and the firewire
It is connected.
5. circuit according to claim 1, which is characterized in that
Further comprise: the 4th varistor and the 5th varistor；
The first end of 4th varistor is connected with the zero curve, the second end and the described 5th of the 4th varistor
The first end of varistor is connected, and the second end of the 5th varistor is connected with the firewire.
6. circuit according to claim 5, which is characterized in that
Further comprise: gas-discharge tube；
First termination protecting field of the gas-discharge tube, the second end of the gas-discharge tube and the 4th varistor
Second end is connected.
7. circuit according to claim 1, which is characterized in that
Further comprise: the second capacitor, third capacitor, the 4th capacitor and the 5th capacitor；
The first end of second capacitor is connected with the cathode of the first diode, the second termination protection of second capacitor
Ground；
The first end of the third capacitor is connected with the second end of second capacitor, the second end of the third capacitor with it is described
The cathode of 4th diode is connected；
The first end of 4th capacitor is connected with the cathode of the first diode, the second termination protection of the 4th capacitor
Ground；
The first end of 5th capacitor is connected with the second end of the 4th capacitor, the second end of the 5th capacitor with it is described
The cathode of 4th diode is connected.
8. circuit according to claim 1, which is characterized in that
Further comprise: second resistance, 3rd resistor and the 4th resistance；
The first end of the second resistance is connected with the cathode of the first diode, the second end of the second resistance with it is described
The first end of 3rd resistor is connected, and the second end of the 3rd resistor is connected with the first end of the 4th resistance, and the described 4th
The second end of resistance is connected with the cathode of the 4th diode.
9. circuit according to claim 1, which is characterized in that
Further comprise: relay and thermistor；
The first coil pin of the relay connects to be connected with external controller, and the second coil pin of the relay connects directly
Galvanic electricity pressure；
The first switch pin of the relay is connected with the first end of the thermistor, and the second switch of the relay draws
Foot is connected with the second end of the thermistor；
The thermistor is connected on the firewire.
10. any circuit in -9 according to claim 1, which is characterized in that
Further comprise: filter inductance；
The first end of first side of the filter inductance is connected with the zero curve, the second end of the first side of the filter inductance with
The cathode of the first diode is connected；
The first end of second side of the filter inductance is connected with the firewire, the second end of second side of the filter inductance with
The cathode of 4th diode is connected；
And/or
Further comprise: fuse；
The fuse is connected on the firewire；
And/or
Further comprise: at least one filter capacitor:
The first end of each filter capacitor is connected with the zero curve, and second end is connected with the firewire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810924402.9A CN109066636B (en) | 2018-08-14 | 2018-08-14 | Anti-surge circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810924402.9A CN109066636B (en) | 2018-08-14 | 2018-08-14 | Anti-surge circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109066636A true CN109066636A (en) | 2018-12-21 |
| CN109066636B CN109066636B (en) | 2020-06-09 |
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ID=64683899
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810924402.9A Active CN109066636B (en) | 2018-08-14 | 2018-08-14 | Anti-surge circuit |
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| Country | Link |
|---|---|
| CN (1) | CN109066636B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110247543A (en) * | 2019-06-21 | 2019-09-17 | 秦皇岛尼特智能科技有限公司 | A kind of circuit for reinforcing conduction interference immunity to interference in fire-fighting bus |
| CN113078025A (en) * | 2021-03-19 | 2021-07-06 | 苏州贝昂科技有限公司 | Gear switching circuit |
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| CN102185698A (en) * | 2011-04-11 | 2011-09-14 | 成都市华为赛门铁克科技有限公司 | Ethernet power supply port protective circuit and ethernet power supply equipment |
| CN201985520U (en) * | 2011-02-01 | 2011-09-21 | 中兴通讯股份有限公司 | Alternating current line lightning protection device |
| CN206164354U (en) * | 2016-10-19 | 2017-05-10 | 东莞市乐丰电器科技有限公司 | Power lightning protection circuit and power adapter |
| CN207039181U (en) * | 2017-05-10 | 2018-02-23 | 深圳欧陆通电子有限公司 | A kind of anti-lightning strike potential circuit, driving power and terminal |
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2018
- 2018-08-14 CN CN201810924402.9A patent/CN109066636B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201985520U (en) * | 2011-02-01 | 2011-09-21 | 中兴通讯股份有限公司 | Alternating current line lightning protection device |
| CN102185698A (en) * | 2011-04-11 | 2011-09-14 | 成都市华为赛门铁克科技有限公司 | Ethernet power supply port protective circuit and ethernet power supply equipment |
| CN206164354U (en) * | 2016-10-19 | 2017-05-10 | 东莞市乐丰电器科技有限公司 | Power lightning protection circuit and power adapter |
| CN207039181U (en) * | 2017-05-10 | 2018-02-23 | 深圳欧陆通电子有限公司 | A kind of anti-lightning strike potential circuit, driving power and terminal |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110247543A (en) * | 2019-06-21 | 2019-09-17 | 秦皇岛尼特智能科技有限公司 | A kind of circuit for reinforcing conduction interference immunity to interference in fire-fighting bus |
| CN113078025A (en) * | 2021-03-19 | 2021-07-06 | 苏州贝昂科技有限公司 | Gear switching circuit |
| CN113078025B (en) * | 2021-03-19 | 2022-04-29 | 苏州贝昂科技有限公司 | Gear switching circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109066636B (en) | 2020-06-09 |
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