CN203536955U - Multifunctional spike suppressor - Google Patents
Multifunctional spike suppressor Download PDFInfo
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- CN203536955U CN203536955U CN201320715737.2U CN201320715737U CN203536955U CN 203536955 U CN203536955 U CN 203536955U CN 201320715737 U CN201320715737 U CN 201320715737U CN 203536955 U CN203536955 U CN 203536955U
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Abstract
The utility model discloses a multifunctional spike suppressor. The multifunctional spike suppressor comprises a lightning surge absorption circuit, an electrical fast transient burst suppression circuit and a metal shielding case. The lightning surge absorption circuit comprises voltage dependent resistors. The electrical fast transient burst suppression circuit comprises common mode inductors, differential mode inductors and safety capacitors. One end of the absorption circuit is connected with an input end of a power supply, and the other end of the absorption circuit is connected with an input end of the suppression circuit. The lightning surge absorption circuit composed of three voltage dependent resistors which are connected in parallel is arranged on the input end of the power supply. The safety capacitors are parallelly connected in front of and at the back of the common mode inductors and the differential mode inductors. The multifunctional spike suppressor solves the defects of the prior art in which a discharge tube is adopted for absorption, so that the problems of high igniting voltage, relatively high residual voltage, long response time (no shorter than 100ns), relatively low action voltage precision, chronic air leakage, photosensitive effect, high discreteness and the like are effectively avoided, and the damage of the spike voltage to the subsequent equipment is effectively suppressed.
Description
Technical field
The utility model relates to a kind of multi-functional Spike-killers, specifically, relate to a kind ofly for suppressing lightning surge (impact), disturb, electrical fast transient (eft) disturbs, and has the device of input filter function.
Background technology
Thunderbolt is very common physical phenomenon, and according to statistics, there is more than 40,000 thunderstorm center in the whole world, and every day, nearly 800 ten thousand thunderbolts occurred, and this means and had 100 thunderbolts each second at least.In addition, the switch motion in transmission line also can produce many high-octane pulses.They have a great impact the reliability of electronic equipment.For this reason, many worlds and domestic standard are all mentioned and will be carried out lightning surge test.Lightning surge (impact) immunity experiment is the voltage and current surge causing in the analog machine thunderbolt that may run under varying environment and mounting condition or switching over process.Be used for power line, the input/output line of the equipment of evaluating, and communication line is being subjected to the antijamming capability of high energy pulse while disturbing.Meanwhile, electrical fast transient (eft) immunity experiment, object is to verify the antijamming capability of the ringing being caused by lightning, earth fault or switching inductive load.This test is that a kind of impulse train being comprised of many fast transient pulses being coupled on power circuit, control circuit, signal line is tested.For above-mentioned perturbed problem, conventional approach is at power supply or equipment entrance, to increase gas discharge tube to absorb, although that this scheme has the electric current of bearing is large, insulation resistance is high, and leakage current is little, the advantage that parasitic capacitance is little.But it is high that shortcoming is ignition voltage, and residual voltage is higher, in the reaction time slow (>=100 ns), operation voltage precision is lower, can chronic leakage, have light sensitive effect, discreteness large.And have follow current (afterflow), if the time of follow current is longer, can guiding discharge pipe contact burn rapidly, thereby shorten life-span of discharge tube, and to electrical fast transient burst disturbance fluctuation without any inhibitory action.
Utility model content
The purpose of this utility model is to provide a kind of for suppressing lightning surge (impact) interference, electrical fast transient (eft) interference for above-mentioned defect, and has the multi-functional peak restrained device of input filter function.
The technical solution of the utility model is:
A multi-functional Spike-killers, comprises lightning surge absorbing circuit, and electrical fast transient (eft) suppresses circuit, metal shielding, and described lightning surge absorbing circuit comprises the first piezo-resistance RV1, the second piezo-resistance RV2, the 3rd piezo-resistance RV3; Electrical fast transient (eft) suppresses circuit and comprises the first common mode inductance L1, the second common mode inductance L2, the first differential mode inductance L3, the second differential mode inductance L4, safety electric capacity (C1, C2, C3, C4, C5, C6), one end of absorbing circuit is connected with power input, the other end is connected with the input that suppresses circuit, in power input setting by three piezo-resistances the lightning surge Interference absorb circuit that connects, before and after common mode inductance and differential mode inductance and connect safety electric capacity.
Described piezo-resistance is metal oxide piezo-resistance.
Described metal oxide piezo-resistance is Zinc-oxide piezoresistor.
Described inhibitor is provided with direct-flow input end mouth and/or ac input end mouth.
Piezo-resistance model is chosen for: MYG14-561.
The inductance value of common mode inductance is 10mH, and the inductance value of differential mode inductance is 10mH.
The model of described safety capacitor C 1 is ECQU2A105ML, and parameter is 275V 1uF, and the model of safety capacitor C 2 and safety capacitor C 3 is ECQU2A104KL, and parameter is 275V 0.1uF; The model of safety capacitor C 5 and safety capacitor C 6 is AC10F222ML7, and parameter is 275V 2200pF.
The beneficial effects of the utility model are to adopt the circuit design being suppressed in conjunction with inductance by peak restrained components and parts, there is filter action simultaneously, it is a kind of multi-functional Spike-killers, solved that traditional inhibition methodological function is single, poor reliability, can not to take into account ignition voltage high, residual voltage is higher, and in the reaction time slow (>=100 ns), operation voltage precision is lower, can chronic leakage, have the problems such as light sensitive effect, discreteness are large, effectively suppressed the harm of peak voltage to successor devices.
The utility model mainly for national standard be:
GB/T 17626.4-1998 electrical fast transient (eft) immunity experiment;
GB/T 17626.5-1999 surge (impact) immunity experiment.
Accompanying drawing explanation
Fig. 1 is the utility model theory diagram.
Fig. 2 is the application principle figure of the utility model in alternating current circuit.
Fig. 3 is the application principle figure of the utility model in DC circuit.
Embodiment
Below in conjunction with accompanying drawing, the utility model will be further described.
The multi-functional Spike-killers of the utility model, comprises that lightning surge (impact) Interference absorb device, electrical fast transient (eft) noise killer part and filter circuit form; Lightning surge in circuit (impact) Interference absorb device has mainly adopted metal oxide piezo-resistance, piezo-resistance is mainly comprised of zinc oxide material, belong to Clamp device, its characteristic is closely similar with two back-to-back voltage-stabiliser tubes that connect, and has the response speed of ns.Piezo-resistance is directly proportional to its volume to the absorbability of transient signal: its thickness is proportional to voltage; Area is proportional to electric current.Piezo-resistance is most popular surge suppression device in electronic product at present.When the voltage in piezo-resistance surpasses certain amplitude, the resistance of resistance significantly reduces, thereby surge energy is released.Under surge voltage effect, the voltage in the piezo-resistance after conducting (being commonly referred to as clamping voltage), the electric current that equals to flow through piezo-resistance is multiplied by the resistance of piezo-resistance, therefore at the peak value place of surge current clamping voltage, reaches the highest.Make circuit there is voltage range very wide, can be from several volts to several kilovolts; Absorbing surge current can be from tens to several kiloamperes, and reaction speed is fast, nonpolarity, without afterflow, and the feature such as peak current ability to bear is larger, and price is low.
The inductive circuit that electrical fast transient (eft) noise killer part is mainly comprised of common mode inductance and differential mode inductance suppresses, and has jointly formed filter circuit with safety electric capacity simultaneously, further to effectively isolating between interference and equipment.
1, operation principle
The angle that circuit of the present utility model disturbs from suppressing transition, pressure sensitive voltage will reduce to approach the operating voltage of protected circuit as far as possible; From improving component life, pull open again both gaps.General compromise Choice is: to alternate current operation circuit, pressure sensitive voltage value is operating voltage 2.5 times; To DC working circuit, pressure sensitive voltage value is operating voltage 1.5 times.The generation that electrical fast transient (eft) disturbs is due in circuit, and the switching of mechanical switch to inductive load conventionally can produce and disturb other Electrical and Electronic equipment of same circuit.The feature that this class is disturbed is: pulse occurs in groups, the repetition rate of pulse is higher, rise time impulse waveform energy of short duration, individual pulse is lower.In practice, because electrical fast transient (eft) causes the probability of equipment fault less, due to the build-up effect of impulse train to line distribution capacitance energy, when energy accumulation just may cause circuit (and even equipment) miswork to a certain extent.Make the situation of equipment generation misoperation often visible, unless there is suitable countermeasure, otherwise more difficult passing through.Circuit of the present utility model adopts the inductive circuit being comprised of common mode inductance and differential mode inductance effectively to suppress above-mentioned interference component.
2, the feature of device
The utility model patent, for several shortcomings of traditional use discharge tube inhibition method, has been carried out brand-new design and perfect.Thereby effectively avoided ignition voltage high, residual voltage is higher, in the reaction time slow (>=100 ns), operation voltage precision is lower, can chronic leakage, have problems such as light sensitive effect, discreteness are large.Effectively suppressed the harm of peak voltage to successor devices.
The utility model patent adopts basic separate piece to form, and the Time Duration Error ability of whole circuit is also very strong, and the value of the corresponding device that only need calculate by former design theory assembles, and can meet the requirement of technical indicator.This circuit has higher Ability of Resisting Disturbance simultaneously, work that still can be stable.
The utility model patent, has autonomous type delay circuit, also has independently accessory power supply simultaneously, and groundwork state is not subject to the impact of rear class equipment.This has just widened the occasion of its application greatly.
As shown in Figure 1, multi-functional Spike-killers, comprises that lightning surge (impact) absorbs device, electrical fast transient (eft) suppression device and filter circuit and forms.Wherein RV1-RV4 is that lightning surge (impact) absorbs device; L1-L4 and C1-C6 are electrical fast transient (eft) suppression device, have filter action simultaneously, and in figure, dotted portion represents metal shielding, can greatly improve the filter effect of whole inhibitor.
The utility model process test of many times and application obtain components and parts optimal parameter and are:
RV1-RV4 components and parts model is chosen for: MYG14-561;
L1, L2 inductance value are chosen for: 10mH;
L3, L4 inductance value are chosen for: 10mH;
C1 components and parts model is chosen for: ECQU2A105ML(275V 1uF);
C2, C3 components and parts model are chosen for: ECQU2A104KL(275V 0.1uF);
C5, C6 components and parts model are chosen for: AC10F222ML7(275V 2200pF).
The utility model not only may be for the circuit (as shown in Figure 2) of ac-input type, and entering suitably adjustment also can have for direct-current input-type the circuit (as shown in Figure 3) of Spike-killers requirement.
Finally it should be noted that: obviously, above-described embodiment is only for the application's example is clearly described, and the not restriction to execution mode.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without also giving all execution modes.And the apparent variation of being amplified out thus or change are still among the protection range in the application's type.
Claims (7)
1. a multi-functional Spike-killers, comprises lightning surge absorbing circuit, and electrical fast transient (eft) suppresses circuit, metal shielding, is characterized in that, described lightning surge absorbing circuit comprises the first piezo-resistance RV1, the second piezo-resistance RV2, the 3rd piezo-resistance RV3; Electrical fast transient (eft) suppresses circuit and comprises the first common mode inductance L1, the second common mode inductance L2, the first differential mode inductance L3, the second differential mode inductance L4, safety electric capacity (C1, C2, C3, C4, C5, C6), one end of absorbing circuit is connected with power input, the other end is connected with the input that suppresses circuit, in power input setting by three piezo-resistances the lightning surge Interference absorb circuit that connects, before and after common mode inductance and differential mode inductance and connect safety electric capacity.
2. multi-functional Spike-killers according to claim 1, is characterized in that, described piezo-resistance is metal oxide piezo-resistance.
3. multi-functional Spike-killers according to claim 2, is characterized in that, described metal oxide piezo-resistance is Zinc-oxide piezoresistor.
4. according to the multi-functional Spike-killers described in claim 1,2 or 3, it is characterized in that, described inhibitor is provided with direct-flow input end mouth and/or ac input end mouth.
5. according to the multi-functional Spike-killers described in claim 1,2 or 3, it is characterized in that, piezo-resistance model is chosen for: MYG14-561.
6. according to the multi-functional Spike-killers described in claim 1,2 or 3, it is characterized in that, the inductance value of common mode inductance is 10mH, and the inductance value of differential mode inductance is 10mH.
7. according to the multi-functional Spike-killers described in claim 1,2 or 3, it is characterized in that, the model of described safety capacitor C 1 is ECQU2A105ML, and parameter is 275V 1uF, the model of safety capacitor C 2 and safety capacitor C 3 is ECQU2A104KL, and parameter is 275V 0.1uF; The model of safety capacitor C 5 and safety capacitor C 6 is AC10F222ML7, and parameter is 275V 2200pF.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320715737.2U CN203536955U (en) | 2013-11-14 | 2013-11-14 | Multifunctional spike suppressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320715737.2U CN203536955U (en) | 2013-11-14 | 2013-11-14 | Multifunctional spike suppressor |
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| Publication Number | Publication Date |
|---|---|
| CN203536955U true CN203536955U (en) | 2014-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320715737.2U Expired - Fee Related CN203536955U (en) | 2013-11-14 | 2013-11-14 | Multifunctional spike suppressor |
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| CN (1) | CN203536955U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105375457A (en) * | 2014-08-25 | 2016-03-02 | 潍坊学院 | LED streetlight four-stage lightning protection module |
| CN105743334A (en) * | 2016-03-29 | 2016-07-06 | 上海中科深江电动车辆有限公司 | Filtering circuit of low-voltage power supply loop |
| CN106026627A (en) * | 2016-06-30 | 2016-10-12 | 山东超越数控电子有限公司 | Method for improving surge immunity of switching power supply |
| CN108712088A (en) * | 2018-06-13 | 2018-10-26 | 深圳市海蕴新能源有限公司 | A kind of switching power circuit inhibiting EFT harassing and wrecking |
| CN109600035A (en) * | 2018-12-20 | 2019-04-09 | 郑州云海信息技术有限公司 | A kind of power module |
| CN111464037A (en) * | 2020-05-08 | 2020-07-28 | 西安锐晶微电子有限公司 | DC-DC converter with stronger interference resistance |
-
2013
- 2013-11-14 CN CN201320715737.2U patent/CN203536955U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105375457A (en) * | 2014-08-25 | 2016-03-02 | 潍坊学院 | LED streetlight four-stage lightning protection module |
| CN105743334A (en) * | 2016-03-29 | 2016-07-06 | 上海中科深江电动车辆有限公司 | Filtering circuit of low-voltage power supply loop |
| CN106026627A (en) * | 2016-06-30 | 2016-10-12 | 山东超越数控电子有限公司 | Method for improving surge immunity of switching power supply |
| CN108712088A (en) * | 2018-06-13 | 2018-10-26 | 深圳市海蕴新能源有限公司 | A kind of switching power circuit inhibiting EFT harassing and wrecking |
| CN109600035A (en) * | 2018-12-20 | 2019-04-09 | 郑州云海信息技术有限公司 | A kind of power module |
| CN111464037A (en) * | 2020-05-08 | 2020-07-28 | 西安锐晶微电子有限公司 | DC-DC converter with stronger interference resistance |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140409 Termination date: 20181114 |