WO2018090922A1 - 一种防雷电路及应用其的防雷电源 - Google Patents

一种防雷电路及应用其的防雷电源 Download PDF

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WO2018090922A1
WO2018090922A1 PCT/CN2017/111035 CN2017111035W WO2018090922A1 WO 2018090922 A1 WO2018090922 A1 WO 2018090922A1 CN 2017111035 W CN2017111035 W CN 2017111035W WO 2018090922 A1 WO2018090922 A1 WO 2018090922A1
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Prior art keywords
lightning protection
conductor
protection circuit
varistor
lightning
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PCT/CN2017/111035
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English (en)
French (fr)
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金松
熊代富
叶欣
马露丹
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英飞特电子(杭州)股份有限公司
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Publication of WO2018090922A1 publication Critical patent/WO2018090922A1/zh

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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H9/00Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
    • H02H9/04Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H9/00Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
    • H02H9/04Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
    • H02H9/06Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage using spark-gap arresters

Definitions

  • the present application relates to the field of lightning protection technology for circuits, and more particularly to a lightning protection circuit and a lightning protection power supply using the same.
  • the prior art solves the problem by adding a lightning protection circuit to the electrical equipment.
  • a lightning protection circuit can be added to the power supply.
  • the lightning protection circuit of the first type of power source or lamp is realized by using a gas discharge tube, but in order to ensure the creepage distance and the electrical distance, the gas discharge tube cannot be used as a carrier for double insulation or reinforced insulation, so when When the lightning protection circuit input terminal has double insulation requirements to the ground, the prior art lightning protection circuit is no longer applicable.
  • the present application provides a lightning protection circuit and a lightning protection power supply using the same, and the lightning protection circuit and the lightning protection power supply thereof can simultaneously meet the lightning protection requirements of the first type of power supply or the light source and the second type of power supply or Double insulation requirements for luminaires.
  • a lightning protection circuit comprising: a discharge needle and a varistor; wherein one end of the varistor is connected to a live wire or a neutral wire, and the other end of the varistor is connected through the discharge pin Land
  • the discharge needle includes: a first conductor and a second conductor disposed opposite to each other;
  • the spatial relative distance between the first conductor and the second conductor is set according to a lightning protection level
  • a pad pitch of the first conductor and the second conductor is set according to a creepage distance or an insulation level
  • a lightning strike voltage is greater than a sum of a trigger voltage of the varistor and a trigger voltage of the discharge needle, forming a relationship between the first conductor and the second conductor In the path, the varistor is also triggered to conduct, and the common mode lightning energy is discharged through the discharge needle and the varistor, thereby protecting the subsequent circuit.
  • the first conductor is a first discharge pin; the second conductor is a second discharge pin;
  • the tip of the first discharge pin is opposite to the tip of the second discharge pin, and the distance between the tips is set according to the relative distance of the space.
  • the first discharge pin and the second discharge pin are fixed by a base of the DuPont needle.
  • the first conductor and the second conductor are respectively pins of two electronic components.
  • the electronic component is a chip diode of an SMA, SMB or SMC package.
  • the lightning protection circuit further includes: another varistor;
  • Two varistors are connected in series between the live line and the neutral line, and the connection points of the two varistor are connected to the discharge needle;
  • the two varistor When differential mode lightning energy enters the lightning protection circuit, the two varistor are turned on to form a path between the live line and the neutral line.
  • the lightning protection circuit further includes:
  • gas discharge tube a gas discharge tube, the gas discharge tube being connected in series with the discharge needle.
  • the lightning protection circuit further includes:
  • One end of the third varistor is connected to the live wire, and the other end of the third varistor is connected to the neutral line.
  • the present application further provides a lightning protection power supply, comprising: the lightning protection circuit according to any one of the above.
  • the lightning protection circuit comprises: a varistor and a discharge needle, and the discharge needle comprises: a first set oppositely a conductor and a second conductor; wherein a spatial relative distance between the first conductor and the second conductor is set according to a lightning protection level; a pad pitch of the first conductor and the second conductor is according to a creepage distance Or insulation level setting.
  • the first conductor is disposed opposite to the second conductor, and the relative distance between the first conductor and the second conductor is set according to the lightning protection level, that is, the electrical distance is satisfied, and the lightning protection requirement is satisfied.
  • the pad pitch of the first conductor and the second conductor is set according to the creepage distance or the insulation level, that is, the pad pitch of the first conductor and the second conductor is set to be larger than the creepage distance to satisfy the requirement of double insulation.
  • the lightning protection circuit and the lightning protection power supply thereof provided by the application can simultaneously meet the lightning protection requirements of the first type of power source or the lamp and the double insulation requirements of the second type of power source or the lamp.
  • FIG. 1 is a schematic structural diagram of a lightning protection circuit provided by the prior art
  • FIG. 2 is a schematic structural diagram of a lightning protection circuit according to an embodiment of the present application.
  • FIG. 3 is a schematic structural diagram of another lightning protection circuit according to an embodiment of the present disclosure.
  • FIG. 4 is a schematic structural diagram of still another lightning protection circuit according to an embodiment of the present application.
  • the prior art lightning protection circuit shown in FIG. 1 is realized by using a gas discharge tube, but is applied to a power source or a lamp compatible with the first type of power source and the second type of power source.
  • the gas discharge tube When the gas discharge tube is used, the high-voltage type is required to meet the withstand voltage test of the circuit to the ground.
  • the gas discharge tube if a high-pressure gas discharge tube is selected, the starting point of the bleed energy is raised, and the rear-stage circuit cannot be effectively protected. .
  • the gas discharge tube cannot be used. It is a double-insulated carrier, so the lightning protection circuit using the gas discharge tube cannot meet the requirements of the double insulation of the second type of power supply.
  • the embodiment of the present application provides a lightning protection circuit
  • the lightning protection circuit includes: a discharge needle and a varistor; wherein one end of the varistor is connected to a live wire or a neutral wire, and the varistor is The other end is grounded through the discharge pin;
  • the discharge needle 21 includes a first conductor 22 and a second conductor 23 which are disposed opposite each other.
  • the spatial relative distance between the first conductor 22 and the second conductor 23 is set according to the lightning protection level.
  • the pad pitch of the first conductor 22 and the second conductor 23 is set according to the creepage distance or the insulation level.
  • the spatial relative distance between the first conductor 22 and the second conductor 23 is the shortest distance between the first conductor and the second conductor placed in the air.
  • the energy accumulated on the first conductor 22 and the second conductor 23 can be discharged. Therefore, in the absence of a lightning strike, the charge energy between the first conductor 22 and the second conductor 23 is insufficient to discharge the air between the two conductors that penetrate the relative distance of the space, and the first conductor 22 and the first The two conductors 23 correspond to an open circuit. Therefore, the leakage current of the circuit to the ground is effectively blocked, and the excessive leakage current is not generated by the addition of the discharge needle 21, thereby avoiding the danger of electric power caused by excessive leakage current.
  • the corresponding trigger voltage is also Differently, when the voltage between the first conductor 22 and the second conductor 23 is greater than the trigger voltage, the air between the first conductor 22 and the second conductor 23 can be broken, so that the first conductor 22 and the second conductor A passage is formed between the conductors 23 through the air.
  • the lightning protection circuit provided by the embodiment replaces the gas discharge tube given in the prior art by using a discharge needle, and the common mode lightning energy entering the lightning protection circuit is sufficient to break through the first conductor 22 and the second conductor.
  • the varistor the varistor 24 or 25 in FIG. 2 is turned on, The common mode lightning energy is discharged through the varistor and the discharge needle, thereby realizing the lightning protection function.
  • the lightning protection circuit provided by the embodiment is disposed opposite to the second conductor 23 by the first conductor 22, and the relative distance between the first conductor 22 and the second conductor 23 is set according to the lightning protection level, according to the creepage distance.
  • the insulation level is set to the pad spacing of the first conductor 22 and the second conductor 23, which can meet the lightning protection level requirement, meet the creepage distance or the insulation level requirement, and is compatible with the first type and the second type of power source or the lamp. Claim.
  • the first conductor 22 is a first discharge pin
  • the second conductor 23 is a second discharge pin
  • the tip of the first discharge pin and the second discharge pin are The needle tips are oppositely disposed, and the distance between the needle tip of the first discharge pin and the tip of the second discharge pin is set according to the relative distance of the space, that is, according to the lightning protection level required by the circuit, to meet the lightning protection requirement.
  • the first discharge pin and the second discharge pin are fixed by a base of the DuPont needle.
  • the distance between the first discharge needle and the base of the second discharge needle is set according to the creepage distance or the insulation level to meet the insulation requirement.
  • the first conductor 22 and the second conductor 23 are pins of two electronic components, and the pins of the two electronic components are oppositely disposed.
  • the relative distance between the pins of the two electronic components is set according to the required lightning protection level to meet the lightning protection requirements.
  • the electronic component is a chip diode in an SMA, SMB or SMC package. It should be noted that the present application includes but is not limited to the electronic component pins.
  • the lightning protection circuit further includes: another varistor.
  • varistor 24 and 25 in Fig. 2 are connected in series between the live line and the neutral line, and the connection point of the varistor 24 and 25 is connected to the discharge needle 21.
  • the specific principle is that the lightning protection circuit is in a high impedance state when there is no lightning occurrence; however, when differential mode lightning energy enters the lightning protection circuit, the varistor 24 and 25 are quickly turned on, in the fire. A path is formed between the line and the neutral line to prevent the differential mode lightning energy from continuing to be transmitted to the subsequent stage circuit, thereby protecting the rear stage circuit and the back end power device.
  • the varistor 24 and 25 are both quickly guided.
  • the discharge needle 21 the common mode lightning energy is discharged, thereby achieving the purpose of lightning protection, thereby protecting the rear stage circuit and the back end power equipment.
  • FIG. 3 is a schematic structural diagram of another lightning protection circuit according to an embodiment of the present application.
  • the lightning protection circuit further includes:
  • the gas discharge tube 31 is connected in series with the discharge needle 21.
  • the lightning protection level can be improved by adding the gas discharge tube 31.
  • FIG. 4 is a schematic structural diagram of another lightning protection circuit according to an embodiment of the present application.
  • the lightning protection circuit further includes:
  • the third varistor 41 has one end connected to the live line, and the other end of the third varistor 41 is connected to the neutral line.
  • a third varistor 41 is further added, and the trigger voltage value of the third varistor 41 is smaller than The sum of the trigger voltage values of the varistor 24 and 25.
  • the third varistor 41 is turned on in preference to the varistor 24 and 25 to ensure rapid discharge of the differential mode lightning energy.
  • the present application further provides a lightning protection power supply, and the lightning protection power supply includes the lightning protection circuit, and the lightning protection power supply is used to drive the electrical equipment, including but not limited to the LED driving power supply.

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  • Emergency Protection Circuit Devices (AREA)

Abstract

一种防雷电路及应用其的防雷电源,所述防雷电路包括:压敏电阻(24,25,41)和放电针(21),所述放电针(21)包括:相对设置的第一导体(22)和第二导体(23);其中,所述第一导体(22)和所述第二导体(23)之间的空间相对距离根据防雷等级设置;所述第一导体(22)和所述第二导体(23)的焊盘间距根据爬电距离或者绝缘等级设置;该防雷电路及应用其的防雷电源可以同时满足第一类电源的防雷要求和第二类电源的安规要求。

Description

一种防雷电路及应用其的防雷电源
本申请要求于2016年11月16日提交中国专利局、申请号为201621231615.6、发明名称为“一种防雷电路及应用其的防雷电源”的中国专利申请的优先权,其全部内容通过引用结合在本申请中。
技术领域
本申请涉及电路防雷保护技术领域,更具体地说,涉及一种防雷电路及应用其的防雷电源。
背景技术
目前,在人们的生活中,绝大多数用电设备使用公共电网进行供电,而公共电网又暴露在空气中,当有雷电发生时,雷电不仅会对输电线产生破坏,严重时还会损坏用电设备。为了防止雷电对用电设备的损坏,现有技术通过在用电设备中加入防雷电路来解决该问题,例如可以在电源内加入防雷电路。
在目前生活中,电源或灯具等产品大致分为两大类。其中,第一类(CLASSI)电源或灯具的防触电保护不仅依靠基本绝缘,并且将易触及的导电部件接地进行保护。第二类(CLASS II)电源或灯具不仅依靠基本绝缘,而且还具有附加安全措施,例如双重绝缘或者加强绝缘,并没有接地保护措施。
现有技术中,第一类电源或灯具的防雷电路是通过使用气体放电管实现的,但是,为了保证爬电距离和电气距离,气体放电管不能作为双重绝缘或者加强绝缘的载体,所以当防雷电路输入端对地有双重绝缘要求时,现有技术的防雷电路不再适用。
因此,提供一种防雷电路,能够同时满足第一类电源或灯具的防雷要求和第二类电源或灯具的双重绝缘要求,是本领域技术人员亟待解决的问题。
发明内容
有鉴于此,本申请提供一种防雷电路及应用其的防雷电源,该防雷电路及应用其的防雷电源可以同时满足第一类电源或灯具的防雷要求和第二类电源或灯具的双重绝缘要求。
为实现上述目的,本申请提供如下技术方案:
一种防雷电路,所述防雷电路包括:放电针和压敏电阻;其中,所述压敏电阻的一端与火线或者零线相连,所述压敏电阻的另一端通过所述放电针接 地;
所述放电针包括:相对设置的第一导体和第二导体;
其中,所述第一导体和所述第二导体之间的空间相对距离根据防雷等级设置;
所述第一导体和所述第二导体的焊盘间距根据爬电距离或者绝缘等级设置;
当共模雷电能量进入所述防雷电路,且雷击电压大于所述压敏电阻的触发电压和所述放电针的触发电压之和时,所述第一导体与所述第二导体之间形成通路,所述压敏电阻也被触发导通,所述共模雷电能量通过所述放电针和所述压敏电阻泄放,进而保护后级电路。
优选的,在上述防雷电路中,所述第一导体为第一放电插针;所述第二导体为第二放电插针;
其中,所述第一放电插针的针尖与所述第二放电插针的针尖相对设置,所述针尖之间的距离根据所述空间相对距离设置。
优选的,在上述防雷电路中,所述第一放电插针与所述第二放电插针通过所述杜邦针的底座固定。
优选的,在上述防雷电路中,所述第一导体和所述第二导体分别为两个电子元器件的引脚。
优选的,在上述防雷电路中,所述电子元器件为SMA、SMB或者SMC封装的贴片二极管。
优选的,在上述防雷电路中,所述防雷电路还包括:另一个压敏电阻;
两个压敏电阻串联在火线与零线之间,且两个压敏电阻的连接点与所述放电针相连;
当有差模雷电能量进入所述防雷电路时,两个压敏电阻导通,在火线和零线之间形成通路。
优选的,在上述防雷电路中,所述防雷电路还包括:
气体放电管,所述气体放电管与所述放电针串联。
优选的,在上述防雷电路中,所述防雷电路还包括:
第三压敏电阻;
所述第三压敏电阻一端与所述火线连接,所述第三压敏电阻另一端与所述零线连接。
本申请还提供了一种防雷电源,所述防雷电源包括:上述任一项所述的防雷电路。
从上述技术方案可以看出,本申请所提供的一种防雷电路及应用其的防雷电源,该防雷电路包括:压敏电阻和放电针,所述放电针包括:相对设置的第一导体和第二导体;其中,所述第一导体和所述第二导体之间的空间相对距离根据防雷等级设置;所述第一导体和所述第二导体的焊盘间距根据爬电距离或者绝缘等级设置。由此可知,第一导体与第二导体相对设置,且根据防雷等级设置第一导体与第二导体之间的相对距离,也就是满足电气距离,满足了防雷的要求。并且第一导体及第二导体的焊盘间距根据爬电距离或者绝缘等级设置,也就是说设置第一导体及第二导体的焊盘间距大于爬电距离就可以满足双重绝缘的要求。
因此,本申请提供的一种防雷电路及应用其的防雷电源,可以同时满足第一类电源或灯具的防雷要求和第二类电源或灯具的双重绝缘要求。
附图说明
图1为现有技术提供的一种防雷电路的结构示意图;
图2为本申请实施例提供的一种防雷电路的结构示意图;
图3为本申请实施例提供的另一种防雷电路的结构示意图;
图4为本申请实施例提供的又一种防雷电路的结构示意图。
具体实施方式
为了进一步了解本申请,下面结合实施例对本申请优选实施方案进行描述,但是应当理解,这些描述只是为进一步说明本申请的特征和优点,而不是对本申请权利要求的限制。
根据背景技术可知,参考图1,如图1所示现有技术的防雷电路是通过使用气体放电管实现的,但是应用在兼容第一类电源及第二类电源特征的电源或灯具的情况下时,气体放电管需要选用高压型,进而满足电路对地的耐压测试,但是,如果选用高压型的气体放电管,会导致泄放能量的起点被抬高,不能有效的保护后级电路。并且,为了保证爬电距离和电气距离,气体放电管不能作 为双重绝缘的载体,因此使用气体放电管的防雷电路不能满足第二类电源双重绝缘的要求。
为了解决上述问题,本申请实施例提供了一种防雷电路,该防雷电路包括:放电针和压敏电阻;其中,该压敏电阻的一端与火线或者零线相连,该压敏电阻的另一端通过该放电针接地;
参见图2,该放电针21包括:相对设置的第一导体22和第二导体23。
其中,第一导体22和第二导体23之间的空间相对距离根据防雷等级设置。
第一导体22和第二导体23的焊盘间距根据爬电距离或者绝缘等级设置。
需要说明的是,第一导体22和第二导体23之间的空间相对距离为:置于空气中的第一导体和第二导体之间的最短距离。
具体的工作原理为:
由于第一导体22与第二导体23之间,需要一定的击穿电压才能泄放积聚在第一导体22和第二导体23上的能量。所以,在没有雷击的情况时,第一导体22与第二导体23之间的电荷能量,不足以击穿相隔空间相对距离的两个导体间的空气进行放电,此时第一导体22与第二导体23之间相当于断路。因此,有效的阻断了电路对地产生漏电流,保证了不因增设放电针21而产生过大的漏电流,进而避免了过大的漏电流所造成的用电危险。
由于第一导体22和第二导体23之间的空间相对距离根据防雷等级设置,也就是说,第一导体22和第二导体23之间设置的空间相对距离不同时,对应触发电压的也将不同,当作用在第一导体22和第二导体23之间电压大于该触发电压时,即可击穿第一导体22与第二导体23之间的空气,使第一导体22与第二导体23之间通过空气形成通路。
产生共模雷击时,当雷击电压大于压敏电阻的触发电压和放电针的触发电压之和时,第一导体22与所述第二导体23之间形成通路,压敏电阻也被触发导通,雷击能量通过放电针和压敏电阻泄放,进而保护后级电路。
也即,本实施例提供的该防雷电路,采用放电针取代了现有技术中给的气体放电管,当进入该防雷电路的共模雷电能量足以击穿第一导体22与第二导体23之间的空气时,该压敏电阻(图2中的压敏电阻24或者25)导通,该 共模雷电能量通过该压敏电阻和放电针泄放,进而实现了防雷功能。
另外,本实施例提供的该防雷电路,通过第一导体22与第二导体23相对设置,根据防雷等级设置第一导体22与第二导体23之间的空间相对距离,根据爬电距离或者绝缘等级设置第一导体22及第二导体23的焊盘间距,既能满足防雷等级要求,又能满足爬电距离或者绝缘等级要求,兼容了第一类和第二类电源或灯具的要求。
可选的,为了进一步优化上述实施例,其中,第一导体22为第一放电插针,第二导体23为第二放电插针,且第一放电插针的针尖与第二放电插针的针尖相对设置,该第一放电插针的针尖与第二放电插针的针尖之间的间距根据空间相对距离设置,即根据电路所需防雷等级进行设置,以满足防雷要求。
可选的,第一放电插针与第二放电插针通过杜邦针的底座固定。且,第一放电针与第二放电针的底座之间的距离根据爬电距离或者绝缘等级设置,以满足绝缘要求。
可选的,第一导体22与第二导体23为两个电子元器件的引脚,两个电子元器件的引脚相对设置。该两个电子元器件引脚之间的空间相对距离按照所需防雷等级进行设置,以满足防雷要求。
需要说明的是,此时仅仅利用电子元器件的引脚作为泄放雷击能量的导体,并没有使用电子元器件常规的电子特性。
可选的,该电子元器件为SMA、SMB或者SMC封装的贴片二极管。需要说明的是在本申请中包括但不限定于电子元器件引脚。
申请另一实施例还提供了另外一种防雷电路,在上述实施例的基础之上,优选的,该防雷电路还包括:另一个压敏电阻。
两个压敏电阻,即图2中的压敏电阻24和25,串联在火线与零线之间,且压敏电阻24与25的连接点与放电针21相连。
具体原理为,在没有雷电发生的情况时,该防雷电路处于高阻抗状态;但是,当有差模雷电能量进入该防雷电路时,压敏电阻24与25迅速导通,在火 线和零线之间形成通路,避免了差模雷电能量继续向后级电路传导,进而保护后级电路及后端用电设备。
另外,当有共模雷电能量进入该防雷电路并且该能量可以击穿放电针内的空气(放电针相隔空间相对距离的两个导体间的空气)时,压敏电阻24与25均迅速导通,并通过放电针21将共模雷电能量泄放,实现了防雷的目的,进而保护后级电路及后端用电设备。
可选的,为了进一步优化上述实施例,在本申请另一实施例中,参考图3,图3为本申请实施例提供的又一种防雷电路的结构示意图。
该防雷电路还包括:
气体放电管31,该气体放电管31与放电针21串联。
在该防雷电路满足双重绝缘要求的情况下,通过添加气体放电管31,可以提高防雷等级。
可选的,为了进一步优化上述实施例,在本申请另一实施例中,参考图4,图4为本申请实施例提供的又一种防雷电路的结构示意图。
该防雷电路还包括:
第三压敏电阻41,该第三压敏电阻41一端与火线连接,该第三压敏电阻41另一端与零线连接。
也就是说,在雷电发生的情况下,也会有差模能量的产生,那么为了实现差模防雷功能,进一步添加第三压敏电阻41,该第三压敏电阻41的触发电压值小于压敏电阻24与25的触发电压值之和。以当火线与零线之间接入差模雷电能量时,第三压敏电阻41优先于压敏电阻24与25导通,确保该差模雷电能量的快速泄放。
需要说明的是,本申请还提供了一种防雷电源,该防雷电源包括该防雷电路,该防雷电源用于驱动用电设备,包括但不限定于LED驱动电源。
对所公开的实施例的上述说明,使本领域专业技术人员能够实现或使用本 申请。对这些实施例的多种修改对本领域的专业技术人员来说将是显而易见的,本文中所定义的一般原理可以在不脱离本申请的精神或范围的情况下,在其它实施例中实现。因此,本申请将不会被限制于本文所示的这些实施例,而是要符合与本文所公开的原理和新颖特点相一致的最宽的范围。

Claims (9)

  1. 一种防雷电路,其特征在于,所述防雷电路包括:放电针和压敏电阻;其中,所述压敏电阻的一端与火线或者零线相连,所述压敏电阻的另一端通过所述放电针接地;
    所述放电针包括:相对设置的第一导体和第二导体;
    其中,所述第一导体和所述第二导体之间的空间相对距离根据防雷等级设置;
    所述第一导体和所述第二导体的焊盘间距根据爬电距离或者绝缘等级设置;
    当共模雷电能量进入所述防雷电路,且雷击电压大于所述压敏电阻的触发电压和所述放电针的触发电压之和时,所述第一导体与所述第二导体之间形成通路,所述压敏电阻也被触发导通,所述共模雷电能量通过所述放电针和所述压敏电阻泄放,进而保护后级电路。
  2. 根据权利要求1所述的防雷电路,其特征在于,所述第一导体为第一放电插针;所述第二导体为第二放电插针;
    其中,所述第一放电插针的针尖与所述第二放电插针的针尖相对设置,所述针尖之间的距离根据所述空间相对距离设置。
  3. 根据权利要求2所述的防雷电路,其特征在于,所述第一放电插针与所述第二放电插针通过所述杜邦针的底座固定。
  4. 根据权利要求1所述的防雷电路,其特征在于,所述第一导体和所述第二导体分别为两个电子元器件的引脚。
  5. 根据权利要求4所述的防雷电路,其特征在于,所述电子元器件为SMA、SMB或者SMC封装的贴片二极管。
  6. 根据权利要求1-5任一项所述的防雷电路,其特征在于,所述防雷电路还包括:另一个压敏电阻;
    两个压敏电阻串联在火线与零线之间,且两个压敏电阻的连接点与所述放电针相连;
    当有差模雷电能量进入所述防雷电路时,两个压敏电阻导通,在火线和零线之间形成通路。
  7. 根据权利要求6所述的防雷电路,其特征在于,所述防雷电路还包括:
    气体放电管,所述气体放电管与所述放电针串联。
  8. 根据权利要求7所述的防雷电路,其特征在于,所述防雷电路还包括:
    第三压敏电阻;
    所述第三压敏电阻一端与所述火线连接,所述第三压敏电阻另一端与所述零线连接。
  9. 一种防雷电源,其特征在于,所述防雷电源包括:上述如权利要求1-8任一项所述的防雷电路。
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