CN203261021U - Lightening surge suppression circuit - Google Patents
Lightening surge suppression circuit Download PDFInfo
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- CN203261021U CN203261021U CN 201320180442 CN201320180442U CN203261021U CN 203261021 U CN203261021 U CN 203261021U CN 201320180442 CN201320180442 CN 201320180442 CN 201320180442 U CN201320180442 U CN 201320180442U CN 203261021 U CN203261021 U CN 203261021U
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- stabilizing didoe
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- lightning surge
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Abstract
The utility model discloses a lightening surge suppression circuit, aiming to provide a lightening surge suppression circuit capable of eliminating interference of lightening surge effectively. The circuit comprises a capacitor C1, a voltage regulator diode D1, a voltage regulator diode D2, a voltage regulator diode D3, a tube fuse F, a pi filter, and a resistor R1. A DC input end T is connected to one end of the capacitor C1 and the anode of the voltage regulator diode D1. The cathode of the voltage regulator diode D1 is connected to one end of the tube fuse F and one end of the pi filter. The other end of the tube fuse F is connected to the cathode of the voltage regulator diode D2. A DC input end N is connected to the other end of the capacitor C1, the anode of the voltage regulator diode D2, and the other end of the pi filter. One end of an output end of the pi filter is connected to one end of the resistor R1, the other end of the resistor R1 is connected to the cathode of the voltage regulator diode D3 and one end of an output end, and the other end of the output end of the pi filter is connected to the anode of the voltage regulator diode D3 and the other end of the output end. The beneficial effect of the circuit is that interference of lightening surge can be effectively eliminated, so that the circuit is more stable.
Description
Technical field
The utility model relates to the power supply correlative technology field, refers in particular to a kind of inhibition lightning surge circuit.
Background technology
Lightning surge is a kind of very general physical phenomenon, produces many high-octane pulses in circuit, and reliability and the fail safe of electronic circuit had a great impact, and often daily circuit is caused the harm that can't estimate, even cause personal injury.The generation of lightning surge mainly comprises following several respects: input/output switching action in the electronic circuit; System is switched between power supply, the interference when for example the capacitor group is switched; In the same network system, some other P cock near electronic circuit waveform of beating disturbs by spatial emission; External lightning hits near ground, and earth-current disturbs by causing publicly lightning surge; The mutability fault of other system in the electronic circuit, such as both positive and negative polarity short circuit and arc fault etc.; Rub between human body and electronic circuit, touch the electrostatic interference sudden change that causes; Indirect stroke (thunderbolt that suffers such as the thunderbolt in the cloud layer, between cloud layer or adjacent object) also induces electric current and the power supply of lightning surge out of doors on the overhead wire.Day by day universal along with power electronic technology, the development of new technology, electric equipment miscellaneous, electric automobile etc. appear in people's daily life, and the harm such as the lightning surge interference that occurs in the circuit also increases greatly.Harm for lightning surge brings mainly suppresses by adding some Anti-surging TVS pipes, ceramic gas discharge tube, piezo-resistance etc., has played partial action, but has been difficult to thorough elimination.
Chinese patent Granted publication number: CN 202333792U, July 11 2012 Granted publication day, a kind of lightning prevention surge circuit was disclosed, be provided with protective tube F1, protective tube F2, piezo-resistance VR1 and thermistor R100; Described ac input end L is connected with protective tube F1 one end, the protective tube F1 other end, protective tube F2 one end are connected with piezo-resistance VR1 one end, the protective tube F2 other end is connected with output head anode, ac input end N is connected with the piezo-resistance VR1 other end, thermistor R100 one end, and the thermistor R100 other end is connected with negative pole of output end.The weak point of this utility model is, mainly suppresses by adding temperature-sensitive resistance, piezo-resistance etc., has played partial action, but has been difficult to effectively eliminate the interference of lightning surge.
The utility model content
The utility model is to be difficult to effectively eliminate the deficiency that lightning surge disturbs in order to overcome prior art, provides a kind of and can effectively eliminate the inhibition lightning surge circuit that lightning surge disturbs.
To achieve these goals, the utility model is by the following technical solutions:
A kind of inhibition lightning surge circuit, comprise capacitor C 1, voltage stabilizing didoe D1, voltage stabilizing didoe D2, voltage stabilizing didoe D3, protective tube F, pi type filter and resistance R 1, described direct-flow input end T connects the anode of capacitor C 1 one ends and voltage stabilizing didoe D1, the negative electrode of described voltage stabilizing didoe D1 connects input one end of protective tube F one end and pi type filter, the described protective tube F other end connects the negative electrode of voltage stabilizing didoe D2, described direct-flow input end N connects capacitor C 1 other end, the input other end of the anode of voltage stabilizing didoe D2 and pi type filter, output one end contact resistance R1 one end of described pi type filter, described resistance R 1 other end connects negative electrode and output one end of voltage stabilizing didoe D3, and the output other end of described pi type filter connects anode and the output other end of voltage stabilizing didoe D3.
This circuit is at first subdued by the lightning surge that capacitor C 1 is carried out the first order, then by voltage stabilizing didoe D1, the lightning surge that voltage stabilizing didoe D2 and protective tube F carry out the second level suppresses, process by the filtering of pi type filter afterwards, carry out the lightning surge of subduing of the third level, carry out at last the lightning surge of subduing of the fourth stage by resistance R 1 and voltage stabilizing didoe D3, and by voltage stabilizing didoe D3 so that voltage clamping on a fixed voltage, passed through subduing layer by layer of level Four, can greatly reduce and suppress the impact of lightning surge, make it reach the scope that late-class circuit can bear, design has reached the purpose that effective elimination lightning surge disturbs like this.
As preferably, described pi type filter comprises capacitor C 2, inductance L and capacitor C 3, the negative electrode of described voltage stabilizing didoe D1 connects capacitor C 2 one ends and inductance L input one end, described inductance L output one end connects capacitor C 3 one ends and resistance R 1 one ends, described direct-flow input end N connects capacitor C 2 other ends and the inductance T input other end, the described inductance L output other end connects the anode of capacitor C 3 other ends and voltage stabilizing didoe D3, by pi type filter waveform is filtered, can effectively subdue the interference of lightning surge.
As preferably, described capacitor C 1 is the high pressure Absorption Capacitance, and lightning surge waveform that can the transient absorption part plays an effect of subduing.
As preferably; described voltage stabilizing didoe D1 and voltage stabilizing didoe D2 are transient voltage suppresser diode; the transient voltage suppressor diode transient switching; so that crossed voltage stabilizing didoe D1 voltage clamping afterwards to certain value; rear class has been played protective effect; select in addition transient voltage suppressor diode and without piezo-resistance or ceramic gas discharge tube; when running into the instantaneous pressure impact; the reaction speed of transient voltage suppressor diode is sensitive more a lot of than pressure-sensitive resistance or ceramic gas discharge tube; can suppress moment; reach the moment inhibition, reduce the rear class loss.
As preferably, described resistance R 1 is precision resistance, the interference of subduing lightning surge that can degree of precision, the scope that can bear to satisfy late-class circuit.
As preferably, described capacitor C 2 and capacitor C 3 are nonpolarity filter capacitor, can carry out filtering to waveform preferably, suppress the effect that lightning surge disturbs to reach.
As preferably, described inductance L is common mode inductance, and when the normal current in the circuit was flowed through common mode inductance, electric current produced reverse magnetic field and cancels out each other in the inductance coil of same-phase coiling, and this moment, the normal signal electric current mainly was subjected to the impact of coil resistance; When the common mode current flowing through coil is arranged, because the same tropism of common mode current, understand the induction reactance that produces magnetic field in the same way in coil and increase coil, make coil show as high impedance, produce stronger damping, with this attenuation common-mode electric current, reach the purpose of filtering, be used for suppressing the electromagnetic wave outside radiation-emitting that HW High Way produces, improve and suppress the effect that lightning surge disturbs.
The beneficial effects of the utility model are: effectively eliminate lightning surge and disturb, establishment lightning surge disturbing wave through subduing layer by layer, makes it reach the scope that late-class circuit can bear to the destruction of circuit, reduces simultaneously the loss of rear class, makes circuit more stable.
Description of drawings
Fig. 1 is circuit diagram of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is further described.
Among the embodiment as described in Figure 1, a kind of inhibition lightning surge circuit, comprise capacitor C 1, voltage stabilizing didoe D1, voltage stabilizing didoe D2, voltage stabilizing didoe D3, protective tube F, pi type filter and resistance R 1, pi type filter comprises capacitor C 2, inductance L and capacitor C 3, direct-flow input end T connects the anode of capacitor C 1 one ends and voltage stabilizing didoe D1, the negative electrode of voltage stabilizing didoe D1 connects protective tube F one end, capacitor C 2 one ends and inductance L input one end, the protective tube F other end connects the negative electrode of voltage stabilizing didoe D2, inductance L output one end connects capacitor C 3 one ends and resistance R 1 one ends, resistance R 1 other end connects negative electrode and output one end of voltage stabilizing didoe D3, direct-flow input end N connects capacitor C 1 other end, the anode of voltage stabilizing didoe D2, capacitor C 2 other ends and the inductance L input other end, the inductance L output other end connects capacitor C 3 other ends, the anode of voltage stabilizing didoe D3 and the output other end.Wherein, capacitor C 1 is the high pressure Absorption Capacitance, and capacitor C 2 and capacitor C 3 are nonpolarity filter capacitor, and voltage stabilizing didoe D1 and voltage stabilizing didoe D2 are transient voltage suppresser diode, and resistance R 1 is precision resistance, and inductance L is common mode inductance.
The correlation properties of lightning surge have been stipulated according to newest standards GBT17626.5-2008, IEC61000-4-5:2005 EMC test and measuring technique surge (impact) immunity experiment.Take New-energy electric vehicle motor driver circuit plate as example, when having a lightning surge interference waveform to enter circuit by ac input end, capacitor C 1 is the high pressure Absorption Capacitance of 4.7nF/2KV, and the lightning surge waveform of capacitor C 1 transient absorption part plays an effect of subduing.Wherein, voltage stabilizing didoe D1, voltage stabilizing didoe D2 are transient voltage suppressor diode (TVS pipe); its clamp voltage is 27V/3600W; interference waveform after process voltage stabilizing didoe D1; voltage stabilizing didoe D2 transient switching; make through the voltage clamping after the voltage stabilizing didoe D1 to 27V, rear class has been played protective effect.Why select transient voltage suppressor diode (TVS pipe) and without piezo-resistance or ceramic gas discharge tube, because when running into the instantaneous pressure impact, the reaction speed of transient voltage suppressor diode (TVS pipe) is sensitive more a lot of than pressure-sensitive resistance or ceramic gas discharge tube, can suppress moment, reach the moment inhibition, reduce the rear class loss.Wherein protective tube F mainly protects voltage stabilizing didoe D2, the both positive and negative polarity short circuit occurs when preventing that voltage stabilizing didoe D2 lost efficacy to cause fault.Capacitor C 2, inductance L, capacitor C 3 are combined into a pi type filter, and wherein: capacitor C 2, capacitor C 3 are nonpolarity filter capacitor, and its appearance value is 0.1uF/50V; Inductance L is common mode inductance, and its sense value 3.3mH is to carrying out filtering through the interference waveform after the voltage stabilizing didoe D1.Voltage stabilizing didoe D3 is the voltage-stabiliser tube of 24V/1W; Main Function is to make rear step voltage voltage stabilizing to 24V; make the rear class input voltage be 24V to the maximum; resistance R 1 is 50m Ω/2W precision resistance; resistance R 1 cooperates voltage stabilizing didoe D3 to use, and when voltage stabilizing didoe D3 conducting, the internal resistance of voltage stabilizing didoe D3 is very little; this moment, resistance R 1 and voltage stabilizing didoe D3 dividing potential drop protected voltage stabilizing didoe D3 to damage not because of power.So passed through subdue layer by layer after, be reduced to the scope that late-class circuit can bear to the lightning surge disturbing wave of ac output end, reach and suppress the effect that lightning surge disturbs.
Claims (7)
1. one kind is suppressed the lightning surge circuit, it is characterized in that, comprise capacitor C 1, voltage stabilizing didoe D1, voltage stabilizing didoe D2, voltage stabilizing didoe D3, protective tube F, pi type filter and resistance R 1, described direct-flow input end T connects the anode of capacitor C 1 one ends and voltage stabilizing didoe D1, the negative electrode of described voltage stabilizing didoe D1 connects input one end of protective tube F one end and pi type filter, the described protective tube F other end connects the negative electrode of voltage stabilizing didoe D2, described direct-flow input end N connects capacitor C 1 other end, the input other end of the anode of voltage stabilizing didoe D2 and pi type filter, output one end contact resistance R1 one end of described pi type filter, described resistance R 1 other end connects negative electrode and output one end of voltage stabilizing didoe D3, and the output other end of described pi type filter connects anode and the output other end of voltage stabilizing didoe D3.
2. a kind of inhibition lightning surge circuit according to claim 1, it is characterized in that, described pi type filter comprises capacitor C 2, inductance L and capacitor C 3, the negative electrode of described voltage stabilizing didoe D1 connects capacitor C 2 one ends and inductance L input one end, described inductance L output one end connects capacitor C 3 one ends and resistance R 1 one ends, described direct-flow input end N connects capacitor C 2 other ends and the inductance L input other end, and the described inductance L output other end connects the anode of capacitor C 3 other ends and voltage stabilizing didoe D3.
3. a kind of inhibition lightning surge circuit according to claim 1 is characterized in that, described capacitor C 1 is the high pressure Absorption Capacitance.
4. a kind of inhibition lightning surge circuit according to claim 1 is characterized in that described voltage stabilizing didoe D1 and voltage stabilizing didoe D2 are transient voltage suppresser diode.
5. according to claim 1 or 3 described a kind of inhibition lightning surge circuit, it is characterized in that described resistance R 1 is precision resistance.
6. a kind of inhibition lightning surge circuit according to claim 2 is characterized in that described capacitor C 2 and capacitor C 3 are nonpolarity filter capacitor.
7. a kind of inhibition lightning surge circuit according to claim 2 is characterized in that described inductance L is common mode inductance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320180442 CN203261021U (en) | 2013-04-11 | 2013-04-11 | Lightening surge suppression circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320180442 CN203261021U (en) | 2013-04-11 | 2013-04-11 | Lightening surge suppression circuit |
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| Publication Number | Publication Date |
|---|---|
| CN203261021U true CN203261021U (en) | 2013-10-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320180442 Expired - Lifetime CN203261021U (en) | 2013-04-11 | 2013-04-11 | Lightening surge suppression circuit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104659774A (en) * | 2015-02-11 | 2015-05-27 | 深圳市航盛电子股份有限公司 | Low-voltage input power supply port protection circuit |
| CN110729771A (en) * | 2019-10-28 | 2020-01-24 | 许继电气股份有限公司 | Self-powered device |
-
2013
- 2013-04-11 CN CN 201320180442 patent/CN203261021U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104659774A (en) * | 2015-02-11 | 2015-05-27 | 深圳市航盛电子股份有限公司 | Low-voltage input power supply port protection circuit |
| CN110729771A (en) * | 2019-10-28 | 2020-01-24 | 许继电气股份有限公司 | Self-powered device |
| CN110729771B (en) * | 2019-10-28 | 2020-12-15 | 许继电气股份有限公司 | Self-powered device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131030 |
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| CX01 | Expiry of patent term |