CN205544921U - A anti jamming unit for printed circuit board - Google Patents
A anti jamming unit for printed circuit board Download PDFInfo
- Publication number
- CN205544921U CN205544921U CN201620184591.7U CN201620184591U CN205544921U CN 205544921 U CN205544921 U CN 205544921U CN 201620184591 U CN201620184591 U CN 201620184591U CN 205544921 U CN205544921 U CN 205544921U
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- voltage stabilizing
- voltage
- stabilizing module
- module
- circuit board
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- 230000000087 stabilizing effect Effects 0.000 claims abstract description 113
- 239000003990 capacitor Substances 0.000 claims description 23
- 238000001914 filtration Methods 0.000 claims description 18
- 230000001052 transient effect Effects 0.000 claims description 7
- 230000005611 electricity Effects 0.000 description 11
- 238000010586 diagram Methods 0.000 description 10
- 230000003068 static effect Effects 0.000 description 7
- 230000005855 radiation Effects 0.000 description 6
- 230000002441 reversible effect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000007639 printing Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
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Abstract
The utility model discloses an anti jamming unit for printed circuit board, the device includes: a voltage stabilizing module, a voltage stabilizing module's one end and power are connected, and the other end is connected with holding firstly for with signal battery from the mains voltage steady voltage to intermediate voltage, hold holding for printed circuit board firstly publicly, the 2nd voltage stabilizing module, the 2nd voltage stabilizing module and a voltage stabilizing module are connected for will through the signal of telecommunication after the voltage stabilizing module steady voltage from the intermediate voltage steady voltage to target voltage, and the export target signal of telecommunication, intermediate voltage is not more than the 2nd voltage stabilizing module's the biggest withstand voltage, second ground end sets up around printed circuit board to surround the whole electron device in the printed circuit board, and, first diode, anodal connect a voltage stabilizing module with hold firstly between the wiring on, the negative pole is held with second ground and is connected. Like this, the electromagnetic interference of separate sources among the hardware circuit can be solved effectively, electrical equipment's EMC is improved.
Description
Technical field
This utility model relates to circuit field, in particular it relates to a kind of anti-interference for printed circuit board (PCB)
Device.
Background technology
When the automobile driven with igniter motor runs on highway, petrolic high-tension ignition
System can produce strong electromagnetic wave, disturbs the normal fortune of radiobroadcasting about and radio communication business
OK, and to electromagnetic environment pollute.It is external that the feature of the electromagnetic interference of vehicle interior is different from vehicle
The interference in portion.In car, electromagnetic interference can be propagated by various connection cables, also can be with coupled modes, sky
Between the auxiliary mode penetrating transmitting propagate.Typical form has: along power line Conduction Interference；Static electricity on human body
The electric discharge interference to electronic unit；Interfering energy is by space radiation etc..
Electromagnetic interference is embodied in the phenomenon in instrument, and one is monolithic processor resetting, and instrument restarts, step
Enter the abnormal shake of motor, liquid crystal display flower screen, EEPROM (Electrically Erasable
Programmable Read-Only Memory, EEPROM) caused by erasable
Mileage amounts to mistake.Whether which kind of interference source, be embodied on circuit is all the interference of positive negative pulse stuffing formula,
Or frequency interferences, and great majority interference is all to enter in circuit by ground wire, have impact on whole electricity
The voltage difference on road, causes some device cisco unity malfunction.
Fig. 1 is the circuit diagram of the existing noise trap for printed circuit board (PCB).As it is shown in figure 1,
On existing circuit board, Z1 is utilized to carry out anti-EMC (Electro Magnetic Compatibility, electricity
Magnetic is compatible) design, wherein, Z1 is two-way TVS Transient Voltage Suppressor, can effectively suppress edge
The interference of power line.The magnitude of voltage of Z1 is typically chosen in less than voltage stabilizing chip 78R05 input voltage
Big value.But, this mode is for the interference radiated from the interference of human body electro static discharge and energy space
Effect is little.
Utility model content
The purpose of this utility model is cannot to be had for electromagnetic interference in hardware circuit in prior art
The problem that effect solves, it is provided that a kind of noise trap for printed circuit board (PCB).
To achieve these goals, this utility model provides a kind of anti-interference dress for printed circuit board (PCB)
Putting, described device includes: the first Voltage stabilizing module, and one end of this first Voltage stabilizing module is connected with power supply, separately
One end is connected with the first ground end, for by from described power supply power supply signal from supply voltage voltage stabilizing to
Between voltage, wherein, described first ground end is the common of described printed circuit board (PCB)；Second Voltage stabilizing module,
This second Voltage stabilizing module is connected with described first Voltage stabilizing module, and being used for will be through described first Voltage stabilizing module voltage stabilizing
After the signal of telecommunication from described medium voltage voltage stabilizing to target voltage, and export the target signal of telecommunication, wherein, institute
State medium voltage to be not more than the maximum of described second Voltage stabilizing module and bear voltage；Second ground end, is arranged on institute
State the surrounding of circuit board, and surround the whole electronic devices in described printed circuit board (PCB)；And, the one or two
Pole is managed, and the positive pole of described first diode is connected between described first Voltage stabilizing module and described first ground end
Wiring on, the negative pole of described first diode is connected with described second ground end.
Alternatively, described first Voltage stabilizing module includes Transient Voltage Suppressor.
Alternatively, this device also includes: the first filtration module, is connected to described first Voltage stabilizing module and institute
State between the second Voltage stabilizing module, for the signal of telecommunication after described first Voltage stabilizing module voltage stabilizing is filtered
Ripple, and by the transmission of the filtered signal of telecommunication to described second Voltage stabilizing module.
Alternatively, described first filtration module includes: the first electrochemical capacitor, with described first Voltage stabilizing module
Parallel connection, and the negative pole of described first electrochemical capacitor is connected with described first ground end；First electric capacity, with institute
State the first electrochemical capacitor in parallel.
Alternatively, described second Voltage stabilizing module includes voltage stabilizing chip.
Alternatively, this device also includes: anti-reverse module, is connected to described power supply and described first voltage stabilizing
Between module.
Alternatively, described anti-reverse module includes: the second diode, the positive pole of this second diode and institute
State power supply to connect；Resistance, is connected between the negative pole of described second diode and described first Voltage stabilizing module.
Alternatively, this device also includes: the second filtration module, is connected to described second Voltage stabilizing module and institute
State between the first ground end, for the described target signal of telecommunication is filtered.
Alternatively, described second filtration module includes: the second electric capacity, is connected to described second Voltage stabilizing module
And between described first ground end；Second electrochemical capacitor, in parallel with described second electric capacity, and described second
The negative pole of electrochemical capacitor is connected with described first ground end.
In sum, when power supply is just switched on, the instantaneous voltage of power end is unstable, the first Voltage stabilizing module
Can by instantaneous voltage the most within the specific limits, the middle electricity after the voltage stabilizing of the first Voltage stabilizing module
Pressure signal continues through the second Voltage stabilizing module, by the second Voltage stabilizing module by its voltage stabilizing to target voltage,
For application circuit.Meanwhile, the first diode connects the first ground end and the second ground end, and the first ground end supplies
Circuit uses altogether, and the second ground end is then for electromagnetic shielding.By technique scheme, in hardware circuit
Electromagnetic interference from power line can solve jointly via the first Voltage stabilizing module and the first diode；From
The interference of human body electro static discharge can be eliminated by the first diode；Electromagnetic interference from energy space radiation
Then can be by the second ground end shield.Thus, the noise trap that this utility model provides can suppress along electricity
The interference of source line conduction, the interference of human body electro static discharge and the interference of energy space radiation, solve effectively
Certainly the electromagnetic interference of separate sources in hardware circuit, improves the EMC of electrical equipment.
Other feature and advantage of the present utility model will give in detailed description of the invention part subsequently in detail
Explanation.
Accompanying drawing explanation
Accompanying drawing is used to offer and is further appreciated by of the present utility model, and constitutes one of description
Point, it is used for explaining this utility model together with detailed description below, but is not intended that this practicality
Novel restriction.In the accompanying drawings:
Fig. 1 is the circuit diagram of the existing noise trap for printed circuit board (PCB).
Fig. 2 is anti-interference for printed circuit board (PCB) provided according to a kind of embodiment of the present utility model
The circuit diagram of device.
Fig. 3 is to do for the anti-of printed circuit board (PCB) according to what another embodiment of the present utility model provided
Disturb the circuit diagram of device.
Fig. 4 is to do for the anti-of printed circuit board (PCB) according to what another embodiment of the present utility model provided
Disturb the circuit diagram of device.
Fig. 5 is to do for the anti-of printed circuit board (PCB) according to what another embodiment of the present utility model provided
Disturb the circuit diagram of device.
Description of reference numerals
01 printed circuit board (PCB) 10 first Voltage stabilizing module
20 power supply 30 first ground ends
40 second Voltage stabilizing module 50 second ground ends
60 first diode 70 first filtration modules
701 first electrochemical capacitor 702 first electric capacity
80 anti-reverse module 801 second diodes
802 resistance 90 second filtration modules
901 second electric capacity 902 second electrochemical capacitors
Detailed description of the invention
Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is described in detail.It is to be understood that
It is that detailed description of the invention described herein is merely to illustrate and explains this utility model, is not used to limit
This utility model processed.
In order to solve the problems referred to above, this utility model provides a kind of anti-interference dress for printed circuit board (PCB)
Put.Fig. 2 is anti-interference for printed circuit board (PCB) provided according to a kind of embodiment of the present utility model
The circuit diagram of device.As in figure 2 it is shown, this device may include that the first Voltage stabilizing module 10, this is first steady
One end of die block 10 is connected with power supply 20, and the other end and the first ground end 30 connect, for will be from
The power supply signal of power supply 20 is from supply voltage voltage stabilizing to medium voltage, and wherein, the first ground end 30 is printing
The common of circuit board 01；Second Voltage stabilizing module 40, this second Voltage stabilizing module 40 and first voltage stabilizing mould
Block 10 connects, for by the signal of telecommunication after this first Voltage stabilizing module 10 voltage stabilizing from medium voltage voltage stabilizing to
Target voltage, and export the target signal of telecommunication, wherein, medium voltage is not more than the second Voltage stabilizing module 40
Maximum bears voltage；Second ground end 50, is arranged on the surrounding of printed circuit board (PCB) 01, and surrounds this printing
Whole electronic devices in circuit board 01；And, the first diode 60, the positive pole of the first diode 60
It is connected in the wiring between the first Voltage stabilizing module 10 and the first ground end 30, bearing of the first diode 60
Pole is connected with the second ground end 50.
Wherein, the printed circuit board (PCB) 01 in this device can be the circuit that vehicle interior hardware circuit uses
Plate, this printed circuit board (PCB) 01 is integrated with electronic devices and components in need in vehicle hardware circuit, the
Two ground ends 50 are arranged in the edge of printed circuit board (PCB) 01, surround all electronics on printed circuit board (PCB) 01
Device.It will be understood however, that accompanying drawing of the present utility model simply schematically shows this printing
A part for circuit board 01, all right other electronic devices integrated of printed circuit board (PCB) 01, in order to clearly
Illustrate this utility model, eliminate these devices, do not show that.
So, when the interferencing propagation that human body electro static discharge causes to the second ground end 50, the first diode
The electromotive force of 60 negative pole ends is higher than the electromotive force of positive terminal, and the i.e. first diode 60 ends, and the electrostatic of human body is put
Electricity cannot be introduced into circuit, does not results in interference.The space radiation of energy runs into the second ground end 50 of Guan Bi
After, also shielded, its hardware circuit surrounded will not be produced interference.
In one embodiment, because the hardware circuit of vehicle interior is not the quickest to the change of voltage
Sense, so the diode that this first diode 60 uses threshold voltage to be more than 0.7V just can meet this reality
By novel demand.First diode 60 can be conventional commutation diode, owing to it is cheap,
Therefore, it is possible to reduce the cost of this device.
Fig. 3 is to do for the anti-of printed circuit board (PCB) according to what another embodiment of the present utility model provided
Disturb the circuit diagram of device.As it is shown on figure 3, alternatively, first Voltage stabilizing module 10 of this device can wrap
Include Transient Voltage Suppressor 101.In one embodiment, Transient Voltage Suppressor 101 can be TVS
Diode.When vehicle ignition starts, power supply transient voltage value is unstable, can reach 200V, directly connect
Entering circuit to cause damage the electronic device in circuit, this type diode has two-way inhibitory action,
Either positive pulse or negative pulse, after TVS diode, is all stable into weak electric signal, from
And reduce a part and enter the impulse disturbances of circuit from power end string, additionally it is possible to reduce big instantaneous voltage to electricity
The damage that sub-device causes.Illustratively, it is 36V that the maximum of the second Voltage stabilizing module 40 bears voltage, for
Not damaging the second Voltage stabilizing module 40, Transient Voltage Suppressor 101 can select 1.5KE18CA model
TVS diode, its output medium voltage be 28V.
Alternatively, this device can also include: the first filtration module 70, is connected to the first Voltage stabilizing module
10 and second between Voltage stabilizing module 40, for carrying out the signal of telecommunication after the first Voltage stabilizing module 10 voltage stabilizing
Filtering, and the filtered signal of telecommunication is transmitted to the second Voltage stabilizing module 40.
Thus, the signal of telecommunication that power supply signal obtains after the first Voltage stabilizing module 10 voltage stabilizing can be by first
It is filtered by filtration module 70 so that this signal of telecommunication can remove the moire disturbance of different amplitude,
More stable.
Alternatively, as it is shown on figure 3, the first filtration module 70 may include that the first electrochemical capacitor 701,
In parallel with the first Voltage stabilizing module 10, and the negative pole of the first electrochemical capacitor 701 and the first ground end 30 connect；
First electric capacity 702, in parallel with the first electrochemical capacitor 701.
The signal of telecommunication of the first Voltage stabilizing module 10 output, after the first electrochemical capacitor 701, can significantly drop
The impact on circuit of the low alternation pulse ripple, is converted to unidirectional current by alternating current, the first electrochemical capacitor 701
The DC signal of output can continue through the first electric capacity 702 to filter off clutter.Wherein, the first electrolysis
The biggest filter effect of capacitance of electric capacity 701 is the best, but electrochemical capacitor also can correspondingly consume electric energy,
Consider, use capacitance to be 470 μ F in the noise trap that this utility model provides the
One electrochemical capacitor 701, and the first electric capacity 702 that capacitance is 0.1 μ F.Thus, the first voltage stabilizing mould
The signal of telecommunication of block 10 output can be cut alternation ripple and clutter.
Alternatively, the second Voltage stabilizing module 40 can include voltage stabilizing chip.
In one embodiment, the model of voltage stabilizing chip can be 78R05, the output of this voltage stabilizing chip
Voltage is 5V, and this chip has Enable Pin, can be after power-off, automatic shutoff circuit, saves
Energy.Wherein, the selection of voltage stabilizing chip can come really in conjunction with the first Voltage stabilizing module 10 and target voltage
Fixed.Voltage stabilizing chip typically has specified input value, can be according in the first Voltage stabilizing module 10 output
Between magnitude of voltage size come with reference to select, target voltage is i.e. the expectation voltage of vehicle interior hardware circuit,
Therefore the size of combining target voltage and medium voltage may determine that the model of voltage stabilizing chip.
Fig. 4 is anti-interference for printed circuit board (PCB) provided according to another embodiment of the present utility model
The circuit diagram of device.Alternatively, as shown in Figure 4, this device can also include: anti-reverse module 80,
It is connected between power supply 20 and the first Voltage stabilizing module 10.
It is more that the overall hardware circuit of vehicle interior comprises electronic component, relatively costly, behaviour by mistake once occurs
Cause reverse power connection, it will bring the biggest loss.This device can provide anti-reverse module 80,
During reverse power connection, circuit is not turned on, it is possible to avoid causing device and circuit damage, car because of reverse power connection
The problem that electronic device cannot normally work, thus avoid loss.
Alternatively, as shown in Figure 4, this anti-reverse module 80 may include that the second diode 801, should
The positive pole of the second diode 801 is connected with power supply 20；Resistance 802, is connected to the second diode 801
Negative pole and the first Voltage stabilizing module 10 between.Illustratively, resistance 802 can use resistance to be 10 Ω's
Fixed value resistance.
When maloperation causes reverse power connection, the positive terminal of the second diode 801 is negative potential, and second
The negative pole end of diode 801 is now zero potential, and therefore the second diode 801 ends, and negative pulse cannot
Enter circuit, be prevented effectively from the loss that reverse power connection causes；When power supply normally uses, the second diode
The positive terminal of 801 is positive potential, and its negative pole end is zero potential, and the second diode 801 turns on, and power supply is believed
Number in resistance 802 is input to the first Voltage stabilizing module 10.
In one embodiment, the second diode 801 that anti-reverse module 80 uses can be rectification
Diode, such as M7, this model diode is relatively conventional and cheap, can reduce this device
Cost.
Fig. 5 is anti-interference for printed circuit board (PCB) provided according to another embodiment of the present utility model
The circuit diagram of device.Alternatively, as it is shown in figure 5, this device can also include: the second filtration module 90,
It is connected between the second Voltage stabilizing module 40 and the first ground end 30, for the target signal of telecommunication is filtered.
Owing to the printed circuit board (PCB) 01 in this device is the printed circuit board (PCB) of rolling stock internal hardware circuit,
It is relatively big that it relates to area, and distance wiring also can introduce interference in a small amount, at the second Voltage stabilizing module 40 by electricity
Pressure signal voltage stabilizing, to after target voltage, increases by the second filtration module 90, thereby, it is possible to effectively eliminate length
The interference that distance wiring brings so that the target signal of telecommunication is more stable.
Alternatively, as it is shown in figure 5, the second filtration module 90 may include that the second electric capacity 901, connect
Between the second Voltage stabilizing module 40 and the first ground end 30；Second electrochemical capacitor 902, with the second electric capacity 901
Parallel connection, and the negative pole of this second electrochemical capacitor 902 and the first ground end 30 connect.
Identical with the first filtration module 70, it is considered to filter effect and the factor of electric quantity consumption, illustratively,
The electric capacity that second electric capacity 901 can make electricity capacity be 0.1 μ F, the second electrochemical capacitor 902 can use
Capacitance is the electrochemical capacitor of 220 μ F.Thus, it is possible to eliminate the target of the second Voltage stabilizing module 40 output
The signal of telecommunication connects up, due to distance, the noise jamming brought.
In sum, when power supply is just switched on, the instantaneous voltage of power end is unstable, the first Voltage stabilizing module
Can by instantaneous voltage the most within the specific limits, the middle electricity after the voltage stabilizing of the first Voltage stabilizing module
Pressure signal continues through the second Voltage stabilizing module, by the second Voltage stabilizing module by its voltage stabilizing to target voltage,
For application circuit.Meanwhile, the first diode connects the first ground end and the second ground end, and the first ground end supplies
Circuit uses altogether, and the second ground end is then for electromagnetic shielding.By technique scheme, in hardware circuit
Electromagnetic interference from power line can solve jointly via the first Voltage stabilizing module and the first diode；From
The interference of human body electro static discharge can be eliminated by the first diode；Electromagnetic interference from energy space radiation
Then can be by the second ground end shield.Thus, the noise trap that this utility model provides can suppress along electricity
The interference of source line conduction, the interference of human body electro static discharge and the interference of energy space radiation, solve effectively
Certainly the electromagnetic interference of separate sources in hardware circuit, improves the EMC of electrical equipment.
Preferred implementation of the present utility model is described in detail above in association with accompanying drawing, but, this practicality is new
Type is not limited to the detail in above-mentioned embodiment, in technology concept of the present utility model,
The technical solution of the utility model can be carried out multiple simple variant, these simple variant belong to this reality
With novel protection domain.
It is further to note that each the concrete technology described in above-mentioned detailed description of the invention is special
Levy, in the case of reconcilable, can be combined by any suitable means.In order to avoid need not
The repetition wanted, various possible compound modes are illustrated by this utility model the most separately.
Additionally, combination in any can also be carried out between various different embodiment of the present utility model, only
Wanting it without prejudice to thought of the present utility model, it should be considered as content disclosed in the utility model equally.
Claims (9)
1. the noise trap for printed circuit board (PCB), it is characterised in that described device includes:
First Voltage stabilizing module, one end of this first Voltage stabilizing module is connected with power supply, the other end and the first ground end
Connect, be used for by the power supply signal from described power supply from supply voltage voltage stabilizing to medium voltage, wherein,
Described first ground end is the common of described printed circuit board (PCB)；
Second Voltage stabilizing module, this second Voltage stabilizing module is connected with described first Voltage stabilizing module, and being used for will be through institute
State the signal of telecommunication after the first Voltage stabilizing module voltage stabilizing from described medium voltage voltage stabilizing to target voltage, and export mesh
The mark signal of telecommunication, wherein, described medium voltage is not more than the maximum of described second Voltage stabilizing module and bears voltage；
Second ground end, is arranged on the surrounding of described printed circuit board (PCB), and surrounds in described printed circuit board (PCB)
All electronic devices；And,
First diode, the positive pole of described first diode is connected to described first Voltage stabilizing module and described the
In wiring between one ground end, the negative pole of described first diode is connected with described second ground end.
Device the most according to claim 1, it is characterised in that described first Voltage stabilizing module includes
Transient Voltage Suppressor.
Device the most according to claim 1 and 2, it is characterised in that this device also includes:
First filtration module, is connected between described first Voltage stabilizing module and described second Voltage stabilizing module, uses
In the signal of telecommunication after described first Voltage stabilizing module voltage stabilizing is filtered, and the filtered signal of telecommunication is passed
Transport to described second Voltage stabilizing module.
Device the most according to claim 3, it is characterised in that described first filtration module includes:
First electrochemical capacitor, in parallel with described first Voltage stabilizing module, and described first electrochemical capacitor is negative
Pole is connected with described first ground end；
First electric capacity, in parallel with described first electrochemical capacitor.
Device the most according to claim 1 and 2, it is characterised in that described second Voltage stabilizing module
Including voltage stabilizing chip.
Device the most according to claim 1 and 2, it is characterised in that this device also includes:
Anti-reverse module, is connected between described power supply and described first Voltage stabilizing module.
Device the most according to claim 6, it is characterised in that described anti-reverse module includes:
Second diode, the positive pole of this second diode is connected with described power supply；
Resistance, is connected between the negative pole of described second diode and described first Voltage stabilizing module.
Device the most according to claim 1 and 2, it is characterised in that this device also includes:
Second filtration module, is connected between described second Voltage stabilizing module and described first ground end, for right
The described target signal of telecommunication is filtered.
Device the most according to claim 8, it is characterised in that described second filtration module includes:
Second electric capacity, is connected between described second Voltage stabilizing module and described first ground end；
Second electrochemical capacitor, in parallel with described second electric capacity, and the negative pole of described second electrochemical capacitor with
Described first ground end connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620184591.7U CN205544921U (en) | 2016-03-10 | 2016-03-10 | A anti jamming unit for printed circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620184591.7U CN205544921U (en) | 2016-03-10 | 2016-03-10 | A anti jamming unit for printed circuit board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205544921U true CN205544921U (en) | 2016-08-31 |
Family
ID=56782066
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620184591.7U Expired - Fee Related CN205544921U (en) | 2016-03-10 | 2016-03-10 | A anti jamming unit for printed circuit board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205544921U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110783777A (en) * | 2018-07-12 | 2020-02-11 | 中兴通讯股份有限公司 | Anti-interference method, device and system |
-
2016
- 2016-03-10 CN CN201620184591.7U patent/CN205544921U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110783777A (en) * | 2018-07-12 | 2020-02-11 | 中兴通讯股份有限公司 | Anti-interference method, device and system |
| CN110783777B (en) * | 2018-07-12 | 2022-02-18 | 中兴通讯股份有限公司 | Anti-interference method, device and system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Anti interference device for printed circuit board Effective date of registration: 20200817 Granted publication date: 20160831 Pledgee: BEIQI FOTON MOTOR Co.,Ltd. Pledgor: Borgward Automotive (China) Co., Ltd. Registration number: Y2020990000977 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20210507 Granted publication date: 20160831 Pledgee: BEIQI FOTON MOTOR Co.,Ltd. Pledgor: Borgward Automotive (China) Co., Ltd. Registration number: Y2020990000977 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Anti interference device for printed circuit board Effective date of registration: 20210726 Granted publication date: 20160831 Pledgee: BEIQI FOTON MOTOR Co.,Ltd. Pledgor: Borgward Automotive (China) Co., Ltd. Registration number: Y2021990000644 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160831 |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
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