CN105960088A - Peak discharge circuit and printed circuit board provided with same - Google Patents
Peak discharge circuit and printed circuit board provided with same Download PDFInfo
- Publication number
- CN105960088A CN105960088A CN201610314905.5A CN201610314905A CN105960088A CN 105960088 A CN105960088 A CN 105960088A CN 201610314905 A CN201610314905 A CN 201610314905A CN 105960088 A CN105960088 A CN 105960088A
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- China
- Prior art keywords
- copper
- copper billet
- peak
- circuit board
- printed circuit
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Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0213—Electrical arrangements not otherwise provided for
- H05K1/0215—Grounding of printed circuits by connection to external grounding means
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
- H02H9/06—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage using spark-gap arresters
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0213—Electrical arrangements not otherwise provided for
- H05K1/0254—High voltage adaptations; Electrical insulation details; Overvoltage or electrostatic discharge protection ; Arrangements for regulating voltages or for using plural voltages
- H05K1/0257—Overvoltage protection
- H05K1/0259—Electrostatic discharge [ESD] protection
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/09—Shape and layout
- H05K2201/09209—Shape and layout details of conductors
- H05K2201/09372—Pads and lands
- H05K2201/09381—Shape of non-curved single flat metallic pad, land or exposed part thereof; Shape of electrode of leadless component
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
The invention discloses a peak discharge circuit and a printed circuit board provided with the same. The peak discharge circuit comprises a first copper-coated block and a second copper-coated block, and is characterized in that both the first copper-coated block and the second copper-coated block are in the shape of an isosceles triangle, the first copper-coated block and the second copper-coated block are symmetrically arranged in a mode that the vertex angles of the first copper-coated block and the second copper-coated block are opposite to each other, the middle of a bottom side of the first copper-coated block is communicated with an overcurrent channel circuit, and the middle of a bottom side of the second copper-coated block is communicated with a grounding line of the printed circuit board; when lightning surge invades and harasses the overcurrent channel circuit of equipment, lightning surge current flows to the peak of the first copper-coated block, current released by the peak of the first copper-coated block is received by the peak of the second copper-coated block and then released to the ground directly; and when the overcurrent channel circuit accumulates static charge because of usage, the static charge flows to the peak of the first copper-coated block, and the static charge released by the peak of the first copper-coated block is received by the peak of the second copper-coated block and then released to the ground directly.
Description
Technical field
The present invention relates to the technical field of printed circuit board (PCB), particularly relate to a kind of design on printed circuit board (pcb)
The peak discharge circuit of physical characteristic and printed circuit board (PCB) thereof.
Background technology
Transmission equipment in CATV HFC system, such as the equipment such as amplifier, optical workstation, due to natural phenomenas such as thunders and lightnings
The lightning surge caused, harasses the transmission cable into CATV HFC system and power line, and this is a kind of transition sensing strong voltage thunder
Hit (or electric current), be commonly called as induced lightening.This overvoltage (or overcurrent) is referred to as surge voltage (or surge current).Lightning surge is tight
Heavily endanger the work safety of CATV HFC system transfers equipment.Surge damnification is prevented to be always the safe and reliable fortune of connection-related electricity use subset
The key problem of row.In order to avoid lightning surge damages equipment, general input, the crossing of output port used at transmission equipment is flowed
Passage arranges the defensive measure of Electronic Protection device, will surge voltage within the shortest time with ground short circuit, make surge electricity
Flow point flows into ground, reaches to weaken and eliminate overvoltage, the purpose of overcurrent, thus plays the effect of protection equipment safety operation.
Conventional Electronic Protection device is as follows:
1, gas-discharge tube (GDT)
Its principle is when two interelectrode potential differences of gas-discharge tube reach to a certain degree, gap breakdown sparking electric discharge,
Thus overcurrent is released into ground.
Advantage: discharge capability is strong, discharge capacity is big (can accomplish more than 100kA), and leakage current is little；
Shortcoming: residual voltage is high (2 ~ 4kv), the response time is slow (≤100ns), has follow current (afterflow).
2, metal-oxide varistor (MOV)
At a certain temperature, electric conductivity is increased dramatically this device with the increase of voltage.It is a kind of be main with zinc oxide
The metal-oxide semiconductor (MOS) nonlinear resistance of composition.Not having during overvoltage is high value state, once overvoltage, immediately by voltage
Being restricted to certain value, its change in the instantaneous impedance is low value.
Advantage: discharge capacity is big, and residual voltage is relatively low, the response time is very fast (≤50 ns), without follow current (afterflow)；
Shortcoming: leakage current is relatively big, and aging speed is relatively fast.
3, Transient Suppression Diode (TVS)
Being a kind of device being specifically designed to over-voltage suppression, its core is the PN junction with larger sectional area, this PN junction work
Make when avalanche condition, there is stronger pulse absorbability.
Advantage: residual voltage is low, operation precision is high, and the response time fast (< 1ns), without follow current (afterflow)；
Shortcoming: flow-resistant capacity is poor, discharge capacity is little, general only hundreds of ampere.
The common feature more than protecting device is that device all presents high impedance below threshold voltage, once exceedes threshold value electricity
Pressure, then impedance the most drastically declines, and all has certain inhibitory action to surge voltage.But each with shortcoming, therefore according to concrete
Application scenario, general use in above-mentioned device one or several combine corresponding protection circuit.
Ounce (OZ) is unit of weight (ounce) and long measure, and during as long measure, 1OZ represents the copper of PCB
Paper tinsel thickness is about 36 μm, derives from the 8.9g/cm 1OZ weight3The fine copper of density tiles 1 square feet (=144inches's)
The thickness formed on area.
Printed circuit board peak discharge circuit of the present invention has the protective effect of the above several Electronic Protection device, because of
It is the peak discharge circuit of a kind of design physical characteristic on printed circuit board (pcb), will not increase equipment and materials cost
, so being the design of a kind of cost free.
Summary of the invention
For weak point present in above-mentioned technology, the present invention provides a kind of simple in construction, easy to operate spike to put
Electricity circuit and printed circuit board (PCB) thereof.
In order to achieve the above object, one peak discharge circuit of the present invention, cover copper billet and second copper-clad block including first,
Described first covers copper billet and second copper-clad block is isosceles triangle shape, first cover copper billet with second copper-clad block with drift angle to top
The form symmetry arrangement at angle, the flow channels circuit in the described first centre position, base and printed circuit board (PCB) covering copper billet is led mutually
Logical, the centre position, base of described second copper-clad block is conducted with the earth lead of printed circuit board (PCB)；Described first covers copper billet and
Two cover copper billet is each attached to the surface of printed circuit board (PCB), and described first to cover the drift angle of copper billet relative with the drift angle of second copper-clad block
Form corresponding peak point, when lightning surge is harassed on equipment flow channels circuit, and its lightning surge current direction first applies copper
The peak point of block, the electric current of the first peak point release covering copper billet is received by the peak point of second copper-clad block and then is directly released into ground；When
When flow channels circuit accumulates electrostatic charge because of use, flow of electrostatic charges is to the first peak point covering copper billet, and first covers the peak point of copper billet
The electrostatic charge of release is received by the peak point of second copper-clad block and then is directly released into ground.
Wherein, described first covers the equal in magnitude of copper billet and second copper-clad block, and the spacing between drift angle and drift angle is
0.15±0.01mm；The described first all length of sides covering copper billet and second copper-clad block are all higher than or equal to 4mm, described first covers copper
The thickness of block and second copper-clad block is all higher than or equal to 1 ounce.
Wherein, during printed circuit board (PCB) spraying green oil, described first covers and is placed with on copper billet and second copper-clad block
Solder mask, and then cover copper billet to first and second copper-clad block carries out welding resistance process, making first, to cover copper billet naked with second copper-clad block
Dew.
The printed circuit board (PCB) of the present invention a kind of band peak discharge circuit, including peak discharge circuit, alternating current and radio frequency electrical
The power input interface of stream and Switching Power Supply AC input interface, described peak discharge circuit includes that first covers copper billet and second
Covering copper billet, described first covers copper billet and second copper-clad block is isosceles triangle shape；The electric current of described power input interface is defeated
Go out end respectively with the input of Switching Power Supply AC input interface, first cover the centre position on copper billet base and earth lead is connected,
The centre position on described second copper-clad block base is connected with earth lead；Described first covers copper billet is each attached to print with second copper-clad block
The surface of printed circuit board, and described first cover the drift angle of copper billet relatively formed with the drift angle of second copper-clad block corresponding peak point；When
When lightning surge is harassed in power input interface, its lightning surge current direction first applies the peak point of copper billet, and first covers copper billet
The electric current of peak point release received by the peak point of second copper-clad block and then be directly released into ground, described Switching Power Supply AC input interface
Output electric current be safe current；Transmission cable between power input interface and Switching Power Supply AC input interface is because of time long
Between use and when accumulating electrostatic charge, flow of electrostatic charges is to the first peak point covering copper billet, and first covers the electrostatic of the peak point release of copper billet
Lotus is received by the peak point of second copper-clad block and then is directly released into ground.
Wherein, first in peak discharge circuit covers copper billet and second copper-clad block size is equal, and first covers copper billet and
Two cover the copper billet form symmetry arrangement with drift angle vertical angles, and the spacing between drift angle and drift angle is 0.15 ± 0.01mm；Described
The first all length of sides covering copper billet and second copper-clad block are all higher than or equal to 4mm, and described first covers copper billet and second copper-clad block
Thickness is all higher than or equal to 1 ounce.
Wherein, during printed circuit board (PCB) spraying green oil, described first covers and is placed with on copper billet and second copper-clad block
Solder mask, and then cover copper billet to first and second copper-clad block carries out welding resistance process, making first, to cover copper billet naked with second copper-clad block
Dew.
Wherein, this printed circuit board (PCB) being further opened with gas-discharge tube, the input of described gas-discharge tube is defeated with power supply
The current output terminal of incoming interface is connected, and the outfan of described gas discharge light is connected with earth lead；The two poles of the earth when gas-discharge tube
Between when producing sufficiently large electricity, the pole clearance between the two poles of the earth is discharged and punctures, and at this moment gas-discharge tube is just by state of insulation
It is transformed into conduction state, and then reduces the voltage of two interpolars.
Wherein, this printed circuit board (PCB) being further opened with choke induction, the input of described choke induction connects with power supply input
Mouthful current output terminal be connected, the outfan of described choke induction respectively with input, the peak discharge circuit of gas-discharge tube
Input and Switching Power Supply AC input interface input be connected, through the filtered electric current of choke induction from Switching Power Supply
AC input interface passes out.
Wherein, this printed circuit board (PCB) is further opened with shunt capacitance, the input of described shunt capacitance and choke induction
Outfan is connected, the output head grounding of described shunt capacitance.
Wherein, this printed circuit board (PCB) being further opened with isolation capacitance, the input of described isolation capacitance connects with power supply input
The current output terminal of mouth is connected, and the outfan of described isolation capacitance is connected with radio-frequency current outfan after isolation alternating current.
The invention has the beneficial effects as follows:
Compared with prior art, first in the peak discharge circuit of the present invention covers copper billet and second copper-clad block is isoceles triangle
Shape shape, its drift angle vertical angles, form corresponding peak point.First covers the centre position, base of copper billet and the mistake of printed circuit board (PCB)
Circulation road circuit is conducted, and the centre position, base of second copper-clad block is conducted with the earth lead of printed circuit board (PCB).When thunder and lightning wave
Gushing and harass on equipment flow channels circuit, its lightning surge current direction first applies the peak point of copper billet, and first covers the peak of copper billet
The electric current of point release is received by the peak point of second copper-clad block and then is directly released into ground；When flow channels circuit is because making for a long time
With and when accumulating electrostatic charge, flow of electrostatic charges is to the first peak point covering copper billet, and first covers the electrostatic charge of the peak point release of copper billet by the
The two peak points covering copper billet receive and then are directly released into ground.
The present invention, be applicable to CATV transmission equipment product, is the point of a kind of design physical characteristic on a printed circuit board
Peak discharge circuit, can improve the anti-lightning ability of the equipment such as amplifier, optical workstation in CATV HFC system.It is also applicable in it
His electronic equipment with on network line, it is to avoid the lightning surge voltage damages electronic equipment caused due to natural phenomenas such as thunders and lightnings,
Thus play the effect that protection electronic equipments safety runs.The peak discharge circuit of the present invention implement simple, intention is novel, zero one-tenth
This.
Accompanying drawing explanation
Fig. 1 is the structural representation of peak discharge circuit of the present invention；
Fig. 2 is the principle schematic of printed circuit board (PCB) of the present invention.
Main element symbol description is as follows:
1, peak discharge circuit 2, Switching Power Supply AC input interface
11, first covers copper billet 12, second copper-clad block
P1, power input interface M1, gas-discharge tube
L1, choke induction C1, shunt capacitance
C2, isolation capacitance RF OUT, radio-frequency current outfan.
Detailed description of the invention
In order to more clearly state the present invention, below in conjunction with the accompanying drawings the present invention is further described.
Refering to Fig. 1, one peak discharge circuit 1 of the present invention, cover copper billet 11 and second copper-clad block 12 including first, described
First covers copper billet 11 and second copper-clad block 12 is isosceles triangle shape, and first covers copper billet 11 with second copper-clad block 12 with drift angle
The form symmetry arrangement of vertical angles, the flow channels circuit in the first centre position, base and printed circuit board (PCB) covering copper billet 11 is led mutually
Logical, the centre position, base of second copper-clad block 12 is conducted with the earth lead of printed circuit board (PCB)；First covers copper billet 11 covers with second
Copper billet 12 is each attached to the surface of printed circuit board (PCB), and first covers the drift angle of copper billet 11 and the drift angle of second copper-clad block 12 relative to shape
Become corresponding peak point, when lightning surge is harassed on equipment flow channels circuit, and its lightning surge current direction first applies copper billet
Peak point, the electric current of the first peak point release covering copper billet 11 is received by the peak point of second copper-clad block 12 and then is directly released into ground；
When flow channels circuit accumulates electrostatic charge because of use, flow of electrostatic charges is to the first peak point covering copper billet 11, and first covers copper billet 11
The electrostatic charge of peak point release received by the peak point of second copper-clad block 12 and then be directly released into ground.
Compared to prior art, first in the peak discharge circuit 1 of the present invention covers copper billet 11 and second copper-clad block 12 is equal
For isosceles triangle shape, its drift angle vertical angles, form corresponding peak point.First centre position, base covering copper billet 11 and print
The flow channels circuit of printed circuit board is conducted, the centre position, base of second copper-clad block 12 and the earth lead phase of printed circuit board (PCB)
Conducting.When lightning surge is harassed on equipment flow channels circuit, its lightning surge current direction first applies the peak point of copper billet, the
The electric current of the one peak point release covering copper billet 11 is received by the peak point of second copper-clad block 12 and then is directly released into ground；Work as flow channels
When circuit accumulates electrostatic charge because using for a long time, flow of electrostatic charges is to the first peak point covering copper billet 11, and first covers copper billet 11
The electrostatic charge of peak point release is received by the peak point of second copper-clad block 12 and then is directly released into ground.
The present invention, be applicable to CATV transmission equipment product, is the point of a kind of design physical characteristic on a printed circuit board
Peak discharge circuit 1, can improve the anti-lightning ability of the equipment such as amplifier, optical workstation in CATV HFC system.It is also applicable in
On other electronic equipments and network line, it is to avoid the lightning surge voltage damages electronics caused due to natural phenomenas such as thunders and lightnings sets
Standby, thus play the effect that protection electronic equipments safety runs.
In the present embodiment, first covers the equal in magnitude of copper billet 11 and second copper-clad block 12, and between drift angle and drift angle
Spacing is 0.15 ± 0.01mm；The first all length of sides covering copper billet 11 and second copper-clad block 12 are all higher than or equal to 4mm, first covers
The thickness of copper billet 11 and second copper-clad block 12 is all higher than or equal to 1 ounce.Spacing between peak point controls at about 0.15mm,
Away from the excessive effect not having peak discharge；Spacing is too small to be easily caused short circuit and pyrophoric behavio(u)r occurs.
In the present embodiment, during printed circuit board (PCB) spraying green oil, first covers copper billet 11 and second copper-clad block 12
On be placed with solder mask, and then cover copper billet 11 to first and second copper-clad block 12 carries out welding resistance process, make first to cover copper billet 11
Exposed with second copper-clad block 12.
Further regard to Fig. 2, the printed circuit board (PCB) of the present invention a kind of band peak discharge circuit, including peak discharge circuit 1,
The power input interface P1 of alternating current and radio-frequency current and Switching Power Supply AC input interface 2, peak discharge circuit 1 includes first
Covering copper billet 11 and second copper-clad block 12, first covers copper billet 11 and second copper-clad block 12 is isosceles triangle shape；Power supply is defeated
The current output terminal of incoming interface P1 respectively with the input of Switching Power Supply AC input interface 2, the first centre covering copper billet 11 base
Position and earth lead are connected, and the centre position on second copper-clad block 12 base is connected with earth lead；First covers copper billet 11 and second
Cover copper billet 12 and be each attached to the surface of printed circuit board (PCB), and first to cover the drift angle of copper billet 11 relative with the drift angle of second copper-clad block 12
Form corresponding peak point；When lightning surge is harassed in power input interface P1, its lightning surge current direction first applies copper
The peak point of block, the electric current of the first peak point release covering copper billet 11 is received by the peak point of second copper-clad block 12 and then is directly released into
Ground, the output electric current of Switching Power Supply AC input interface 2 is safe current；When power input interface P1 inputs with Switching Power Supply AC
When transmission cable between interface 2 accumulates electrostatic charge because using for a long time, flow of electrostatic charges to the first peak point covering copper billet 11,
The electrostatic charge of the first peak point release covering copper billet 11 is received by the peak point of second copper-clad block 12 and then is directly released into ground.
In the present embodiment, first in peak discharge circuit 1 covers copper billet 11 and second copper-clad block 12 is equal in magnitude, the
One covers copper billet 11 and the second copper-clad block 12 form symmetry arrangement with drift angle vertical angles, and the spacing between drift angle and drift angle is
0.15±0.01mm；The first all length of sides covering copper billet 11 and second copper-clad block 12 are all higher than or equal to 4mm, first covers copper billet 11
It is all higher than with the thickness of second copper-clad block 12 or equal to 1 ounce.
In the present embodiment, during printed circuit board (PCB) spraying green oil, first covers copper billet 11 and second copper-clad block 12
On be placed with solder mask, and then cover copper billet 11 to first and second copper-clad block 12 carries out welding resistance process, make first to cover copper billet 11
Exposed with second copper-clad block 12.
In the present embodiment, this printed circuit board (PCB) is further opened with gas-discharge tube M1, the input of gas-discharge tube M1
Being connected with the current output terminal of power input interface P1, the outfan of gas discharge light is connected with earth lead；Work as gas-discharge tube
When two interpolars of M1 produce sufficiently large electricity, the pole clearance between the two poles of the earth is discharged and punctures, and at this moment gas-discharge tube M1 is just
It is transformed into conduction state by state of insulation, and then reduces the voltage of two interpolars.
In the present embodiment, this printed circuit board (PCB) is further opened with choke induction L1, the input of choke induction L1 and electricity
The current output terminal of source input interface P1 is connected, the outfan of choke induction L1 respectively with input, the point of gas-discharge tube M1
The input of peak discharge circuit 1 and the input of Switching Power Supply AC input interface 2 are connected, filtered through choke induction L1
Electric current passes out from Switching Power Supply AC input interface 2.
In the present embodiment, this printed circuit board (PCB) is further opened with shunt capacitance C1, the input of shunt capacitance C1 with grip
The outfan of stream inductance L1 is connected, the output head grounding of shunt capacitance C1.
In the present embodiment, this printed circuit board (PCB) is further opened with isolation capacitance C2, the input of isolation capacitance C2 and electricity
The current output terminal of source input interface P1 is connected, and the outfan of isolation capacitance C2 exports with radio-frequency current after isolation alternating current
End RF OUT is connected.
The several specific embodiments being only the present invention disclosed above, but the present invention is not limited to this, any ability
What the technical staff in territory can think change all should fall into protection scope of the present invention.
Claims (10)
1. a peak discharge circuit, it is characterised in that including that first covers copper billet and second copper-clad block, described first covers copper billet
Being isosceles triangle shape with second copper-clad block, first covers copper billet arranges with the form symmetry of drift angle vertical angles with second copper-clad block
Cloth, the flow channels circuit in the described first centre position, base and printed circuit board (PCB) covering copper billet is conducted, described second copper-clad
The centre position, base of block is conducted with the earth lead of printed circuit board (PCB)；Described first covers copper billet is each attached to second copper-clad block
The surface of printed circuit board (PCB), and described first cover the drift angle of copper billet relatively formed with the drift angle of second copper-clad block corresponding peak point,
When lightning surge is harassed on equipment flow channels circuit, its lightning surge current direction first applies the peak point of copper billet, and first covers
The electric current of the peak point release of copper billet is received by the peak point of second copper-clad block and then is directly released into ground；When flow channels circuit is because making
With and when accumulating electrostatic charge, flow of electrostatic charges is to the first peak point covering copper billet, and first covers the electrostatic charge of the peak point release of copper billet by the
The two peak points covering copper billet receive and then are directly released into ground.
Peak discharge circuit the most according to claim 1, it is characterised in that described first covers copper billet and second copper-clad block
Equal in magnitude, and the spacing between drift angle and drift angle is 0.15 ± 0.01mm；Described first institute covering copper billet and second copper-clad block
Having the length of side to be all higher than or equal to 4mm, described first thickness covering copper billet and second copper-clad block is all higher than or equal to 1 ounce.
Peak discharge circuit the most according to claim 2, it is characterised in that in the process of printed circuit board (PCB) spraying green oil
In, described first covers and is placed with solder mask on copper billet and second copper-clad block, and then covers copper billet to first and second copper-clad block enters
Row welding resistance processes, and making first, to cover copper billet exposed with second copper-clad block.
4. the printed circuit board (PCB) of a band peak discharge circuit, it is characterised in that include peak discharge circuit, alternating current and radio frequency
The power input interface of electric current and Switching Power Supply AC input interface, described peak discharge circuit includes that first covers copper billet and
Two cover copper billet, and described first covers copper billet and second copper-clad block is isosceles triangle shape；The electric current of described power input interface
Outfan respectively with the input of Switching Power Supply AC input interface, the first centre position and earth lead phase covering copper billet base
Even, the centre position on described second copper-clad block base is connected with earth lead；Described first to cover copper billet the most fixing with second copper-clad block
On the surface of printed circuit board (PCB), and the described first drift angle covering copper billet forms corresponding peak relatively with the drift angle of second copper-clad block
Point；When lightning surge is harassed in power input interface, its lightning surge current direction first applies the peak point of copper billet, and first covers
The electric current of the peak point release of copper billet is received by the peak point of second copper-clad block and then is directly released into ground, and described Switching Power Supply AC inputs
The output electric current of interface is safe current；Transmission cable between power input interface and Switching Power Supply AC input interface because of
When using for a long time and accumulate electrostatic charge, flow of electrostatic charges is to the first peak point covering copper billet, and first covers the peak point release of copper billet
Electrostatic charge is received by the peak point of second copper-clad block and then is directly released into ground.
The printed circuit board (PCB) of band peak discharge circuit the most according to claim 4, it is characterised in that at peak discharge circuit
In first cover copper billet and second copper-clad block size is equal, first covers copper billet and the second copper-clad block form pair with drift angle vertical angles
Claim arrangement, and the spacing between drift angle and drift angle is 0.15 ± 0.01mm；Described first covers all of copper billet and second copper-clad block
The length of side is all higher than or equal to 4mm, and described first thickness covering copper billet and second copper-clad block is all higher than or equal to 1 ounce.
The printed circuit board (PCB) of band peak discharge circuit the most according to claim 5, it is characterised in that spray at printed circuit board (PCB)
Being coated with during green oil, described first covers and is placed with solder mask on copper billet and second copper-clad block, so cover first copper billet and
Second copper-clad block carries out welding resistance process, and making first, to cover copper billet exposed with second copper-clad block.
The printed circuit board (PCB) of band peak discharge circuit the most according to claim 4, it is characterised in that on this printed circuit board (PCB)
Being further opened with gas-discharge tube, the input of described gas-discharge tube is connected with the current output terminal of power input interface, described
The outfan of gas discharge light is connected with earth lead；When two interpolars of gas-discharge tube produce sufficiently large electricity, the two poles of the earth it
Between pole clearance be discharged and puncture, at this moment gas-discharge tube is just transformed into conduction state by state of insulation, and then reduces by two
The voltage of interpolar.
The printed circuit board (PCB) of band peak discharge circuit the most according to claim 7, it is characterised in that on this printed circuit board (PCB)
Being further opened with choke induction, the input of described choke induction is connected with the current output terminal of power input interface, described chokes
The outfan of inductance connects with the input of gas-discharge tube, the input of peak discharge circuit and the input of Switching Power Supply AC respectively
The input of mouth is connected, and passes out from Switching Power Supply AC input interface through the filtered electric current of choke induction.
The printed circuit board (PCB) of band peak discharge circuit the most according to claim 8, it is characterised in that on this printed circuit board (PCB)
Being further opened with shunt capacitance, the input of described shunt capacitance is connected with the outfan of choke induction, described shunt capacitance defeated
Go out to hold ground connection.
The printed circuit board (PCB) of band peak discharge circuit the most according to claim 9, it is characterised in that this printed circuit board (PCB)
On be further opened with isolation capacitance, the input of described isolation capacitance is connected with the current output terminal of power input interface, described every
Outfan from electric capacity is connected with radio-frequency current outfan after isolation alternating current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610314905.5A CN105960088A (en) | 2016-05-13 | 2016-05-13 | Peak discharge circuit and printed circuit board provided with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610314905.5A CN105960088A (en) | 2016-05-13 | 2016-05-13 | Peak discharge circuit and printed circuit board provided with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105960088A true CN105960088A (en) | 2016-09-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610314905.5A Pending CN105960088A (en) | 2016-05-13 | 2016-05-13 | Peak discharge circuit and printed circuit board provided with same |
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| CN106572590A (en) * | 2016-11-03 | 2017-04-19 | 奇酷互联网络科技（深圳）有限公司 | Printed circuit board, manufacturing method thereof and electronic device |
| CN106793472A (en) * | 2017-01-20 | 2017-05-31 | 奇酷互联网络科技（深圳）有限公司 | A kind of printed circuit board (PCB) and preparation method thereof |
| CN112086438A (en) * | 2020-09-17 | 2020-12-15 | 珠海格力电器股份有限公司 | Chip electrostatic protection circuit, integrated circuit and electric equipment |
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| CN112086438A (en) * | 2020-09-17 | 2020-12-15 | 珠海格力电器股份有限公司 | Chip electrostatic protection circuit, integrated circuit and electric equipment |
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