CN102508138A - Simulation device of non-contact spark discharge process - Google Patents

Simulation device of non-contact spark discharge process Download PDF

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Publication number
CN102508138A
CN102508138A CN2011103109055A CN201110310905A CN102508138A CN 102508138 A CN102508138 A CN 102508138A CN 2011103109055 A CN2011103109055 A CN 2011103109055A CN 201110310905 A CN201110310905 A CN 201110310905A CN 102508138 A CN102508138 A CN 102508138A
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Prior art keywords
resistance
effect transistor
pulse width
width modulator
diode
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Inventor
于月森
伍小杰
左东升
张望
李世光
夏晨阳
谢冬莹
冯海兵
刘杰
何慧君
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XUZHOU BAODI ELECTRIC CO Ltd
China University of Mining and Technology CUMT
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XUZHOU BAODI ELECTRIC CO Ltd
China University of Mining and Technology CUMT
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Abstract

A kind of simulation device of non-contact spark discharge process belongs to the device of the simulation spark discharge process during intrinsic safety equipment development. The present apparatus is by power supply
Figure DEST_PATH_IMAGE001
, variable resistance
Figure 248924DEST_PATH_IMAGE002
, field effect transistor
Figure DEST_PATH_IMAGE003
, sampling resistor
Figure 919071DEST_PATH_IMAGE004
And load device
Figure DEST_PATH_IMAGE005
Composition, power supply
Figure 675675DEST_PATH_IMAGE001
Output access variable resistance
Figure 140285DEST_PATH_IMAGE002
, variable resistance
Figure 185602DEST_PATH_IMAGE002
Both ends inverse parallel have freewheeling diode , variable resistance
Figure 191921DEST_PATH_IMAGE002
Output connects field effect transistor
Figure 279962DEST_PATH_IMAGE003
Grid, field effect transistor
Figure 360045DEST_PATH_IMAGE003
Drain electrode connect load device
Figure 558945DEST_PATH_IMAGE005
, field effect transistor
Figure 962245DEST_PATH_IMAGE003
Source electrode connect sampling resistor
Figure 283505DEST_PATH_IMAGE004
, load device
Figure 37834DEST_PATH_IMAGE005
And sampling resistor The other end takes back power supply
Figure 111280DEST_PATH_IMAGE001
, field effect transistor Grid and drain electrode between be connected to flat wave resistance
Figure DEST_PATH_IMAGE007
And flat wave capacitor
Figure 579488DEST_PATH_IMAGE008
. Advantage: can simulate spark discharge process, instead of explosion test test intrinsic safety performance and carry out design, shorten intrinsic safety product development cycle, reduce development cost, for intrinsic safety performance inspection provide simplicity reference means.

Description

A kind of simulation device of non-contact spark discharge process
 
Technical field
The present invention relates to a kind of device of the simulation spark discharge process during intrinsic safety equipment development, especially a kind of simulation device of non-contact spark discharge process.
Background technology
With developing rapidly for the industry such as oil, chemical industry, metallurgy, production safety has caused the most attention of various circles of society.Especially because the inevitable leakage for producing explosive substance is formed dangerous place with a potential explosion by production-scale continuous expansion and the continuous improvement of automaticity, in process of production, production scene.This adds difficulty to the safety applications of all kinds of electrical equipments including instrument and meter for automation.
Inbeing safe explosion prevention form not only have it is simple in construction, it is applied widely, but also with it is easy to operate and easy to maintenance the features such as, therefore it is this suppress incendiary source energy be explosion-proof means intrinsic safe explosion-proof be meter manufacturer and user receiving.Due to the advantageous feature of intrinsic safety electrical equipment, increasingly, it is desired that using intrinsicallysafe electrical apparatus in control, communication equipment in Integrated Automation System of Coal-mine.
At present, essence safety type circuits, using defined spark experimental provision, carry out explosion test to judge mainly by the case where specifying experiment condition.Engineers and technicians are in development process in order to which whether the intrinsically safe circuit for verifying design meets design objective and requirement, qualified professional testing agency must be arrived and spark over experiment, not only cycle length, costly, and experiment percent of pass and experimental provision, the experience of experimenter, level, the external factors such as experimental situation are relevant, cause intrinsically safe circuit design difficulty greatly, limit the extensive use of intrinsic safety equipment.
The content of the invention
The invention aims to provide a kind of simulation device of non-contact spark discharge process, when solving intrinsic safety electric source and sparking over experiment test, test period length, it is costly the problem of.
The object of the present invention is achieved like this：The present apparatus is by power supply
Figure 2011103109055100002DEST_PATH_IMAGE001
, variable resistor
Figure 541074DEST_PATH_IMAGE002
, field-effect transistor, sampling resistor
Figure 852101DEST_PATH_IMAGE004
And load device
Figure 2011103109055100002DEST_PATH_IMAGE005
Composition, power supplyOutput access variable resistor
Figure 443893DEST_PATH_IMAGE002
, variable resistor
Figure 326398DEST_PATH_IMAGE002
Two ends inverse parallel have fly-wheel diode, variable resistor
Figure 418168DEST_PATH_IMAGE002
Output connects field-effect transistor
Figure 669152DEST_PATH_IMAGE003
Grid, field-effect transistor
Figure 355348DEST_PATH_IMAGE003
Drain electrode connect load device
Figure 624656DEST_PATH_IMAGE005
, field-effect transistor
Figure 738105DEST_PATH_IMAGE003
Source electrode connect sampling resistor
Figure 476385DEST_PATH_IMAGE004
, load deviceAnd sampling resistorThe other end takes back power supply
Figure 374437DEST_PATH_IMAGE001
, field-effect transistor
Figure 334434DEST_PATH_IMAGE003
Grid and drain electrode between be connected to flat ripple resistance
Figure 2011103109055100002DEST_PATH_IMAGE007
And flat wave capacitor
Figure 424750DEST_PATH_IMAGE008
。
Described power supply
Figure 606332DEST_PATH_IMAGE001
By feeder ear
Figure 2011103109055100002DEST_PATH_IMAGE009
, pulse width modulator UC3842, transformer T1, photoelectrical coupler PC817, adjustable shunt reference source TL431 and resistance, electric capacity and diode component composition, wherein transformer T1By two primary side windingsN p、N aWith a vice-side windingN sComposition, feeder ear
Figure 874634DEST_PATH_IMAGE009
Negative pole is grounded, feeder ear
Figure 774457DEST_PATH_IMAGE009
Positive pole pass through resistance
Figure 402884DEST_PATH_IMAGE010
With pulse width modulator UC3842's
Figure 2011103109055100002DEST_PATH_IMAGE011
End is connected, and by by resistance
Figure 252022DEST_PATH_IMAGE012
、Electric capacity and diode
Figure 940493DEST_PATH_IMAGE014
The RCD clamp circuits of composition and transformer T1WindingN pConnect, transformer T1WindingN aPass through diode
Figure 2011103109055100002DEST_PATH_IMAGE015
, diode
Figure 875082DEST_PATH_IMAGE016
Rectification and electric capacity
Figure 2011103109055100002DEST_PATH_IMAGE017
, electric capacity
Figure 307200DEST_PATH_IMAGE018
It is connected to pulse width modulator UC3842's after filtering
Figure 463375DEST_PATH_IMAGE011
End；Pulse width modulator UC3842 Out ends pass through resistanceTrigger switch pipe Q, switching tube Q drain electrode access transformer T1Vice-side windingN p, switching tube Q source electrode passes through resistance
Figure 73479DEST_PATH_IMAGE020
Ground connection；Pulse width modulator UC3842 CsEnd passes through resistance
Figure 2011103109055100002DEST_PATH_IMAGE021
, electric capacityCGround connection；Pulse width modulator UC3842's
Figure 744632DEST_PATH_IMAGE022
It is terminated with resistance
Figure 2011103109055100002DEST_PATH_IMAGE023
And electric capacity；Sampling resistor
Figure 470416DEST_PATH_IMAGE004
Upper end pass through resistanceThe input in the same direction of operational amplifier is connected to, the reverse input end ground connection of operational amplifier is connected to resistance between the input in the same direction and output end of operational amplifier
Figure 500689DEST_PATH_IMAGE026
, the output of operational amplifier terminates to pulse width modulator UC3842 Comp ends；Transformer T1Vice-side windingN sPass through diodeIt is connected to the input of the simulation device of non-contact spark discharge process, diode
Figure 409870DEST_PATH_IMAGE027
Two ends are parallel with the electric capacity of series connection
Figure 183791DEST_PATH_IMAGE028
And resistance
Figure 2011103109055100002DEST_PATH_IMAGE029
, diode
Figure 127608DEST_PATH_IMAGE027
Negative electrode pass through resistance
Figure 266465DEST_PATH_IMAGE030
It is connected to the anode of photoelectrical coupler PC817 primary sides；The negative electrode of photoelectrical coupler PC817 primary sides is connected to adjustable shunt reference source TL431 negative electrode, and adjustable shunt reference source TL431 plus earth is connected to the electric capacity of series connection between adjustable shunt reference source TL431 negative electrode and benchmark pole
Figure 2011103109055100002DEST_PATH_IMAGE031
And resistance
Figure 646631DEST_PATH_IMAGE032
, adjustable resistance is connected between adjustable shunt reference source TL431 benchmark pole and ground
Figure 2011103109055100002DEST_PATH_IMAGE033
；The colelctor electrode of photoelectrical coupler PC817 secondary is connected to pulse width modulator UC3842 Comp ends, and the colelctor electrode of photoelectrical coupler PC817 secondary passes through resistance
Figure 974975DEST_PATH_IMAGE034
It is connected to pulse width modulator UC3842 Vref ends, the source ground of photoelectrical coupler PC817 secondary；Pulse width modulator UC3842 Fb ends and GND ends ground connection.
Beneficial effect：As a result of such scheme, spark discharge process simulation device utilizes field-effect transistorThe short trouble of opening process analog circuit；Work as field-effect transistor
Figure 332324DEST_PATH_IMAGE003
When opening, field-effect transistor
Figure 950518DEST_PATH_IMAGE003
The voltage at two ends slowly declines, while field-effect transistor
Figure 3925DEST_PATH_IMAGE003
The electric current at two ends, which is first sharply increased, then to be declined, and forms spike；Regulation power supply
Figure 843705DEST_PATH_IMAGE001
And variable resistor
Figure 386682DEST_PATH_IMAGE002
, make by field-effect transistor
Figure 757752DEST_PATH_IMAGE003
The rate of change of the voltage and current at two ends meets the performance indications of actual requirement, realizes contactless simulation spark discharge process.The present apparatus reduces intrinsicallysafecircuit in development because lighting the indefinite multiple progress spark experiment of situation needs of effect to spark and increased cost, efficiently reduce the R＆D cycle, the voltage current waveform that simple spark is lighted is obtained, the purpose of the present invention has been reached.
Advantage：Spark discharge process can be simulated, is tested instead of explosion test and intrinsic safety performance and carries out design, shortened intrinsic safety product development cycle, reduce development cost, easy reference means are provided for inspections of intrinsic safety performance.
Brief description of the drawings：
Fig. 1 is structure chart of the invention.
Fig. 2 is embodiment circuit structure diagram of the invention.
Fig. 3 is embodiments of the invention oscillogram.
In figure：1st, power supply
Figure 349270DEST_PATH_IMAGE001
；2nd, variable resistor
Figure 371453DEST_PATH_IMAGE002
；3rd, fly-wheel diode
Figure 898380DEST_PATH_IMAGE006
；4th, flat ripple resistance
Figure 678117DEST_PATH_IMAGE007
；5th, flat wave capacitor
Figure 73326DEST_PATH_IMAGE008
；6th, field-effect transistor
Figure 700748DEST_PATH_IMAGE003
；7th, load device
Figure 523210DEST_PATH_IMAGE005
；8th, sampling resistor
Figure 852561DEST_PATH_IMAGE004
；9th, field-effect transistorThe voltage waveform at two ends；10th, field-effect transistor is passed through
Figure 550967DEST_PATH_IMAGE003
The current waveform at two ends.
Embodiment：
Technical scheme, but protection scope of the present invention not limited to this are further illustrated with specific embodiment below.
Embodiment 1：The present apparatus is main by power supply
Figure 544331DEST_PATH_IMAGE001
1st, variable resistor2nd, field-effect transistor6th, sampling resistor
Figure 700003DEST_PATH_IMAGE004
Figure 700003DEST_PATH_IMAGE004
8 and load device
Figure 864268DEST_PATH_IMAGE005
Figure 864268DEST_PATH_IMAGE005
7 compositions, power supply1 output access variable resistor 2, variable resistor
Figure 899854DEST_PATH_IMAGE002
Figure 899854DEST_PATH_IMAGE002
2 two ends inverse parallel has fly-wheel diode
Figure 500600DEST_PATH_IMAGE006
Figure 500600DEST_PATH_IMAGE006
3, variable resistor
Figure 963942DEST_PATH_IMAGE002
Figure 963942DEST_PATH_IMAGE002
2 outputs connect field-effect transistor
Figure 370652DEST_PATH_IMAGE003
Figure 370652DEST_PATH_IMAGE003
6 grid, field-effect transistor
Figure 603051DEST_PATH_IMAGE003
Figure 603051DEST_PATH_IMAGE003
6 drain electrode connects load device
Figure 187747DEST_PATH_IMAGE005
Figure 187747DEST_PATH_IMAGE005
7, field-effect transistor
Figure 138385DEST_PATH_IMAGE003
Figure 138385DEST_PATH_IMAGE003
6 source electrode connects sampling resistor
Figure 83208DEST_PATH_IMAGE004
Figure 83208DEST_PATH_IMAGE004
8, load device
Figure 435692DEST_PATH_IMAGE005
Figure 435692DEST_PATH_IMAGE005
7 and sampling resistor 8 other ends take back power supply
Figure 629224DEST_PATH_IMAGE001
1, field-effect transistorFlat ripple resistance is connected between 6 grid and drain electrode4 and flat wave capacitor
Figure 511226DEST_PATH_IMAGE008
Figure 511226DEST_PATH_IMAGE008
 5。
Described power supply
Figure 436457DEST_PATH_IMAGE001
1 by feeder ear
Figure 723082DEST_PATH_IMAGE009
, pulse width modulator UC3842, transformer T1, photoelectrical coupler PC817, adjustable shunt reference source TL431 and resistor-capacitor diode device composition, wherein transformer T1By two primary side windingsN p、N aWith a vice-side windingN sComposition.Feeder earNegative pole is grounded, feeder ear
Figure 881979DEST_PATH_IMAGE009
Positive pole pass through
Figure 294505DEST_PATH_IMAGE010
With pulse width modulator UC3842's
Figure 384821DEST_PATH_IMAGE011
End is connected, and by by resistance, electric capacity
Figure 21656DEST_PATH_IMAGE013
And diode
Figure 468949DEST_PATH_IMAGE014
The RCD clamp circuits of composition and transformer T1WindingN pConnect, transformer T1WindingN aPass through diode
Figure 35059DEST_PATH_IMAGE015
, diodeRectification and electric capacity
Figure 832388DEST_PATH_IMAGE017
, electric capacity
Figure 953928DEST_PATH_IMAGE018
It is connected to pulse width modulator UC3842's after filtering
Figure 386046DEST_PATH_IMAGE011
End；Pulse width modulator UC3842 Out ends pass through resistance
Figure 542221DEST_PATH_IMAGE019
Trigger switch pipe Q, switching tube Q drain electrode access transformer T1Vice-side windingN p, switching tube Q source electrode passes through resistance
Figure 152325DEST_PATH_IMAGE020
Ground connection；Pulse width modulator UC3842 CsEnd passes through resistance
Figure 761161DEST_PATH_IMAGE021
, electric capacityCGround connection；Pulse width modulator UC3842'sIt is terminated with resistance
Figure 555122DEST_PATH_IMAGE023
And electric capacity
Figure 523078DEST_PATH_IMAGE024
；Sampling resistor
Figure 619210DEST_PATH_IMAGE004
Figure 619210DEST_PATH_IMAGE004
8 upper end passes through resistance
Figure 393131DEST_PATH_IMAGE025
The input in the same direction of operational amplifier is connected to, operational amplifier selection LM308, operational amplifier LM308 reverse input end ground connection are connected to resistance between operational amplifier LM308 input in the same direction and output end
Figure 258318DEST_PATH_IMAGE026
, operational amplifier LM308 output terminates to pulse width modulator UC3842 Comp ends；Transformer T1Vice-side windingN sPass through diodeIt is connected to the input of the simulation device of non-contact spark discharge process, diode
Figure 793653DEST_PATH_IMAGE027
Two ends are parallel with the electric capacity of series connection
Figure 308948DEST_PATH_IMAGE028
And resistance
Figure 90959DEST_PATH_IMAGE029
, diode
Figure 400718DEST_PATH_IMAGE027
Negative electrode pass through resistanceIt is connected to the anode of photoelectrical coupler PC817 primary sides；The negative electrode of photoelectrical coupler PC817 primary sides is connected to adjustable shunt reference source TL431 negative electrode, and adjustable shunt reference source TL431 plus earth is connected to the electric capacity of series connection between adjustable shunt reference source TL431 negative electrode and benchmark pole
Figure 337898DEST_PATH_IMAGE031
And resistance
Figure 177678DEST_PATH_IMAGE032
, adjustable resistance is connected between adjustable shunt reference source TL431 benchmark pole and ground
Figure 720655DEST_PATH_IMAGE033
；The colelctor electrode of photoelectrical coupler PC817 secondary is connected to pulse width modulator UC3842 Comp ends, and the colelctor electrode of photoelectrical coupler PC817 secondary passes through resistanceIt is connected to pulse width modulator UC3842 Vref ends, the source ground of photoelectrical coupler PC817 secondary；Pulse width modulator UC3842 Fb ends and GND ends ground connection.
Described power supply1 provides electric energy for the device；Sampling resistor
Figure 377529DEST_PATH_IMAGE002
Figure 377529DEST_PATH_IMAGE002
8 are used to adjust spark discharge intensity to be simulated；Field-effect transistor
Figure 356987DEST_PATH_IMAGE003
Figure 356987DEST_PATH_IMAGE003
6 are used for the spark discharge experimental facilities of the former complex and expensive of replacement, and detection passes through field-effect transistor
Figure 136724DEST_PATH_IMAGE003
Figure 136724DEST_PATH_IMAGE003
6 voltage change ratio and current changing rate, so as to judge whether grade of spark is safe；Described load device
Figure DEST_PATH_IMAGE035
Figure DEST_PATH_IMAGE035
7 can be the combination of resistance, inductance and electric capacity, to adapt to various types of loads.In use, passing through regulation power supply
Figure 344982DEST_PATH_IMAGE001
1 and variable resistor
Figure 159355DEST_PATH_IMAGE002
Figure 159355DEST_PATH_IMAGE002
2, detect field-effect transistor
Figure 44134DEST_PATH_IMAGE003
The voltage waveform 9 at 6 two ends and pass through field-effect transistor
Figure 311167DEST_PATH_IMAGE003
The current waveform 10 at 6 two ends simultaneously analyzes their rate of change, contrasts the index of actual requirement, and whether the intrinsically safe circuit of checking design meets design objective and requirement, realizes contactless simulation spark discharge process.
The present embodiment uses flyback converter topology, and parts selection is as follows：Using 100-375V feeder ears, described variable resistor
Figure 510067DEST_PATH_IMAGE002
Figure 510067DEST_PATH_IMAGE002
2 Standard resistance ranges take 0-100
Figure 991996DEST_PATH_IMAGE036
, flat ripple resistance
Figure 985359DEST_PATH_IMAGE007
4 resistances take 2
Figure 802006DEST_PATH_IMAGE036
, flat wave capacitor 5 spans are 0-10, pulse width modulator selection UC3842, photoelectrical coupler uses PC817, potentiometer
Figure 869593DEST_PATH_IMAGE038
Standard resistance range take 0-100
Figure DEST_PATH_IMAGE039
, adjustable shunt reference source uses TL431, resistance
Figure 361754DEST_PATH_IMAGE026
、
Figure 603379DEST_PATH_IMAGE025
Value is 10k
Figure 691552DEST_PATH_IMAGE036
；Operational amplifier selects LM308.
In power supply
Figure 335023DEST_PATH_IMAGE001
In 1, by feeder ear
Figure 732506DEST_PATH_IMAGE009
, transformer T1, photoelectrical coupler PC817, potentiometer
Figure 461428DEST_PATH_IMAGE038
, adjustable shunt reference source TL431 and pulse width modulator UC3842 composition, the power supply
Figure 540242DEST_PATH_IMAGE001
1 powers for simulation device of non-contact spark discharge process of the present invention, and according to topological structure and parts selection described above, the input that simulation device of non-contact spark discharge process is powered can obtain 12-36V DC voltage.In use, by adjusting feeder ear
Figure 851269DEST_PATH_IMAGE009
, potentiometer
Figure 622916DEST_PATH_IMAGE038
And variable resistor 2, detect field-effect transistorThe voltage waveform 9 at 6 two ends and pass through field-effect transistor
Figure 683910DEST_PATH_IMAGE003
The current waveform 10 at 6 two ends simultaneously analyzes their rate of change, contrasts the index of actual requirement, and whether the intrinsically safe circuit of checking design meets design objective and requirement, reaches the purpose of contactless simulation spark discharge process.

Claims (2)

1. a kind of simulation device of non-contact spark discharge process, it is characterized in that：The present apparatus is by power supply
Figure 2011103109055100001DEST_PATH_IMAGE001
, variable resistor
Figure 389032DEST_PATH_IMAGE002
, field-effect transistor
Figure 2011103109055100001DEST_PATH_IMAGE003
, sampling resistorAnd load device
Figure 2011103109055100001DEST_PATH_IMAGE005
Composition, power supply
Figure 122949DEST_PATH_IMAGE001
Output access variable resistor
Figure 595519DEST_PATH_IMAGE002
, variable resistorTwo ends inverse parallel have fly-wheel diode
Figure 696516DEST_PATH_IMAGE006
, variable resistorOutput connects field-effect transistor
Figure 857687DEST_PATH_IMAGE003
Grid, field-effect transistorDrain electrode connect load device
Figure 367614DEST_PATH_IMAGE005
, field-effect transistor
Figure 395613DEST_PATH_IMAGE003
Source electrode connect sampling resistor
Figure 639512DEST_PATH_IMAGE004
, load deviceAnd sampling resistor
Figure 542058DEST_PATH_IMAGE004
The other end takes back power supply, field-effect transistor
Figure 409836DEST_PATH_IMAGE003
Grid and drain electrode between be connected to flat ripple resistance
Figure 2011103109055100001DEST_PATH_IMAGE007
And flat wave capacitor
Figure 832728DEST_PATH_IMAGE008
。
2. a kind of simulation device of non-contact spark discharge process according to claim 1, it is characterized in that：Described power supply
Figure 32896DEST_PATH_IMAGE001
By feeder ear
Figure 2011103109055100001DEST_PATH_IMAGE009
, pulse width modulator UC3842, transformer T1, photoelectrical coupler PC817, adjustable shunt reference source TL431 and resistance, electric capacity and diode component composition, wherein transformer T1By two primary side windingsN p、N aWith a vice-side windingN sComposition, feeder ear
Figure 402697DEST_PATH_IMAGE009
Negative pole is grounded, feeder ear
Figure 355610DEST_PATH_IMAGE009
Positive pole pass through resistance
Figure 152665DEST_PATH_IMAGE010
With pulse width modulator UC3842's
Figure 2011103109055100001DEST_PATH_IMAGE011
End is connected, and by by resistance
Figure 574550DEST_PATH_IMAGE012
、
Figure 2011103109055100001DEST_PATH_IMAGE013
Electric capacity and diode
Figure 810359DEST_PATH_IMAGE014
The RCD clamp circuits of composition and transformer T1WindingN pConnect, transformer T1WindingN aPass through diode
Figure 2011103109055100001DEST_PATH_IMAGE015
, diode
Figure 634090DEST_PATH_IMAGE016
Rectification and electric capacity, electric capacity
Figure 664363DEST_PATH_IMAGE018
It is connected to pulse width modulator UC3842's after filtering
Figure 760495DEST_PATH_IMAGE011
End；Pulse width modulator UC3842 Out ends pass through resistanceTrigger switch pipe Q, switching tube Q drain electrode access transformer T1Vice-side windingN p, switching tube Q source electrode passes through resistance
Figure 279289DEST_PATH_IMAGE020
Ground connection；Pulse width modulator UC3842 CsEnd passes through resistance, electric capacityCGround connection；Pulse width modulator UC3842'sIt is terminated with resistance
Figure DEST_PATH_IMAGE023
And electric capacity
Figure 345651DEST_PATH_IMAGE024
；Sampling resistor
Figure 742128DEST_PATH_IMAGE004
Upper end pass through resistance
Figure DEST_PATH_IMAGE025
The input in the same direction of operational amplifier is connected to, the reverse input end ground connection of operational amplifier is connected to resistance between the input in the same direction and output end of operational amplifier
Figure 54161DEST_PATH_IMAGE026
, the output of operational amplifier terminates to pulse width modulator UC3842 Comp ends；Transformer T1Vice-side windingN sPass through diode
Figure DEST_PATH_IMAGE027
It is connected to the input of the simulation device of non-contact spark discharge process, diode
Figure 852483DEST_PATH_IMAGE027
Two ends are parallel with the electric capacity of series connection
Figure 162242DEST_PATH_IMAGE028
And resistance
Figure DEST_PATH_IMAGE029
, diode
Figure 295283DEST_PATH_IMAGE027
Negative electrode pass through resistance
Figure 348690DEST_PATH_IMAGE030
It is connected to the anode of photoelectrical coupler PC817 primary sides；The negative electrode of photoelectrical coupler PC817 primary sides is connected to adjustable shunt reference source TL431 negative electrode, and adjustable shunt reference source TL431 plus earth is connected to the electric capacity of series connection between adjustable shunt reference source TL431 negative electrode and benchmark pole
Figure DEST_PATH_IMAGE031
And resistance
Figure 1519DEST_PATH_IMAGE032
, adjustable resistance is connected between adjustable shunt reference source TL431 benchmark pole and ground
Figure DEST_PATH_IMAGE033
；The colelctor electrode of photoelectrical coupler PC817 secondary is connected to pulse width modulator UC3842 Comp ends, and the colelctor electrode of photoelectrical coupler PC817 secondary passes through resistance
Figure 544496DEST_PATH_IMAGE034
It is connected to pulse width modulator UC3842 Vref ends, the source ground of photoelectrical coupler PC817 secondary；Pulse width modulator UC3842 Fb ends and GND ends ground connection.
CN2011103109055A 2011-10-14 2011-10-14 Simulation device of non-contact spark discharge process Pending CN102508138A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104716847A (en) * 2013-12-12 2015-06-17 深圳市海洋王照明工程有限公司 Small-power switching power source circuit and small-power switching power source

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0246788A2 (en) * 1986-05-13 1987-11-25 British Aerospace Public Limited Company Pulse generating circuits
US5262805A (en) * 1988-08-19 1993-11-16 Presstek, Inc. Drive circuits for spark-discharge imaging apparatus
CN1767299A (en) * 2005-03-25 2006-05-03 刘树林 Capacitance short-circuit spark energy releaser
CN101572478A (en) * 2009-06-09 2009-11-04 上海三基电子工业有限公司 Switching power supply with intrinsic safety module

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0246788A2 (en) * 1986-05-13 1987-11-25 British Aerospace Public Limited Company Pulse generating circuits
US5262805A (en) * 1988-08-19 1993-11-16 Presstek, Inc. Drive circuits for spark-discharge imaging apparatus
CN1767299A (en) * 2005-03-25 2006-05-03 刘树林 Capacitance short-circuit spark energy releaser
CN101572478A (en) * 2009-06-09 2009-11-04 上海三基电子工业有限公司 Switching power supply with intrinsic safety module

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
夏泽中，王彬，李军: "基于UC3842的单端反激式开关电源的设计与分析", 《电源技术应用》, 30 June 2008 (2008-06-30) *
穆丽娟: "一种本安电源过流测试电路", 《煤炭科学技术》, 31 December 2010 (2010-12-31) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104716847A (en) * 2013-12-12 2015-06-17 深圳市海洋王照明工程有限公司 Small-power switching power source circuit and small-power switching power source

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Application publication date: 20120620