CN206241453U - A kind of CUT remote control current interface circuit - Google Patents
A kind of CUT remote control current interface circuit Download PDFInfo
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- CN206241453U CN206241453U CN201621357167.4U CN201621357167U CN206241453U CN 206241453 U CN206241453 U CN 206241453U CN 201621357167 U CN201621357167 U CN 201621357167U CN 206241453 U CN206241453 U CN 206241453U
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Abstract
The utility model discloses a kind of CUT remote control current interface circuit, including signal isolation circuit and signal conditioning circuit, signal isolation circuit includes the 5th main amplifier, the 5th secondary amplifier, the 3rd main amplifier, linear optical coupling, and signal conditioning circuit includes the 3rd secondary amplifier, the first main amplifier, the first secondary amplifier；The output end of the 5th secondary amplifier is connected with the inverting input of the 5th main amplifier.The utility model constitutes the interface circuit of analog signal transmission using common mode inductance, operational amplifier, linear optical coupling and its subsidiary component, realize a series of functions such as isolation, removal interference, conditioning and the limitation of maximum of analog signal transmission, so that the electric current that host computer passes through this interface remote plasma cutting power supply, and the utility model circuit structure is simple, transmission performance stabilization, reliability.
Description
Technical field
The utility model is related to plasma cut field, and in particular to a kind of CUT remote control current interface electricity
Road.
Background technology
The CUT for largely using at present is mainly by the machine control cutting current, without remote control current
Interface.It is actual it is supporting during, it is impossible to meet user in supporting some automation equipments (for example：Robot) when need exist
The requirement of host computer remote control cutting current, mainly under the various different cutting currents of process stipulation, it is impossible in good time automatic to adjust
Section cutting current, host computer can not cover corresponding cutting current parameter when certain cutting specification is set, so as to substantially reduce
The automaticity of cutting.
Utility model content
Technical problem to be solved in the utility model be cutting current by the machine control, cutting current can not be by host computer
Automatically adjust, it is therefore intended that a kind of CUT remote control current interface circuit is provided, solve process stipulation it is various not
Under with cutting current, it is impossible to automatically adjust the problem of cutting current in good time, and host computer when certain cutting specification is set not
The problem of corresponding cutting current parameter can be covered, the automaticity of cutting is greatly improved.
The utility model is achieved through the following technical solutions：
A kind of CUT remote control current interface circuit, including signal isolation circuit and signal conditioning circuit, it is described
Signal isolation circuit includes the 5th main amplifier, the 5th secondary amplifier, the 3rd main amplifier, linear optical coupling, the signal conditioning circuit bag
Include the 3rd secondary amplifier, the first main amplifier, the first secondary amplifier；The output end of the described 5th secondary amplifier is anti-phase defeated with the 5th main amplifier
Enter end connection；The linear optical coupling includes a light emitting diode and two reception diodes, the negative electrode of its light emitting diode
Output end with the 5th main amplifier is connected, and its anode connects positive 15V voltages；The negative electrode of the reception diode in left side and the 5th main amplifier
Inverting input connection, its anode is connected with the in-phase input end of the 5th main amplifier, the negative electrode of the reception diode on right side and
The reverse input end connection of the 3rd main amplifier, its anode is connected with the in-phase input end of the 3rd main amplifier；The 3rd main amplifier
Output end be connected with the in-phase input end of the 3rd secondary amplifier；The output end and the first main amplifier in-phase input end of the 3rd secondary amplifier
Connection, the output end of the first secondary amplifier is connected with the in-phase input end of the first main amplifier；Described 5th secondary amplifier, the 3rd secondary fortune
Put, the first secondary amplifier, the first main respective output end of amplifier are connected with respective inverting input, wherein the 5th secondary amplifier is same
Phase input as circuit signal input, the output end of the first main amplifier as circuit signal output end.Employ letter
Number isolation circuit so that the utility model can be applied in this equipment with high frequency output of CUT, it is ensured that
Host computer is interference-free and the cutting current of control CUT that can stablize；Signal conditioning circuit is employed, is made
The cutting current for obtaining PC control CUT is more precisely more effective.By the 5th secondary amplifier, the 3rd secondary amplifier, the first master
Four voltage followers that amplifier, the first secondary amplifier are each constituted, make use of the input impedance of voltage follower infinitely great and defeated
The characteristics of going out impedance and be close to zero, it is ensured that the classification treatment of signal, adaptability of the interface circuit to connected equipment is improve,
Significantly reduce loss of the analog signal in transmission and processing process, it is ensured that the precision of remote control electric current.
Further, a kind of CUT remote control current interface circuit, also including the first common mode inductance, the 3rd common mode
Inductance, the 11st electric capacity, first resistor, second resistance, the 5th electric capacity, the 3rd electric capacity, the 3rd common mode inductance model
LT02, its pin 8 is connected with the in-phase input end of the 5th secondary amplifier, the pin 5 of the 11st electric capacity one end and the 3rd common mode inductance
Connection and this end ground connection, its other end are connected with the in-phase input end of the 5th secondary amplifier；Described its model of first common mode inductance
It is LT01, first resistor one end is connected with the in-phase input end of the first secondary amplifier, the pin 1 of its other end and the first common mode inductance
Connection, second resistance one end is connected with the output end of the first main amplifier, and its other end is connected with the pin 4 of the first common mode inductance,
5th electric capacity one end ground connection, its another termination 15V positive voltage；That one end of 5th capacity earth and the first common mode inductance
Pin 3 is connected, and that end that it connects positive voltage is connected with the pin 2 of the first common mode inductance；3rd electric capacity one end ground connection, its is another
One end is connected with the pin 4 of the first common mode inductance.3rd common mode inductance reduction common mode disturbances, the first common mode inductance is to common mode disturbances
Suppressed.
Further, the pin 1 of the 3rd common mode inductance connects No. second circuit, and its pin 4 connects No. nine circuit, No. second line
No. nine circuits of Lu Yu are the analog output signal line that host computer gives；The pin 5 of first common mode inductance connects the tenth No. four
Circuit, its pin 6 ground connection ride on Bus No. 11 circuit, its pin 7 connects the tenth No. two circuit, and its pin 8 connects the tenth No. three circuit, the 14th
Number circuit and ride on Bus No. 11 circuit are the input signal cable of plasma cutting power supply given value of current, the tenth No. two circuit and the 11st
It is the 15V D.C. regulated power supply lines that plasma cutting power supply is provided, the tenth No. three circuit and ride on Bus No. 11 circuit between number circuit
Between be plasma cutting power supply use limitation Setting signal line.3rd common mode inductance is used as input port, and the first common mode is electric
Sense significantly reduces high frequency common mode interference as output port, improves the safe and effective of interface circuit operation, reduces
Interference between position machine and CUT in given value of current analog signal transmission.
Further, signal isolation circuit also includes the tenth resistance, the 12nd electric capacity, the 8th electric capacity, the 11st resistance, the
14 resistance, the tenth electric capacity, the 4th electric capacity, it is reverse with the 5th main amplifier that the tenth resistance is connected to the 5th secondary amplifier output end
On the circuit of input connection, the 11st resistance is connected to the moon of the 5th main amplifier output end and the light emitting diode of linear optical coupling
On the circuit of pole connection, described 8th electric capacity one end is connected to the output end of the 5th main amplifier, and its other end is connected to linear light
On the circuit that the negative electrode of the reception diode in the left side of coupling is connected with the 5th main amplifier inverting input, the 12nd electric capacity one
End ground connection, its other end is connected and the positive 15V voltages of this termination with the positive power end of the 5th main amplifier；Tenth electric capacity one
End is connected with the inverting input of the 3rd main amplifier, and its other end is connected with the output end of the 3rd main amplifier, the 14th electricity
Resistance is connected in parallel on the tenth electric capacity two ends, and described 4th electric capacity one end is grounded, and the positive power end of its other end and the 3rd main amplifier connects
Connect and the positive 15V voltages of this termination.Tenth resistance, the 11st resistance, the 14th resistance play a part of current limliting, shunting, the tenth
Two electric capacity, the 8th electric capacity, the tenth electric capacity, the 4th electric capacity play a part of stopping direct current, signal coupling, filtering, phase shift.
Further, signal conditioning circuit also includes the 13rd resistance, the first potentiometer, the 9th resistance, 3rd resistor, the
One diode, the second diode, the 8th resistance, the 13rd resistance are connected to the output end and the 3rd secondary fortune of the 3rd main amplifier
On the circuit of the in-phase input end connection put, the in-phase input end of the 3rd secondary amplifier, the first potentiometer, the 9th resistance connect successively
Connect, the 9th resistance is grounded relative to the other end of the first potentiometer of connection；3rd resistor is connected to the output end of the 3rd secondary amplifier
On the circuit being connected with the first main amplifier in-phase input end；The output end of the anode of second diode and the first secondary amplifier connects
Connect, its negative electrode is connected with the 8th resistance, the 8th resistance is grounded relative to the other end of the second diode of connection, the one or two pole
The negative electrode of pipe is connected on the circuit that the second diode is connected with the 8th resistance, and its other end is connected to 3rd resistor with the first master
On the circuit of amplifier in-phase input end connection.The output maximum being made up of the first diode, the second diode and the 8th resistance
Limiting circuit, directly draws the limitation corresponding voltage signal of given electric current from cutting power supply, is caused in limit by the first diode
Analog voltage signal below electric current processed is unaffected, the pressure difference that the first diode brings by the second diode compensation, protects
The maximum output current of CUT is in the same size when having demonstrate,proved remote control with the machine.
Further, the 5th main amplifier, the 3rd main amplifier, the negative sense power end of the first main amplifier are grounded, the first main fortune
The positive power supply put terminates positive 15V power supplys.
The utility model compared with prior art, has the following advantages and advantages：The utility model utilizes common mode
Inductance, operational amplifier, linear optical coupling and its subsidiary component constitute the interface circuit of analog signal transmission, realize simulation letter
A series of functions such as limitation of the isolation of number transmission, removal interference, conditioning and maximum so that host computer passes through this interface remote control
The electric current of plasma cutting power supply, and the utility model circuit structure is simple, transmission performance stabilization, reliability.
Brief description of the drawings
Accompanying drawing described herein is used for providing further understanding the utility model embodiment, constitutes the one of the application
Part, does not constitute the restriction to the utility model embodiment.In the accompanying drawings：
Fig. 1 is the utility model structural representation.
Mark and corresponding parts title in accompanying drawing：
The common mode inductances of L1- first, the common mode inductances of L3- the 3rd, the electric capacity of C3- the 3rd, the electric capacity of C4- the 4th, the electric capacity of C5- the 5th,
The electric capacity of C8- the 8th, the electric capacity of C10- the tenth, the electric capacity of C11- the 11st, the electric capacity of C12- the 12nd, R1- first resistors, the electricity of R2- second
Resistance, R3- 3rd resistors, the resistance of R8- the 8th, the resistance of R9- the 9th, the resistance of R10- the tenth, the resistance of R11- the 11st, R13- the 13rd
Resistance, the resistance of R14- the 14th, the main amplifiers of N1A- first, the secondary amplifiers of N1B- first, the main amplifiers of N3A- the 3rd, the secondary fortune of N3B- the 3rd
Put, the main amplifiers of N5A- the 5th, the secondary amplifiers of N5B- the 5th, N4- linear optical couplings, the potentiometers of VR1- first, the diodes of V1- first, V2-
Second diode, No. second circuit of 02-, No. nine circuit of 09-, 11- ride on Bus No. 11 circuits, the tenth No. two circuit of 12-, 13-
Ten No. three circuits, the tenth No. four circuit of 14-, GND- earth terminals.
Specific embodiment
To make the purpose of this utility model, technical scheme and advantage become more apparent, with reference to embodiment and accompanying drawing,
The utility model is described in further detail, and exemplary embodiment of the present utility model and its explanation are only used for explaining this
Utility model, is not intended as to restriction of the present utility model.
Embodiment
As shown in figure 1, a kind of CUT remote control current interface circuit, including signal isolation circuit and signal condition
Circuit, the signal isolation circuit includes the 5th main amplifier N5A, the 5th secondary amplifier N5B, the 3rd main amplifier N3A, linear optical coupling
N4, signal conditioning circuit includes the 3rd secondary amplifier N3B, the first main amplifier N1A, the first secondary amplifier N1B；Described 5th secondary amplifier
The inverting input of the output end of N5B amplifier N5A main with the 5th is connected；The linear optical coupling N4 includes a light emitting diode
With two reception diodes, the output end of the negative electrode of its light emitting diode amplifier N5A main with the 5th is connected, and its anode meets positive 15V
Voltage；The inverting input of the wherein negative electrode amplifier N5A main with the 5th of the reception diode in left side is connected, and its anode and the 5th is led
The reverse input end of the in-phase input end connection of amplifier N5A, the negative electrode of the reception diode on right side and the 3rd main amplifier N3A connects
Connect, the in-phase input end of its anode amplifier N3A main with the 3rd is connected；The output end of the 3rd main amplifier N3A and the 3rd secondary fortune
Put the in-phase input end connection of N3B；The output end of the 3rd secondary amplifier N3B is connected with the first main amplifier N1A in-phase input ends, and first
The in-phase input end of the output end of secondary amplifier N1B amplifier N1A main with first is connected.5th secondary amplifier N5B, the 3rd secondary amplifier N3B,
First secondary amplifier N1B, the first main respective output ends of amplifier N1A are connected with respective inverting input.5th main amplifier N5A,
3rd main amplifier N3A, the negative sense power end of the first main amplifier N1A are grounded, and the positive power supply termination of the first main amplifier N1A is just
15V power supplys.
A kind of CUT remote control current interface circuit, also including the first common mode inductance L1, the 3rd common mode inductance L3,
11st electric capacity C11, first resistor R1, second resistance R2, the 5th electric capacity C5, the 3rd electric capacity C3, the 3rd common mode inductance L3
Model LT02, the in-phase input end of its pin 8 amplifier N5B secondary with the 5th be connected, the 11st electric capacity C11 one end and the 3rd common mode
The pin 5 of inductance L3 is connected and this end is grounded, and the in-phase input end of its other end amplifier N5B secondary with the 5th is connected；Described
One common mode inductance L1 its model LT01, the in-phase input end of first resistor R1 one end amplifier N1B secondary with first is connected, and its is another
End is connected with the pin 1 of the first common mode inductance L1, and the output end of second resistance R2 one end amplifier N1A main with first is connected, and its is another
One end is connected with the pin 4 of the first common mode inductance L1, the 5th electric capacity C5 one end ground connection, its another termination 15V positive voltage；The
That one end of five electric capacity C5 ground connection is connected with the pin 3 of the first common mode inductance L1, and that end that it connects positive voltage is electric with the first common mode
The pin 2 for feeling L1 is connected；3rd electric capacity C3 one end ground connection, its other end is connected with the pin 4 of the first common mode inductance L1.
The pin 1 of the 3rd common mode inductance L3 connects No. second circuit 02, and its pin 4 connects No. nine circuit 09, No. second circuit
02 and No. nine circuit 09 be analog output signal line that host computer gives；The pin 5 of the first common mode inductance L1 connects the tenth No. four
Circuit 14, its pin 6 ground connection ride on Bus No. 11 circuit 11, its pin 7 connects the tenth No. two circuit 12, and its pin 8 connects the tenth No. three circuit
13, the tenth No. four circuit 14 and ride on Bus No. 11 circuit 11 are the input signal cable of plasma cutting power supply given value of current, the 12nd
Number it is the 15V D.C. regulated power supply lines that plasma cutting power supply is provided, the tenth No. three between circuit 12 and ride on Bus No. 11 circuit 11
It is the limitation Setting signal line of plasma cutting power supply use between circuit 13 and ride on Bus No. 11 circuit 11.
Signal isolation circuit also include the tenth resistance R10, the 12nd electric capacity C12, the 8th electric capacity C8, the 11st resistance R11,
14th resistance R14, the tenth electric capacity C10, the 4th electric capacity C4, the tenth resistance R10 are connected to the 5th secondary amplifier N5B output ends
On the circuit being connected with the 5th main amplifier N5A reverse input ends, the 11st resistance R11 is connected to the 5th main amplifier N5A output ends
On the circuit being connected with the negative electrode of the light emitting diode of linear optical coupling N4, described 8th electric capacity C8 one end is connected to the 5th main amplifier
The output end of N5A, the negative electrode amplifier N5A main with the 5th that its other end is connected to the reception diode in the left side of linear optical coupling N4 is anti-
On the circuit of phase input connection, described 12nd electric capacity C12 one end is grounded, the forward direction of its other end and the 5th main amplifier N5A
Power end is connected and the positive 15V voltages of this termination；Described tenth electric capacity C10 one end and the inverting input of the 3rd main amplifier N3A
Connection, the output end of its other end amplifier N3A main with the 3rd is connected, and the 14th resistance R14 is connected in parallel on the tenth electric capacity C10 two
End, described 4th electric capacity C4 one end ground connection, the positive power end of its other end amplifier N3A main with the 3rd be connected and this termination just
15V voltages.
Signal isolation circuit, specifically, given value of current signal first passes through the 11st electric capacity C11 being filtered, is then input into
To the in-phase input end of the 5th secondary amplifier N5B, the inverting input of the 5th secondary amplifier N5B is connected with output end and constitutes voltage follow
Device, eventually passes by the 5th main amplifier N5A, the 3rd main amplifier N3A and linear optical coupling N4 and connected subsidiary component structure
Into 1:1 circuit linearity insulating circuit, the model that linear optical coupling N4 is used is HCNR200, and this circuit is linear optical coupling HCNR200's
One of typical application circuit, the size of current for flowing through the resistance R10 of resistance the tenth and the 14th resistance R14 is equal, and because herein
Tenth resistance R10 and the 14th resistance R14 is same to take 200K ohm, so the output voltage of the 5th secondary amplifier N5B is equal to the 3rd master
The output voltage of amplifier N3A, the 4th electric capacity C4 and the 12nd electric capacity C12 is power filtering capacitor, reduces interference, is improved at signal
The quality of reason.
Signal conditioning circuit also include the 13rd resistance R13, the first potentiometer VR1, the 9th resistance R9,3rd resistor R3,
First diode V1, the second diode V2, the 8th resistance R8, the 13rd resistance R13 are connected to the defeated of the 3rd main amplifier N3A
Go out on the circuit that end is connected with the in-phase input end of the 3rd pair amplifier N3B, in-phase input end, first electricity of the 3rd secondary amplifier N3B
Position device VR1, the 9th resistance R9 are sequentially connected, and the 9th resistance R9 is grounded relative to the other end of the first potentiometer VR1 of connection；3rd
Resistance R3 is connected on the circuit that the output end of the 3rd secondary amplifier N3B is connected with the first main amplifier N1A in-phase input ends；Described
The output end of the anode of two diode V2 amplifier N1B secondary with first is connected, and its negative electrode is connected with the 8th resistance R8, the 8th resistance R8
Other end ground connection relative to the second diode V2 of connection, the negative electrode of the first diode V1 be connected to the second diode V2 with
On the circuit of the 8th resistance R8 connections, its other end is connected to 3rd resistor R3 and is connected with the first main amplifier N1A in-phase input ends
Circuit on.
Signal conditioning circuit, specifically, the current analog Setting signal after isolation first passes through the 13rd resistance R13 and first
Electric resistance partial pressure after potentiometer VR1 and the 9th resistance R9 series connection, voltage output after partial pressure is same mutually defeated to the 3rd secondary amplifier N3B's
Enter end, the inverting input of the 3rd secondary amplifier N3B is connected with output end, voltage follower is constituted, then by the first main amplifier
Second resistance R2 and the 3rd electric capacity C3, second resistance R2 and the 3rd are arrived in the voltage follower output that N1A is constituted in the same way
Electric capacity C3 is filtered to signal RC, the effect of second resistance R2 also current limitings, the operational amplifier of prime is protected, finally by common mode
Inductance L1 export, wherein, the in-phase input end of the first main amplifier N1A, by the first diode V1 detect this put current potential whether
Higher than the voltage that the tenth No. three line 13 is limited, if it is, 3rd resistor R3, the first diode V1 and the 8th resistance R8 form electricity
Logical circulation road, the voltage that the voltage clamp of the first diode V1 anodes is limited in the tenth No. three line 13, again, the 5th electric capacity C5 pairs
The dc source of 15V is filtered.
The model and size of each component are as follows in the present embodiment：
First common mode inductance L1 --- LT01, the 3rd common mode inductance L3 --- LT02, the 3rd electric capacity C3 --- 22nF, the 4th
Electric capacity C4 --- 220nF, the 5th electric capacity C5 --- 220nF, the 8th electric capacity C8 --- 100pF, the tenth electric capacity C10 --- 100pF,
11st electric capacity C11 --- 100nF, the 12nd electric capacity C12 --- 220nF, first resistor R1 --- 10K ohm, second resistance
R2 --- 100 ohm, 3rd resistor R3 --- 10K ohm, the 8th resistance R8 --- 10K ohm, the 9th resistance R9 --- 4.7K
Ohm, the tenth resistance R10 --- 200K ohm, the 11st resistance R11 --- 680 ohm, the 13rd resistance R13 --- 4.7K Europe
Nurse, the 14th resistance R14 --- 200K ohm, the first main amplifier N1A --- LM358, the first secondary amplifier N1B --- LM358, the
Three main amplifier N3A --- LM358, the 3rd secondary amplifier N3B --- the pair amplifier of LM358, the 5th main amplifier N5A --- LM358, the 5th
The potentiometer VR1 of N5B --- LM358, linear optical coupling N4 --- HCNR200, first --- 503, the first diode V1 ---
1N4148, the second diode V2 --- 1N4148.
Above-described specific embodiment, is entered to the purpose of this utility model, technical scheme and beneficial effect
One step is described in detail, be should be understood that and be the foregoing is only specific embodiment of the present utility model, is not used to limit
Fixed protection domain of the present utility model, all any modifications within spirit of the present utility model and principle, made, equally replaces
Change, improve, should be included within protection domain of the present utility model.
Claims (6)
1. a kind of CUT remote control current interface circuit, it is characterised in that including signal isolation circuit and signal condition
Circuit, the signal isolation circuit includes the 5th main amplifier (N5A), the 5th secondary amplifier (N5B), the 3rd main amplifier (N3A), linear
Optocoupler (N4), the signal conditioning circuit includes the 3rd secondary amplifier (N3B), the first main amplifier (N1A), the first secondary amplifier (N1B)；
The output end of the described 5th secondary amplifier (N5B) is connected with the inverting input of the 5th main amplifier (N5A)；The linear optical coupling (N4)
Include a light emitting diode and two reception diodes, the negative electrode of its light emitting diode is defeated with the 5th main amplifier (N5A)
Go out end connection, its anode connects positive 15V voltages；The negative electrode of the wherein reception diode in left side is anti-phase with the 5th main amplifier (N5A)
Input is connected, and its anode is connected with the in-phase input end of the 5th main amplifier (N5A), the negative electrode of the reception diode on right side and the
The reverse input end connection of three main amplifiers (N3A), its anode is connected with the in-phase input end of the 3rd main amplifier (N3A)；Described
The output end of three main amplifiers (N3A) is connected with the in-phase input end of the 3rd secondary amplifier (N3B)；The output of the 3rd secondary amplifier (N3B)
End is connected with the first main amplifier (N1A) in-phase input end, output end and the first main amplifier (N1A) of the first pair amplifier (N1B)
In-phase input end is connected；Described 5th secondary amplifier (N5B), the 3rd secondary amplifier (N3B), the first secondary amplifier (N1B), the first main amplifier
(N1A) respective output end is connected with respective inverting input, wherein the in-phase input end of the 5th secondary amplifier (N5B) is used as electricity
The input of road signal, the output end of the first main amplifier (N1A) as circuit signal output end.
2. a kind of CUT remote control current interface circuit according to claim 1, it is characterised in that also including
One common mode inductance (L1), the 3rd common mode inductance (L3), the 11st electric capacity (C11), first resistor (R1), second resistance (R2),
Five electric capacity (C5), the 3rd electric capacity (C3), the 3rd common mode inductance (L3) the model LT02, the secondary amplifier of its pin 8 and the 5th
(N5B) in-phase input end connection, the 11st electric capacity (C11) one end is connected and this with the pin 5 of the 3rd common mode inductance (L3)
End ground connection, its other end is connected with the in-phase input end of the 5th secondary amplifier (N5B)；Described its model of first common mode inductance (L1)
LT01, first resistor (R1) one end is connected with the in-phase input end of the first secondary amplifier (N1B), its other end and the first common mode inductance
(L1) pin 1 is connected, and second resistance (R2) one end is connected with the output end of the first main amplifier (N1A), its other end and first
The pin 4 of common mode inductance (L1) is connected, the 5th electric capacity (C5) one end ground connection, its another termination 15V positive voltage；5th electric capacity
(C5) that one end of ground connection is connected with the pin 3 of the first common mode inductance (L1), that end that it connects positive voltage and the first common mode inductance
(L1) pin 2 is connected；3rd electric capacity (C3) one end ground connection, its other end connects with the pin 4 of the first common mode inductance (L1)
Connect.
3. a kind of CUT remote control current interface circuit according to claim 2, it is characterised in that the described 3rd
The pin 1 of common mode inductance (L3) connects No. second circuit (02), and its pin 4 connects No. nine circuit (09), No. second circuit (02) with
The analog output signal line that No. nine circuit (09) gives for host computer；The pin 5 of first common mode inductance (L1) connects the tenth
No. four circuits (14), its pin 6 is grounded ride on Bus No. 11 circuit (11), and its pin 7 connects the tenth No. two circuit (12), and its pin 8 connects the
Ten No. three circuits (13), the tenth No. four circuit (14) and ride on Bus No. 11 circuit (11) are defeated for plasma cutting power supply given value of current
Enter holding wire, be 15V direct currents that plasma cutting power supply is provided between the tenth No. two circuit (12) and ride on Bus No. 11 circuit (11)
Voltage-stabilized power supply line, be between the tenth No. three circuit (13) and ride on Bus No. 11 circuit (11) plasma cutting power supply use limitation to
Determine holding wire.
4. a kind of CUT remote control current interface circuit according to claim 1, it is characterised in that the signal
Isolation circuit also includes the tenth resistance (R10), the 12nd electric capacity (C12), the 8th electric capacity (C8), the 11st resistance (R11), the tenth
Four resistance (R14), the tenth electric capacity (C10), the 4th electric capacity (C4), the tenth resistance (R10) are connected to the 5th secondary amplifier (N5B)
On the circuit that output end is connected with the 5th main amplifier (N5A) reverse input end, the 11st resistance (R11) is connected to the 5th main amplifier
(N5A) on the circuit that output end is connected with the negative electrode of the light emitting diode of linear optical coupling (N4), described 8th electric capacity (C8) one end
The output end of the 5th main amplifier (N5A) is connected to, its other end is connected to the reception diode in the left side of linear optical coupling (N4)
On the circuit that negative electrode is connected with the 5th main amplifier (N5A) inverting input, the 12nd electric capacity (C12) one end ground connection, its is another
One end is connected and the positive 15V voltages of this termination with the positive power end of the 5th main amplifier (N5A)；Tenth electric capacity (C10) one
End is connected with the inverting input of the 3rd main amplifier (N3A), and its other end is connected with the output end of the 3rd main amplifier (N3A), institute
State the 14th resistance (R14) and be connected in parallel on the tenth electric capacity (C10) two ends, the 4th electric capacity (C4) one end ground connection, its other end with
The positive power end connection of the 3rd main amplifier (N3A) and the positive 15V voltages of this termination.
5. a kind of CUT remote control current interface circuit according to claim 1, it is characterised in that the signal
Modulate circuit also includes the 13rd resistance (R13), the first potentiometer (VR1), the 9th resistance (R9), 3rd resistor (R3), first
Diode (V1), the second diode (V2), the 8th resistance (R8), the 13rd resistance (R13) are connected to the 3rd main amplifier
(N3A) on the circuit that output end is connected with the in-phase input end of the 3rd secondary amplifier (N3B), the same phase of the 3rd secondary amplifier (N3B)
Input, the first potentiometer (VR1), the 9th resistance (R9) are sequentially connected, and the 9th resistance (R9) is relative to connecting the first potentiometer
(VR1) other end ground connection；3rd resistor (R3) is connected to output end and the first main amplifier (N1A) of the 3rd secondary amplifier (N3B)
On the circuit of in-phase input end connection；The anode of second diode (V2) is connected with the output end of the first secondary amplifier (N1B),
Its negative electrode is connected with the 8th resistance (R8), and the 8th resistance (R8) is grounded relative to the other end of the second diode of connection (V2), institute
The negative electrode for stating the first diode (V1) is connected on the circuit that the second diode (V2) is connected with the 8th resistance (R8), its other end
It is connected on the circuit that 3rd resistor (R3) is connected with the first main amplifier (N1A) in-phase input end.
6. a kind of CUT remote control current interface circuit according to claim 1, it is characterised in that the described 5th
Main amplifier (N5A), the 3rd main amplifier (N3A), the negative sense power end of the first main amplifier (N1A) are grounded, the first main amplifier (N1A)
Positive power supply terminate positive 15V power supplys.
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| CN201621357167.4U CN206241453U (en) | 2016-12-12 | 2016-12-12 | A kind of CUT remote control current interface circuit |
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| CN201621357167.4U CN206241453U (en) | 2016-12-12 | 2016-12-12 | A kind of CUT remote control current interface circuit |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108296617A (en) * | 2018-03-07 | 2018-07-20 | 上海威特力焊接设备制造股份有限公司 | Regulating current device and method for plasma cutting machine |
| CN113653354A (en) * | 2021-07-15 | 2021-11-16 | 朱柏树 | Construction method for reconstructing external wall |
| CN114415625A (en) * | 2021-12-22 | 2022-04-29 | 中煤科工集团沈阳研究院有限公司 | Intelligent inspection system and method for safety parameters of mine explosion-proof electrical appliance |
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2016
- 2016-12-12 CN CN201621357167.4U patent/CN206241453U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108296617A (en) * | 2018-03-07 | 2018-07-20 | 上海威特力焊接设备制造股份有限公司 | Regulating current device and method for plasma cutting machine |
| CN108296617B (en) * | 2018-03-07 | 2023-06-20 | 上海威特力焊接设备制造股份有限公司 | Current regulating device and method for plasma cutting machine |
| CN113653354A (en) * | 2021-07-15 | 2021-11-16 | 朱柏树 | Construction method for reconstructing external wall |
| CN114415625A (en) * | 2021-12-22 | 2022-04-29 | 中煤科工集团沈阳研究院有限公司 | Intelligent inspection system and method for safety parameters of mine explosion-proof electrical appliance |
| CN114415625B (en) * | 2021-12-22 | 2024-04-19 | 中煤科工集团沈阳研究院有限公司 | Intelligent inspection system and method for mine explosion-proof electrical appliance safety parameters |
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