CN106533211A - Full-wave rectifier design-based micro electric welding machine circuit - Google Patents
Full-wave rectifier design-based micro electric welding machine circuit Download PDFInfo
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- CN106533211A CN106533211A CN201611067948.4A CN201611067948A CN106533211A CN 106533211 A CN106533211 A CN 106533211A CN 201611067948 A CN201611067948 A CN 201611067948A CN 106533211 A CN106533211 A CN 106533211A
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/10—Other electric circuits therefor; Protective circuits; Remote controls
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/14—Arrangements for reducing ripples from dc input or output
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/217—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Generation Of Surge Voltage And Current (AREA)
- Arc Welding Control (AREA)
Abstract
The invention discloses a full-wave rectifier design-based micro electric welding machine circuit, which comprises an electric welding circuit and a fan circuit, wherein a transformer T1, a bridge-type rectifier stack IC2, a capacitor C3, a resistor R6, a capacitor C4, a three-terminal regulator IC1 and a DC motor M are arranged in the fan circuit; a secondary terminal of the transformer T1 is connected with an input end of the bridge-type rectifier stack IC2, an output end of the bridge-type rectifier stack IC2 is connected with the capacitor C3 in parallel; and an input circuit, a current regulation circuit, a rectifier circuit and a welding electrode circuit are arranged in the electric welding circuit. According to the micro electric welding machine circuit designed by adopting a simple circuit structure, the electric welding target can be achieved; regulated power supply and a pi-type filter design are adopted during fan circuit design for heat dissipation; reduction of the heat dissipation performance due to the fact that normal operation of the fan circuit is affected by unstable power supply is avoided; and stable, safe and reliable operation of the whole micro electric welding machine circuit can be ensured.
Description
Technical field
The present invention relates to the field such as material science and technology, welding machine technology, specifically, is that one kind is designed based on all wave rectification
Micro-welder circuit.
Background technology
Welding machine is exactly the electrical equipment of the power supply for providing certain characteristic for welding, is welded due to flexible simple and convenient solid and reliable,
Advantage after welding even with mother metal equality strength is widely used in each industrial circle, such as Aero-Space, ship, automobile, container
Deng.
Electric welding machine (electric welding machine), will actually with the transformator for declining external characteristics
220V and 380V alternating currents are changed into the unidirectional current of low pressure, and electric welding machine typically can be divided into two kinds by out-put supply species, and one kind is to hand over
Stream power supply；One kind is galvanic.The electric welding machine of direct current it may be said that and a powerful commutator, point both positive and negative polarity, hand over
During stream electricity input, Jing after transformator transformation, then by rectifier rectification, then output is with the power supply for declining external characteristics, outfan
Huge change in voltage can be produced when switching on and off, ignite electric arc in instantaneous short circuit at the two poles of the earth, using produce electric arc come
Consumable electrode and wlding, cooling reached the purpose for combining them later.The characteristics of welding transformer has itself, external characteristics is just
It is voltage drastically declines after welding rod ignites characteristic.
The critical piece of electric welding machine is a step-down transformer, and the two ends of secondary coil are welded part and welding rod, work
As when ignite electric arc, welding rod is fused in the gap of workpiece in the high temperature of electric arc.As the iron core of welding transformer has certainly
The characteristics of body, therefore the characteristic drastically declined with voltage, i.e., after welding rod ignites, voltage declines；In the short circuit of welding rod adhesion
When, voltage even more drastically declines.
In welding operation, although the electric current in circuit is equal everywhere, but as resistance everywhere is different, do not fixing
Resistance maximum (this resistance is contact resistance) of contact position, according to the heat effect law (being also Joule's law) of electric current, i.e. Q=
IR.t understands：When electric current is equal, then the bigger position heating of resistance is higher, therefore in welding, the contact of welding rod is namely
The contact resistance of the contact position of the metallic object for being connect is maximum, then the electric heating for producing at this position is naturally also just most, welds in addition
Bar is the relatively low alloy of fusing point, is easily melted naturally.Alloy electrode core after fusing is bonded on welded article body, after cooling just
Welding object is bonded in one piece.
The content of the invention
It is an object of the invention to provide a kind of micro-welder circuit designed based on all wave rectification, using simple electricity
Line structure and the micro-welder circuit that designs can realize the purpose being welded, and in the blower fan electricity for being used to be radiated to which
When road is designed, powered using voltage stabilizing, π type filter designs, it is to avoid affect fan circuit normally to run due to power supply instability, from
And cause the situation that heat dispersion declines to occur, ensure that whole micro-welder circuit stability, safe and reliable operation.
The present invention is achieved through the following technical solutions：A kind of micro-welder circuit designed based on all wave rectification, including
Electrical welding circuit and fan circuit, the electrical welding circuit connecting fan circuit are provided with transformator T1, bridge in the fan circuit
Formula rectistack IC2, electric capacity C3, resistance R6, electric capacity C4, three terminal regulator IC1 and direct current generator M, the primary of the transformator T1
End is connected with electrical welding circuit, and the secondary end of transformator T1 is connected with the input of rectifier IC2, rectifier
The outfan of IC2 is in parallel with electric capacity C3, and the first end of electric capacity C3 connects the first end of resistance R6, the second end difference of resistance R6
It is connected with the input of the first end and three terminal regulator IC1 of electric capacity C4, the outfan connection unidirectional current of three terminal regulator IC1
The first end of machine M, second end of direct current generator M earth terminal respectively with three terminal regulator IC1, second end of electric capacity C4 and electric capacity
Second end of C3 is connected and is grounded；Be provided with the electrical welding circuit input circuit, current regulating circuit, rectification circuit and
Welding electrode circuit, the input circuit are connected with rectification circuit and welding electrode circuit respectively, and the welding electrode circuit connects rectification circuit,
Rectification circuit connects current regulating circuit, and the primary side of the transformator T1 is connected with input circuit.
Further is that the present invention is better achieved, and can preferably improve the power factor of power circuit, it is to avoid occur
The wasting of resources, especially using following setting structures：The rectification circuit includes commutation diode VD1 and commutation diode VD2, institute
The negative pole of the negative pole and commutation diode VD2 of stating commutation diode VD1 connects altogether and is connected on the input of current regulating circuit,
The positive pole of the positive pole and commutation diode VD2 of commutation diode VD1 respectively with input circuit, the primary side of transformator T1 and welding electrode
Circuit is connected.
It is further to be incorporated into alternating current power supply safe in A.C. welder for the present invention is better achieved, and
And when there are short-circuit conditions, will not the circuit of other in electrical network be caused to damage, especially using following setting structures：Described
Protective tube FU and switch K is provided with input circuit, and protective tube FU is arranged on one end and the power supply of the input of rectification circuit
In the phase line being connected；The first end of switch K is connected with another phase line of power supply, and the second end for switching K is connected to rectification
On the other end of the input of circuit.
It is further for the present invention is better achieved, can the whether normal power supply operation of Real Time Observation electric welding machine, especially adopt
Use following setting structures：Indicator light circuit is additionally provided with the input circuit, the indicator light circuit includes being sequentially connected in series
Resistance R1 and light emitting diode D1, and one end of indicator light circuit is connected to the one of the input of protective tube FU and rectification circuit
Between end, the other end of indicator light circuit is connected on the other end of the input of rectification circuit.
It is further for the present invention is better achieved, can the whether normal power supply operation of Real Time Observation electric welding machine, especially adopt
Use following setting structures：The positive pole of the light emitting diode D1 is connect altogether with resistance R1, and the negative pole of light emitting diode D1 is connected to
Switch K sides.
It is further to constitute relaxor using the negative resistance charactertistic of unijunction transistor for the present invention is better achieved, it is next
As the triggers circuit of one-way SCR, and pass through one-way SCR VT, resistance R2, resistance R3, resistance R4, unijunction transistor
The current regulating circuit that UJT, potentiometer W1 and electric capacity C2 are constituted reaches the purpose for adjusting control welding electrode circuit output current, entirely
Structure has the characteristics such as design advantages of simple, low in input cost, especially using following setting structures：Electricity is adjusted in the electric current
One-way SCR VT, resistance R2, resistance R3, resistance R4, unijunction transistor UJT, potentiometer W1 and electric capacity C2, institute are provided with road
The first end that first pole of one-way SCR VT is stated with the negative pole of commutation diode VD1 and resistance R2 is connected, and the of resistance R2
Two ends are connected with the first fixing end of the first end and potentiometer W1 of resistance R3 respectively, and second end of resistance R3 is connected to unijunction
The b2 of transistor UJT extremely goes up, the b1 poles of unijunction transistor UJT g poles and the first end of resistance R4 respectively with one-way SCR VT
It is connected, second end of resistance R4 is connected and is grounded with second pole of one-way SCR VT and second end of electric capacity C2 respectively,
The first end of electric capacity C2 connects second fixing end of potentiometer W1, the adjustable end of potentiometer W1 with the e poles of unijunction transistor UJT and
It is connected with the first end of electric capacity C2.
Further is that the present invention is better achieved, especially using following setting structures：The a poles of the one-way SCR VT
It is connected with the first end of resistance R2, the k poles of one-way SCR VT are connected with second end of resistance R4.
It is further electric welding machine to be facilitated to be welded for the present invention is better achieved, especially tied using following setting
Structure：Be provided with welder transformer T2, electrode holder A in the welding electrode circuit, the primary side of the welder transformer T2 respectively with it is whole
The positive pole of stream diode VD1 is connected with the positive pole of commutation diode VD2, one end connection weldering of the secondary end of welder transformer T2
A, the other end of the secondary end of welder transformer T2 are connected with weldment B.
Further is that the present invention is better achieved, especially using following setting structures：Arrange in the welding electrode circuit
There are welder transformer T2, an electrode holder A, positive pole and the rectification respectively with commutation diode VD1 of the primary side of the welder transformer T2
The positive pole of diode VD2 is connected, one end connection electrode holder A of the secondary end of welder transformer T2, the secondary of welder transformer T2
The other end at end is connected with weldment B.
Further is that the present invention is better achieved, especially using following set-up modes：The positive pole of the direct current generator M connects
The outfan of three terminal regulator IC1, and three terminal regulator IC1 are connect using LM78 series three terminal regulators.
The present invention compared with prior art, with advantages below and beneficial effect：
The micro-welder circuit that the present invention is designed using simple circuit structure can realize the purpose being welded, and
When the fan circuit for being used to be radiated to which is designed, powered using voltage stabilizing, π type filter designs, it is to avoid due to power supply shakiness
Determine and affect fan circuit normally to run, so as to the situation for causing heat dispersion to decline occurs, ensure that whole Miniature electric welding
Machine circuit stability, safe and reliable operation.
The present invention combines input circuit, current regulating circuit, rectification circuit and welding electrode circuit, using the negative of unijunction transistor
Resistance characteristic composition relaxor, is used as the triggers circuit of one-way SCR, and passes through one-way SCR VT, resistance R2, electricity
The current regulating circuit that resistance R3, resistance R4, unijunction transistor UJT, potentiometer W1 and electric capacity C2 are constituted reaches regulation control welding electrode
The purpose of circuit output current, total have the characteristics such as design advantages of simple, low in input cost.
The present invention can adopt RC π types filter circuits to carry out ripple to the voltage after rectification output and filter, to supply wind
The DC voltage of machine safety and stability so that the operation that blower fan can be safe and reliable.
Description of the drawings
Fig. 1 is the electrical block diagram of the present invention.
Specific embodiment
The present invention is described in further detail with reference to embodiment, but embodiments of the present invention not limited to this.
Embodiment 1：
A kind of micro-welder circuit designed based on all wave rectification, the micro electric designed using simple circuit structure
Welder circuit can realize the purpose being welded, and when the fan circuit for being used to be radiated to which is designed, be supplied using voltage stabilizing
Electricity, π type filter designs, it is to avoid affect fan circuit normally to run due to power supply instability, so as to cause heat dispersion to decline
Situation occur, ensure that whole micro-welder circuit stability, safe and reliable operation, as shown in figure 1, especially using under
State setting structure：Including electrical welding circuit and fan circuit, the electrical welding circuit connecting fan circuit, set in the fan circuit
Transformator T1, rectifier IC2, electric capacity C3, resistance R6, electric capacity C4, three terminal regulator IC1 and direct current generator M are equipped with, it is described
The primary side of transformator T1 is connected with electrical welding circuit, and the secondary end of transformator T1 is connected with the input of rectifier IC2
Connect, outfan and the electric capacity C3 of rectifier IC2 are in parallel, the first end of electric capacity C3 connects the first end of resistance R6, resistance
Second end of R6 is connected with the input of the first end and three terminal regulator IC1 of electric capacity C4 respectively, and three terminal regulator IC1's is defeated
Go out the first end of end connection direct current generator M, second end of direct current generator M earth terminal respectively with three terminal regulator IC1, electric capacity C4
The second end and second end of electric capacity C3 be connected and be grounded；Input circuit, electric current are provided with the electrical welding circuit to adjust
Circuit, rectification circuit and welding electrode circuit, the input circuit are connected with rectification circuit and welding electrode circuit respectively, the welding electrode electricity
Road connects rectification circuit, and rectification circuit connection current regulating circuit, the primary side of the transformator T1 are connected with input circuit.
Embodiment 2：
The present embodiment is further optimized on the basis of above-described embodiment, further for the present invention is better achieved,
The power factor of power circuit can preferably be improved, it is to avoid the wasting of resources occur, as shown in figure 1, especially adopting following settings
Structure：The rectification circuit includes commutation diode VD1 and commutation diode VD2, the negative pole of the commutation diode VD1 with it is whole
The negative pole of stream diode VD2 connects altogether and is connected on the input of current regulating circuit, the positive pole of commutation diode VD1 and rectification
The positive pole of diode VD2 is connected with input circuit, the primary side of transformator T1 and welding electrode circuit respectively.
Embodiment 3：
The present embodiment is further optimized on the basis of any of the above-described embodiment, and further is that this is better achieved
It is bright, can be incorporated into alternating current power supply safe in A.C. welder, and when there are short-circuit conditions, will not be in electrical network
Other circuits cause to damage, as shown in figure 1, especially adopting following setting structures：Protective tube is provided with the input circuit
FU and switch K, and protective tube FU is arranged in the phase line that one end of the input of rectification circuit and power supply are connected；Switch K's
First end is connected with another phase line of power supply, on the other end of the input that the second end for switching K is connected to rectification circuit.
Embodiment 4：
The present embodiment is further optimized on the basis of any of the above-described embodiment, and further is that this is better achieved
It is bright, can the whether normal power supply operation of Real Time Observation electric welding machine, as shown in figure 1, especially adopting following setting structures：Described defeated
Enter, the indicator light circuit includes the resistance R1 being sequentially connected in series and light emitting diode D1,
And one end of indicator light circuit is connected between one end of the input of protective tube FU and rectification circuit, indicator light circuit it is another
On the other end of the input that end is connected to rectification circuit.
Embodiment 5：
The present embodiment is further optimized on the basis of any of the above-described embodiment, and further is that this is better achieved
It is bright, can the whether normal power supply operation of Real Time Observation electric welding machine, as shown in figure 1, especially adopting following setting structures：It is described luminous
The positive pole of diode D1 is connect altogether with resistance R1, and the negative pole of light emitting diode D1 is connected to switch K sides.
Embodiment 6：
The present embodiment is further optimized on the basis of any of the above-described embodiment, and further is that this is better achieved
It is bright, using the negative resistance charactertistic composition relaxor of unijunction transistor, it is used as the triggers circuit of one-way SCR, and by single
Adjust to the electric current that controllable silicon VT, resistance R2, resistance R3, resistance R4, unijunction transistor UJT, potentiometer W1 and electric capacity C2 are constituted
Circuit reaches the purpose for adjusting control welding electrode circuit output current, and total has design advantages of simple, low in input cost
Etc. characteristic, as shown in figure 1, especially adopting following setting structures：Be provided with the current regulating circuit one-way SCR VT,
Resistance R2, resistance R3, resistance R4, unijunction transistor UJT, potentiometer W1 and electric capacity C2, first pole of the one-way SCR VT
Be connected with the first end of the negative pole and resistance R2 of commutation diode VD1, second end of resistance R2 respectively with resistance R3 first
End is connected with first fixing end of potentiometer W1, and second end of resistance R3 is connected to the b2 of unijunction transistor UJT and extremely goes up, unijunction
The b1 poles of transistor UJT are connected with the g poles of one-way SCR VT and the first end of resistance R4 respectively, second end point of resistance R4
It is not connected and is grounded with second pole of one-way SCR VT and second end of electric capacity C2, the first end connection potentiometer of electric capacity C2
Second fixing end of W1, the adjustable end of potentiometer W1 are connected with the e poles of unijunction transistor UJT and with the first end of electric capacity C2.
Embodiment 7：
The present embodiment is further optimized on the basis of any of the above-described embodiment, and further is that this is better achieved
It is bright, as shown in figure 1, especially adopting following setting structures：The a poles of the one-way SCR VT are connected with the first end of resistance R2
Connect, the k poles of one-way SCR VT are connected with second end of resistance R4.
Embodiment 8：
The present embodiment is further optimized on the basis of any of the above-described embodiment, and further is that this is better achieved
It is bright, electric welding machine can be facilitated to be welded, as shown in figure 1, especially adopting following setting structures：Arrange in the welding electrode circuit
There are welder transformer T2, an electrode holder A, positive pole and the rectification respectively with commutation diode VD1 of the primary side of the welder transformer T2
The positive pole of diode VD2 is connected, one end connection electrode holder A of the secondary end of welder transformer T2, the secondary of welder transformer T2
The other end at end is connected with weldment B.
Embodiment 9：
The present embodiment is further optimized on the basis of any of the above-described embodiment, and further is that this is better achieved
It is bright, as shown in figure 1, especially adopting following setting structures：Welder transformer T2, electrode holder A, institute are provided with the welding electrode circuit
The primary side for stating welder transformer T2 is connected with the positive pole of the positive pole and commutation diode VD2 of commutation diode VD1 respectively, weldering
One end connection electrode holder A of the secondary end of machine transformator T2, the other end of the secondary end of welder transformer T2 are connected with weldment B.
When design is used, alternating current power supply is under the protection input of the input circuit being made up of protective tube FU and switch K
It is loaded in fan circuit and electrical welding circuit respectively, in fan circuit, alternating current is carried out blood pressure lowering process by transformator T1, then
Exporting from secondary end and rectification being carried out using rectifier IC2, the ripple unidirectional current after rectification will be by by electric capacity C3, resistance
The RC pi type filters constituted by R6, electric capacity C4 carry out power filter, filter ripple voltage contained by which, then by the straight of ripple-free
Stream voltage is by preferably carrying out voltage stabilizing using the three terminal regulator IC1 of LM78 series, and exports direct current of voltage regulation, then supplies straight
Stream motor M so as to operate, so as to the body for ensureing electric welding machine persistently can radiate；When arranging, preferred direct current generator M's
Positive pole is connected with the outfan of three terminal regulator IC1, and three terminal regulator IC1 is preferably using LM78 series three terminal regulators.
On electrical welding circuit, welder transformer T2 selects step-down transformer, and which is the core component of electric welding machine.Rectification circuit
(commutation diode VD1, commutation diode VD2 constitute full-wave rectifying circuit), current regulating circuit (one-way SCR VT, unijunction
Transistor UJT, resistance R2, resistance R3, resistance R4, electric capacity C2 and potentiometer W1) constitute welding current stepless regulator；Resistance
R1 and light emitting diode D1 constitutes indicator light circuit.
When in use, welding current stepless regulator is come using the negative resistance charactertistic composition relaxor of unijunction transistor
As the triggers circuit of one-way SCR VT.As the power supply of the relaxor of unijunction transistor UJT compositions takes from rectified current
The all-wave pulsating dc voltage of road output.When controllable silicon is not turned on, the electric capacity C2 Jing resistance R2 of relaxor and current potential
Device W1 charges, electric capacity C2 both end voltages VC2Exponentially rise.To the peak point voltage V of unijunction transistor UJTPWhen.Single crystals
Body pipe UJT is turned on suddenly, base resistance Rb1Strongly reduce.Electric capacity C2 is discharged to resistance R4 rapidly by PN junction, makes resistance R4 two
Terminal voltage VgThere is a positive transition.Precipitous rising edge of a pulse is formed, as electric capacity C2 discharges, VC2Exponentially decline,
Unijunction transistor UJT cut-offs when less than valley point voltage V.
At resistance R4 two ends, output is pinnacle trigger pulse.So that one-way SCR VT conductings.Welder transformer T2's
There is alternating current to flow through in armature winding (primary side), while one-way SCR VT two ends pressure drops become very little, force relaxation to be shaken
Swing device (unijunction transistor UJT) to quit work, when alternating voltage zero-crossing moment, one-way SCR is forced shut-off.Relaxor
Again it is electric, electric capacity C2 is started to charge up again, and so goes round and begins again the said process that constantly repeat.Regulator potentiometer W1 can change electricity
Hold the charging interval of C2, that is, change relaxor cycle of oscillation.After naturally also just changing each alternating voltage zero-crossing
Relaxor sends the moment of first trigger pulse.The conducting pilot angle of one-way SCR VT is correspondingly changed, makes to add
Voltage at welder transformer T2 armature windings two ends changes, and is finally reached the purpose for adjusting control secondary output current.
The above, is only presently preferred embodiments of the present invention, not does any pro forma restriction to the present invention, it is every according to
According to the present invention technical spirit above example is made any simple modification, equivalent variations, each fall within the present invention protection
Within the scope of.
Claims (10)
1. it is a kind of based on all wave rectification design micro-welder circuit, it is characterised in that：Including electrical welding circuit and fan circuit,
The electrical welding circuit connecting fan circuit, be provided with the fan circuit transformator T1, rectifier IC2, electric capacity C3,
Resistance R6, electric capacity C4, three terminal regulator IC1 and direct current generator M, the primary side of the transformator T1 are connected with electrical welding circuit,
The secondary end of transformator T1 is connected with the input of rectifier IC2, outfan and the electric capacity C3 phases of rectifier IC2
Parallel connection, the first end of electric capacity C3 connect the first end of resistance R6, second end of resistance R6 first end and three respectively with electric capacity C4
The input of end manostat IC1 is connected, and the outfan of three terminal regulator IC1 connects the first end of direct current generator M, direct current generator
Second end of M earth terminal respectively with three terminal regulator IC1, second end of electric capacity C4 and second end of electric capacity C3 are connected and connect
Ground；Input circuit, current regulating circuit, rectification circuit and welding electrode circuit, the input electricity are provided with the electrical welding circuit
Road is connected with rectification circuit and welding electrode circuit respectively, and the welding electrode circuit connects rectification circuit, and rectification circuit connection electric current is adjusted
Economize on electricity road, the primary side of the transformator T1 are connected with input circuit.
2. it is according to claim 1 it is a kind of based on all wave rectification design micro-welder circuit, it is characterised in that：It is described
Rectification circuit includes commutation diode VD1 and commutation diode VD2, the negative pole and commutation diode of the commutation diode VD1
The negative pole of VD2 connects altogether and is connected on the input of current regulating circuit, the positive pole and commutation diode of commutation diode VD1
The positive pole of VD2 is connected with input circuit, the primary side of transformator T1 and welding electrode circuit respectively.
3. it is according to claim 2 it is a kind of based on all wave rectification design micro-welder circuit, it is characterised in that：Institute
State, and protective tube FU is arranged on one end and the electricity of the input of rectification circuit
In the phase line that source is connected；Switch K first end be connected with another phase line of power supply, switch K the second end be connected to it is whole
On the other end of the input of current circuit.
4. it is according to claim 3 it is a kind of based on all wave rectification design micro-welder circuit, it is characterised in that：Institute
State, the indicator light circuit includes the resistance R1 being sequentially connected in series and light emitting diode
D1, and one end of indicator light circuit is connected between one end of the input of protective tube FU and rectification circuit, indicator light circuit
The other end is connected on the other end of the input of rectification circuit.
5. it is according to claim 4 it is a kind of based on all wave rectification design micro-welder circuit, it is characterised in that：It is described
The positive pole of light emitting diode D1 is connect altogether with resistance R1, and the negative pole of light emitting diode D1 is connected to switch K sides.
6. according to any one of claim 2-5 it is a kind of based on all wave rectification design micro-welder circuit, its feature
It is：One-way SCR VT, resistance R2, resistance R3, resistance R4, unijunction transistor are provided with the current regulating circuit
UJT, potentiometer W1 and electric capacity C2, first pole of the one-way SCR VT and the negative pole of commutation diode VD1 and resistance R2's
First end is connected, and second end of resistance R2 is connected with the first fixing end of the first end and potentiometer W1 of resistance R3 respectively,
Second end of resistance R3 is connected to the b2 of unijunction transistor UJT and extremely goes up, the b1 poles of unijunction transistor UJT respectively with one-way SCR
The g poles of VT are connected with the first end of resistance R4, second end of resistance R4 the second pole and electric capacity respectively with one-way SCR VT
Second end of C2 is connected and is grounded, and the first end of electric capacity C2 connects second fixing end of potentiometer W1, and potentiometer W1's is adjustable
Hold the e poles with unijunction transistor UJT and be connected with the first end of electric capacity C2.
7. it is according to claim 6 it is a kind of based on all wave rectification design micro-welder circuit, it is characterised in that：It is described
The a poles of one-way SCR VT are connected with the first end of resistance R2, and the k poles of one-way SCR VT are connected with second end of resistance R4
Connect.
8. it is according to claim 6 it is a kind of based on all wave rectification design micro-welder circuit, it is characterised in that：Institute
State and in welding electrode circuit, be provided with welder transformer T2, electrode holder A, the primary side of the welder transformer T2 respectively with commutation diode
The positive pole of VD1 is connected with the positive pole of commutation diode VD2, one end connection electrode holder A of the secondary end of welder transformer T2, welding machine
The other end of the secondary end of transformator T2 is connected with weldment B.
9. according to claim 2-5, a kind of micro-welder circuit designed based on all wave rectification described in 7 any one, which is special
Levy and be：Welder transformer T2, electrode holder A, the primary side difference of the welder transformer T2 are provided with the welding electrode circuit
It is connected with the positive pole of the positive pole and commutation diode VD2 of commutation diode VD1, one end of the secondary end of welder transformer T2 connects
Electrode holder A is met, the other end of the secondary end of welder transformer T2 is connected with weldment B.
10. according to claim 1-5, a kind of micro-welder circuit designed based on all wave rectification described in any one of 7-8, its
It is characterised by：The positive pole of the direct current generator M connects the outfan of three terminal regulator IC1, and three terminal regulator IC1 adopts LM78
Serial three terminal regulator.
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| CN201611067948.4A CN106533211A (en) | 2016-11-28 | 2016-11-28 | Full-wave rectifier design-based micro electric welding machine circuit |
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| CN201611067948.4A CN106533211A (en) | 2016-11-28 | 2016-11-28 | Full-wave rectifier design-based micro electric welding machine circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107608434A (en) * | 2017-08-28 | 2018-01-19 | 安徽理工大学 | Thyristor operating angle novel sensor control method |
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2016
- 2016-11-28 CN CN201611067948.4A patent/CN106533211A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107608434A (en) * | 2017-08-28 | 2018-01-19 | 安徽理工大学 | Thyristor operating angle novel sensor control method |
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