CN1220929A - Electric-saving circuit of electric welder - Google Patents
Electric-saving circuit of electric welder Download PDFInfo
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- CN1220929A CN1220929A CN 97126122 CN97126122A CN1220929A CN 1220929 A CN1220929 A CN 1220929A CN 97126122 CN97126122 CN 97126122 CN 97126122 A CN97126122 A CN 97126122A CN 1220929 A CN1220929 A CN 1220929A
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Abstract
An electricity-saving circuit for electric welding machine features that a controller is attached to the main circuit of electric welding machine, which is composed of transformer and welding gun. Said controller is composed of ICs (7812, LM324 and NE555), photoelectric coupler, diodes, triodes, transformer, resistors and capacitors, and can be used to realize the electric saving on idle, overcrrent protection on welding and electric consumption accounting. Its advantages are high electricity-saving effect, high reliability, small size of control box and low cost.
Description
The present invention relates to the control circuit of additional a kind of electric welding machine economize on electricity on the electric welding machine main circuit.
The integrated circuit of control economize on electricity when the electric welding machine that uses does not both at home and abroad still have zero load at present, China developed a kind of power save circuit of forming with resolution element in the past, but because the poor reliability of control electric welder no-load circuit, often cause electric welding machine outage and can't use, and power save circuit that is short-circuited when still not having the control welding and the circuit that measures the power consumption of electricity consumption.
The purpose of this invention is to provide a kind of power save circuit of saving energy when controlling electric welder no-load, the electricity-saving protection circuit when being short-circuited during welding, and the actual energy consumption economize on electricity metering circuit during the electric welding machine operate as normal.
Purpose of the present invention is implemented by following measure, with original electric welding machine B
1With welding gun BX, K switch
1For the welding main circuit, be additional to B
1The K switch of elementary winding
2, control transformer B
2, at elementary winding two ends incoming transport contactor JC and relay normally open contact J, K
2Fuse BX is inserted in the back
1, K
1After meet the normally opened contact JC of A.C. contactor, B
2Secondary windings insert fuse BX
2With rectifier D
3-D
6, it is characterized in that the output of rectifier anode meets 7812 integrated package of pressure-stabilizing IC
1Pin 1, pin 2 ground connection are at IC
1Insert electrochemical capacitor C between pin 1 and the pin 2
3, IC
1Output pin 3 is+12 volts, and and pin 2 between insert capacitor C
4And C
5, at K
2And B
1Seal in capacitor C between elementary winding
1, at electric welding machine B
1Elementary winding inserts the resistance R of voltage sampling circuit
1, diode D
1With photoelectrical coupler C
1, C
1The emitter stage and the NE555 ic chip of phototriode output
7Pin 2 joins, and through resistance R
15Ground connection.C
1Emission is through capacitor C
2Back and C
1Colelctor electrode joins and inserts LM324 integrated package 1C
3Pin 4 and IC
1Output pin 3 be+12 volts, IC
3Pin 11 ground connection.At B
1Elementary winding insert the current transformer H that current sampling circuit is used
1, H
1Output contact 201 meets diode D
2, resistance R
3, the LM324 ic chip
3Pin 3, H
1Output contact 201 is through resistance R
2Back and H
1Another output contact 202 joins and ground connection.At D
2And R
3The junction and ground between parallel resistance R
8And capacitor C
6, at IC
3Pin 3 and ground between insert Zener diode D
8, IC
3Pin 2 and pin 1 join and insert the LM324 ic chip
2Pin 6, IC
2Pin 5 through resistance R
5Ground connection, and through resistance R
4Insert C
1The pin 3 of output+12 volt, IC
2Output pin 7 is through resistance R
10, capacitor C
10Back ground connection, and through diode D
10With resistance R
10IC is inserted in back in parallel
7Pin 6, IC
7Pin 8 meet IC
1Pin 3, IC
7Pin 1 ground connection, pin 5 through resistance R
14Ground connection, pin 4 are through resistance R
11Insert IC
1Pin 3 and through capacitor C
11Ground connection, pin 3 meet relay J and diode D in parallel
11Back ground connection.
By R
1, D
1, C
1, R
15The photoelectrical coupler sample circuit of forming can be used transformer B
3, elementary winding inserts electric welding machine B
1Elementary winding two tip nodes 101,102.Transformer B
3Secondary windings output terminating diode D
14Contact 103 and NE555 ic chip are inserted in the back
7Pin 2 join, this 103 contact connects capacitor C in parallel again
8And resistance R
17B is inserted in the back
3The transformer type voltage sampling circuit of another output of secondary windings and ground connection replaces.
Insert electric welding machine B
1The current transformer H of elementary winding
1, also can insert electric welding machine B
1Secondary windings.
On the circuit base of above-mentioned Fig. 1, at electric welding machine B
1Secondary windings two tip nodes 301 places, insert resistance R again
16, diode D
13With photoelectrical coupler C
2After receive contact 302 places, G
2The colelctor electrode of phototriode insert IC
1Pin 3, C
2The phototriode emitter stage meet diode D
18, the resistance R that connects in parallel
24, capacitor C
15Back ground connection, D
18Insert IC
7Pin 4, and through capacitor C
11Ground connection, and resistance R
11The former IC that connects
1 Pin 3 ends disconnect back and C
11Parallel connection, thus the short circuit current electricity-saving protection circuit that increases formed.
Above-described short circuit current electricity-saving protection circuit can adopt the circuit of current transformer formula to substitute, and physical circuit is at electric welding machine B
1Secondary windings inserts current transformer H
3, its output low level end ground connection, high level terminating diode D
16, resistance R
21, diode D
17With triode BG
3Base stage, BC
7Colelctor electrode insert the NE555 ic chip
7Pin 4, and through resistance R
22Insert IC
1Pin 3 outputs+12 volts, H
3The high level output through resistance R
19Back ground connection, diode D
16Connect capacitor C in parallel
13, resistance R
20Back ground connection, triode BC
3Colelctor electrode connect capacitor C in parallel
14, resistance R
23After connect self emitter stage and ground connection and the short circuit current electricity-saving protection circuit formed also can substitute with the circuit of transformer type.Physical circuit is, at electric welding machine B
1Secondary windings two tip nodes 301,302 places insert transformer B
4Elementary winding two ends, B
4Secondary windings low level end ground connection, high level terminating diode D
15After capacitor C in parallel
12, resistance R
18Back ground connection, and insert the NE555 ic chip
7Pin 4, the short circuit current electricity-saving protection circuit of being formed.
On the basis of the circuit of described in front Fig. 4, increase the power consumption metering circuit, physical circuit consists of the ic chip of table LM324
4Pin 10 and IC
3Output pin 1 join IC
4Pin 9 and LM324 ic chip
2Pin 5 join IC
4Output pin 8, through parallel resistor R
6, diode D
7The NE555 ic chip is inserted in the back
6Pin 4, connect capacitor C again
7Back ground connection, IC
6Pin 6 joins with pin 2, and through capacitor C
9Ground connection, IC
6Pin 3 connecting resistance R
13, diode D
9After meet IC
6Pin 2, and with triode BG
1Colelctor electrode joins, IC
4Pin 10 meet potentiometer W
1Back ground connection, W
1Adjustable termination LM324 ic chip
5Pin 12, IC
5Pin 13 meets triode BG
1Emitter stage, and through resistance R
9, potentiometer W
2Back ground connection, W
2Adjustable end ground connection, IC
6Pin 1 ground connection, pin 5 through resistance R
7Ground connection, pin 7 insert triode BG
2Base stage, and through resistance R
12Photoelectrical coupler G is inserted in the back
2The phototriode emitter stage, BG
2Grounded emitter, BG
2Colelctor electrode meet IC after inserting electromagnetic counter M
1+ 12 volts of ends of pin 3 output, diode D
12Power consumption metering circuit in parallel with M, as to be formed.
Two NE555 ic chips
6And IC
7, can be with a NE555 ic chip
8Replace, concrete pin substitutes as follows: IC
8Pin 7 replace IC
6And IC
7Pin 1, IC
8 Pin 14 replace IC
6And IC
7Pin 8, IC
8Pin 1,2,3,4,5,6 replace IC respectively
6 Pin 7,6,5,4,3,2, IC
8Pin 8,9,10,11,12 replace IC respectively
7 Pin 2,3,4,5,6.
The present invention compared with the prior art, it is obvious to have power savings, and can measure electric welding machine welding power consumption, uses reliably, the control box volume is little, the advantage that cost is low.
Description of drawings is as follows:
Fig. 1 is the welding machine electricity-saving circuit line map;
Fig. 2 is a transformer voltage sample circuit line map;
Fig. 3 is current transformer H
1Current sampling circuit inserts electric welding machine B
1The line map of inferior utmost point winding;
Fig. 4 increases short circuit current electricity-saving protection circuit line map on Fig. 1 power save circuit;
Fig. 5 is the replacement circuit line map of short circuit current electricity-saving protection circuit among Fig. 4;
Fig. 6 is the another kind of replacement circuit line map 3 of short circuit current power save circuit among Fig. 4
Fig. 7 increases power consumption metering circuit line map on Fig. 4 power save circuit.
The present invention will be further described in conjunction with the accompanying drawings, and when needs carried out the electric welding welding, K closed a switch
1And K
2, control circuit power transformer B
2The secondary windings output through rectifier D
3-D
6Output DC after the rectification, and through 7812 integrated package of pressure-stabilizing.IC
1With filter capacitor C
3, C
4, C
5The back obtains galvanic current and presses+12 volts, from IC
1Pin 3 output; Electric welder transformer B
1The elementary winding stream that powers on pass through capacitor C
1After, the electric current of elementary winding is very little, at this moment resistance R
1, diode D
1With photoelectrical coupler C
1Light emitting diode form the loop, the photosensitive triode of the optical excitation of light emitting diode, and in resistance R
15Two ends produce pressure drop, make the NE555 ic chip
7Pin 2 is in high level; Current transformer H
1Because of B
1Primary winding current is very little, so H
1Output current is almost nil, R
2The two ends no-voltage, the diode D of voltage stabilizing
8The two ends no-voltage, ic chip
3Pin 3 be in low level, IC
3Pin 1 and IC
2Pin 6 is a low level, IC
2Pin 5 through R
4Connect+12 volts, be in high electricity, IC
2Output pin 7 is a high level, IC
7Pin 6, through R
10Meet IC
2Pin 7 is so be in high level, IC
7Pin 8 is a high level, IC
7Pin 4 is through R
11Connect+12 volts for high level, so IC
7Output pin 3 places be low level, this moment the relay J no power, contactor JC does not switch on, so B
1Circuit on the elementary winding is subjected to capacitor C
1The restriction and electric current is very little, thereby reach the electric welder no-load aim of power saving.
When needs welded, welding gun BX impacted workpiece, makes B
1The secondary windings instantaneous short circuit causes B
1The primary winding current transient current increases, current transformer H
1Output produces big electric current, resistance R
2Two ends produce pressure drop, through diode D
2Rectification and C
6, R
8Filtering, this DC voltage passes through R
3Add to ic chip
3Pin 3 and Zener diode D
8Negative terminal, D
6To guarantee IC
3Pin 3 not breakdown because of overvoltage, IC
3Pin 3 is in high level, IC
3Output pin 1 and IC
2Pin 6 is a high level, IC
2Output pin 7 is a low level, because IC
2Pin 7 and IC
7Insert diode D between the pin 6
10Clamping action, make IC
7Pin 6 is in low level, and owing to instantaneous short circuit, supply voltage almost all falls in capacitor C simultaneously
1Two ends, 101,102 liang of voltages of locating of point are zero, through R
1, D
1, G
1Both end voltage also be zero to make C
1Turn-off R rapidly
15Two ends do not have pressure drop, IC
7Pin 2 is a low level, IC
7Pin 3 be high level, relay J energising adhesive, its normally opened contact J closure, contactor JC energising, its normally opened contact JC closure, B
1Elementary winding is connected, and electric current increases, welding gun BX and workpiece gap discharge, and electric welding machine is in normal welding running status.
When welding stops, B
1The secondary windings electric current is zero, makes B
1Primary winding current reduces, current transformer H
1Output current becomes very little, resistance R
2The two ends pressure drop is close to zero, IC
3Pin 3 is in low level, IC
3Pin 2 and pin 1 are low level, IC
2Pin 6 is a low level, IC
2Pin 7 upsets are for high level and pass through resistance R
10To capacitor C
10After the charging time-delay, IC
7Pin 6 is in high level, IC
7Output pin 3 becomes low level, and relay J discharges, and its normally opened contact J resets, the contactor JC release of cutting off the power supply, and normally opened contact JC resets, B
1Elementary winding on electric current because of capacitor C
1Reason, its electric current is very little, electric welding machine is in unloaded electricity-saving state.
As welding gun BX during,, make B owing to the operation reason causes welding rod to be bonded on the workpiece in welding job
1Secondary windings is in short-circuit condition, and its electric current increases, and causes B
1The electric current of elementary winding increases, at this moment, and from B
1The voltage die at secondary windings contact 301,302 places is close to zero, at this moment photoelectrical coupler G
2In light emitting diode turn-off the emitter stage no-output of phototriode, diode D
18Cut off capacitor C
11The voltage at two ends is through R
11Make IC after the discharge time-delay
7Pin 4 is in low level, IC
7Output pin 3 upsets are low level, the relay J outage, and normally opened contact J resets, contactor JC outage, normally opened contact JC resets, B
1Elementary winding cuts off, and only depends on capacitor C
1Keep very little electric current, reach the huge short circuit current that the cutting-off of short-circuit causes, realize the short circuit current electricity-saving protection, and then eliminate short circuit, promptly welding gun BX and workpiece break away from.
When normal welding job state, B
1 Secondary windings contact 301 places are to resistance R
16Diode D
13With photoelectrical coupler G
2Light emitting diode form loops to contact 302, light emitting diode excites phototriode, makes its emitter stage output current, and in resistance R
24Produce pressure drop, contact 304 current potentials are raise, and to capacitor C
15Charging is along with capacitor C
15The voltage at two ends raises, diode D
18Conducting, and pass through resistance R
11Produce pressure drop, simultaneously to capacitor C
11Charging makes IC
7Pin 4 be in high level, keep IC
7The high level of pin 3 is in normal operating conditions.
When electric welding machine is in normal operating conditions, current transformer H
1Output produces one and is varied to the electric current of direct ratio with welding current, and in resistance R
2Two ends produce pressure drop, through diode D
2Rectification and capacitor C
6After the filtering, produce the pulsating dc voltage that is varied to direct ratio with welding current, this voltage is through resistance R
3Add to IC
3Input pin 3, IC
3Pin 3 is in high level, IC
3Pin 1 be high level IC
4Pin 10 is a high level, IC
5Pin 12 is with potentiometer W
1The adjustment of adjustable end and be in suitable operating voltage, IC
4Pin 8 is a high level, and through resistance R
6Add to IC
6Pin 4, IC
6Pin 4 is in high level, IC
5Pin 14 be high level, and add to triode BG
1Base stage, make BG
1Saturation conduction makes capacitor C
9Pass through BG
1, resistance R
9, potentiometer W
2After discharge is delayed time over the ground, IC
6Pin 2 be in low level, IC
6Pin 3 be high level, and pass through resistance R
13With diode D
9To capacitor C
9Charging makes C
7Both end voltage raises, IC
6Pin 2 become high level, IC
6Pin 3 becomes low level, C
9To pass through BC again
1, R
9, W
2Discharge over the ground, D at this moment
9Two ends are in reverse blocking state because of adding backward voltage, and the frequency of generation of going round and beginning again like this is varied to the electric pulse of direct ratio in IC with welding current
6Triode BG is exported and added to pin 7
2Base stage, BG like this
2Base stage is by resistance R
12Add to BG
2After the voltage of base stage and pulse voltage are superimposed, by BG
2Colelctor electrode outputs to electromagnetic counter M and counts, and then M is with its power consumption of welding current change records, and can reflect the consumption of welding rod, diode D
12Prevent the reverse overvoltage when the M coil disconnects, regulator potentiometer W
2, can adjust the operating frequency of M, obtain continuous data accurately.
When the electric welder no-load state, H
1The output no current, IC
4Pin 10 be low level, IC
4Pin 9 be high level, IC
4Pin 8 output low levels are again because of resistance R
6, diode D
7Be connected to IC after the parallel connection
6Pin 4, and pass through capacitor C
7Go into ground, make IC
6Pin 4 be in low level, IC
6Pin 3 output low levels, IC
6The no electric pulses output of pin 7.M does not work.
When if welding machine is in spot welding or striking state, will be at IC
4Pin 8 instantaneous high level appears, and through resistance R
6To capacitor C
7If charging is IC
4Duration of pin 8 output high level much smaller than R
6To C
7Charging interval, IC then
6Pin 4 still is in than low level, IC
6The no electric pulse of pin 7 output, M does not still work, and plays short signal excision effect.When if welding is in short-circuit condition, photoelectrical coupler G
2Turn-off, the current potential bust that makes contact 304 places is zero, then passes through resistance R
12Add to IC
6The voltage of pin 7 is zero, IC
6The no electric pulse of pin 7 outputs, triode BG
2Be in cut-off state, M does not work, thereby reaches the excision effect of short circuit huge current flow.Power consumption when making counter M only count record electric welding machine welding normal operating conditions, the welding rod that is consumed when reflecting normal the welding.
Claims (8)
1, a kind of welding machine electricity-saving circuit that is additional to the electric welder transformer main circuit and forms has electric welding machine B
1, welding gun BX, K switch
1Main circuit, be additional to B
1The K switch of elementary winding
2, control power transformer at B
2, at B
2Elementary winding two ends incoming transport contactor JC and relay normally open contact J, K
2Fuse BX is inserted in the back
1, K
1After meet contactor normally opened contact JC, B
2Secondary windings inserts fuse BX
2With rectifier D
3-D
6, it is characterized in that the positive termination integrated package of pressure-stabilizing of rectifier IC
1Pin 1, at IC
1Pin 1 and pin 2 between insert capacitor C
3And ground connection, IC
1Insert two shunt capacitance C between output pin 3 and the ground
4And C
5, at K
2And B
1Seal in capacitor C between elementary winding
1, at electric welding machine B
1Elementary winding inserts the resistance R that voltage sampling circuit is used
1, diode D
1With photoelectrical coupler G
1, G
1Output phototriode emitter stage and ic chip
7Pin 2 join, and through resistance R
15Ground connection, G
1Emitter stage is through capacitor C
2Back and G
1Colelctor electrode joins and inserts ic chip
3Pin 4 and IC
1Pin 3 join IC
3Pin 11 ground connection, at B
1Elementary winding insert the current transformer H that current sampling circuit is used
1, H
1Output terminating diode D
2, resistance R
3, ic chip
3Pin 3, H
1Output is through resistance R
2Back and H
1Another output join and ground connection, at D
2And R
3Contact and ground between parallel resistance R
3And capacitor C
6, at IC
3Pin 3 and ground between insert Zener diode D
8, IC
3Pin 2 and pin 1 join and insert ic chip
2Pin 6, IC
2Pin 5 through resistance R
5Ground connection, and through resistance R
4Insert IC
1Output pin 3, IC
2Output pin 7 is through resistance R
10, capacitor C
10Back ground connection, and through diode D
10With resistance R
10IC is inserted in back in parallel
7Pin 6, IC
7Pin 8 meet IC
1Pin 3, IC
7Pin 1 ground connection, pin 5 through resistance R
14Ground connection, pin 4 are through resistance R
11Insert IC
1Pin 3 and through capacitor C
11Ground connection, pin 3 meet relay J and diode D in parallel
11Back ground connection.
2, welding machine electricity-saving circuit according to claim 1 is characterized in that said photoelectrical coupler sample circuit can use transformer B
3Elementary winding insert contact 101 and 102, B
3Secondary windings one end through diode D
14Contact 103, this contact and capacitor C in parallel are inserted in the back
8And resistance R
17Connect back ground connection, B
3The transformer sample circuit of secondary windings other end ground connection substitutes.
3, welding machine electricity-saving circuit according to claim 1 is characterized in that said current transformer H
1Can insert electric welding machine B
1Secondary windings.
4, a kind of welding machine electricity-saving circuit that is additional to the electric welder transformer main circuit and forms has the described power save circuit of claim 1, it is characterized in that electric welding machine B
1Secondary windings contact 301 places insert resistance R
16, diode D
13With photoelectrical coupler G
2After be connected to contact 302 places, G
2The colelctor electrode of phototriode insert IC
1Pin 3, G
2The phototriode emitter stage meet diode D
18, the resistance R that connects in parallel
24, capacitor C
15Back ground connection, D
18Insert IC
7Pin 4, and through capacitor C
11Ground connection.And resistance R
11The former IC that connects
1Pin 3 ends disconnect back and C
11The short circuit current electricity-saving protection circuit is formed in parallel connection.
5, welding machine electricity-saving circuit according to claim 4 is characterized in that said short circuit current electricity-saving protection circuit, can be by R
1Secondary windings insert current transformer H
3, its output low level end ground connection, high level terminating diode D
16, resistance R
21, diode D
17With triode BG
3Base stage, BG
3Colelctor electrode insert IC
7Pin 4, and through resistance R
22Insert IC
1Pin 3, H
3The high level end through resistance R
19Back ground connection, D
16Connect capacitor C in parallel
13, resistance R
20Back ground connection, BG
3Colelctor electrode insert capacitor C in parallel
14, resistance R
23The short circuit current electricity-saving protection circuit of back sending and receiving emitter-base bandgap grading and ground connection replaces.
6, welding machine electricity-saving circuit according to claim 4 is characterized in that said short circuit current electricity-saving protection circuit, also can be by B
1Secondary windings inserts transformer B
4, B
4Secondary windings low level end ground connection, high level terminating diode D
15After capacitor C in parallel
12, resistance R
18Back ground connection, and insert IC
7The short circuit current electricity-saving protection circuit of pin 4 replace.
7, a kind of welding machine electricity-saving circuit that is additional to the electric welder transformer main circuit and forms has the described power save circuit of claim 4, it is characterized in that ic chip
4Pin 10 and IC
3Output pin 1 join IC
4Pin 9 and IC
2Pin 5 join IC
4Output pin 8 through parallel resistor R
6, diode D
7IC is inserted in the back
6Pin 4, connect capacitor C again
7Back ground connection, IC
6Pin 6 joins with its pin 2, and through capacitor C
9Ground connection, IC
6Pin 3 connecting resistance R
13, diode D
9After meet IC
6Pin 2, and with triode BC
1Colelctor electrode joins, IC
4Pin 10 meet potentiometer W
1Back ground connection, W
1Adjustable termination IC
5Pin 12, IC
5Pin 13 meets BG
1Emitter stage, and through resistance R
9, potentiometer W
2Back ground connection, W
2Adjustable end ground connection, IC
6Pin 1 ground connection, pin 5 through resistance R
7Ground connection, pin 7 insert triode BG
2Base stage, and through resistance R
12G is inserted in the back
2The phototriode emitter stage, BG
2Grounded emitter, BG
2Colelctor electrode meet IC after inserting electromagnetic counter M
1Pin 3, diode D
12In parallel with M, form the power consumption metering circuit.
8, welding machine electricity-saving circuit according to claim 7 is characterized in that said ic chip
6And IC
7, can use ic chip
8Pin 7 replace IC
6And IC
7Pin 1, IC
8Pin 14 replace IC
6And IC
7Pin 8, IC
8Pin 1,2,3,4,5,6 replace IC respectively
6Pin 7,6,5,4,3,2, IC
8Pin 8,9,10,11,12 replace IC respectively
7Pin 2,3,4,5,6.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN97126122A CN1060421C (en) | 1997-12-24 | 1997-12-24 | Electric-saving circuit of electric welder |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN97126122A CN1060421C (en) | 1997-12-24 | 1997-12-24 | Electric-saving circuit of electric welder |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1220929A true CN1220929A (en) | 1999-06-30 |
CN1060421C CN1060421C (en) | 2001-01-10 |
Family
ID=5177550
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN97126122A Expired - Fee Related CN1060421C (en) | 1997-12-24 | 1997-12-24 | Electric-saving circuit of electric welder |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN1060421C (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102350570A (en) * | 2011-09-23 | 2012-02-15 | 中国长江航运集团青山船厂 | Protection device for electric welder |
CN101323038B (en) * | 2007-06-15 | 2012-05-30 | 电友株式会社 | Engine driven welding machine |
CN104057178A (en) * | 2013-03-18 | 2014-09-24 | 成都瑞途电子有限公司 | Power-saving controller for electric welding machine |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN2234839Y (en) * | 1995-09-21 | 1996-09-11 | 劳立元 | Electricity-saving controller for electric welding machine |
-
1997
- 1997-12-24 CN CN97126122A patent/CN1060421C/en not_active Expired - Fee Related
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101323038B (en) * | 2007-06-15 | 2012-05-30 | 电友株式会社 | Engine driven welding machine |
CN102350570A (en) * | 2011-09-23 | 2012-02-15 | 中国长江航运集团青山船厂 | Protection device for electric welder |
CN102350570B (en) * | 2011-09-23 | 2014-10-22 | 中国长江航运集团青山船厂 | Protection device for electric welder |
CN104057178A (en) * | 2013-03-18 | 2014-09-24 | 成都瑞途电子有限公司 | Power-saving controller for electric welding machine |
Also Published As
Publication number | Publication date |
---|---|
CN1060421C (en) | 2001-01-10 |
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