CN208316561U - The decision circuit of the power supply number of phases of direct-current inverter welding machine - Google Patents
The decision circuit of the power supply number of phases of direct-current inverter welding machine Download PDFInfo
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- CN208316561U CN208316561U CN201721590654.XU CN201721590654U CN208316561U CN 208316561 U CN208316561 U CN 208316561U CN 201721590654 U CN201721590654 U CN 201721590654U CN 208316561 U CN208316561 U CN 208316561U
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Abstract
The utility model discloses a kind of decision circuits of the power supply number of phases of direct-current inverter welding machine, including breaker output end, exchange photoelectrical coupler, transistor switching circuit and the given potentiometer of control；The input terminal of the breaker connects the AC power source；The output end of the breaker connects the input terminal of the exchange photoelectrical coupler, the AC power source is inputted to the exchange photoelectrical coupler, so that the exchange photoelectrical coupler is connected in three-phase alternating current；The control terminal of output end the connection power supply and the transistor switching circuit of the exchange photoelectrical coupler, with the control terminal output control signal of the transistor switching circuit described in the exchange photoelectrical coupler conducting；The output end of the transistor switching circuit connects described control and gives potentiometer；And the given potentiometer of control outputs a control signal to control circuit, to adjust the operating current of the direct-current inverter welding machine according to the number of phases of the AC power source.The circuit structure is simple, suitable for the mode of multiple power sources input, improves the versatility of direct-current inverter welding machine.
Description
Technical field
The utility model relates to direct-current inverter welding machine control circuits, and in particular to the power supply number of phases of direct-current inverter welding machine
Decision circuit.
Background technique
Most of twin voltage frequency contravariant D. C. welding machine that user uses at present is electric or single-phase using two-phase mostly
The mode of electricity power supply works, and with the dual test of technology and practice, direct-current inverter welding machine technology is wanted according to market
Continuous upgrading is asked, for direct-current inverter welding machine when accessing two-phase electricity, common problem is that the output power of two-phase electricity does not have
The output power of single-phase electricity is high, efficiency also than single-phase electricity when it is low, to be not suitable for the place of commercial power.With pushing away for time
It moves, requirement of the market to welding machine be also higher and higher, and especially totipotency, the voltage scope of application become pursues currently on the market
Mainstream technology.As the demand to the electric welding machine of three phase mains is suitable for is more and more, therefore it is badly in need of that three-phase electricity can be suitable for
The control circuit of the direct-current inverter welding machine in source, two-phase power supply and single phase poaer supply.
Utility model content
The purpose of this utility model is to provide a kind of decision circuit of the power supply number of phases of direct-current inverter welding machine, the circuits
Structure is simple, is applicable to the mode of multiple power sources input.
In order to solve the above technical problems, the decision circuit of the power supply number of phases of the direct-current inverter welding machine of the utility model, packet
It includes breaker output end, exchange photoelectrical coupler, transistor switching circuit and controls given potentiometer；The input of the breaker
End connects the AC power source；The output end of the breaker connects the input terminal of the exchange photoelectrical coupler, to the friendship
Streamer electric coupler inputs the AC power source, so that the exchange photoelectrical coupler is connected in three-phase alternating current；It is described
The control terminal for exchanging output end the connection power supply and the transistor switching circuit of photoelectrical coupler, in the exchange photoelectricity coupling
Control signal is exported to the control terminal of the transistor switching circuit when clutch is connected；The output end of the transistor switching circuit
It connects described control and gives potentiometer；And the given potentiometer of control outputs a control signal to control circuit, according to institute
The number of phases for stating AC power source adjusts the operating current of the direct-current inverter welding machine.
Preferably, the output end of the breaker is connected by first resistor R1 with the photoelectrical coupler that exchanges.
Preferably, which further includes charge-discharge circuit, the charge-discharge circuit connect the exchange photoelectrical coupler with
The common end of the transistor switching circuit provides driving electricity for the control terminal in charging for the transistor switching circuit
Pressure.
Preferably, the charge-discharge circuit includes the charging capacitor and second resistance R2 of parallel connection, charging capacitor and the second electricity
One end of resistance R2 connects the control terminal of the transistor switching circuit, other end ground connection.
Preferably, the exchange photoelectrical coupler connects institute by 3rd resistor R3 with the common end of the charge-discharge circuit
State the control terminal of transistor switching circuit.
Preferably, the transistor switching circuit includes field-effect tube, and the grid G of the field-effect tube passes through 3rd resistor
R3 connects the charge-discharge circuit and the common end for exchanging photoelectrical coupler, and the drain D of the field-effect tube passes through the 4th
Resistance R4 connection power supply, the source S ground connection of the field-effect tube, the pole D of the field-effect tube passes through the first zener diode D1
It connects described control and gives potentiometer, wherein the drain D of the field-effect tube connects the negative of the first zener diode D1
Pole.
The decision circuit of the power supply number of phases of the direct-current inverter welding machine of the utility model, utilizes input end of electric welding machine breaker
Output voltage phase come to exchange photoelectrical coupler provide signal so that it is worked, when breaker output end output be
When three-phase electricity, photoelectrical coupler ON operation is exchanged, voltage signal is passed to triode switch electricity by charge-discharge circuit by VCC
Road, driving triode switching circuit work, triode ON in transistor switching circuit, as transistor switching circuit
The drain potential of output end is pulled low, and exports low level control signal, low level control signal to control given potentiometer without
Voltage signal input is without work, so that control circuit of electric welding machine adjusts electricity according to the output signal that the control gives potentiometer
The operating current of welding machine；Conversely, not making then to exchange photoelectrical coupler when the output of breaker output end is two-phase electricity or single-phase electricity
Work, then can not driving triode switching circuit work, the output end of transistor switching circuit exports high level, by steady
It presses diode to carry out signal input to given potentiometer is controlled, makes to control given potentiometer work, output signals to control circuit,
Further control the operating current of electric welding machine.The decision circuit of the power supply number of phases of the direct-current inverter welding machine of the utility model, root
According to the operating current of the corresponding output control Signal Regulation electric welding machine of the power supply number of phases, so that the either three-phase of electric welding machine access
Electricity, two-phase electricity or when single-phase electricity, can be welded it is eupraxic work, not will lead to the output work of electric welding machine
Rate reduces and reduces efficiency, makes electric welding machine not only and can be adapted for civilian electricity, is also equally applicable to commercial power, improves equipment
Versatility and service efficiency.
Detailed description of the invention
Fig. 1 is the circuit diagram of the decision circuit of the AC power source number of phases of the direct-current inverter welding machine of the utility model.
Appended drawing reference
10 charge-discharge circuits, 20 transistor switching circuits.
Specific embodiment
The decision circuit of the AC power source number of phases of the direct-current inverter welding machine of the utility model is carried out with reference to the accompanying drawing
It is described in detail, the embodiments described below with reference to the accompanying drawings are exemplary, it is only used for explaining this practical information, and cannot solve
It is interpreted as limitations of the present invention.
Fig. 1 is the circuit diagram of the decision circuit of the AC power source number of phases of the direct-current inverter welding machine of the utility model.
As shown in Figure 1, the decision circuit of the AC power source number of phases of the direct-current inverter welding machine of the utility model, including breaker output
End, exchange photoelectrical coupler OC1, transistor switching circuit 20 and the given potentiometer of control；The input terminal of the breaker connects
The AC power source；The output end of the breaker connects the input terminal of the exchange photoelectrical coupler, to the exchange photoelectricity
Coupler inputs the AC power source, so that the exchange photoelectrical coupler is connected in three-phase alternating current；The exchange light
The control terminal of output end the connection power supply and the transistor switching circuit 20 of electric coupler OC1, in the exchange photoelectricity coupling
The control terminal output control signal of clutch OC1 transistor switching circuit 20 when being connected；The transistor switching circuit 20
Output end connects described control and gives potentiometer；And the given potentiometer of control outputs a control signal to control circuit,
To adjust the operating current of the direct-current inverter welding machine according to the number of phases of the AC power source.
In above scheme, the output end of the breaker exchanges photoelectrical coupler OC1 phase with described by first resistor R1
Even.
In above scheme, which further includes charge-discharge circuit 10, and the charge-discharge circuit 10 connects the exchange photoelectricity
The common end of coupler OC1 and the transistor switching circuit 20, for being the transistor switching circuit 20 in charging
Control terminal provides driving voltage.
In above scheme, the charge-discharge circuit 10 includes in parallel charging capacitor and second resistance R2, charging capacitor and
One end of second resistance R2 connects the control terminal of the transistor switching circuit, other end ground connection.
In above scheme, the common end of the exchange photoelectrical coupler OC1 and the charge-discharge circuit 10 passes through third electricity
Resistance R3 connects the control terminal of the transistor switching circuit 20.
In above scheme, the transistor switching circuit 20 includes field-effect tube/metal-oxide-semiconductor, and the grid G of the metal-oxide-semiconductor is logical
It crosses 3rd resistor R3 and connects the charge-discharge circuit 10 and the common end for exchanging photoelectrical coupler OC1, the leakage of the metal-oxide-semiconductor
Pole D is grounded by the 4th resistance R4 connection power supply, the source S of the metal-oxide-semiconductor, and the pole D of the metal-oxide-semiconductor passes through two pole of the first pressure stabilizing
Pipe D1 connection is described to control given potentiometer, wherein the pole D of the metal-oxide-semiconductor connects the cathode of the first zener diode D1.
A kind of decision circuit of the power supply number of phases of the direct-current inverter welding machine of embodiment of the utility model, including breaker
Output end, charge-discharge circuit 10, transistor switching circuit 20, controls given potentiometer at exchange photoelectrical coupler OC1.Breaker
One end of output end photoelectrical coupler OC1, two adjacent terminations of the output end of breaker are exchanged with first resistor R1 series connection
Photoelectrical coupler OC1, exchange photoelectrical coupler OC1 connect power supply and charge-discharge circuit charging capacitor CE1 and second resistance R2 and
The grid G end of another termination metal-oxide-semiconductor of 3rd resistor R3,3rd resistor R3, the drain D of metal-oxide-semiconductor terminate the 4th resistance R4 and the
One zener diode D1, and power supply VCC is connect by the 4th resistance R4, the source S of metal-oxide-semiconductor is grounded GND, and the 4th resistance R4's is another
Termination power.
The decision circuit of the power supply number of phases of direct-current inverter welding machine is produced using the power phase of the output end of welding machine breaker
Raw signal works to control exchange photoelectrical coupler, so that its is driven metal-oxide-semiconductor work, has structure simple, control mode is easy
The characteristics of.
When breaker connects three phase mains, photoelectrical coupler OC1 ON operation is exchanged, voltage signal is generated and drives metal-oxide-semiconductor
It works, metal-oxide-semiconductor drain D current potential is dragged down, so that metal-oxide-semiconductor collector D electrode potential is not enough to through the first zener diode
D1 provides voltage signal to given potentiometer is controlled.
When breaker connects power supply or single phase poaer supply, exchange photoelectrical coupler OC1 does not work, and the grid G pole of metal-oxide-semiconductor is without electricity
Signal is pressed, the current potential of metal-oxide-semiconductor cut-off, the drain D of metal-oxide-semiconductor can be mentioned by the first zener diode D1 to given potentiometer is controlled
Voltage supplied signal makes to control given potentiometer work, outputs a control signal to the control circuit of electric welding machine, adjust the work of electric welding machine
Make electric current.
The decision circuit of the power supply number of phases of the direct-current inverter welding machine of the utility model, it is corresponding defeated according to the power supply number of phases
The operating current of Signal Regulation electric welding machine is controlled out, so that the either three-phase electricity of electric welding machine access, two-phase electricity or single-phase electricity
When, can be welded it is eupraxic work, the output power that not will lead to electric welding machine reduces and reduces efficiency, makes
Electric welding machine not only can be adapted for civilian electricity, also be equally applicable to commercial power, improve the applicability and versatility of electric welding machine.
Certainly, the above description is not intended to limit the present invention, and the utility model is also not limited to the example above,
The variations, modifications, additions or substitutions that those skilled in the art are made in the essential scope of the utility model, are also answered
Belong to the protection scope of the utility model.
Claims (6)
1. a kind of decision circuit of the power supply number of phases of direct-current inverter welding machine, which is characterized in that including breaker output end, exchange
Photoelectrical coupler, transistor switching circuit and the given potentiometer of control；
The input terminal of the breaker connects the AC power source；
The output end of the breaker connects the input terminal of the exchange photoelectrical coupler, inputs to the exchange photoelectrical coupler
The AC power source, so that the exchange photoelectrical coupler is connected in three-phase alternating current；
The control terminal of output end the connection power supply and the transistor switching circuit of the exchange photoelectrical coupler, in the friendship
Control signal is exported to the control terminal of the transistor switching circuit when streamer electric coupler is connected；
The output end connection of the transistor switching circuit is described to control given potentiometer；And
The given potentiometer of control outputs a control signal to control circuit, according to the adjusting of the number of phases of the AC power source
The operating current of direct-current inverter welding machine.
2. circuit according to claim 1, which is characterized in that the output end of the breaker passes through first resistor R1 and institute
Exchange photoelectrical coupler is stated to be connected.
3. circuit according to claim 1, which is characterized in that the circuit further includes charge-discharge circuit, the charge and discharge electricity
Road connects the common end of the exchange photoelectrical coupler and the transistor switching circuit, for being the triode in charging
The control terminal of switching circuit provides driving voltage.
4. circuit according to claim 3, which is characterized in that the charge-discharge circuit includes in parallel charging capacitor and the
Two resistance R2, charging capacitor connect the control terminal of the transistor switching circuit, other end ground connection with one end of second resistance R2.
5. circuit according to claim 4, which is characterized in that the exchange photoelectrical coupler and the charge-discharge circuit
Common end connects the control terminal of the transistor switching circuit by 3rd resistor R3.
6. circuit according to claim 5, which is characterized in that the transistor switching circuit includes field-effect tube, described
The grid G of field-effect tube connects the charge-discharge circuit and the common end for exchanging photoelectrical coupler by 3rd resistor R3,
The drain D of the field-effect tube is grounded by the 4th resistance R4 connection power supply, the source S of the field-effect tube, the field-effect
The pole D of pipe controls given potentiometer by the way that the first zener diode D1 connection is described, wherein the drain D of the field-effect tube connects
Connect the cathode of the first zener diode D1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721590654.XU CN208316561U (en) | 2017-11-24 | 2017-11-24 | The decision circuit of the power supply number of phases of direct-current inverter welding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721590654.XU CN208316561U (en) | 2017-11-24 | 2017-11-24 | The decision circuit of the power supply number of phases of direct-current inverter welding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208316561U true CN208316561U (en) | 2019-01-01 |
Family
ID=64731014
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721590654.XU Active CN208316561U (en) | 2017-11-24 | 2017-11-24 | The decision circuit of the power supply number of phases of direct-current inverter welding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208316561U (en) |
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2017
- 2017-11-24 CN CN201721590654.XU patent/CN208316561U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20200930 Address after: No.202 Longshoushan Road, Huangdao District, Qingdao City, Shandong Province Patentee after: QINGDAO AITEER POWER TECHNOLOGY Co.,Ltd. Address before: 266000 Road 2, Hongshi cliff Industrial Park, Huangdao, Qingdao, Shandong. Patentee before: QINGDAO AITEL MECHANICAL AND ELECTRONIC TECHNOLOGY Ltd. |