CN206898548U - A kind of welder circuit of low-power consumption protection against electric shock - Google Patents
A kind of welder circuit of low-power consumption protection against electric shock Download PDFInfo
- Publication number
- CN206898548U CN206898548U CN201720609228.XU CN201720609228U CN206898548U CN 206898548 U CN206898548 U CN 206898548U CN 201720609228 U CN201720609228 U CN 201720609228U CN 206898548 U CN206898548 U CN 206898548U
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- Prior art keywords
- amplifier
- welding machine
- port
- electric shock
- output end
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Abstract
The utility model discloses a kind of welder circuit of low-power consumption protection against electric shock, including power supply, first amplifier, second amplifier, welding machine feedback of status port, welding terminal mouth and welding machine status indicator lamp, the welding machine feedback of status port includes welding machine voltage data feedback port and current divider feedback port, normal phase input end of the power supply respectively with the welding machine voltage data feedback port and the first amplifier is connected, two input ports of second amplifier connect the current divider feedback port respectively, the output end of second amplifier is connected with the normal phase input end and output end of first amplifier respectively, one end of the welding machine status indicator lamp is connected between the output end of second amplifier and the first amplifier, the other end is grounded.The utility model can obviously reduce the switching loss of output loss and main circuit, eliminate the danger of staff's electric shock；The starting the arc of the utility model butt welding machine does not form influence, and practicality is good.
Description
Technical field
A kind of welder circuit is the utility model is related to, is to be related to a kind of welder circuit of low-power consumption protection against electric shock specifically.
Background technology
With requirement more and more higher of the country to energy consumption, energy-saving and emission-reduction, safety in production turn into key link, at present, welding machine
As important soldering appliance, by the way that electric energy moment is converted into heat energy, simple to operate, easy to use and speed of welding is very fast,
But existing welding machine has power consumption has certain danger greatly, during use, Interruption period between The following article especially is being welded in welding machine,
Because the break period is shorter, therefore staff does not turn off welding machine voltage typically, and this just causes certain electric shock to staff
Danger, therefore, electricity how is effectively saved, while the electric shock risk for eliminating staff during welding machine interrupts is instantly urgently
The subject matter that need to be solved.
Utility model content
The utility model is in order to solve the above problems, it is proposed that a kind of welder circuit of low-power consumption protection against electric shock, this practicality are new
Type can realize that controllable be welded on is closed without exporting the PWM of welding machine during welding job, reduce output loss, weld simultaneously
The output voltage of machine is down to safe voltage, reduces the switching loss of main circuit, while also eliminates the danger of staff's electric shock
Danger；The starting the arc of the utility model butt welding machine does not form influence, has preferable practicality.
To achieve these goals, the utility model adopts the following technical scheme that：
A kind of welder circuit of low-power consumption protection against electric shock, including power supply, the first amplifier, the second amplifier, welding machine feedback of status end
Mouth, welding terminal mouth and welding machine status indicator lamp, the welding machine feedback of status port include welding machine voltage data feedback port
With current divider feedback port, the power supply respectively with the welding machine voltage data feedback port and the normal phase input end of the first amplifier
Connection, two input ports of second amplifier connect the current divider feedback port, the output of second amplifier respectively
End is connected with the normal phase input end and output end of first amplifier respectively, and one end of the welding machine status indicator lamp is connected to institute
Between the output end for stating the second amplifier and the first amplifier, other end ground connection.
Further, the welding machine feedback of status end includes the 1st, 2,3, No. 4 four connection jaws, and the 1st, No. 2 port is weldering
Machine current divider feedback port, the 3rd, No. 4 port is welding machine voltage output feedback port, wherein No. 4 port is connected with power supply, the
No. 3 port ground connection, the 2nd, No. 1 port is connected with the normal phase input end and inverting input of second amplifier respectively.
Further, the welding machine status indicator lamp and the first amplifier output end, the line of the second amplifier output end
On be serially connected with divider resistance.
Further, the normal phase input end of first amplifier and the second amplifier is connected to electrochemical capacitor and filtered electrical
Hold.
Further, the output end of first amplifier and the second amplifier is connected with the second filter circuit.
Further, between the normal phase input end of the output end of second amplifier and first amplifier and described second
Diode is respectively connected between the output end of the output end of amplifier and first amplifier.
Further, first amplifier and the second amplifier are LM324 series operational amplifiers.
Further, the power supply is connected with pull-up resistor and the first filter circuit.
Compared with prior art, the beneficial effects of the utility model are：
(1) the utility model can realize that controllable be welded on is closed without exporting the PWM of welding machine during welding job, subtract
Lack output loss, while the output voltage of welding machine is down to safe voltage, reduces the switching loss of main circuit, while also eliminate
The danger that staff gets an electric shock；
(2) starting the arc of the utility model butt welding machine does not form influence, has preferable practicality.
Brief description of the drawings
The Figure of description for forming the part of the application is used for providing further understanding of the present application, and the application's shows
Meaning property embodiment and its illustrate be used for explain the application, do not form the restriction to the application.
Fig. 1 is circuit connecting relation figure of the present utility model；
Wherein：I- power supplys, the amplifiers of II- first, the amplifiers of III- second, IV- welding machine feedback of status port, V- welding terminals
Mouthful, VI- welded condition indicator lamps, the filter circuits of VIII- first, the filter circuits of IX- second.
Embodiment：
The utility model is described in further detail with embodiment below in conjunction with the accompanying drawings.
It is noted that described further below is all exemplary, it is intended to provides further instruction to the application.It is unless another
Indicate, all technologies used herein and scientific terminology are with usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in this manual using term "comprising" and/or " bag
Include " when, it indicates existing characteristics, step, operation, device, component and/or combinations thereof.
Following embodiments are a kind of typical embodiment of the application, as shown in figure 1, a kind of weldering of low-power consumption protection against electric shock
Electromechanical road, including power supply I, the first amplifier II, the second amplifier III, welding machine feedback of status port IV, welding terminal mouth V and weldering
Machine status indicator lamp, the welding machine feedback of status port IV include welding machine voltage data feedback port and current divider feedback port,
Normal phase input ends of the power supply I respectively with the welding machine voltage data feedback port and the first amplifier II is connected, and described second
Amplifier III two input ports connect the current divider feedback port respectively, the output end of the second amplifier III respectively with
The normal phase input end of the first amplifier II connects with output end, and one end of the welding machine status indicator lamp VI is connected to described
Between two amplifiers and the first amplifier II output end, other end ground connection.
The welding machine feedback of status end includes the 1st, 2,3, No. 4 four connection jaws, and the 1st, No. 2 port is that welding machine current divider is anti-
Port is presented, the 3rd, No. 4 port is welding machine voltage output feedback port, wherein No. 4 port is connected with power supply I, No. 3 port connects
Ground, the 2nd, No. 1 port are connected with the normal phase input end and inverting input of the second amplifier III respectively.
The welding machine status indicator lamp and the first amplifier II output ends, the second amplifier III output ends line on
It is serially connected with divider resistance.
The first amplifier II and the second amplifier III normal phase input end are connected to electrochemical capacitor E3And filter capacitor
C13。
The first amplifier II and the second amplifier III output end are connected with the second filter circuit IX.
Between the output end of the second amplifier III and the normal phase input end of first amplifier and second amplifier
Diode is respectively connected between III output end and the output end of the first amplifier II.
The first amplifier II and the second amplifier III is LM324 series operational amplifiers.
The power supply I is connected with pull-up resistor and the first filter circuit VIII.
Operation principle of the present utility model is：
When welding machine normal work, the output end of the first amplifier is high level, it is allowed to which welding machine normally welds output；
When welding machine electric power is opened but is not welded, welding output port electric current is 0, and current divider feedback is also 0, the second amplifier
Output end output be low level, while the voltage of the anti-phase discrepancy section of the first amplifier is down to 1.89V, and the first amplifier positive inputs
Electrochemical capacitor at end is discharged, and therefore, the normal phase input end of the first amplifier is also low level, and the PWM outputs of welding machine are closed,
Welding machine output is reduced to 14V safe voltages by auxiliary electricity voltage after pull-up resistor partial pressure in machine, effectively avoids staff and touches
Electricity, and reduce the output loss of welding machine and the switching loss of main circuit；
When needing welding, because welding rod and workpiece short circuit can be made to be output to very low voltage by welding operative employee, this
When the first amplifier the voltage of inverting input be down to below 0.5V through partial pressure, and the voltage of the normal phase input end of the first amplifier
(i.e. electric capacity E3 voltage) is minimum also in more than 1.4V, and by comparing the first amplifier output port output HIGH voltage, PWM allows defeated
Go out, you can normal weld works.
The preferred embodiment of the application is the foregoing is only, is not limited to the application, for the skill of this area
For art personnel, the application can have various modifications and variations.It is all within spirit herein and principle, made any repair
Change, equivalent substitution, improvement etc., should be included within the protection domain of the application.
It is not new to this practicality although above-mentioned specific embodiment of the present utility model is described with reference to accompanying drawing
The limitation of type protection domain, one of ordinary skill in the art should be understood that on the basis of the technical solution of the utility model, ability
Field technique personnel need not pay the various modifications that creative work can make or deformation still in protection model of the present utility model
Within enclosing.
Claims (8)
- A kind of 1. welder circuit of low-power consumption protection against electric shock, it is characterised in that：Including power supply, the first amplifier, the second amplifier, welding machine shape State feedback port, welding terminal mouth and welding machine status indicator lamp, the welding machine feedback of status port include welding machine voltage data Feedback port and current divider feedback port, the power supply respectively with the welding machine voltage data feedback port and the first amplifier just Phase input connects, and two input ports of second amplifier connect the current divider feedback port, second fortune respectively The output end put is connected with the normal phase input end and output end of first amplifier respectively, one end of the welding machine status indicator lamp It is connected between the output end of second amplifier and the first amplifier, other end ground connection.
- A kind of 2. welder circuit of low-power consumption protection against electric shock according to claim 1, it is characterised in that：The welding machine state is anti- Feedback end includes the 1st, 2,3, No. 4 four connection jaws, and the 1st, No. 2 port is welding machine current divider feedback port, and the 3rd, No. 4 port is weldering Machine voltage output feedback port, wherein No. 4 port is connected with power supply, No. 3 port ground connection, the 2nd, No. 1 port respectively with institute The normal phase input end for stating the second amplifier connects with inverting input.
- A kind of 3. welder circuit of low-power consumption protection against electric shock according to claim 1, it is characterised in that：The welding machine state refers to Show and be serially connected with divider resistance on the line of lamp and the first amplifier output end, the second amplifier output end.
- A kind of 4. welder circuit of low-power consumption protection against electric shock according to claim 1, it is characterised in that：First amplifier and The normal phase input end of second amplifier is connected to electrochemical capacitor and filter capacitor.
- A kind of 5. welder circuit of low-power consumption protection against electric shock according to claim 1, it is characterised in that：First amplifier and The output end of second amplifier is connected with the second filter circuit.
- A kind of 6. welder circuit of low-power consumption protection against electric shock according to claim 1, it is characterised in that：Second amplifier Between the normal phase input end of output end and first amplifier and the output end of second amplifier and first amplifier it is defeated Go out between holding and be respectively connected with diode.
- A kind of 7. welder circuit of low-power consumption protection against electric shock according to claim 1, it is characterised in that：First amplifier and Second amplifier is LM324 series operational amplifiers.
- A kind of 8. welder circuit of low-power consumption protection against electric shock according to claim 1, it is characterised in that：The power supply is connected with Pull-up resistor and the first filter circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720609228.XU CN206898548U (en) | 2017-05-27 | 2017-05-27 | A kind of welder circuit of low-power consumption protection against electric shock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720609228.XU CN206898548U (en) | 2017-05-27 | 2017-05-27 | A kind of welder circuit of low-power consumption protection against electric shock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206898548U true CN206898548U (en) | 2018-01-19 |
Family
ID=61286438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720609228.XU Expired - Fee Related CN206898548U (en) | 2017-05-27 | 2017-05-27 | A kind of welder circuit of low-power consumption protection against electric shock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206898548U (en) |
-
2017
- 2017-05-27 CN CN201720609228.XU patent/CN206898548U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180119 |