CN201913356U - Soft start program control circuit for electric welding machine - Google Patents
Soft start program control circuit for electric welding machine Download PDFInfo
- Publication number
- CN201913356U CN201913356U CN2010206627216U CN201020662721U CN201913356U CN 201913356 U CN201913356 U CN 201913356U CN 2010206627216 U CN2010206627216 U CN 2010206627216U CN 201020662721 U CN201020662721 U CN 201020662721U CN 201913356 U CN201913356 U CN 201913356U
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- circuit
- filter circuit
- power switch
- rear part
- soft start
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- Expired - Fee Related
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Abstract
The utility model discloses a soft start program control circuit for an electric welding machine, which comprises a power switch, wherein, the power switch is connected with an alternating current power supply; the rear part of the power switch is connected with a front filter circuit comprising a common mode rejection inductor and an absorption capacitor; the rear part of the front filter circuit is connected with a rectifier bridge circuit; the rear part of the rectifier bridge circuit is connected with a large electrolytic capacitor filter circuit; the rear part of the large electrolytic capacitor filter circuit is connected with a switch tube circuit; the rear part of the switch tube circuit is connected with a transformer; a cement resistor is arranged in the circuit; in addition, one end of the cement resistor is connected with the power switch, and the other end of the cement resistor is connected with the front filter circuit. The soft start program control circuit with reasonable structure can effectively avoid that a welding power source is easy to cause electrical breakdown or ignition hazard or liquid leakage is easy to occur, and can achieve good operating effect.
Description
Technical field
The utility model relates to a kind of electric welding machine soft start sequence circuit.
Background technology
Existing electric welding machine soft start sequence circuit, the source of welding current are prone to electric puncture or danger of catching fire or leak of liquid phenomenon.
Summary of the invention
It is a kind of rational in infrastructure that the purpose of this utility model is to provide, the electric welding machine soft start sequence circuit of good working effect.
Technical solution of the present utility model is:
A kind of electric welding machine soft start sequence circuit, comprise the power switch that is connected with AC power, connect the preceding filter circuit of forming by common mode inhibition inductance and absorption electric capacity behind the power switch, connect rectifier circuit behind the preceding filter circuit, connect big electrochemical capacitor filter circuit behind the rectifier circuit, connect the switching tube circuit behind the big electrochemical capacitor filter circuit, connect transformer behind the switching tube circuit, it is characterized in that: cement resistor is arranged in the circuit, filter circuit before the one termination power switch of cement resistor, another termination of cement resistor.
The utility model is rational in infrastructure, can effectively avoid the source of welding current to be prone to electric puncture or danger of catching fire or leak of liquid phenomenon, good working effect.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is the structural representation of an embodiment of the utility model.
The specific embodiment:
A kind of electric welding machine soft start sequence circuit, comprise the power switch K1 that is connected with AC power, connect behind the power switch by common mode inhibition inductance T1 and absorption capacitor C 3, the preceding filter circuit that C4 forms, meet rectifier circuit VB1 behind the preceding filter circuit, meet big electrochemical capacitor C5 behind the rectifier circuit, the filter circuit that C6 forms, meet switching tube G1 behind the big electrochemical capacitor filter circuit, G2, G3, the switching tube circuit that G4 etc. form, meet transformer T2 behind the switching tube circuit, cement resistor R2 is arranged in the circuit, filter circuit before the one termination power K switch 1 of cement resistor, another termination of cement resistor.
Absorb suction discharge resistance R1, the R3 etc. of capacitor C 1, C2, electric capacity in the circuit in addition over the ground.
Operation principle of the present utility model: circuit incoming transport power supply opening power switch, alternating current one end by cement resistor R2 after and the other end carry out filtering through the common mode inhibition inductance T1 and the measures such as capacitor C 3, C4 that absorb simultaneously, improve anti-electromagnetic interference (EMS) ability greatly, reduced electromagnetic interference (EMI) greatly.After rectifier bridge VB1 rectification, become the DC voltage of pulsation, this voltage becomes the less 310V DC voltage of ripple factor after the filtering of excessive electrochemical capacitor C5 and C6, supply with switching tube and use.C1 and C2 are for absorbing electric capacity over the ground, and R1 and R3 are the bleeder resistances of electric capacity, electric capacity two ends voltage in official hour is dropped to meet standard value.R2 is a soft start resistance, is the rush of current in order to reduce to start shooting, and control circuit gets the relay J1 adhesive of electric back.G1, G2, G3, G4 are the IGBT single tube, mainly are that high-voltage dc voltage is carried out high frequency chopping, and it is transformed into the hf and hv pulse signal, deliver to transformer T2.
The input that this circuit is used in electric welding machine meets 6.2.2 capacitor in the EN60974-1 standard foremost---and will be connected across the electric capacity short circuit on the power supply line, and can not make the source of welding current electric puncture or danger of catching fire or leak of liquid phenomenon occur.To realize that generally this standard-required is by being connected in series fuse or overflow means mutually as air switch, overcurrent protector etc. at power supply arbitrary.This circuit places the common power switch rear end with soft starting circuit as shown in the figure, if capacitor C in the circuit 3 or all electric currents of C4 short circuit are all passed through resistance R 2, R2 can blow to open circuit, this resistance is from should being moment to damaging normally, the air switch overcurrent tripping of using because of the user will just can cause its disconnection through the heating distortion, thereby resistance R 2 has been opened a way and has been guaranteed user's normal power supply in the meantime, meet this resistance of above-mentioned standard-required and must adopt cement resistor naked light can not occur like this during blowing.Capacitor C 3, C4 will adopt safety electric capacity, and electrochemical capacitor C5, C6 also will have explosionproof hole or groove, and meeting does not like this have the liquid leakage phenomenon.
Claims (1)
1. electric welding machine soft start sequence circuit, comprise the power switch that is connected with AC power, connect the preceding filter circuit of forming by common mode inhibition inductance and absorption electric capacity behind the power switch, connect rectifier circuit behind the preceding filter circuit, connect big electrochemical capacitor filter circuit behind the rectifier circuit, connect the switching tube circuit behind the big electrochemical capacitor filter circuit, connect transformer behind the switching tube circuit, it is characterized in that: cement resistor is arranged in the circuit, filter circuit before the one termination power switch of cement resistor, another termination of cement resistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206627216U CN201913356U (en) | 2010-12-16 | 2010-12-16 | Soft start program control circuit for electric welding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206627216U CN201913356U (en) | 2010-12-16 | 2010-12-16 | Soft start program control circuit for electric welding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201913356U true CN201913356U (en) | 2011-08-03 |
Family
ID=44413172
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206627216U Expired - Fee Related CN201913356U (en) | 2010-12-16 | 2010-12-16 | Soft start program control circuit for electric welding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201913356U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103692058A (en) * | 2013-12-31 | 2014-04-02 | 上海广为焊接设备有限公司 | Soft start circuit with power correction circuit inverter-type welding machine |
-
2010
- 2010-12-16 CN CN2010206627216U patent/CN201913356U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103692058A (en) * | 2013-12-31 | 2014-04-02 | 上海广为焊接设备有限公司 | Soft start circuit with power correction circuit inverter-type welding machine |
| CN103692058B (en) * | 2013-12-31 | 2016-01-20 | 上海广为焊接设备有限公司 | With the soft-start circuit of power factor correction circuit inverter type welder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110803 Termination date: 20131216 |