CN207560426U - A kind of novel high-frequency arc ignition control circuit - Google Patents
A kind of novel high-frequency arc ignition control circuit Download PDFInfo
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- CN207560426U CN207560426U CN201721630805.XU CN201721630805U CN207560426U CN 207560426 U CN207560426 U CN 207560426U CN 201721630805 U CN201721630805 U CN 201721630805U CN 207560426 U CN207560426 U CN 207560426U
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Abstract
The utility model discloses a kind of novel high-frequency arc ignition control circuits.The high-frequency arc strike control circuit includes sequentially connected transistor switching circuit, rectification circuit, high frequency transformer, high voltage package and electric discharge block；Wherein, the primary side connection high-frequency ac power of the high frequency transformer, primary side of the secondary through the high voltage package of the high frequency transformer connect the input terminal of the rectification circuit；The transistor switching circuit is turned on or off under the action of signal is controlled, to control being turned on or off for the rectification circuit；The rectification circuit is used to the high-frequency ac power being converted into DC power supply；And the high voltage package, for boosting to the DC power supply, the secondary of the high voltage package connects the electric discharge block；The electric discharge block generates electric arc under the action of the DC power supply after being boosted.The high-frequency arc strike control circuit of the utility model has the advantages of simple in structure, control mode is flexibly, convenient and reliability is high.
Description
Technical field
The utility model is related to a kind of control circuits, and in particular to a kind of novel high-frequency arc ignition control circuit can be applied to
The equipment such as inverter type plasma cutting machine and contravariant argon arc welding machine.
Background technology
The most of inverter type plasma cutting machine or contravariant argon arc welding machine that user uses at present, are that high frequency is non-contact
Striking mode.But in high-frequency arc strike control aspect, the i.e. control aspect in high voltage package primary side, majority is using by relay
Control high voltage package primary side turns on and off, since contravariant plasma apparatus or contravariant argon arc soldering equipment were actually using
Cheng Zhong, it may appear that frequently switch closed action, so promote relay can a large amount of frequent turn-on and turn-off, greatly shorten after
The service life of electric appliance reduces the reliability of machine.
It is external at present to also have a kind of inversion striking control mode, i.e., it is controlled using no-spark high-frequency arc strike, does not need to high pressure
Spark discharger/electric discharge block of packet secondary, according to the state of arc welding gun switch, to adjust the primary side PWM wave of H.V. step up transformer
Shape, although this mode, without the limitation of relay service life, this technology application cost is higher, and circuit structure is also relatively more multiple
Miscellaneous, there are no be used widely on current inversion welding equipment.
Utility model content
The purpose of this utility model is to provide a kind of novel high-frequency arc ignition control circuit, which not only avoids control
The service life problem of relay, and it is simple in structure, and control mode is simple, flexible and convenient, and use cost is low.
To achieve these goals, a kind of novel high-frequency arc ignition control circuit provided by the utility model, including connecting successively
Transistor switching circuit, rectification circuit, high frequency transformer, high voltage package and the electric discharge block connect；Wherein, the original of the high frequency transformer
Side connects high-frequency ac power, and primary side of the secondary through the high voltage package of the high frequency transformer connects the defeated of the rectification circuit
Enter end；The transistor switching circuit is closed or disconnects under the action of signal is controlled, to control the conducting of the rectification circuit
Or it disconnects；The rectification circuit is used to the high-frequency ac power being converted into DC power supply；And the high voltage package is used for
It boosts to the DC power supply, the secondary of the high voltage package connects the electric discharge block；The electric discharge block is after being boosted
The DC power supply under the action of generate electric arc.
Preferably, the transistor switching circuit includes metal-oxide-semiconductor, first resistor R1 and second resistance R2, first electricity
R1 and second resistance R2 series connection is hindered, the grid of the MOS is connected to the common end of the first resistor R1 and second resistance R2, institute
State the first resistor R1 connections control signal, the second resistance R2 ground connection.
Preferably, the rectification circuit is the full wave diode rectifier circuit of full-bridge rectification topological structure, the metal-oxide-semiconductor
Drain electrode is connected with the cathode of the diode of the full wave diode rectifier circuit, the source electrode of the metal-oxide-semiconductor and two pole of all-wave
The anode of the diode of tube rectifying circuit is connected.
Preferably, the calibrated capacitance C1 of the primary side of high frequency transformer connects the input of the rectification circuit 20 with resistance R4
End.
Preferably, the secondary shunt capacitance C2 of the high voltage package.
Preferably, the both ends parallel resistance R3 of the corrective capacity C1.
The beneficial effects of the utility model：
The high-frequency arc strike control circuit of the utility model is the high-frequency ac power using major loop, passes through high frequency transformer
Primary side power supply of the electricity as high voltage package is taken, is controlled using the switch of transistor switching circuit, controls high voltage package primary side and power supply
Switch on and off, boosted by high voltage package secondary, achieve the effect that striking, have it is simple in structure, control mode is flexible
The characteristics of facilitating；The triodes such as high voltage package primary-side-control metal-oxide-semiconductor replace the relay of Traditional control, and triode can open pass
Disconnected number is high, avoids the short limitation of the service life of contact relay, makes the practical of high frequency control circuit, reliability significantly
It improves.
Description of the drawings
Fig. 1 is the circuit diagram of the novel high-frequency arc ignition control circuit of the utility model；
Fig. 2 is the circuit connection diagram of the novel high-frequency arc ignition control circuit of the utility model.
In attached drawing：
10 high frequency transformers, 20 rectification circuits, 30 transistor switching circuits,
40 high voltage packages, 50 electric discharge blocks.
Specific embodiment
The utility model is described in detail below in conjunction with the accompanying drawings：
Fig. 1 is the circuit diagram of the novel high-frequency arc ignition control circuit of the utility model.According to figure 1 practicality
The novel high-frequency arc ignition control circuit of novel a kind of embodiment, including sequentially connected transistor switching circuit 30, rectified current
Road 20, high frequency transformer 10, high voltage package 40 and electric discharge block 50；Wherein, the primary side connection high-frequency ac of the high frequency transformer 10
Power supply, primary side of the secondary through the high voltage package 40 of the high frequency transformer 10 connect the input terminal of the rectification circuit 20；Institute
It states transistor switching circuit 30 to be turned on or off under the action of signal is controlled, on-off is led with control the rectification circuit 20
It opens；The rectification circuit 20 is used to the high-frequency ac power being converted into DC power supply；And the packet of high pressure 40 is used for
It boosts to the DC power supply, the secondary of the high voltage package 40 connects the electric discharge block 50；The electric discharge block 50 is carrying out
Electric arc is generated under the action of the DC power supply after boosting.
In said program, the primary side of high frequency transformer 10 connection high-frequency ac power, secondary connection high voltage package 40 and whole
Current circuit 20, realizes from high-frequency ac power and takes electricity, provides power input to high voltage package 40, rectified 20 rectification of circuit will be high
Frequency AC power is converted into DC power supply, and electric discharge block 50 is output to after the boosting of high voltage package 40, generates the electricity that welder needs
Arc, the break-make of circuit are controlled by transistor switching circuit 30, and triode, which can be realized, frequently to be opened and disconnect, and service life is long, this
The novel high-frequency arc ignition control circuit of utility model, simple in structure, flexible and convenient operation, the reliability of circuit is high, use cost
It is low.
Fig. 2 is the circuit connection diagram of the novel high-frequency arc ignition control circuit of the utility model.This shown practicality according to fig. 2
A kind of novel high-frequency arc ignition control circuit of novel embodiment, the transistor switching circuit 30 include field-effect tube metal-oxide-semiconductor,
First resistor R1 and second resistance R2, the first resistor R1 and second resistance R2 series connection, the grid of the metal-oxide-semiconductor are connected to
The common end of the first resistor R1 and second resistance R2, the first resistor R1 connections control signal, second electricity
Hinder R2 ground connection.
In said program, the rectification circuit 20 is the full wave diode rectifier circuit of full-bridge rectification topological structure, described
The drain electrode of metal-oxide-semiconductor is connected with the cathode of the diode of the full wave diode rectifier circuit, the source electrode of the metal-oxide-semiconductor with it is described complete
The anode of the diode of wave diode rectifier circuit is connected.
The novel high-frequency arc ignition control circuit of the utility model, the calibrated capacitance C1 of primary side and resistance of high frequency transformer 10
The input terminal of the R4 connections rectification circuit.
The secondary shunt capacitance C2 of the high voltage package 40.The both ends parallel resistance R3 of the corrective capacity C1.
The high-frequency arc strike control circuit of the utility model, such as can be applied to the electricity of the high-frequency arc strike of plasma cutting machine
Road, transistor switching circuit include the first resistor R1 being in series and second resistance R2, grid/G of triode such as metal-oxide-semiconductor Q1
Pole is connected with the common end of first resistor R1 and second resistance R2, and source electrode/S poles connect with the bleeder circuit that is made of R1 and R2
Ground terminal is connected.The drain electrode of metal-oxide-semiconductor Q1/D poles are connected with the cathode of the diode of full wave diode rectifier circuit, the source of metal-oxide-semiconductor Q1
Pole/S poles are connected with the anode of the diode of full wave diode rectifier circuit.
The novel high-frequency arc ignition control circuit of the utility model is the high-frequency ac power using major loop, control high pressure
Switching on and off for packet primary side and power supply, is boosted by high voltage package secondary, achievees the effect that striking.It is not pressed in inverter
During lower arc welding gun switch, control signal is not input to the G poles of metal-oxide-semiconductor Q1, and metal-oxide-semiconductor is not turned on, and high voltage package primary side can not form circuit, not have
There is striking effect；After lower switch, control signal is input to the G poles of metal-oxide-semiconductor Q1, metal-oxide-semiconductor Q1 conductings, high voltage package primary side resistance R4
It charges to secondary capacitance C2, discharges and be formed into a loop by electric discharge block, play striking effect.
The triodes such as the high-frequency arc strike control circuit of the utility model, high voltage package primary-side-control metal-oxide-semiconductor replace tradition to control
The relay of system, triode can open turn-off number of times height, avoid the short limitation of the service life of contact relay, make high frequency
Practical, the reliability of control circuit greatly improve.And having the advantages that simple in structure, control mode is flexible and convenient, reduction is set
Meter and manufacture cost.
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 also should
Belong to the scope of protection of the utility model.
Claims (6)
1. a kind of novel high-frequency arc ignition control circuit, which is characterized in that the circuit include sequentially connected transistor switching circuit,
Rectification circuit, high frequency transformer, high voltage package and electric discharge block；
Wherein, the primary side connection high-frequency ac power of the high frequency transformer, the secondary of the high frequency transformer is through the high pressure
The primary side of packet connects the input terminal of the rectification circuit；
The transistor switching circuit is turned on or off under the action of signal is controlled, with control the conducting of the rectification circuit or
It disconnects；
The rectification circuit is used to the high-frequency ac power being converted into DC power supply；And
For the high voltage package for boosting to the DC power supply, the secondary of the high voltage package connects the electric discharge block；
The electric discharge block generates electric arc under the action of the DC power supply after being boosted.
2. novel high-frequency arc ignition control circuit according to claim 1, which is characterized in that the transistor switching circuit packet
Include metal-oxide-semiconductor, first resistor R1 and second resistance R2, the first resistor R1 and second resistance R2 series connection, the grid of the MOS
The common end of the first resistor R1 and second resistance R2 are connected to, the first resistor R1 connections control signal is described
Second resistance R2 is grounded.
3. novel high-frequency arc ignition control circuit according to claim 2, which is characterized in that the rectification circuit is whole for full-bridge
Flow the full wave diode rectifier circuit of topological structure, the drain electrode of the metal-oxide-semiconductor and two poles of the full wave diode rectifier circuit
The cathode of pipe is connected, and the source electrode of the metal-oxide-semiconductor is connected with the anode of the diode of the full wave diode rectifier circuit.
4. novel high-frequency arc ignition control circuit according to claim 3, which is characterized in that the primary side of high frequency transformer is through school
Positive capacitance C1 connects the input terminal of the rectification circuit with resistance R4.
5. novel high-frequency arc ignition control circuit according to claim 4, which is characterized in that the secondary of the high voltage package is in parallel
Capacitance C2.
6. novel high-frequency arc ignition control circuit according to claim 4, which is characterized in that the both ends of the corrective capacity C1
Parallel resistance R3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721630805.XU CN207560426U (en) | 2017-11-29 | 2017-11-29 | A kind of novel high-frequency arc ignition control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721630805.XU CN207560426U (en) | 2017-11-29 | 2017-11-29 | A kind of novel high-frequency arc ignition control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207560426U true CN207560426U (en) | 2018-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721630805.XU Active CN207560426U (en) | 2017-11-29 | 2017-11-29 | A kind of novel high-frequency arc ignition control circuit |
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| CN (1) | CN207560426U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112235891A (en) * | 2020-11-03 | 2021-01-15 | 中国航天空气动力技术研究院 | Arc striking circuit and arc striking method for electric arc wind tunnel heater |
-
2017
- 2017-11-29 CN CN201721630805.XU patent/CN207560426U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112235891A (en) * | 2020-11-03 | 2021-01-15 | 中国航天空气动力技术研究院 | Arc striking circuit and arc striking method for electric arc wind tunnel heater |
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