CN204122942U - Anti-High-frequency Interference two-stage isolation trigger control circuit - Google Patents
Anti-High-frequency Interference two-stage isolation trigger control circuit Download PDFInfo
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- CN204122942U CN204122942U CN201420182884.2U CN201420182884U CN204122942U CN 204122942 U CN204122942 U CN 204122942U CN 201420182884 U CN201420182884 U CN 201420182884U CN 204122942 U CN204122942 U CN 204122942U
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- diode
- buffer circuit
- connector
- welding machine
- control circuit
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Abstract
The utility model discloses a kind of anti-High-frequency Interference two-stage isolation trigger control circuit, comprising: the first order buffer circuit connected successively, second level buffer circuit and rear class circuits for triggering; First order buffer circuit, for producing first order isolation, and by trigger switch conducting second level buffer circuit between trigger switch and welding machine; Second buffer circuit, for producing second level isolation, and by first order buffer circuit conducting rear class circuits for triggering between trigger switch and welding machine; Rear class circuits for triggering, for triggering welding machine work.The trigger control circuit of butt welding machine has carried out dual resisteance protection; the triggering work of welding machine does not affect by external interference; effectively can prevent the welding machine misoperation because High-frequency Interference etc. causes, avoid the damage of control circuit device, improve anti-interference and the job stability of welding machine.It is little that the utility model amasss body, and cost is low, and antijamming capability is strong, reliable in quality.
Description
Technical field
The utility model relates to source of welding current technical field, particularly relates to a kind of anti-High-frequency Interference two-stage isolation trigger control circuit.
Background technology
Increasingly mature along with contravariant welding machine electric power technology, because it is little, lightweight relative to traditional welding machine volume, function is many, good welding performance and the plurality of advantages such as energy-conservation, its scope of application is also more and more wider.Meanwhile, higher requirement be it is also proposed to the anti-interference of inverter type welder and reliable in quality stability.For current welding machine, trigging control project plan comparison is simple.Owing to not having effective isolation control circuit, therefore the triggering work of welding machine is vulnerable to extraneous interference (such as High-frequency Interference), thus occurs welding machine misoperation.Be easy to like this cause welding machine to damage, and also had a strong impact on the stability of welding machine work.
Utility model content
Based on this, be necessary for prior art defect, a kind of anti-High-frequency Interference two-stage isolation trigger control circuit is provided.
Its technical scheme is as follows.
A kind of anti-High-frequency Interference two-stage isolation trigger control circuit, comprising: first order buffer circuit, second level buffer circuit and rear class circuits for triggering, described first order buffer circuit, described second level buffer circuit are connected successively with described rear class circuits for triggering;
Described first order buffer circuit, for producing first order isolation, and by second level buffer circuit described in trigger switch conducting between trigger switch and welding machine;
Described second buffer circuit, for producing second level isolation, and by rear class circuits for triggering described in the conducting of described first order buffer circuit between trigger switch and welding machine;
Described rear class circuits for triggering, for triggering welding machine work.
Wherein in an embodiment, described first order buffer circuit comprises isolating transformer, the second electric capacity, the 3rd resistance, the 5th diode, the 7th diode, the 5th resistance and full bridge rectifier; Wherein, described 5th diode and described 7th diode are Zener diode;
The first pin and one end of described 3rd resistance of described isolating transformer are connected the two poles of the earth of accessory power supply respectively, the other end of described 3rd resistance connects the positive pole of described 5th diode, the negative pole of described 5th diode connects the negative pole of described 7th diode, the positive pole of described 7th diode connects the first pin of described isolating transformer, the two ends of described 5th resistance connect the described positive pole of the 5th diode and the crus secunda of described isolating transformer respectively, two inputs of described full bridge rectifier connect the described positive pole of the 5th diode and the crus secunda of described isolating transformer respectively, tripod and the 4th pin of described isolating transformer are connected the two ends of trigger switch respectively, one end of described second electric capacity connects the 4th pin of described isolating transformer, the other end ground connection of described second electric capacity.
Wherein in an embodiment, described first order buffer circuit also comprises the 3rd connector, and the tripod of described isolating transformer and the 4th pin are connected the two ends of trigger switch by described 3rd connector.
Wherein in an embodiment, described 3rd connector is tripod connector.
Wherein in an embodiment, described first order buffer circuit also comprises the second connector, and the first pin of described isolating transformer and one end of described 3rd resistance are connected the two poles of the earth of accessory power supply by described second connector.
Wherein in an embodiment, described second connector is bipod connector.
Wherein in an embodiment, described second level buffer circuit comprises the first electric capacity, the 4th resistance, the second diode, the first resistance and optocoupler; Wherein, described first electric capacity is electrochemical capacitor, and described second diode is Zener diode;
The positive pole of described first electric capacity connects the output cathode of described full bridge rectifier, the negative pole of described first electric capacity connects the output negative pole of described full bridge rectifier, the two ends of described 4th resistance connect the two poles of the earth of described first electric capacity respectively, the negative pole of described second diode connects the positive pole of described first electric capacity, the positive pole of described second diode connects one end of described first resistance, the other end of described first resistance connects the first pin of described optocoupler, and the crus secunda of described optocoupler connects the negative pole of described first electric capacity.
Wherein in an embodiment, described rear class circuits for triggering comprise triode and the 3rd diode;
The grid of described triode connects the tripod of described optocoupler, the source electrode of described triode connects the 4th pin of described optocoupler and the negative pole of described 3rd diode respectively, the grounded drain of described triode, the positive pole of described 3rd diode connects the trigger control end of welding machine.
Wherein in an embodiment, described rear class circuits for triggering also comprise the first connector, and the drain electrode of described triode is by described first connector ground connection, and the positive pole of described 3rd diode connects the trigger control end of welding machine by described first connector.
Wherein in an embodiment, described first connector is tripod connector.
Below the advantage of the technical program or principle are described.
By the technical program anti-High-frequency Interference two-stage isolation trigger control circuit, trigger switch through two-stage buffer circuit, also namely after first order buffer circuit and second level buffer circuit, just triggering welding machine work.The trigger control circuit of butt welding machine has carried out dual resisteance protection; the triggering work of welding machine does not affect by external interference; effectively can prevent the welding machine misoperation because High-frequency Interference etc. causes, avoid the damage of control circuit device, improve anti-interference and the job stability of welding machine.It is little that the utility model amasss body, and cost is low, and antijamming capability is strong, reliable in quality.
Accompanying drawing explanation
Fig. 1 is the structural representation of High-frequency Interference two-stage isolation trigger control circuit anti-described in the utility model embodiment;
Fig. 2 is the circuit diagram of High-frequency Interference two-stage isolation trigger control circuit anti-described in the utility model embodiment.
Description of reference numerals:
10, first order buffer circuit, 20, second level buffer circuit, 30, rear class circuits for triggering.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model embodiment is described in detail.
As shown in Figure 1, be the structural representation of High-frequency Interference two-stage isolation trigger control circuit anti-described in the utility model embodiment.
A kind of anti-High-frequency Interference two-stage isolation trigger control circuit, comprise: first order buffer circuit 10, second level buffer circuit 20 and rear class circuits for triggering 30, described first order buffer circuit 10, described second level buffer circuit 20 are connected successively with described rear class circuits for triggering 30;
Described first order buffer circuit 10, for producing first order isolation, and by second level buffer circuit 20 described in trigger switch conducting between trigger switch and welding machine;
Described second buffer circuit 20, for producing second level isolation, and by rear class circuits for triggering 30 described in the conducting of described first order buffer circuit 10 between trigger switch and welding machine;
Described rear class circuits for triggering 30, for triggering welding machine work.
Particularly, please consider and examine 2 figure, be the circuit diagram of High-frequency Interference two-stage isolation trigger control circuit anti-described in the utility model embodiment.
Described first order buffer circuit comprises isolating transformer T
1, the second electric capacity C
2, the 3rd resistance R
3, the 5th diode D
5, the 7th diode D
7, the 5th resistance R
5and full bridge rectifier; Wherein, described 5th diode D
5with described 7th diode D
7for Zener diode; Described full bridge rectifier comprises the first diode D
1, the 4th diode D
4, the 6th diode D
6with the 8th diode D
8;
Described isolating transformer T
1the first pin and described 3rd resistance R
3one end connect the two poles of the earth of accessory power supply, described 3rd resistance R respectively
3the other end connect described 5th diode D
5positive pole, described 5th diode D
5negative pole connect described 7th diode D
7negative pole, described 7th diode D
7positive pole connect described isolating transformer T
1the first pin, described 5th resistance R
5two ends connect the positive pole of described 5th diode D5 and described isolating transformer T respectively
1crus secunda, two inputs of described full bridge rectifier connect described 5th diode D respectively
5positive pole and described isolating transformer T
1crus secunda, described isolating transformer T
1tripod and the 4th pin be connected the two ends of trigger switch, described second electric capacity C respectively
2one end connect described isolating transformer T
1the 4th pin, described second electric capacity C
2other end ground connection.
Described first order buffer circuit also comprises the 3rd connector CON
3, described isolating transformer T
1tripod and the 4th pin by described 3rd connector CON
3connect the two ends of trigger switch.
Described 3rd connector CON
3for tripod connector.Described 3rd connector CON
3also can be bipod or other numbers.
Described first order buffer circuit also comprises the second connector CON
2, described isolating transformer T
1the first pin and described 3rd resistance R
3one end by described second connector CON
2connect the two poles of the earth of accessory power supply.
Described second connector CON
2for bipod connector.Described second connector CON
2also can be tripod or more.
Described second connector CON
2accessory power supply is provided, such as can for exchanging 9V, R
3for current-limiting resistance, D
5and D
7for Zener diode, restriction both end voltage, described 3rd connector CON
3external trigger switch, presses trigger switch, and the tripod of isolating transformer T1, the 4th pin (be also the 3rd pin, the 4th pin in Fig. 2, Hereinafter the same, repeat no more) two terminal shortcircuits, voltage is 0V, C
2for the lower ground electric capacity that is coupled, filtering interference signals, isolating transformer T
1because of the 3rd pin, the 4th pin two terminal shortcircuit, the 1st pin, the 2nd pin both end voltage reduce, thus improve R
5resistance both end voltage, through diode D
1, D
4, D
6and D
8full-bridge rectification, is converted to dc source by AC power.
Described second level buffer circuit comprises the first electric capacity C
1, the 4th resistance R
4, the second diode D
2, the first resistance R
1with optocoupler U
1; Wherein, described first electric capacity C
1for electrochemical capacitor, described second diode D
2for Zener diode;
Described first electric capacity C
1positive pole connect the output cathode of described full bridge rectifier, described first electric capacity C
1negative pole connect the output negative pole of described full bridge rectifier, described 4th resistance R
4two ends connect described first electric capacity C respectively
1the two poles of the earth, described second diode D
2negative pole connect described first electric capacity C
1positive pole, described second diode D
2positive pole connect described first resistance R
1one end, described first resistance R
1the other end connect described optocoupler U
1the first pin, described optocoupler U
1crus secunda connect described first electric capacity C
1negative pole.
Through diode D
1, D
4, D
6and D
8full-bridge rectification, after AC power is converted to dc source, electrochemical capacitor C
1filtering, R
4for load resistance and electric capacity C
1parallel connection, D
2for Zener diode, the conducting when reaching voltage-stabiliser tube magnitude of voltage, through R
1current-limiting resistance, optocoupler U
1work, thus second level buffer circuit obtains conducting.
Described rear class circuits for triggering comprise triode Q
1with the 3rd diode D
3;
Described triode Q
1grid connect described optocoupler U
1tripod, described triode Q
1source electrode connect described optocoupler U respectively
1the 4th pin and described 3rd diode D
3negative pole, described triode Q
1grounded drain, described 3rd diode D
3positive pole connect the trigger control end of welding machine.
Described rear class circuits for triggering also comprise the first connector CON
1, described triode Q
1drain electrode by described first connector CON
1ground connection, described 3rd diode D
3positive pole by described first connector CON
1connect the trigger control end of welding machine.
Described first connector CON
1for tripod connector.
As optocoupler U
1work, after the buffer circuit conducting of the second level, triode Q
1, diode D
3with plug-in unit CON
1circuit turn-on, controls late-class circuit R
2resistance output voltage, triggers welding machine steady operation, exports PWM(Pulse Width Modulation, pulse width modulation, is called for short pulsewidth modulation) signal is with or without control.R before triggering
2be in high potential, welding machine does not work; R after triggering
2be in electronegative potential, welding machine work.Achieve trigger switch through two-stage buffer circuit, be respectively isolating transformer and light-coupled isolation control circuit, guarantee effective duplicate protection isolation control circuit.
Below the advantage of the present embodiment or principle are described.
By the technical program anti-High-frequency Interference two-stage isolation trigger control circuit, trigger switch through two-stage buffer circuit, also namely after first order buffer circuit and second level buffer circuit, just triggering welding machine work.The trigger control circuit of butt welding machine has carried out dual resisteance protection; the triggering work of welding machine does not affect by external interference; effectively can prevent the welding machine misoperation because High-frequency Interference etc. causes, avoid the damage of control circuit device, improve anti-interference and the job stability of welding machine.It is little that the utility model amasss body, and cost is low, and antijamming capability is strong, reliable in quality.
The above embodiment only have expressed several embodiment of the present utility model, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.
Claims (10)
1. an anti-High-frequency Interference two-stage isolation trigger control circuit, it is characterized in that, comprise: first order buffer circuit, second level buffer circuit and rear class circuits for triggering, described first order buffer circuit, described second level buffer circuit are connected successively with described rear class circuits for triggering;
Described first order buffer circuit, for producing first order isolation, and by second level buffer circuit described in trigger switch conducting between trigger switch and welding machine;
Described second buffer circuit, for producing second level isolation, and by rear class circuits for triggering described in the conducting of described first order buffer circuit between trigger switch and welding machine;
Described rear class circuits for triggering, for triggering welding machine work.
2. anti-High-frequency Interference two-stage isolation trigger control circuit according to claim 1, it is characterized in that, described first order buffer circuit comprises isolating transformer, the second electric capacity, the 3rd resistance, the 5th diode, the 7th diode, the 5th resistance and full bridge rectifier; Wherein, described 5th diode and described 7th diode are Zener diode;
The first pin and one end of described 3rd resistance of described isolating transformer are connected the two poles of the earth of accessory power supply respectively, the other end of described 3rd resistance connects the positive pole of described 5th diode, the negative pole of described 5th diode connects the negative pole of described 7th diode, the positive pole of described 7th diode connects the first pin of described isolating transformer, the two ends of described 5th resistance connect the described positive pole of the 5th diode and the crus secunda of described isolating transformer respectively, two inputs of described full bridge rectifier connect the described positive pole of the 5th diode and the crus secunda of described isolating transformer respectively, tripod and the 4th pin of described isolating transformer are connected the two ends of trigger switch respectively, one end of described second electric capacity connects the 4th pin of described isolating transformer, the other end ground connection of described second electric capacity.
3. anti-High-frequency Interference two-stage isolation trigger control circuit according to claim 2, it is characterized in that, described first order buffer circuit also comprises the 3rd connector, and the tripod of described isolating transformer and the 4th pin are connected the two ends of trigger switch by described 3rd connector.
4. anti-High-frequency Interference two-stage isolation trigger control circuit according to claim 3, it is characterized in that, described 3rd connector is tripod connector.
5. anti-High-frequency Interference two-stage isolation trigger control circuit according to claim 2, it is characterized in that, described first order buffer circuit also comprises the second connector, and the first pin of described isolating transformer and one end of described 3rd resistance are connected the two poles of the earth of accessory power supply by described second connector.
6. anti-High-frequency Interference two-stage isolation trigger control circuit according to claim 5, it is characterized in that, described second connector is bipod connector.
7. anti-High-frequency Interference two-stage isolation trigger control circuit according to claim 2, it is characterized in that, described second level buffer circuit comprises the first electric capacity, the 4th resistance, the second diode, the first resistance and optocoupler; Wherein, described first electric capacity is electrochemical capacitor, and described second diode is Zener diode;
The positive pole of described first electric capacity connects the output cathode of described full bridge rectifier, the negative pole of described first electric capacity connects the output negative pole of described full bridge rectifier, the two ends of described 4th resistance connect the two poles of the earth of described first electric capacity respectively, the negative pole of described second diode connects the positive pole of described first electric capacity, the positive pole of described second diode connects one end of described first resistance, the other end of described first resistance connects the first pin of described optocoupler, and the crus secunda of described optocoupler connects the negative pole of described first electric capacity.
8. anti-High-frequency Interference two-stage isolation trigger control circuit according to claim 7, it is characterized in that, described rear class circuits for triggering comprise triode and the 3rd diode;
The grid of described triode connects the tripod of described optocoupler, the source electrode of described triode connects the 4th pin of described optocoupler and the negative pole of described 3rd diode respectively, the grounded drain of described triode, the positive pole of described 3rd diode connects the trigger control end of welding machine.
9. anti-High-frequency Interference two-stage isolation trigger control circuit according to claim 8, it is characterized in that, described rear class circuits for triggering also comprise the first connector, the drain electrode of described triode is by described first connector ground connection, and the positive pole of described 3rd diode connects the trigger control end of welding machine by described first connector.
10. anti-High-frequency Interference two-stage isolation trigger control circuit according to claim 9, it is characterized in that, described first connector is tripod connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420182884.2U CN204122942U (en) | 2014-04-15 | 2014-04-15 | Anti-High-frequency Interference two-stage isolation trigger control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420182884.2U CN204122942U (en) | 2014-04-15 | 2014-04-15 | Anti-High-frequency Interference two-stage isolation trigger control circuit |
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| Publication Number | Publication Date |
|---|---|
| CN204122942U true CN204122942U (en) | 2015-01-28 |
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|---|---|---|---|
| CN201420182884.2U Expired - Fee Related CN204122942U (en) | 2014-04-15 | 2014-04-15 | Anti-High-frequency Interference two-stage isolation trigger control circuit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108204793A (en) * | 2017-12-08 | 2018-06-26 | 中国船舶重工集团公司第七〇九研究所 | A kind of movable body position measurement system and test method based on twin-stage isolation method |
| CN114577328A (en) * | 2020-11-30 | 2022-06-03 | 核工业理化工程研究院 | Anti-interference method and device for vibration measurement |
-
2014
- 2014-04-15 CN CN201420182884.2U patent/CN204122942U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108204793A (en) * | 2017-12-08 | 2018-06-26 | 中国船舶重工集团公司第七〇九研究所 | A kind of movable body position measurement system and test method based on twin-stage isolation method |
| CN114577328A (en) * | 2020-11-30 | 2022-06-03 | 核工业理化工程研究院 | Anti-interference method and device for vibration measurement |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200604 Address after: Room 301-305, building 1, 3883 Yuanjiang Road, Minhang District, Shanghai 201100 Patentee after: Shanghai Huhang Satellite Technology Co., Ltd Address before: Qingpu 201700 waiqingsong road Shanghai City, No. 7177 Patentee before: SHANGHAI HUGONG ELECTRIC (GROUP) Co.,Ltd. |
|
| 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: 20150128 Termination date: 20210415 |