CN202998054U - Remote controller interface circuit for welding current - Google Patents
Remote controller interface circuit for welding current Download PDFInfo
- Publication number
- CN202998054U CN202998054U CN 201220710636 CN201220710636U CN202998054U CN 202998054 U CN202998054 U CN 202998054U CN 201220710636 CN201220710636 CN 201220710636 CN 201220710636 U CN201220710636 U CN 201220710636U CN 202998054 U CN202998054 U CN 202998054U
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- CN
- China
- Prior art keywords
- circuit
- remote controller
- control device
- foot control
- welding current
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
Disclosed in the utility model is a remote controller interface circuit for a welding current. The remote controller interface circuit comprises an electromagnetic compatibility (EMC) circuit, a linear isolation circuit, a follower and a remote controller identification circuit; the EMC circuit and the linear isolation circuit are connected in sequence; the output terminal of the linear isolation circuit is connected with an analog input port of a controller that is also connected with a remote controller identification circuit. According to the utility model, an HCNR200 linear optical coupler is used to design the isolation circuit and the EMC circuit is arranged at the signal input terminal, thereby effectively inhibiting the interference. Because only a 4.8-V power supply is provided for the remote controller, so that the optionality for remote controller is provided in a large range and thus remote controller with the resistance value in a range from 100 ohms to several hundred kiloohoms. And because the 5-V power supply is arranged at the secondary of the optical coupler and the follower is added, the circuit can be directly connected to the analog input port of the MCU. Moreover, the provided circuit that is designed reasonably and practically is suitable for wide application in the industry.
Description
Technical field
The utility model belongs to the technical field of source of welding current foot control device, is specifically related to a kind of foot control device interface circuit for welding current.
Background technology
At present, the foot control device (remote controller) of the source of welding current on market all adopts switch transition or relay conversion circuit, the sort circuit interference ratio is larger, and the foot control device of every kind of power supply must with the foot control device of specific resistance, be given the client and sell the commercial city and brought very large trouble.
The utility model content
The purpose of utility model: the utility model provides a kind of and has disturbed little, applied widely and control the foot control device interface circuit that is used for simply and easily welding current.
Technical scheme: in order to achieve the above object, the utility model is by the following technical solutions:
A kind of foot control device interface circuit for welding current, comprise electromagnetic compatibility circuit, circuit linearity insulating circuit, follower and foot control device identification circuit, described electromagnetic compatibility circuit and circuit linearity insulating circuit are linked in sequence, the output of circuit linearity insulating circuit connects the analog input mouth of controller, and described controller also is connected with foot control device identification circuit.
As optimization, also be connected with the follower of being convenient to connect controller between described circuit linearity insulating circuit and controller.
As optimization, described foot control device identification circuit is provided with two contacts.
Beneficial effect: the utility model uses the HCNR200 linear optical coupling to be designed to buffer circuit, and at signal input part EMC circuit, limitedly suppressed interference, because the power supply of providing for the foot control device only has 4.8V, the a wide range of washability that the foot control device is provided, the foot control device from 100 Europe to hundreds of K Europe can use.Because the secondary of optocoupler used the 5V power supply and increased follower, can directly link the analog input mouth of MCU, so sort circuit can be applicable to analog-and digital-formula welding machine electric power, the utility model practicality reasonable in design is fit to widely used within the industry.
Description of drawings
Fig. 1 is circuit diagram of the present utility model.
Embodiment
A kind of foot control device interface circuit for welding current as shown in Figure 1, comprise electromagnetic compatibility circuit, circuit linearity insulating circuit, follower and foot control device identification circuit, electromagnetic compatibility circuit and circuit linearity insulating circuit are linked in sequence, the output of circuit linearity insulating circuit connects the analog input mouth of controller, controller also is connected with foot control device identification circuit, also be connected with the follower of being convenient to connect controller between circuit linearity insulating circuit and controller, foot control device identification circuit is provided with two contacts.
The power supply of 12V becomes 4.8V to pass through voltage to foot control device variable potentiometer POT by the step-down of 1D1 voltage-stabiliser tube, foot control device signal out suppresses through 1C1 and 1C2 the EMC circuit inhibition difference mode signal that common-mode signal forms through 1C3, L, 1C4 again, then deliver to the circuit linearity insulating circuit that is formed by 1N2,1N3 and peripheral circuit thereof, by the 5 pin outputs of 1N3.Adjusting W1 can regulate the amplitude of the 5 pin output signals of 1N3.Increased for the ease of being connected with MCU the follower that one-level is comprised of N1, the output of whole circuit both can have been received analog circuit also can receive MCU.
1N1 and peripheral circuit form foot control device identification circuit.On foot control device plug two direct short circuits of pin, after the foot control device is received on power supply, A1 and A2 point short circuit, the output of 1N1 transfers low level to by high level, can be directly by removing to identify the foot control device to MCU or by going as control signal to other circuit, going to control the conversion of foot control device benchmark and power supply local reference.
Claims (3)
1. foot control device interface circuit that is used for welding current, it is characterized in that: comprise electromagnetic compatibility circuit, circuit linearity insulating circuit, follower and foot control device identification circuit, described electromagnetic compatibility circuit and circuit linearity insulating circuit are linked in sequence, the output of circuit linearity insulating circuit connects the analog input mouth of controller, and described controller also is connected with foot control device identification circuit.
2. a kind of foot control device interface circuit for welding current according to claim 1, is characterized in that: also be connected with the follower of being convenient to connect controller between described circuit linearity insulating circuit and controller.
3. a kind of foot control device interface circuit for welding current according to claim 1, it is characterized in that: described foot control device identification circuit is provided with two contacts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220710636 CN202998054U (en) | 2012-12-21 | 2012-12-21 | Remote controller interface circuit for welding current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220710636 CN202998054U (en) | 2012-12-21 | 2012-12-21 | Remote controller interface circuit for welding current |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202998054U true CN202998054U (en) | 2013-06-12 |
Family
ID=48569179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220710636 Expired - Lifetime CN202998054U (en) | 2012-12-21 | 2012-12-21 | Remote controller interface circuit for welding current |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202998054U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104516388A (en) * | 2014-12-16 | 2015-04-15 | 珠海格力电器股份有限公司 | Communication circuit and air conditioner of self-adaptation power supply |
-
2012
- 2012-12-21 CN CN 201220710636 patent/CN202998054U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104516388A (en) * | 2014-12-16 | 2015-04-15 | 珠海格力电器股份有限公司 | Communication circuit and air conditioner of self-adaptation power supply |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130612 |
|
| CX01 | Expiry of patent term |