E-4E-4

THEORY OF OPERATION

FIGURE E.2 - High Voltage/High Frequency Circuit.

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INPUT POWER

MAIN

TRANSFORMER

POLARITY SWITCH

BY-PASS

BOARD

WORK

ELECTRODE

HI-FREQUENCY

TRANSFORMER

TOC

SWITCH BYPASS ASBLY

H1

H2

H3

X1

X2

AC DC+

SCR

BRIDGE

AC DC-

SHUNT

F

E

E

D

B

A

C

K

C H O K E

HIGH VOLTAGE TRANSFORMER CIRCUIT

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18VAC

 

 

115VAC

 

 

 

18VAC

CONTROL

POWER

115 VAC

 

 

 

 

 

FAN

 

115VAC

BOARD

"ON"

 

DIGITAL

 

 

 

 

 

 

Receptacle

 

 

 

 

 

DISPLAY

Circuit Breaker

 

 

 

 

 

Protected

 

 

 

 

 

MODE

 

 

 

 

 

 

SWITCH

 

 

REMOTE

 

 

 

 

 

 

RECEPTACLE

THERMAL

GAS

THERMO-

OUTPUT

 

 

 

STATS

 

 

 

 

 

 

HIGH VOLTAGE / HIGH FREQUENCY

CIRCUIT

The control board passes the 115VAC voltage to the primary of the high voltage transformer. The secondary of the high voltage transformer is coupled to a spark gap generator and also to the high frequency trans- former. The high frequency transformer transfers the high frequency “spark” to the electrode terminal which is coupled to the TIG torch.

NOTE: Unshaded areas of Block Logic

Diagram are the subject of discussion

PRECISION TIG® 225

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Image 36
Lincoln Electric SVM186-A High Voltage / High Frequency Circuit, Figure E.2 High Voltage/High Frequency Circuit

SVM186-A specifications

The Lincoln Electric SVM186-A is a versatile and highly efficient welding machine that stands out in the competitive landscape of industrial welding equipment. Designed to meet the needs of both professionals and hobbyists, this machine combines advanced technology with robust construction, delivering outstanding performance in various welding applications.

One of the standout features of the SVM186-A is its multi-process capability. This welding machine can handle MIG, TIG, and Stick welding processes, making it suitable for a diverse range of projects, from light fabrication to heavy-duty work. This flexibility reduces the need for multiple machines, saving time and space for users who require versatility in their welding operations.

The SVM186-A is powered by a reliable and durable inverter technology, which ensures a stable arc and efficient operation across different materials, including stainless steel, aluminum, and mild steel. This inverter technology not only enhances performance but also reduces energy consumption, making it an environmentally friendly choice.

Another notable characteristic of the SVM186-A is its user-friendly interface. The digital display provides real-time information on voltage and wire feed speed, allowing welders to easily adjust settings for optimal results. This intuitive control panel design makes it accessible for both novice welders and seasoned professionals who value precision.

The machine is also built with safety features in mind. It comes equipped with overcurrent protection and thermal overload protection to prevent damage during operation. This ensures that users can work confidently, knowing that the equipment is designed to handle demanding tasks while prioritizing safety.

Portability is another advantage of the SVM186-A. Weighing in at a relatively light weight compared to other industrial welders, this machine is designed for ease of transport. Whether working on-site or in a workshop, welders can easily move the equipment as needed.

In summary, the Lincoln Electric SVM186-A is a sophisticated welding machine that merges technology and practicality. Its multi-process capability, inverter technology, user-friendly interface, safety features, and portability make it a top choice for those seeking dependable and efficient welding solutions. Whether for professional fabrication or personal projects, the SVM186-A is equipped to handle the demands of modern welding tasks with exceptional ease and effectiveness.