For a welding process to be successful, the 2 parts to be welded must be exposed to an intense heating source usually created with an electrical arc which temperature can reach up to 3000°C.

The quality of the welding depends, among others, on a high control of this electrical arc and of the electrical current used to produce it.

J&D transducers measure this current, contributing to the control and good function of the welding application.


Power supplies for welding
Power supplies for plasma welding
Plasma cutting
Inductive heating


The plasma arc welding process was introduced to better control the arc welding process in lower current ranges.

Plasma enables an advanced level of control and accuracy in order to:

produce high quality welds in miniature or high-precision applications
increases electrodes’ life for high-production requirements
Plasma arc welding requires high current levels anywhere between 100 and 600 ampere.

Depending on the type of material used and object welded, a specific current profile must also be maintained to ensure a high-quality weld.

This is the role of J&D’s transducers.

They measure and control precisely the level of current that is used to heat the plasma, ensuring a strong and lasting weld.

Why Current Transducers are required in Welding

In welding, it is important to be able to know and control electricity. This is because welding requires high heat of over 3,000°C, and electricity that can generate such high heat is required.

There fore, accurate measurement of electricity to improve the quality of welding is an important point in the welding industry.

The Role of Current Transducers in Welding

Resistance welding and plasma arc welding require large amounts of current. At this time, the role of the current transducer is important. If we can know “how much high current can be transmitted with high quality”, it will be possible to weld strong and lasting.

In resistance welding, heat is generated by the contact resistance of the joint that sends a large current to the weld, but after heating the joint to a molten state, it is welded by pressing with mechanical pressure. Simply put, it is a kind of pressure welding that uses electricity.

Here, J&D Current Transducers measure and control the current level with high accuracy, enabling strong and lasting welding of resistance welding.

Plasma arc welding uses the principle of heating the gas at high temperatures(conductivity) to mix electrons in the gas atoms. At this time, plasma arc welding requires a high current of 100A~600A.

J&D Current Transducers will have an important role in precise and powerful welding as it enables accurate measurement and control of current level.


– Power supplies for welding

– Power supplies for plasma welding

– Plasma cutting

– Electrolysis

– Inductive heating