- providing portable, reliable power wherever you are
WHAT IS INVERTER WELDING
An inverter-based welder
provides many benefits over traditional copper wound transformer machines. The most notable benefit is that of
size and weight. An inverter is smaller and is a fraction of the weight of a transformer based machine so it is
far more lightweight and portable. Inverters use a lot less input power to get the same output power than the
older transformer type machines, so they consume a lot less electricity and therefore are greener to
As an inverter's power output
is controlled electronically there is an infinite amount of power adjustment. In most cases (and featured in all
our machines) a rotating control knob is used to adjust the power output of these modules, thus allowing
fingertip adjustment between 0 and 100%. This enables the user to accurately and very finely control the welding
output to suit any given application. It is usual to find that traditional welders have a number of step
settings. These have limitations where setting 2 might not be powerful enough but setting 3 is too much. Using
an inverter-based welder allows you to set the welding power output exactly where you want it.
INVERTER WELDERS RELIABLE?
Yes! Years of development have
resulted in cost effective and very efficient power modules. We use Eupec Infineon® inverter modules to power
our welding machines. The company is part of the Siemens group and have been producing the highest quality
power modules for many years.
The inverter modules that we
feature in our welding machines are also referred to as IGBT's. This stands for Inter Gate Bi-Polar Transistor.
There is another type of power module called a MOSFET. Whilst they perform in a similar way to IGBT's they are a
much older technology and are often built in banks. As a single component, most MOSFET's are small in size and
power output so many MOSFETs are required (typically in lower powered welding machines) to achieve the same
output as a single specified IGBT. The disadvantages to these modules are that if one MOSFET fails the whole
machine fails. Often, based on our experience as a leading warranty repairer for other welding manufacturers, we
find that one single failure can lead to others in the 'bank' failing too. In many cases, MOSFET's are used in
cheaper machines to keep the cost down.
IGBT power modules are more
efficient and are less prone to failure - one reason why we use them in all our machines. In addition we are
also able to produce welding machines with much higher duty cycles as the inverter modules (IGBT's) we use have
a higher specification than many leading brands.
In an easier
to visualise analogy think about starting your car with a with a proper 12v car battery instead of using a large
number of AA household batteries. That's the difference in using IGBT's over MOSFET's. Pick the right components
for the job. Pick an inverter welder powered by Infineon IGBT's