What is an Inverter Welding Machine?


    david - Posted on 13 January 2011

        Although many of the basics of welding haven’t changed since World War II (and some of them remain unchanged since flux welding was introduced in the latter part of the 19th century), considerable advances have taken place in the equipment used for the process.
    Indeed, many of the modern welding machines would seem almost magically compact, powerful, and versatile to early welders, were they somehow to cross time to observe what happened to their craft in the future.

        These technical changes have made welding machines much smaller and lighter than they were of old, yet has kept (or increased) the power of these older devices. This means that welding can be carried out successfully on a much smaller scale, and in much more varied circumstances, than ever before.

        This is a huge boon to independent welders and hobbyists, much as the Internet has allowed many types of freelancers to use their skills and creativity to earn money without being fully dependent on the faltering corporate structure of the United States. welding machines are now portable enough to be carried into practically any nook or cranny that a human can climb or crawl into. Part of this technical advance consists in the availability of many different kinds of welding machine, too.

    Inverter welding machines

        welding machine control and quality have been greatly improved by the advances in inverter technology, and the miniaturization they allow has been the main source of today’s small yet potent welding machines. Inverter machines can be made up to 75% smaller than those which use a different type of technology, generally weigh less than a non-inverter machine of the same size would, and can frequently run off of household current.

        Inverter welding machines take the alternating current (AC) that comes out of the socket and convert it into direct current (DC), then use small built-in transformer to produce the desired amperage and wattage. These machines are a good choice because they automatically analyze, and correct for, any discrepancies between the power supplied and the power needed for the settings you have chosen.

        Inverters also allow very fine tuning of the arc with their infinitely adjustable “variable frequency”. Their one downside is their price, since they are naturally quite a bit more expensive than their less advanced counterparts. AC and DC power can be produced by an inverter, and they come in CC, CV, and CC/CV configurations. A CC/CV inverter is probably one of the most flexible machines on the current market.

    Transformer welding machines

        Transformer welding machines represent an older type of technology and are consequently bulkier, heavier, and far less versatile. They are good for AC MIG welding and not much more. Their major advantage, as might be expected, is that they are very cheap, comparatively speaking. They only come in CC (constant current) configuration. Their main function is to allow adjustment of the voltage.

    Transformer Rectifier welding machines

        Transformer rectifier machines are the larger and more versatile transformer machines that were devised pre-inverter to provide all other types of welding current. Their bulk and aging technology makes them a liability to the modern small welder, however.