What Is The Difference Between DC and AC Power?

Welder generators are machines that are capable of producing both DC (direct current) and AC (alternating current) power. DC and AC power are two different forms of electrical energy, and each has its own unique characteristics and applications in welding.

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Direct Current (DC) Power :

DC power is a type of electrical energy that flows in only one direction. In welder generators, DC power is often used for welding applications because it provides a constant voltage and amperage. DC welding is ideal for welding metals with thicker sections and for welding in outdoor environments.

The main advantage of using DC power for welding is that it produces a more stable and consistent arc, which results in better penetration and cleaner welds. DC power is also more efficient than AC power, and it requires less maintenance because it has fewer components than AC power systems.

Alternating Current (AC) Power:

AC power is a type of electrical energy that changes direction periodically, usually at a rate of 60 cycles per second in the United States. AC power is commonly used in welding for lighter metals and thinner sections, and it is well-suited for indoor welding applications.

One of the advantages of using AC power for welding is that it produces a softer arc that is easier to control, making it better suited for welding thinner materials. However, AC power is less efficient than DC power and requires more maintenance due to its more complex electrical system.

The main difference between DC power and AC power in welder generators lies in their characteristics and applications. DC power is more stable and efficient, making it ideal for outdoor welding applications and thicker metal sections. AC power, on the other hand, is better suited for indoor welding and thinner materials due to its softer arc and ease of control. Ultimately, the choice between DC and AC power in welder generators depends on the specific welding application and the materials being welded.

Hi Al-Mike, Basicly a ac/dc machine gives a person more welding rod options to choose from. A/C rods are ok for most welding but as the demand of type of welds increases a DC machine will weld differently with different rods making welding easier.

6011,6013 are the most popular AC welding rods because the run nice on AC.

7018,7024,6010 are three very nice welding rods for DC reverse polarity (electrode positive). 7018 is the most verstial rods around. Runs good flat, horzontial, vertical or overhead. 6011 will also weld this way but not with so much control as 7018. 7024 is great for fast flat or horzontial welds and looks very nice. 6010 is a good choice where deep penatration is needed. 6010 is used to put the root weld in while welding a pipe joint or thick plate joint. 6010 straight polarity (electrode negitive) runs very nice for welding galvanized iron. Electrode refers to the lead that holds the welding rod.

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Buying a AC/DC machine just gives you more rod choices for anytype of welding.

The amount of weld Amps needed is depending on rod size. 3/32", 1/8", 5/32", 3/16" etc, with 1/8" being the most popular. A 150amp machine will handle 1/8" about 110 to 130 amps needed, very easy and some 5/32" rod. It will also weld 3/32" rod for light gage sheetmetal about 70 to 90 amps required.

If your "not" going to produce alot of welds then a 20% duty cycle will be enough. Duty cycle is how long you can weld without letting the machine rest (cool down). The longer the duty cycle the more expensive the cost of the machine.

With a DC machine you can also Tig weld.

Apperently there are no copper windings being produce on any welding machine, what the guts of a welding machine are made of. Copper windings make a better arc and last longer.

For general around the house welding, it's hard to beat the Lincoln AC/DC or AC machine buzz box. I've seen them for around $500 for the AC/DC machine with 230v, 20% duty cycle. If you want to spend $1500 then you can get 60% duty cycle and $2200 for a 100% duty cycle. Now you see where the money goes on welding machines.

Hope This helps!

T_Bone

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