A dc welder is a lot cheaper by fair of the two
Some electrodes (welding rods) can be used AC or DC. Some are strictly DC. You may find that most electrodes run smoother on DC. Most industries purchase machines with DC capability.
DC generators require more time and material to make. Because of this, it will be cheaper to purchase an AC generator. DC generators are typically a better product as well, and you get what you pay for.
formula for ac to dc
Choice of electricity defines ac and dc
A dc series motor can work on dc and ac because dc motors are totally reversible.
It produces alternating current AC. It is cheaper to build than a DC or an AC - DC welder. Most electrodes can be used with DC. Some can be used for both. Very few are AC only. DC produces a smoother arc, is easier to strike an arc and most machines in industry are DC. Surprisingly a lot of AC machines are on farms as they were cheaper to buy.
The main target of AC AND DC IS TO GIVE SUUPLY TO CONUMERS WERE AS AC CURRENT IS CHEAPER COMPARING WITH DC
Stick welding is also more difficult to learn and use, particularly the ability to strike and maintain an arc. Arc welders are available in AC, DC or AC/DC, with AC being the most economical. It's used for welding thicker metals of 1/16 inch or greater.
AC is easier and cheaper to send from the generators to the consumers than DC is.
To produce it and distribute it, ac is much easier.
A dc is an acronym for direct current & 2 be put in to use,changed to ac which could then be used in welding
ac transmission is better. because it is cheaper as converter are not use.but losses are more as comparison to dc.
I Think you,ll have to expand your question , what do you exactly mean by "cheaper"
Some electrodes (welding rods) can be used AC or DC. Some are strictly DC. You may find that most electrodes run smoother on DC. Most industries purchase machines with DC capability.
Northern Tool and Equipment, as well as Industrial Gas and Supply are two excellent sources for this type of product. Sears also sells welders. Online, they are available from Amazon.
For output, either one. Most machines produce Direct Current DC. It is much easier to use and most electrodes can be used with DC. Almost all use Alternating Current AC for a power source - input. Hope this helps.
DC generators require more time and material to make. Because of this, it will be cheaper to purchase an AC generator. DC generators are typically a better product as well, and you get what you pay for.