Automatic arc welding apparatus

AMONG the requirements which must be met by arc welding equipments are simplicity and reliability. Their importance is increased by the fact that in a great many cases these equipments are installed and operated in locations where no trained electrical help is available. A new type of arc welding generator is described which inherently possesses the electrical characteristics desirable for single operator arc welding generators. This results in the elimination of external resistors or other regulating devices since the generator delivers at its terminals the voltage required by the arc and the current for which the equipment is adjusted.