Systems and methods to control pulse welding are disclosed. An example welding-type system includes: power conversion circuitry configured to convert input power to welding-type power; and control circuitry configured to control the power conversion circuitry to output the welding-type power in a plurality of pulse cycles, each pulse cycle including background, ramp up, peak, and ramp down phases. Controlling the power conversion circuitry involves: during the background phase, controlling the power conversion circuitry in a voltage-controlled mode using a background voltage as a target voltage; during the ramp up phase, controlling the power conversion circuitry by changing the target voltage to a peak voltage; during the peak phase, controlling the power conversion circuitry using the peak voltage as the target voltage; and during the ramp down phase, controlling the power conversion circuitry by changing the target voltage to the background voltage.

A welding or additive manufacturing system includes a power supply having a controller which controls operation of the power supply. The power supply provides a current waveform to a contact tip assembly having a first bore terminating at a first exit orifice and a second bore terminating at a second exit orifice. The first exit orifice is configured to deliver a first wire electrode and said second exit orifice is configured to deliver a second wire electrode. The exit orifices are separated from each other by a distance configured to facilitate formation of a bridge droplet between the wire electrodes while preventing solid portions of the first wire electrode delivered through the first bore from contacting solid portions of the second wire electrode delivered through the second bore, during a deposition operation in which the current waveform is conducted to both of the wire electrodes simultaneously through the contact tip assembly.

An example engine driven welder/generator system is disclosed that includes a turbo charged gasoline powered engine connected to an electric welder/generator. The welder/generator is configured to provide an output to an auxiliary welding system. The turbo charger system enhances operation of the gasoline engine by powering a turbine with engine exhaust to drive a compressor to increase intake of air, resulting in compressed air providing more powerful explosions in an engine combustion chamber once fuel is added and ignited. The resulting engine drives the welder/generator to provide a more consistent torque curve, while generating less noise per unit of power output in comparison to a diesel engine.

A real-time virtual reality welding system including a programmable processor-based subsystem, a spatial tracker operatively connected to the programmable processor-based subsystem, at least one mock welding tool capable of being spatially tracked by the spatial tracker, and at least one display device operatively connected to the programmable processor-based subsystem. The system is capable of simulating, in virtual reality space, a weld puddle having real-time molten metal fluidity and heat dissipation characteristics. The system is further capable of importing data into the virtual reality welding system and analyzing the data to characterize a student welder's progress and to provide training.

A supplementary circuit for process supply lines of a welding torch or cutting torch has at least one connection device to a welding current source arranged on it, wherein electrical energy and other media are conveyed to the welding torch or cutting torch via the connection device and via a process supply line that is preferably held in a hose pack of the welding torch or cutting torch. Electrical energy for operating a peripheral device, such as a sensor, a drive unit or a controller for the drive unit, is branched or tapped off from at least one electrical process supply line without significantly affecting the electric arc process. The supplementary circuit provided for branching or tapping off the electrical energy is coupled in parallel onto the welding current circuit. This coupling is based on direct ohmic contact or on a galvanic coupling.

A supplementary circuit for process supply lines of a welding torch or cutting torch has at least one connection device to a welding current source arranged on it, wherein electrical energy and other media are conveyed to the welding torch or cutting torch via the connection device and via a process supply line that is preferably held in a hose pack of the welding torch or cutting torch. Electrical energy for operating a peripheral device, such as a sensor, a drive unit or a controller for the drive unit, is branched or tapped off from at least one electrical process supply line without significantly affecting the electric arc process. The supplementary circuit provided for branching or tapping off the electrical energy is coupled in parallel onto the welding current circuit. This coupling is based on direct ohmic contact or on a galvanic coupling.

A welding system is provided that includes an engine, a compressor coupled to the engine, and a regulator coupled to the compressor and located on a control panel. Another welding system is provided that includes an engine, a compressor coupled to the engine and a monitor circuit configured to monitor the duration of operation of the compressor by monitoring engagement of the clutch. A pressure gauge configured to be coupled to a compressor is also provided.

Methods and apparatus to synergically control a welding-type output during a welding-type operation are disclosed. An example welding-type power supply includes a power conversion circuit configured to convert input power to welding-type power and to output the welding-type power to a welding-type torch; a communication circuit configured to receive a control signal from a remote control device during a welding-type operation; and a control circuit configured to synergically control a voltage of the welding-type power and a wire feed speed based on the control signal.

A welding-type power supply that receives alternating current (AC) input power and converts the AC input power to direct current (DC) power to provide power for welding tools. The welding-type power supply is configured to detect whether single phase AC power or three-phase AC power is connected to the input of welding-type power supply. Single phase input power may be detected by sampling ripple voltage of the DC power, either synchronously with the AC input power or synchronously with a signal generated by an output of the welding-type power supply.

A portable advanced process module system includes, for example, a welding power source, an portable advanced process module, and a wire feeder. The portable advanced process module and the wire feeder are separately enclosed in suitcase style enclosures with disconnectable power and communication means between the portable advanced process module and the wire feeder. The processing unit includes power electronics to enable advanced weld processes that can be delivered to the wire feeder and a welding work piece. The portable advanced process module is powered by a DC bus that can be supplied by a welding power source. Connecting the portable advanced process module between the welding power source and the wire feeder enables advanced welding processes to be accomplished at great distances from the main welding power source. Separating the power electronics into the portable advanced process module and maintaining a standard suitcase wire feeder form factor keeps the welding equipment used in the working area envelope small, light, and portable.