The last two decades have seen substantial improvements in ultrasonic plastic-welding machines. Bench-top models feature proportional-valve controls, linear encoders, line-voltage regulation, internal ...

Small projects and repairs are no match for this portable welder.

“The large viewing area and true color lens make a real difference.” Welding helmets have come a long way from the bulky, dark hoods many DIYers and home mechanics grew up using. Modern auto-darkening ...

Abstract: This paper presents an automatic welding machine used for the carbon dioxide gas welding, with the mechanical structure designed, and the working process of the automatic welding machine ...

Abstract: This paper is concerned with some experimental results and practical evaluations of a three-level phase shifted ZVS-PWM DC-DC converter with neutral point clamping diodes and flying ...