MAW Productivity Development and Reduction of its Harmful Effect on Human Organisms

The article presents results of researches on manual arc welding efficiency development. It is proved that the arc welding inverter power source, compared with the diode rectifier, increases coefficient of transition of alloying elements into the weld joint; it also reduces the rate of alloying elements transition into slag and gaseous components and in addition reduces the harmful effects of welding on human organisms.

Alternative Technique of Inverter Power Source Synchronization

In devices synchronized with electric mains and sensitive to interference (particularly to an inverter power source) it is expedient to also synchronize the power source. The paper describes a method of synchronizing the inverter power supply with the mains. The general aspects of the method are discussed in detail, and possible hardware implementations are considered. External factors and internal parameters affecting the quality of synchronization are analyzed. The results of practical implementation of this method for synchronization of klystron filament power supply are presented