Development of the Schematic Diagram of the Automatic Dotted Welding Apparatus

A schematic diagram of the automatic dot welding machine consisting of four blocks was offered: power; synchronization with network; managements; short circuit detecting. For development of the scheme of the device a free software of S-Plan is used. By means of Multisim software the operating modes of the transformer of the device power block has modelled. It is shown that in the operating microcontroller it is necessary to realize the program of synchronization with a phase of mains voltage that the transformer turned on only near transition of voltage of network through zero. At the exit of the block of synchronization we will receive a meandro-like signal, with short time of zero level.