IDLE RUNNING LIMITER FOR D.C. ARC WELDING MACHINES OF THE ASYNCHRONOUS MOTOR-D.C.GENERATOR TYPE

摘要

dipozitivul according to the invention, in order confectionarii to the alternating current electric arc welding converter in dc and its arrival in welding procedure,the star triangle switch uses a special electronic relay automatically and a detector whose input is connected the output level pa of a signal generator of small powerthe output is coupled to the terminals of the generator capacitativ use of conbvertizorului dc welding electric arcthe releuilui electronically with the signal amplitude change phenomenon of wobbles out small power signal generator circuit at the exitthereof follow a task capacitiva,electronic starting relay accomplishing automatic command normal star - triangle engine asynchronous converter for arc welding direct current or command through practical instantanee from operation in connection to the star triangle in cobexiunea asynchronous engine respectively.when the latter works in the connection of the connection by returning star triangle - in order to turn under reduced power absorbed,at the long empty uses two towers in its electronic timer whose level detectors are coupled on voltage dividing resistive what harvest continue to bornthey use generator circuit of dc converter weldingthe first of these relays electronic timing command of passage of accomplishing connection in star triangle connection asynchronous motor