264 CONTROL OF MACHINES

264 CONTROL OF MACHINES

264 CONTROL OF MACHINES

264 control of machines

264 control of machines

264 CONTROL OF MACHINES gets applied to the primary of a pulse transformer connected to the base of UJT . This pulse is transferred to the secondary side of the transformer and gets applied between gate and cathode of SCR . The SCR will trigger on and will start conducting if its anode is positive with respect to cathode . To achieve current flow through load on both half cycles of ac voltage , a bridge rectifier is used to provide a continuous dc supply to the SCR

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