SPEED CONTROL OF MOTOR USING SCR To control the speed of the AC motor, hand driller, etc, using SCR. The gate is triggered by diac device to control the speed of motor. The SCR conducts in one direction when it is triggered by positive voltage applied between gate & cathode. The trainer is operated with 230VAC/50Hz mains. Input Supply : 230VAC/50Hz mains operated Dimension : 27cms x 17cms x 10cms Weight : 500gms Qty :