7-2. Slope-control Circuit. At the top in Fig. 7E, the slope control receives 115-volt and 230-volt power from ... of tubes X and Y. With selector switch ISW turned on, t tubes X and Y receive a-c anode voltage from the phase- shifting circuit; they do not fire until relay XCR operates. ... cent of full current at 230 volts, nor less than 20 per cent at 460 volts. t If 1SW is in the off position, tubes X and Y cannot fire;anbsp;...
|Title||:||Electronic motor and welder controls|
|Author||:||George M. Chute|