Direction and speed control


Posted on Apr 21, 2012

This circuit operates like the one shown in Fig, 57-4, The only differences are that the field is placed across the rectified supply and the armature is placed in the SCR bridge. Thus the field current is unidirectionali)ut armature current is reversible; consequently the motor`s direction of rotation is reversible


Direction and speed control
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Potentiometer Rl controls the speed.




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