17 pages matching control current in this book
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180 degrees 2a in Figure alternating current average output voltage change of flux change of load choke coil control circuit control current control winding core saturates current gain curve 2a curve 9b curves in Figure d-c flux equal to 2Bg Equation 18 Equation 20 feedback windings fier Figure 15 Figure 9 Figure lb flux density B0 flux in maxwells impressed voltage appears increase initial flux density input voltage cycle knees leakage flux linear range load circuit load current load resistance load windings magnetization curve magnetomotive force maximum output maximum value maxwells set milliamperes negative feedback number of feedback number of turns output quantity point of operation positive feedback power gain produced range of control reactance rectifiers in series reduced to zero result reverse current saturable reactor self-saturating magnetic amplifier shown in Figure slope transfer characteristic curve turns Nc unit change vacuum tube value of load value of N0 voltage gain