Control characteristics and power losses of magnetic amplifier used as a pulse-width modulator are discussed for a typical forward converter driven high-frequency switching. The control region of the magnetic amplifier is analyzed by modeling the DC magnetizing characteristics of the core and the reverse recovery of the diode in the converter circuit, and the dynamic characteristics of the regulated converter are examined analytically. The iron loss and switching loss of the magnetic amplifier are derived as functions of the switching frequency and the load current, with five states of the magnetic amplifier taken into consideration.>
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Harada et al. (1988) studied this question.
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