An analysis is presented of inductively-loaded single-phase and three-phase thyristor bridge rectifier circuits, in which the source impedance cannot be neglected. It is shown that, as the ratio of the source reactance to the load resistance is raised, modes of operation with differing characteristics occur. Although the effect of an increased delay in the thyristor firing signals is normally to reduce the output voltage, it is shown that under certain conditions no change whatsoever is produced in the circuit wave-forms.
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