| 摘要 |
PURPOSE: A current inversion type rectifier is provided to obtain a current-inverted control voltage output having any duty rates by providing thyristors that respectively control phases for a positive half period and a negative half period of an output from a secondary winding of a main transformer. CONSTITUTION: A power input unit is provided to receive a three-phase current voltage. A primary winding of a main transformer(20) is connected to an output of the power input unit. A first thyristor unit(30) comprising a plurality of thyristors that are connected to a secondary winding of the main transformer so that the thyristors conduct in one direction in response to a forward output from the secondary winding. A second thyristor unit(40) comprising a plurality of thyristors that are connected reversely to the first thyristor unit between control voltage output terminals(P,N). Trigger units(50,60) issue sequential trigger signals to the gate electrodes of the first and second thyristor units. A control unit(100) is provided to control the trigger units.
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