H - Electricity
02
M
321/50
H02M 7/44 (2006.01) H02M 1/14 (2006.01) H02M 3/135 (2006.01) H02M 7/515 (2006.01)
Patent
CA 1044318
ABSTRACT OF THE DISCLOSURE: A convertor for supplying a load with direct voltage pulses of variable frequency includes input terminals for connect- ion to a DC source and a main circuit, with a filter circuit con- nected between the input terminals and the main circuit. The fil- ter circuit includes a capacitive parallel branch and a series in- ductor connected between one of the input terminals and the capa- citive parallel branch. A resistor for reducing the Q-value of the filter circuit is connected in parallel with the series induc- tor. A second series inductor may be connected in series with the parallel connection of the first series inductor and the resistor. The first series inductor has an inductance which, at low current values, is larger than that of the second inductor.
239581
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