| 摘要 |
PROBLEM TO BE SOLVED: To provide a new, low ripple DC-to-DC converter which contains very little ripples in its output voltage, hardly requires a smoothing circuit, and can realize small size, light weight, and high efficiency. SOLUTION: This converter has at least two output transformers and a pair of switching elements. A neutral point of each transformer is connected to one pole of an input dc power supply device. One terminal of each switching element is connected to the terminals of a primary winding of the transformer, and the other terminal is connected to the other pole of the input dc power supply device. The converter also has means of controlling the pair of switching elements, so that when one of the elements is in continuity state, the other is not, and a means of rectification connected to secondary windings of the output transformers. Continuity timing of each switching element is set, so that values of output voltage of the rectification means become equal and the ripples appearing in rectified output waveform of one of the rectification means are offset by the other rectified output waveform.
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