| 摘要 |
PROBLEM TO BE SOLVED: To provide a constant voltage transformer with high-efficiency and high speed response which adopts automatic control that compensates a magnetic flux of the transformer using a tripod core only for a fluctuating part by PWM control. SOLUTION: A magnetic flux controlled constant voltage transformer continuously controls and modifies high frequency voltage, which conducts PWM control only for compensated variable of excess or deficiency for a constant reference voltage, to be positive or negative and controls output voltage to be constant, and it can be highly efficient and miniaturized because influx of invalid current is low and the control is high frequency component. Besides, a safe magnetic flux controlled transformer, which leaks little current, resists extraneous noise, and resists thunder storm, can be realized because output winding is wound independently and separately from input winding. COPYRIGHT: (C)2004,JPO
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