| 摘要 |
PURPOSE:To reduce the loss of an LC resonance power source and a noise level by forming the current of a switch element in a sinusoidal shape by utilizing the resonance operation. CONSTITUTION:The opening and closing timings of the first and second switching transistor 3, 13 become in a reverse phase. The opening operation of the transistor 13 is performed by the induced voltage of the first secondary winding 7 generated by applying an input voltage to the primary winding 5 of a voltage conversion transformer 17 by the closing operation of the transistor 3, and the closing operation of the transistor 13 is performed by a flyback voltage generated in the secondary winding 6 of the transformer 17 by the opening operation of the transistor 3. The current of the transistor 13 becomes a sinusoidal wave shape by the resonance of a coil 18 and a capacitor 10. |
