| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a direct-current power supply system having an extremely low ripple output wherein a low-frequency ripple component included in an input hardly appears in an output, concerning the direct-current power supply system for a radar device wherein the low-frequency ripple component causes malfunction. <P>SOLUTION: A boost type chopper circuit having a switching element, a coil and a capacitor is connected between a full-wave rectifying circuit and a DC/DC converter, and the maximum current is calculated from an output current of the boost type chopper circuit, and the pulse width of the switching element is adjusted so that a current flowing in the coil becomes below the maximum current. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
