| 摘要 |
<p>In a power source circuit of this invention, an AC voltage of a commercial AC power source (30) is full-wave-rectified by a diode bridge (38) and divided into two 1/2 voltages by two capacitors (48, 50) connected to the output terminals of the diode bridge (38). A half-bridge invertor operation is performed by a smoothing capacitor and first and second reverse-conductive switches (74, 76) connected in parallel with the output terminals of the diode bridge (38) via inductors (52, 60), respectively. A power from the capacitors (48, 50) is temporarily stored in the inductors (52, 60), and the first and second reverse-conductive switches (74, 76) are operated, thereby performing two boosting chopper operations. <IMAGE></p> |
