| 摘要 |
<p>According to one embodiment, a semiconductor switch (7, 7a, 7b, 7c, 7d, 7e, 7f) includes a main element (3) including a switching element (1) and as antiparallel diode (2), and a reverse voltage application circuit (6). The reverse voltage application circuit includes an auxiliary electric-power supply (12), a high-speed free wheeling diodes (4), an auxiliary element (5), and a capacitor (13). The high-speed free wheeling diode comprises a plurality of diodes (15) connected in series.</p> |
