| 摘要 |
<p>Apparatus (20, fig. 1) for wirelessly charging a rechargeable storage medium (32) of an electrically powered device (30), the apparatus (20) comprising: a charging inductance 24 for wirelessly supplying energy to the device (30) containing the storage medium to be charged; a tuning circuit for setting a resonant frequency of the charging inductance; and a driver circuit 40 for driving the charging inductance, wherein the driver circuit (40) comprises a neutral point clamp (NPC) circuit. The apparatus may also comprise a modulator which generates amplitude modulated signals. The modulator could also impart a binary phase shift keying (BPSK) modulation to the signal that drives the charging inductance.</p> |
