| 摘要 |
<p>The method involves applying a periodic signal produced by a digital state machine (40) to an inductive element (42), constituting a non resonant LC filter with equivalent capacitors (C1, C3), for obtaining a non-sinusoidal periodic voltage signal, where element has less value of inductance of about 2.2 micro Henry. Each period of the periodic digital signal is constituted of sub-signals of same number of bits, which take a selected state among two values, where a sampling frequency of the sub-signals is 2 MHZ. Independent claims are also included for the following: (1) a piezoelectric motor (2) a photographic lens comprising a unit to be cooperated with a piezoelectric motor (3) a camera comprising a lens (4) a telephone set comprising a camera.</p> |
