| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a drive circuit for PLZT, applying alternating current field to a number of PLZTs without any expensive part with one power supply. <P>SOLUTION: This drive circuit for the PLZT includes one or two or more PLZTs 11<SB>1</SB>-11<SB>n</SB>, a first change-over switch 31 taking a terminal 22 to which one electrode of each PLZT is connected in parallel as a common contact, a second switch 32 and a third switch 33, which are provided on the other electrode of each PLZT, a line 27 to which a contact of the second switch is connected in parallel, and a direct current power supply 30 provided in a space up to a line 28 to which a contact of the third switch is connected in parallel; wherein the first change-over switch has two change-over contacts 23, 24 in addition to the common contact, while one contact is connected to one electrode of the d.c. power supply, and the other contact is connected to the other electrode of the d.c. power supply. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
