| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an operation detection circuit capable of not only detecting a motion of an operation part but also forcibly moving the operation part. <P>SOLUTION: An operation detection circuit is connected to an inductor L1 whose inductance varies according to a motion of an operation part, includes: a transistor Q1 arranged between a first voltage part 91 and a first end a which is one end of the inductor L1; a resistor R1 arranged between a second voltage part 92 and a second end b which is another end of the inductor L1; and a transistor Q2 connected in parallel with the resistor R1, outputs a detection signal according to the motion of the operation part from the end b by supplying detection current i1 to the inductor L1 and the resistor R1 when the transistor Q1 is on and the transistor Q2 is off, and supplies drive current i2 which moves the operation part to the inductor L1 when the transistor Q1 is on and the transistor Q2 is on. <P>COPYRIGHT: (C)2013,JPO&INPIT |
