| 摘要 |
<P>PROBLEM TO BE SOLVED: To achieve optimal stop control used when the drive of a linear vibration motor is terminated. <P>SOLUTION: In a drive control circuit of a linear vibration motor, a differential amplification circuit includes an operational amplifier OP1 in which an P-channel type transistor is used as a transistor receiving an input voltage, and detects an induced voltage generated in a coil L1. Before an H-bridge circuit is controlled to a high impedance state, a drive signal generating unit turns on a first transistor M1 and a second transistor M2 to transmit a regeneration current between the coil L1, the first transistor M1, the second transistor M2, and a power supply potential. <P>COPYRIGHT: (C)2012,JPO&INPIT |
