| 摘要 |
PURPOSE:To select plural recording grooves through the switching of a switch by driving a motor and an actuator at the same time or selecting two kinds of connection for driving only the motor by the switching operation of the 1st switch. CONSTITUTION:The driving circuit for the motor M1 and the driving circuit for the actuator M2 are coupled together through the 1st switch 33. The switch 33 has contacts B, C, and D and is switched by three states. When its movable contact 33a is at the neutral point, no current flows through the motor driving circuit and neither the motor M1 for driving a record disk nor the motor as the actuator M2 is driven. When the contact 33a contacts with the contact B, a current flows through the motor M1 to put the record disk driving motor M1 in operation, and when the contact is placed on the side of the contact C or D, currents flow through the driving circuit for the motor M1 and the driving circuit for the actuator M2, operating the record driving motor M1 and the motor as the actuator M2. |
