| 摘要 |
PROBLEM TO BE SOLVED: To conduct control drive without receiving influence of drop of voltage of the power supply section due to pulse discharge of linear motor drive. SOLUTION: This circuit is composed of a drive circuit 6 for operating a linear motor by supplying a driven pulse current to a linear motor, a control circuit 5 for controlling the drive circuit 6, a power supply section for supplying the power source to the driven circuit 5 and control circuit 6, a switching means 3 arranged between the power supply section and control circuit 5 to turn on and off the connection between the control circuit and power supply section in synchronization with the drive pulse current and a capacitor C which is charged when the switching means 3 is ON or is discharged when it is OFF to supply the power source to the control circuit 2. When the voltage of the power supply is lowered due to the pulse discharge, the control circuit 5 is isolated from the power supply section and is simultaneously fed from the capacitor C. |
