| 摘要 |
PURPOSE:To prevent the effects of electric noises of a drive circuit and to improve the reliability of a floppy disk driver, by branching the power supply lines and earth lines for the drive circuit and a record/reproduction circuit at a position immediately before a connector and using a noise absorbing element. CONSTITUTION:The patterns which supply the power to each circuit from a connector 1 set on a control substrate are branched at a place immediately before a connector. A power supply line 8 and an earth line 9 for a magnetic recording medium drive circuit 3 and a head drive circuit 4 are set on a parts surface 6. While a power supply line 10 and an earth line 11 for a record/reproduction circuit 5 are set on a solder surface 7 together with a noise absorbing element 2. The noises produced at a drive circuit are put on the lines and carried to the branch points. The lines 10 and 11 receive no effect of those noises since the effect of the element 2 is different from the surfaces 6 and 7. This reduces the R/W errors of the circuit 5 and improves the reliability of a floppy disk driver. |
