| 摘要 |
<p>A magnetic head drive circuit (15) comprises a control circuit (20) for receiving a recording signal for recording a signal on a recording medium by use of magnetism and generating a control signal according to the recording signal and a switch circuit (30) including switching FETs (31 to 34) for changing the direction of current made to flow through a field coil (16) of a magnetic head (14) according to the control signal. The switching FETs are Pch FETs (31, 32) and Nch FETs (33, 34). The maximum of the gate voltage of the switching FETs is lower than the voltage (Vd) of a coil power supply for supplying the current flowing through the field coil (16) and higher than the gate threshold voltage of the switching FETs.</p> |
