Patent ID: 6104199
Filing Date: 2000-08-15
Classification: G01R

Abstract:
A magnetic-head short-circuit detector comprising:first voltage and second voltage generating means for generating a first voltage corresponding to a voltage that appears at one end of a magnetic-head coil when a magnetic head is in a recording state and a second voltage having a predetermined potential difference relative to said first voltage;third voltage and fourth voltage generating means for generating a third voltage corresponding to a voltage that appears at another end of said magnetic-head coil when said magnetic head is in said recording state and a fourth voltage having a predetermined potential difference relative to said third voltage;first comparing means for comparing said first voltage with said fourth voltage; andsecond comparing means for comparing said second voltage with said third voltage;wherein a short circuit between both ends of said magnetic-head coil is detected based on a result of the comparison by said first comparing means and a result of the comparison of said second comparing means.