| 摘要 |
PURPOSE:To simplify a structure, and also to reduce a distortion of a reproducing waveform by providing an output terminal at a right angle with a bias current direction of a Hall effect element, applying a magnetic flux vertically to the element suface, connecting in common one end of a bias terminal, providing a connecting wire linked with a core, and using a gap in common at the time of recording and reproducing. CONSTITUTION:2, 1, ai and bi, ci and di, (d) and d', and 4 denote a ferrite substrate used as the first core, too, a Hall effect element film for each head of N pieces, N pairs of output terminals, N pieces of bias current terminals, its common terminals, and a connecting wire, respectively. The substrate 2 and the second cores 3 of N pieces form N pieces of head cores having a gap (g), a magnetic flux corresponding to a signal magnetic field is led into the core, and the magnetic flux passes through the Hall effect element film and is shunted. That is to say, a magnetic flux density is applied vertically to the Hall effect element film, and signal voltage corresponding to N pieces of tracks is generated in the terminals ai, bi. In case of recording, a high frequency voltage for bias is applied between the terminals (d), d', and a bias magnetic field is generated in the gap (g). The signal magnetic field applies a signal current to a winding 5 formed on N pieces of core parts. In this regard, a reproducing output is in proportion to a Hall coefficient, a bias current and a magnetic flux density, in inverse proportion to a film thickness, and does not contain the secondary higher harmonic distortion. |
