| 摘要 |
PURPOSE:To automatically detect azimuth without adjusting offset voltage by rotating and controlling a Hall element by a servomechanism on the basis of output signals from the Hall element. CONSTITUTION:A Hall element 4 is driven by an electric power source 5 for driving and oscillated at a fixed frequency by an oscillating mechanism 6. A servomechanism 8 rotates and controls the Hall element 4 on the basis of an output signal from the Hall element 4. Namely since outputs from the Hall element 4 are changed in accordance with the change of the azimuths on a detecting surface for the rotation of the Hall element 4, the azimuths can be automatically detected by controlling the rotation of the Hall element 4 by the servomechansim 8 without adjusting offset voltage. |
