| 摘要 |
The magnetometers possess a detector part with a magnetosensitive material sensitive to the magnetic field and coil surrounding its magnetosensitive material to pick-up the magnetic field, a pulse generator circuit supplies pulse current to the magnetic material, a sample holding circuit including with an electronic switch synchronized with pulse timing for switching on/off and holding capacitance to charge electricity produced by the pickup coil during the switch on period, and an amplifier circuit amplifies the holding capacitance voltage. Magnetometers possess a Buffer circuit connecting the output side of the pickup coil with the input side of the Buffer circuit and connects the output side of the Buffer circuit with the input side of the electronic switch to transfer the pulse signal voltage induced in the pickup coil from the input side to the output side keeping the pulse signal voltage of the outside at the same level as the inside. |
