| 摘要 |
A digital automated coercimeter includes a Helmholtz coil, generator of linear current, control unit, threshold block. AND gate, pulse counter, digital indicator, flip-flop circuit, timing-pulse generator, pulse divider, peak detector, differentiating block, sensor of tangent component of field strength, sensor of normal component of field strength, two square-wave generators, first adder and square-root extractor. It includes generator of writing pulse connected with the first contact group of time relay to the Helmholtz coil, generator of alternating decaying current connected with the second contact group of time relay to Helmholtz coil, this is connected to generator of linear current with the third contact group of time relay connected to control unit, and to the inputs of the second adder series-connected differentiating amplifier, null device and indicator of accurate installation of the article are connected. |
