| 摘要 |
<p>PURPOSE:To obtain a highly accurate converter. CONSTITUTION:A bias magnetic field DC current IB is adapted to flow in a winding line 3 by an electric current flow-in means which comprises a power source 5 and a resistor 6 so that the magnetic permeability of a magnetic path 2 may be the maximum magnetic permeability mum. During that time, an electric current IC flows in a detection resistor 4. Bias voltage is produced between the both ends of the detection resistor 4. Under this condition, when a detected current I1 flows in a detected body 1, a detected current I1 is detected in the winding line 3 due to electromagnetic induction and a detection current I2 flows. The current I2 has a high coupling factor and a wide constant hange to provide a highly accurate current I2. When the current I2 flow to the winding 3, it flows to the resistor 4 to produce a detection voltage Eb across the resistor 4. The voltage Eb is input to the output circuit 7 for processing and an output voltage E is output after a bias voltage has been removed.</p> |
