| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a magnetic balance type current sensor capable of functioning with a single power source and simplifying the circuit constitution. SOLUTION: A resistor element 10 generating a voltage drop proportional to the current flowing to a cancel coil 5 is connected to be capable of giving and receiving a current, to the output terminal of an intermediate electric potential generator 13 outputting intermediate electric potential of the power source voltage of a single power source 12. By this, the voltage drop of the resistor element 10, that is, a signal voltage can change to positive and negative sides from the constant intermediate potential output by the intermediate potential generator 13 and so the magnetic balance type current sensor can be functioned by the single power source 12.</p> |
