| 摘要 |
PROBLEM TO BE SOLVED: To provide a technique for reducing size of current sensors as compared with conventional ones.SOLUTION: A current sensor 1 is configured to be able to determine a signal level of a detected signal based on impedance of an excitation coil 20 that changes in accordance with the signal level of the detected signal, which makes it unnecessary to provide a separate detection coil to determine the signal level of the detected signal. Thus, the size of a current sensor is reduced as compared with conventional current sensors which require detection coils. |
