This invention takes advantage of the characteristics that the effective charge numbers of different metals have different values and even with different signs, and alloys are prepared with the metals of different signs of effective charge numbers. This ceramic green sheet has a small thickness of, for example, about 0. The defects may be analyzed to determine a particular problem area causing the defects. The magnetic element and the magnetic sensor are arranged relative to each other such that when the moveable part is displaced the change of the magnetic field at the magnetic sensor is detectable by use of the magnetic sensor. The device can be a battery-powered consumer electronic device or a battery charging and conditioning system that is independent of an electronic device that uses the conditioned battery.