| 摘要 |
PROBLEM TO BE SOLVED: To provide a magnetism detector capable of expanding a length range of a variation period where a variation of magnetism can be detected, and to provide a game machine.SOLUTION: The magnetism detector includes: an inductor 20; a signal generation part for generating an amplification signal that is an amplified signal of the electromotive force of the inductor 20; and a signal processing part for outputting a detection signal showing that the inductor 20 has detected a variation of magnetism. The signal processing part outputs a detection signal when a voltage value of an amplification signal is higher than a first comparison value, and outputs a detection signal when a voltage value of an amplification signal is lower than a second comparison value that is equal to or lower than the first comparison value.SELECTED DRAWING: Figure 5 |
