| 摘要 |
PROBLEM TO BE SOLVED: To provide a switching circuit capable of performing exact input switching by reducing a shock noise. SOLUTION: Concerning the switching circuit for selecting and outputting any one of the signals of plural systems while switching them through switching means (SW1-SWN), this circuit has a filter circuit (13) for lowering a cutoff frequency at the switching timing of the switching means (SW1-SWN) so that the shock noise generated in an output signal can be reduced and exact input switching can be performed.
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