| 摘要 |
<p>PROBLEM TO BE SOLVED: To improve an S/N ratio of an output signal of an amplifier while avoiding an extension of time required for the output signal of the amplifier to stabilize, when amplifying an output signal of a sensor in the amplifier for later use.SOLUTION: The amplifier with a switchable bandwidth is used to amplify an output signal of a sensor. For example, the amplifier is operated in a wide band for a constant time T after the start of signal input from the sensor to the amplifier following power input, and after that the amplifier is operated in a narrow band.</p> |
