| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a signal processing circuit of an analyzer capable of improving reliability and performing cost decrease by eliminating a synchronous signal detection sensor for signal processing on the light intermittent type analyzer represented by an infrared analyzer. SOLUTION: This signal processing circuit 1 of the analyzer to find a measuring value O by using a measuring signal S intermittent with frequency specified by the number of revolution of a chopper 5 to be driven by a motor with a reference signal R intermittent with the same frequency and the same phase as this measuring signal S is provided with a reference signal generating circuit 9 to generate the reference signal R by providing rotational information r1 of the motor 6 in accordance with variation voltage supplied to the motor from an electric power source part of the motor 6 and using this rotational information r1 .</p> |
