| 摘要 |
PURPOSE: To prevent an erroneous remote control signal from being generated under any using environment. CONSTITUTION: A light receiving means 1 is serially connected with a capacitive element 2 cutting the DC signal component of a received light output. An arithmetic amplifier circuit to be arranged at the next stage is prevented from saturating in DC, only the AC signal (remote control signal) component of the received light output is outputted and only the AC signal component is amplified. |
