| 摘要 |
PURPOSE:To eliminate an unnecessary excess current by limiting the output of a hole signal processor when a feedback signal voltage exceeds the prescribed level, and limiting the output current of an output driver. CONSTITUTION:When the excess output current of an output driver 3 flows, a voltage drop at a feedback resistor 5 increases, and a feedback signal increases. When the fact that the level of the feedback signal voltage exceeds the prescribed level is judged in an output current limiter 6, the output of a hole signal processor 2 is limited. Thus, the output current of the output driver 3 is limited so as not to become an unnecessarily excess current. |
