| 摘要 |
PURPOSE:To prevent malfunction by driving the load only when the output voltage is positive only with the normal signal inputted to the signal selection circuit. CONSTITUTION:In the signal selection circuit IV, if the normal signal only is inputted, the positive voltage is outputted, and if the vicinity signal is inputted, then negative voltage, and if the normal signal and its vicinity signal are inputted at the same time, zero voltage is outputted. Further, only when the output voltage is positive, the load is driven with the load drive circuit V. Accordingly, the malfunction of driving the load can be prevented when the vicinity signal of the normal signal including the normal signal component is inputted at noise. |
