| 摘要 |
<p>PURPOSE:To suppress the fluctuation in a power supply voltage fed to a control unit even when load fluctuation takes place in the case of application of a power supply voltage to plural node sections each comprising a control unit for information communication through a multiplex transmission communication line and a load drive section controlled by the unit. CONSTITUTION:A load drive section 16 of each of plural node sections 12A, 12B, 12C connecting to a 2-way communication line 11 for information multiplex transmission is provided with a load power supply line 23 through which a DC voltage from a DC voltage application section 20 is applied as a power supply voltage and a control power supply line 29 through which a stabilized DC voltage from a stabilized voltage generating section 26 based on a DC voltage from the DC voltage application section 20 is applied to a control unit 15 of each of the plural node sections 12A, 12B, 12C as a power supply voltage.</p> |
