| 摘要 |
PURPOSE:To prevent erroneous function of load device due to lag of output voltage falling time upon turn OFF of power under light load state. CONSTITUTION:A Zener diode D1 detects voltage and a transistor Q turns a relay RL ON/OFF. An erroneous function preventive circuit 4 for opening/ shorting the output depending on make/break of relay contact r1 is inserted between a power supply unit 3 and a load device control section 7 in order to control a sequence between the output voltages. |
