INDICATING LAMP LIGHTING DEVICE FOR ELEVATOR

摘要

PURPOSE:To prevent maloperation due to no existence of power source voltage at a terminal by separating a lamp drive power source line from a power source line for terminal control through different cables. CONSTITUTION:A direct current lamp drive circuit 2 and a transmission control circuit 3 are electrically separated from each other with a photocoupler 5, to prevent inflow of rush current to the transmission control circuit 3 at lighting a direct current lamp. Further, a lamp drive power line 11 and a transmission control power line 8 are separated from each other. Hereby, the transmission control power line 8 is perfectly not effected against voltage drop of the power line 11 generated by rush current of about ten times of normal current. Consequently, power source can be stably supplied and maloperation due to shortage of power source voltage can be prevented.