| 摘要 |
PROBLEM TO BE SOLVED: To simplify constitution of a electric circuit by reducing or eliminating an overcurrent protective device, for in a conventional system there was necessity to attach the overcurrent protective device inside or outside a device so as to prevent ignition in the case that there is fear of ending in ignition, etc., by any fault in one device constituting the electric circuit connected to a power source. SOLUTION: This system is constituted such that each device suppresses an overcurrent accompanying each other's fault by connecting a plurality of devices in series. Each device possesses voltage resistance capacity which can withstand increase of the voltage caused thereby even if any of the devices constituting this system in series connection falls in low impedance state accompanying the fault, and the impedance of each device is adjusted so that the power voltage may be distributed properly to each device at normal operation. COPYRIGHT: (C)2003,JPO
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