| 摘要 |
Each power diode in an ORed direct-current power distribution system has connected thereacross, between the respective load and source terminals of the power diode, a series connection of respective first and second light-emitting diodes (LEDs) with the LEDs being similarly poled with respect to their common connection, with the power diode and the first LED being oppositely poled with respect to the power diode load terminal, with a resistance connected between the common LED connection and the power supply return. A resistance-LED arrangement is also provided in parallel with each nonindicating fuse. The ON (fully conducting-showing detectable visible light) and OFF (not fully conducting-not showing detectable visible light) patterns of the LEDs, both under the condition of normal voltage on each power bus and under the condition where the relative voltage between buses is varied slightly, can be used for circuit failure diagnostics. |
