| 摘要 |
<p>A fail-safe, fault-tolerant switching system for a critical device includes a first pair of terminals for connection to a power source; a first network including a first fuse device, first switching device and third switching device connected in series between the first pair of terminals; a second network in parallel with the first network including a second fuse device, second switching device and fourth switching device connected in series between the first pair of terminals; and a second pair of terminals one between the first and third switching devices and one between the second and fourth switching devices for connection to the critical device for fail-safe current removal from the critical device when the first and second switching devices are open and the third and fourth switching devices are closed, the first, second, third and fourth switching devices are open, fault-tolerant operation occurs through the first fuse device, first switching device and fourth switching device, or the second fuse device and second switching device and third switching device.</p> |
