| 摘要 |
Apparatus and method for protecting equipment against electrical power surges which is not 'ground-centered'. A protection circuit in accordance with this invention comprises at least (a) two input terminals, (b) two fuses in series respectively, (c) a triac which is over-current activated and connected at outputs of the fuses, (d) an over-current sensor in series between one of the fuses and an output terminal, to activate the triac, and (e) a static potential limiter which is overvoltage activated and connected between the triac and a ground terminal. Each fuse is appropriately rated to blow before the activated triac or the activated static potential limiter of the protection circuit are destroyed.
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