| 摘要 |
The relay circuit is provided with a fuse(RF) in a relay driver circuit for disconnecting the fuse(RF) in case of overheat of the relay. The relay circuit includes a main power disconnector(A0) provided in a power supply(Vcc), a signal input(1) for inputting a LOW/HIGH signal via connections(P0-P4) connected to the power supply(Vcc), the relay(RY), a load and a check switch(SW2), a controller(2) connected to the signal input(1) and having a plurality of logic circuits connected to the respective connections(P0-P4), an output(3) connected to the controller(2) and having transistors(TR1-TR3), and an alarm(A1) for generating an alarm signal in case of abnormal operation of the relay(RY).
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