| 摘要 |
A shutdown and/or alarm system is actuated by a monitor. The system includes an AND circuit and two multivibrators. The multivibrators have different reset times. A signal from the monitor triggers the first multivibrator, which triggers the second multivibrator when it resets. The AND circuit is actuated to energize a shutdown device and/or an alarm when both multivibrators are triggered.
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