Popular point, the difference between the two:
In the case of a falling edge trigger, the trigger is generated when transitioning from high to low; the low level is only generated once. Therefore, the edge trigger is suitable for external interrupt requests that are input in the form of negative pulses.
If it is a low level trigger, then the interrupt is always active during the low time; therefore, if the interrupt program is executed and exits before the level is not restored, then the interrupt will be entered again after exiting; but as long as the interrupt does not exit It is not triggered repeatedly. Therefore, the level trigger mode is suitable for external interrupts with low level input and the interrupt service can clear the external interrupt source (in practice, this is usually done by turning off the interrupt before the interrupt exits, and then turning it back on at the appropriate time).
KNB6-63 Miniature Circuit Breaker
KNB6-63 Mini Circuit breakers, also named as the air switch which have a short for arc extinguishing device. It is a switch role, and also is a automatic protection of low-voltage electrical distribution. Its role is equivalent to the combination of switch. Fuse. Thermal Relay and other electrical components. It mainly used for short circuit and overload protection. Generally, According to the poles, mini Circuit breaker can be divided into 1P , 1P+N , 2P, 3P and 4P.
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