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2017-09-05 02:13  
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LED1 and LED2 indicators turn on and remain on, each time the circuit is triggered. During the timing cycle, U1 `s Q output at pin 10 becomes positive when the Q output at pin 11 becomes negative.

The two LEDs can be removed and the Q and Q outputs at pins 10 and 11, respectively, can be used LED2 to trigger some other circuit.

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