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Sensor controlled hi voltage output circuit delayed by timer.

The circuit has been bread boarded, but there are a few things that I am not sure how to simulate. For instance, I have a sensor circuit that provides 5VDC that is then inverted. This is depicted by logic 0 and the momentary switch SW2.

Another thing that is not shown in the diagram are the loads. I am using two LEDs D2 and D3. D2 is my HV circuit and D3 is the reset circuit.

Like I said, the circuit is bread board and it does work, my only issue is the trigger input When triggered, the sensor circuit stays at a high for 20 seconds. I only need a 1 second or less pulse. :-(