Can someone help me remove the delay on the circuit above? It is a infrared beam cut detector, much like a burglar alarm. It works fine except for one thing, delay on the relay.
I'm trying to use this on a race beam-cut system and delay is causing problems. The Red LED reacts in realtime with the beam cut but the relay doesn't. I've tried removing caps but still the problem persist.
The circuit works this way:
1. If the beam is present, the relay is powered, meaning it is always on the Normally Closed position. If the beam is cut, power is taken off the relay. This part has no delay, relay click is instant.
2. Delay comes when the beam is back again, it takes roughly around 1 second before you hear the relay click again.
Since on a race, the starting line beam is reverse of everything. The beam is cut normally, and the beam comes back as you move out of the starting line (reaction time). This is the reason why I need to remove the delay. On the other beams like, midway, or finish line, the delay is not a problem since beam-cut is in realtime.