I imagine from your request about driving the LED emitter side of an optocoupler with so much current that you are trying to span a significant distance between the emitter and the detector. If I am correct in this interpretation then you may want to consider solving your intensity problem by using a cluster of LEDs driven by the same control signal. This would allow you to drive each LED at a more conventional drive current level. I still think you would benefit from pulsing the drive to the LEDs as recommended by bertus since that would allow you to detect your signal in the presence of a significant level of ambient light. Of course that will add some complexity to your receiver since it will need to be designed to detect a time-varying signal from the LED light source.I need an optocoupler which could tolerate a current at least 1A. how should I find it?
thanks for your help
not too complex. a 555 setup as a missing pulse detector on receiver side can easily integrate.I imagine from your request about driving the LED emitter side of an optocoupler with so much current that you are trying to span a significant distance between the emitter and the detector. If I am correct in this interpretation then you may want to consider solving your intensity problem by using a cluster of LEDs driven by the same control signal. This would allow you to drive each LED at a more conventional drive current level. I still think you would benefit from pulsing the drive to the LEDs as recommended by bertus since that would allow you to detect your signal in the presence of a significant level of ambient light. Of course that will add some complexity to your receiver since it will need to be designed to detect a time-varying signal from the LED light source.
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