Hey,
I am working on a project that will light up an LED when light hits a photodetector, and needs to be run off a battery, preferably a watch battery. I know I need to bias the detector but do I need a load resistor? The real part I am stuck on is how to switch on the LED. The voltage and current off the detector is way low so using an AND wouldn't work. Is there anything else out there I can use or do I need an amplifier?
Thanks for your help
I am working on a project that will light up an LED when light hits a photodetector, and needs to be run off a battery, preferably a watch battery. I know I need to bias the detector but do I need a load resistor? The real part I am stuck on is how to switch on the LED. The voltage and current off the detector is way low so using an AND wouldn't work. Is there anything else out there I can use or do I need an amplifier?
Thanks for your help